# Create a subscription

Creates a new subscription on an existing customer. Each customer can have up to 500 active or scheduled subscriptions.

When you create a subscription with `collection_method=charge_automatically`, the first invoice is finalized as part of the request.
The `payment_behavior` parameter determines the exact behavior of the initial payment.

To start subscriptions where the first invoice always begins in a `draft` status, use [subscription schedules](https://docs.stripe.com/docs/billing/subscriptions/subscription-schedules.md#managing) instead.
Schedules provide the flexibility to model more complex billing configurations that change over time.

The newly created `Subscription` object, if the call succeeded. If the attempted charge fails, the subscription is created in an `incomplete` status.

- `customer` (string, optional)
  The identifier of the customer to subscribe.

- `add_invoice_items` (array of objects, optional)
  A list of prices and quantities that will generate invoice items appended to the next invoice for this subscription. You may pass up to 20 items.

  - `add_invoice_items.discounts` (array of objects, optional)
    The coupons to redeem into discounts for the item.

    - `add_invoice_items.discounts.coupon` (string, optional)
      ID of the coupon to create a new discount for.

    - `add_invoice_items.discounts.discount` (string, optional)
      ID of an existing discount on the object (or one of its ancestors) to reuse.

    - `add_invoice_items.discounts.promotion_code` (string, optional)
      ID of the promotion code to create a new discount for.

  - `add_invoice_items.price` (string, optional)
    The ID of the price object. One of `price` or `price_data` is required.

  - `add_invoice_items.price_data` (object, optional)
    Data used to generate a new [Price](https://docs.stripe.com/docs/api/prices.md) object inline. One of `price` or `price_data` is required.

    - `add_invoice_items.price_data.currency` (enum, required)
      Three-letter [ISO currency code](https://www.iso.org/iso-4217-currency-codes.html), in lowercase. Must be a [supported currency](https://stripe.com/docs/currencies).

    - `add_invoice_items.price_data.product` (string, required)
      The ID of the [Product](https://docs.stripe.com/api/products) that this [Price](https://docs.stripe.com/api/prices) will belong to.

    - `add_invoice_items.price_data.tax_behavior` (enum, optional)
      Only required if a [default tax behavior](https://docs.stripe.com/docs/tax/products-prices-tax-categories-tax-behavior.md#setting-a-default-tax-behavior-\(recommended\)) was not provided in the Stripe Tax settings. Specifies whether the price is considered inclusive of taxes or exclusive of taxes. One of `inclusive`, `exclusive`, or `unspecified`. Once specified as either `inclusive` or `exclusive`, it cannot be changed.

    - `add_invoice_items.price_data.unit_amount` (integer, optional)
      A positive integer in  (or 0 for a free price) representing how much to charge or a negative integer representing the amount to credit to the customer.

    - `add_invoice_items.price_data.unit_amount_decimal` (string, optional)
      Same as `unit_amount`, but accepts a decimal value in  with at most 12 decimal places. Only one of `unit_amount` and `unit_amount_decimal` can be set.

  - `add_invoice_items.quantity` (integer, optional)
    Quantity for this item. Defaults to 1.

  - `add_invoice_items.tax_rates` (array of strings, optional)
    The tax rates which apply to the item. When set, the `default_tax_rates` do not apply to this item.

- `application_fee_percent` (float, optional)
  A non-negative decimal between 0 and 100, with at most two decimal places. This represents the percentage of the subscription invoice total that will be transferred to the application owner’s Stripe account. The request must be made by a platform account on a connected account in order to set an application fee percentage. For more information, see the application fees [documentation](https://stripe.com/docs/connect/subscriptions#collecting-fees-on-subscriptions).

- `automatic_tax` (object, optional)
  Automatic tax settings for this subscription. We recommend you only include this parameter when the existing value is being changed.

  - `automatic_tax.enabled` (boolean, required)
    Enabled automatic tax calculation which will automatically compute tax rates on all invoices generated by the subscription.

  - `automatic_tax.liability` (object, optional)
    The account that’s liable for tax. If set, the business address and tax registrations required to perform the tax calculation are loaded from this account. The tax transaction is returned in the report of the connected account.

    - `automatic_tax.liability.type` (enum, required)
      Type of the account referenced in the request.

      Indicates that the account being referenced is a connected account which is different from the account making the API request but related to it.

      Indicates that the account being referenced is the account making the API request.

    - `automatic_tax.liability.account` (string, optional)
      The connected account being referenced when `type` is `account`.

- `backdate_start_date` (timestamp, optional)
  For new subscriptions, a past timestamp to backdate the subscription’s start date to. If set, the first invoice will contain a proration for the timespan between the start date and the current time. Can be combined with trials and the billing cycle anchor.

- `billing_cycle_anchor` (timestamp, optional)
  A future timestamp in UTC format to anchor the subscription’s [billing cycle](https://docs.stripe.com/docs/subscriptions/billing-cycle.md). The anchor is the reference point that aligns future billing cycle dates. It sets the day of week for `week` intervals, the day of month for `month` and `year` intervals, and the month of year for `year` intervals.

- `billing_cycle_anchor_config` (object, optional)
  Mutually exclusive with billing_cycle_anchor and only valid with monthly and yearly price intervals. When provided, the billing_cycle_anchor is set to the next occurence of the day_of_month at the hour, minute, and second UTC.

  - `billing_cycle_anchor_config.day_of_month` (integer, required)
    The day of the month the billing_cycle_anchor should be. Ranges from 1 to 31.

  - `billing_cycle_anchor_config.hour` (integer, optional)
    The hour of the day the billing_cycle_anchor should be. Ranges from 0 to 23.

  - `billing_cycle_anchor_config.minute` (integer, optional)
    The minute of the hour the billing_cycle_anchor should be. Ranges from 0 to 59.

  - `billing_cycle_anchor_config.month` (integer, optional)
    The month to start full cycle billing periods. Ranges from 1 to 12.

  - `billing_cycle_anchor_config.second` (integer, optional)
    The second of the minute the billing_cycle_anchor should be. Ranges from 0 to 59.

- `cancel_at` (timestamp, optional)
  A timestamp at which the subscription should cancel. If set to a date before the current period ends, this will cause a proration if prorations have been enabled using `proration_behavior`. If set during a future period, this will always cause a proration for that period.

- `cancel_at_period_end` (boolean, optional)
  Indicate whether this subscription should cancel at the end of the current period (`current_period_end`). Defaults to `false`.

- `collection_method` (enum, optional)
  Either `charge_automatically`, or `send_invoice`. When charging automatically, Stripe will attempt to pay this subscription at the end of the cycle using the default source attached to the customer. When sending an invoice, Stripe will email your customer an invoice with payment instructions and mark the subscription as `active`. Defaults to `charge_automatically`.

- `currency` (enum, optional)
  Three-letter [ISO currency code](https://www.iso.org/iso-4217-currency-codes.html), in lowercase. Must be a [supported currency](https://stripe.com/docs/currencies).

- `default_payment_method` (string, optional)
  ID of the default payment method for the subscription. It must belong to the customer associated with the subscription. This takes precedence over `default_source`. If neither are set, invoices will use the customer’s [invoice_settings.default_payment_method](https://docs.stripe.com/docs/api/customers/object.md#customer_object-invoice_settings-default_payment_method) or [default_source](https://docs.stripe.com/docs/api/customers/object.md#customer_object-default_source).

- `default_source` (string, optional)
  ID of the default payment source for the subscription. It must belong to the customer associated with the subscription and be in a chargeable state. If `default_payment_method` is also set, `default_payment_method` will take precedence. If neither are set, invoices will use the customer’s [invoice_settings.default_payment_method](https://docs.stripe.com/docs/api/customers/object.md#customer_object-invoice_settings-default_payment_method) or [default_source](https://docs.stripe.com/docs/api/customers/object.md#customer_object-default_source).

- `default_tax_rates` (array of strings, optional)
  The tax rates that will apply to any subscription item that does not have `tax_rates` set. Invoices created will have their `default_tax_rates` populated from the subscription.

- `description` (string, optional)
  The subscription’s description, meant to be displayable to the customer. Use this field to optionally store an explanation of the subscription for rendering in Stripe surfaces and certain local payment methods UIs.

- `discounts` (array of objects, optional)
  The coupons to redeem into discounts for the subscription. If not specified or empty, inherits the discount from the subscription’s customer.

  - `discounts.coupon` (string, optional)
    ID of the coupon to create a new discount for.

  - `discounts.discount` (string, optional)
    ID of an existing discount on the object (or one of its ancestors) to reuse.

  - `discounts.promotion_code` (string, optional)
    ID of the promotion code to create a new discount for.

- `invoice_settings` (object, optional)
  All invoices will be billed using the specified settings.

  - `invoice_settings.account_tax_ids` (array of strings, optional)
    The account tax IDs associated with the subscription. Will be set on invoices generated by the subscription.

  - `invoice_settings.issuer` (object, optional)
    The connected account that issues the invoice. The invoice is presented with the branding and support information of the specified account.

    - `invoice_settings.issuer.type` (enum, required)
      Type of the account referenced in the request.

      Indicates that the account being referenced is a connected account which is different from the account making the API request but related to it.

      Indicates that the account being referenced is the account making the API request.

    - `invoice_settings.issuer.account` (string, optional)
      The connected account being referenced when `type` is `account`.

- `items` (array of objects, optional)
  A list of up to 20 subscription items, each with an attached price.

  - `items.discounts` (array of objects, optional)
    The coupons to redeem into discounts for the subscription item.

    - `items.discounts.coupon` (string, optional)
      ID of the coupon to create a new discount for.

    - `items.discounts.discount` (string, optional)
      ID of an existing discount on the object (or one of its ancestors) to reuse.

    - `items.discounts.promotion_code` (string, optional)
      ID of the promotion code to create a new discount for.

  - `items.metadata` (object, optional)
    Set of [key-value pairs](https://docs.stripe.com/docs/api/metadata.md) that you can attach to an object. This can be useful for storing additional information about the object in a structured format. Individual keys can be unset by posting an empty value to them. All keys can be unset by posting an empty value to `metadata`.

  - `items.price` (string, optional)
    The ID of the price object.

  - `items.price_data` (object, optional)
    Data used to generate a new [Price](https://docs.stripe.com/docs/api/prices.md) object inline.

    - `items.price_data.currency` (enum, required)
      Three-letter [ISO currency code](https://www.iso.org/iso-4217-currency-codes.html), in lowercase. Must be a [supported currency](https://stripe.com/docs/currencies).

    - `items.price_data.product` (string, required)
      The ID of the [Product](https://docs.stripe.com/api/products) that this [Price](https://docs.stripe.com/api/prices) will belong to.

    - `items.price_data.recurring` (object, required)
      The recurring components of a price such as `interval` and `interval_count`.

      - `items.price_data.recurring.interval` (enum, required)
        Specifies billing frequency. Either `day`, `week`, `month` or `year`.

      - `items.price_data.recurring.interval_count` (integer, optional)
        The number of intervals between subscription billings. For example, `interval=month` and `interval_count=3` bills every 3 months. Maximum of three years interval allowed (3 years, 36 months, or 156 weeks).

    - `items.price_data.tax_behavior` (enum, optional)
      Only required if a [default tax behavior](https://docs.stripe.com/docs/tax/products-prices-tax-categories-tax-behavior.md#setting-a-default-tax-behavior-\(recommended\)) was not provided in the Stripe Tax settings. Specifies whether the price is considered inclusive of taxes or exclusive of taxes. One of `inclusive`, `exclusive`, or `unspecified`. Once specified as either `inclusive` or `exclusive`, it cannot be changed.

    - `items.price_data.unit_amount` (integer, optional)
      A positive integer in  (or 0 for a free price) representing how much to charge.

    - `items.price_data.unit_amount_decimal` (string, optional)
      Same as `unit_amount`, but accepts a decimal value in  with at most 12 decimal places. Only one of `unit_amount` and `unit_amount_decimal` can be set.

  - `items.quantity` (integer, optional)
    Quantity for this item.

  - `items.tax_rates` (array of strings, optional)
    A list of [Tax Rate](https://docs.stripe.com/docs/api/tax_rates.md) ids. These Tax Rates will override the [`default_tax_rates`](https://docs.stripe.com/docs/api/subscriptions/create.md#create_subscription-default_tax_rates) on the Subscription. When updating, pass an empty string to remove previously-defined tax rates.

- `metadata` (object, optional)
  Set of [key-value pairs](https://docs.stripe.com/docs/api/metadata.md) that you can attach to an object. This can be useful for storing additional information about the object in a structured format. Individual keys can be unset by posting an empty value to them. All keys can be unset by posting an empty value to `metadata`.

- `off_session` (boolean, optional)
  Indicates if a customer is on or off-session while an invoice payment is attempted. Defaults to `false` (on-session).

- `on_behalf_of` (string, optional)
  The account on behalf of which to charge, for each of the subscription’s invoices.

- `payment_behavior` (enum, optional)
  Only applies to subscriptions with `collection_method=charge_automatically`.

  Use `allow_incomplete` to create Subscriptions with `status=incomplete` if the first invoice can’t be paid. Creating Subscriptions with this status allows you to manage scenarios where additional customer actions are needed to pay a subscription’s invoice. For example, SCA regulation may require 3DS authentication to complete payment. See the [SCA Migration Guide](https://docs.stripe.com/docs/billing/migration/strong-customer-authentication.md) for Billing to learn more. This is the default behavior.

  Use `default_incomplete` to create Subscriptions with `status=incomplete` when the first invoice requires payment, otherwise start as active. Subscriptions transition to `status=active` when successfully confirming the PaymentIntent on the first invoice. This allows simpler management of scenarios where additional customer actions are needed to pay a subscription’s invoice, such as failed payments, [SCA regulation](https://docs.stripe.com/docs/billing/migration/strong-customer-authentication.md), or collecting a mandate for a bank debit payment method. If the PaymentIntent is not confirmed within 23 hours Subscriptions transition to `status=incomplete_expired`, which is a terminal state.

  Use `error_if_incomplete` if you want Stripe to return an HTTP 402 status code if a subscription’s first invoice can’t be paid. For example, if a payment method requires 3DS authentication due to SCA regulation and further customer action is needed, this parameter doesn’t create a Subscription and returns an error instead. This was the default behavior for API versions prior to 2019-03-14. See the [changelog](https://docs.stripe.com/docs/upgrades.md#2019-03-14) to learn more.

  `pending_if_incomplete` is only used with updates and cannot be passed when creating a Subscription.

  Subscriptions with `collection_method=send_invoice` are automatically activated regardless of the first Invoice status.

- `payment_settings` (object, optional)
  Payment settings to pass to invoices created by the subscription.

  - `payment_settings.payment_method_options` (object, optional)
    Payment-method-specific configuration to provide to invoices created by the subscription.

    - `payment_settings.payment_method_options.acss_debit` (object, optional)
      This sub-hash contains details about the Canadian pre-authorized debit payment method options to pass to the invoice’s PaymentIntent.

      - `payment_settings.payment_method_options.acss_debit.mandate_options` (object, optional)
        Additional fields for Mandate creation

        - `payment_settings.payment_method_options.acss_debit.mandate_options.transaction_type` (enum, optional)
          Transaction type of the mandate.

          Transactions are made for business reasons

          Transactions are made for personal reasons

      - `payment_settings.payment_method_options.acss_debit.verification_method` (enum, optional)
        Verification method for the intent

        Instant verification with fallback to microdeposits.

        Instant verification.

        Verification using microdeposits.

    - `payment_settings.payment_method_options.bancontact` (object, optional)
      This sub-hash contains details about the Bancontact payment method options to pass to the invoice’s PaymentIntent.

      - `payment_settings.payment_method_options.bancontact.preferred_language` (enum, optional)
        Preferred language of the Bancontact authorization page that the customer is redirected to.

        German

        English

        French

        Dutch

    - `payment_settings.payment_method_options.card` (object, optional)
      This sub-hash contains details about the Card payment method options to pass to the invoice’s PaymentIntent.

      - `payment_settings.payment_method_options.card.mandate_options` (object, optional)
        Configuration options for setting up an eMandate for cards issued in India.

        - `payment_settings.payment_method_options.card.mandate_options.amount` (integer, optional)
          Amount to be charged for future payments.

        - `payment_settings.payment_method_options.card.mandate_options.amount_type` (enum, optional)
          One of `fixed` or `maximum`. If `fixed`, the `amount` param refers to the exact amount to be charged in future payments. If `maximum`, the amount charged can be up to the value passed for the `amount` param.

          If `fixed`, the `amount` param refers to the exact amount to be charged in future payments.

          If `maximum`, the amount charged can be up to the value passed for the `amount` param.

        - `payment_settings.payment_method_options.card.mandate_options.description` (string, optional)
          A description of the mandate or subscription that is meant to be displayed to the customer.

      - `payment_settings.payment_method_options.card.network` (string, optional)
        Selected network to process this Subscription on. Depends on the available networks of the card attached to the Subscription. Can be only set confirm-time.

      - `payment_settings.payment_method_options.card.request_three_d_secure` (enum, optional)
        We strongly recommend that you rely on our SCA Engine to automatically prompt your customers for authentication based on risk level and [other requirements](https://docs.stripe.com/docs/strong-customer-authentication.md). However, if you wish to request 3D Secure based on logic from your own fraud engine, provide this option. Read our guide on [manually requesting 3D Secure](https://docs.stripe.com/docs/payments/3d-secure/authentication-flow.md#manual-three-ds) for more information on how this configuration interacts with Radar and our SCA Engine.

        Use `any` to manually request 3DS with a preference for a `frictionless` flow, increasing the likelihood of the authentication being completed without any additional input from the customer.
        3DS will always be attempted if it is supported for the card, but Stripe can’t guarantee your preference because the issuer determines the ultimate authentication flow.
        To learn more about 3DS flows, read our [guide](https://stripe.com/guides/3d-secure-2#frictionless-authentication).

        (Default) Our SCA Engine automatically prompts your customers for authentication based on risk level and other requirements.

        Use `challenge` to request 3DS with a preference for a `challenge` flow, where the customer must respond to a prompt for active authentication. Stripe can’t guarantee your preference because the issuer determines the ultimate authentication flow. To learn more about 3DS flows, read our [guide](https://stripe.com/guides/3d-secure-2#frictionless-authentication).

    - `payment_settings.payment_method_options.customer_balance` (object, optional)
      This sub-hash contains details about the Bank transfer payment method options to pass to the invoice’s PaymentIntent.

      - `payment_settings.payment_method_options.customer_balance.bank_transfer` (object, optional)
        Configuration for the bank transfer funding type, if the `funding_type` is set to `bank_transfer`.

        - `payment_settings.payment_method_options.customer_balance.bank_transfer.eu_bank_transfer` (object, optional)
          Configuration for eu_bank_transfer funding type.

          - `payment_settings.payment_method_options.customer_balance.bank_transfer.eu_bank_transfer.country` (string, required)
            The desired country code of the bank account information. Permitted values include: `BE`, `DE`, `ES`, `FR`, `IE`, or `NL`.

        - `payment_settings.payment_method_options.customer_balance.bank_transfer.type` (enum, optional)
          The bank transfer type that can be used for funding. Permitted values include: `eu_bank_transfer`, `gb_bank_transfer`, `jp_bank_transfer`, `mx_bank_transfer`, or `us_bank_transfer`.

      - `payment_settings.payment_method_options.customer_balance.funding_type` (enum, optional)
        The funding method type to be used when there are not enough funds in the customer balance. Permitted values include: `bank_transfer`.

    - `payment_settings.payment_method_options.konbini` (object, optional)
      This sub-hash contains details about the Konbini payment method options to pass to the invoice’s PaymentIntent.

    - `payment_settings.payment_method_options.sepa_debit` (object, optional)
      This sub-hash contains details about the SEPA Direct Debit payment method options to pass to the invoice’s PaymentIntent.

    - `payment_settings.payment_method_options.us_bank_account` (object, optional)
      This sub-hash contains details about the ACH direct debit payment method options to pass to the invoice’s PaymentIntent.

      - `payment_settings.payment_method_options.us_bank_account.financial_connections` (object, optional)
        Additional fields for Financial Connections Session creation

        - `payment_settings.payment_method_options.us_bank_account.financial_connections.filters` (object, optional)
          Provide filters for the linked accounts that the customer can select for the payment method.

          - `payment_settings.payment_method_options.us_bank_account.financial_connections.filters.account_subcategories` (array of enums, optional)
            The account subcategories to use to filter for selectable accounts. Valid subcategories are `checking` and `savings`.

            Bank account subcategory is checking

            Bank account subcategory is savings

        - `payment_settings.payment_method_options.us_bank_account.financial_connections.permissions` (array of strings, optional)
          The list of permissions to request. If this parameter is passed, the `payment_method` permission must be included. Valid permissions include: `balances`, `ownership`, `payment_method`, and `transactions`.

        - `payment_settings.payment_method_options.us_bank_account.financial_connections.prefetch` (array of enums, optional)
          List of data features that you would like to retrieve upon account creation.

          Requests to prefetch balance data on accounts collected in this session.

          Requests to prefetch ownership data on accounts collected in this session.

          Requests to prefetch transaction data on accounts collected in this session.

      - `payment_settings.payment_method_options.us_bank_account.verification_method` (enum, optional)
        Verification method for the intent

        Instant verification with fallback to microdeposits.

        Instant verification only.

        Verification using microdeposits. Cannot be used with Stripe Checkout, Hosted Invoices, or Payment Element.

  - `payment_settings.payment_method_types` (array of enums, optional)
    The list of payment method types (e.g. card) to provide to the invoice’s PaymentIntent. If not set, Stripe attempts to automatically determine the types to use by looking at the invoice’s default payment method, the subscription’s default payment method, the customer’s default payment method, and your [invoice template settings](https://dashboard.stripe.com/settings/billing/invoice). Should not be specified with payment_method_configuration

    ACH

    Canadian pre-authorized debit

    Amazon Pay

    BECS Direct Debit

    Bacs Direct Debit

    Bancontact

    If set, the Subscription `collection_method` must be `send_invoice`.

    Boleto

    Card

    Cash App Pay

    Bank transfer

    If set, the Subscription `collection_method` must be `send_invoice`.

    EPS

    If set, the Subscription `collection_method` must be `send_invoice`.

    FPX

    If set, the Subscription `collection_method` must be `send_invoice`.

    giropay

    If set, the Subscription `collection_method` must be `send_invoice`.

    GrabPay

    If set, the Subscription `collection_method` must be `send_invoice`.

    iDEAL

    If set, the Subscription `collection_method` must be `send_invoice`.

    Kakao Pay

    Klarna

    If set, the Subscription `collection_method` must be `send_invoice`.

    Konbini

    If set, the Subscription `collection_method` must be `send_invoice`.

    Korean card

    Link

    Multibanco

    If set, the Subscription `collection_method` must be `send_invoice`.

    Naver Pay

    NZ BECS Direct Debit

    Przelewy24

    If set, the Subscription `collection_method` must be `send_invoice`.

    PAYCO

    If set, the Subscription `collection_method` must be `send_invoice`.

    PayNow

    If set, the Subscription `collection_method` must be `send_invoice`.

    PayPal

    PromptPay

    If set, the Subscription `collection_method` must be `send_invoice`.

    Revolut Pay

    SEPA Direct Debit

    SOFORT

    If set, the Subscription `collection_method` must be `send_invoice`.

    ACH direct debit

    WeChat Pay

    If set, the Subscription `collection_method` must be `send_invoice`.

  - `payment_settings.save_default_payment_method` (enum, optional)
    Configure whether Stripe updates `subscription.default_payment_method` when payment succeeds. Defaults to `off` if unspecified.

    Stripe never sets `subscription.default_payment_method`.

    Stripe sets `subscription.default_payment_method` when a subscription payment succeeds.

- `pending_invoice_item_interval` (object, optional)
  Specifies an interval for how often to bill for any pending invoice items. It is analogous to calling [Create an invoice](https://docs.stripe.com/docs/api.md#create_invoice) for the given subscription at the specified interval.

  - `pending_invoice_item_interval.interval` (enum, required)
    Specifies invoicing frequency. Either `day`, `week`, `month` or `year`.

  - `pending_invoice_item_interval.interval_count` (integer, optional)
    The number of intervals between invoices. For example, `interval=month` and `interval_count=3` bills every 3 months. Maximum of one year interval allowed (1 year, 12 months, or 52 weeks).

- `proration_behavior` (enum, optional)
  Determines how to handle [prorations](https://docs.stripe.com/docs/billing/subscriptions/prorations.md) resulting from the `billing_cycle_anchor`. If no value is passed, the default is `create_prorations`.

  **Unsupported** for subscription creation.

  Will cause proration invoice items to be created when applicable.

  Disable creating prorations in this request.

- `transfer_data` (object, optional)
  If specified, the funds from the subscription’s invoices will be transferred to the destination and the ID of the resulting transfers will be found on the resulting charges.

  - `transfer_data.destination` (string, required)
    ID of an existing, connected Stripe account.

  - `transfer_data.amount_percent` (float, optional)
    A non-negative decimal between 0 and 100, with at most two decimal places. This represents the percentage of the subscription invoice total that will be transferred to the destination account. By default, the entire amount is transferred to the destination.

- `trial_end` (string | timestamp, optional)
  Unix timestamp representing the end of the trial period the customer will get before being charged for the first time. If set, trial_end will override the default trial period of the plan the customer is being subscribed to. The special value `now` can be provided to end the customer’s trial immediately. Can be at most two years from `billing_cycle_anchor`. See [Using trial periods on subscriptions](https://docs.stripe.com/docs/billing/subscriptions/trials.md) to learn more.

- `trial_from_plan` (boolean, optional)
  Indicates if a plan’s `trial_period_days` should be applied to the subscription. Setting `trial_end` per subscription is preferred, and this defaults to `false`. Setting this flag to `true` together with `trial_end` is not allowed. See [Using trial periods on subscriptions](https://docs.stripe.com/docs/billing/subscriptions/trials.md) to learn more.

- `trial_period_days` (integer, optional)
  Integer representing the number of trial period days before the customer is charged for the first time. This will always overwrite any trials that might apply via a subscribed plan. See [Using trial periods on subscriptions](https://docs.stripe.com/docs/billing/subscriptions/trials.md) to learn more.

- `trial_settings` (object, optional)
  Settings related to subscription trials.

  - `trial_settings.end_behavior` (object, required)
    Defines how the subscription should behave when the user’s free trial ends.

    - `trial_settings.end_behavior.missing_payment_method` (enum, required)
      Indicates how the subscription should change when the trial ends if the user did not provide a payment method.

      Cancel the subscription if a payment method is not attached when the trial ends.

      Create an invoice when the trial ends, even if the user did not set up a payment method.

      Pause the subscription if a payment method is not attached when the trial ends.

```dotnet
StripeConfiguration.ApiKey = "<<secret key>>";

var options = new SubscriptionCreateOptions
{
    Customer = "cus_Na6dX7aXxi11N4",
    Items = new List<SubscriptionItemOptions>
    {
        new SubscriptionItemOptions { Price = "price_1MowQULkdIwHu7ixraBm864M" },
    },
};
var service = new SubscriptionService();
Subscription subscription = service.Create(options);
```

```go
stripe.Key = "<<secret key>>"

params := &stripe.SubscriptionParams{
  Customer: stripe.String("cus_Na6dX7aXxi11N4"),
  Items: []*stripe.SubscriptionItemsParams{
    &stripe.SubscriptionItemsParams{Price: stripe.String("price_1MowQULkdIwHu7ixraBm864M")},
  },
};
result, err := subscription.New(params);
```

```java
Stripe.apiKey = "<<secret key>>";

SubscriptionCreateParams params =
  SubscriptionCreateParams.builder()
    .setCustomer("cus_Na6dX7aXxi11N4")
    .addItem(
      SubscriptionCreateParams.Item.builder().setPrice("price_1MowQULkdIwHu7ixraBm864M").build()
    )
    .build();

Subscription subscription = Subscription.create(params);
```

```node
const stripe = require('stripe')('<<secret key>>');

const subscription = await stripe.subscriptions.create({
  customer: 'cus_Na6dX7aXxi11N4',
  items: [
    {
      price: 'price_1MowQULkdIwHu7ixraBm864M',
    },
  ],
});
```

```python
import stripe
stripe.api_key = "<<secret key>>"

subscription =
stripe.Subscription.create(
  customer="cus_Na6dX7aXxi11N4",
  items=[{"price": "price_1MowQULkdIwHu7ixraBm864M"}],
)
```

```php
$stripe = new \Stripe\StripeClient('<<secret key>>');

$subscription = $stripe->subscriptions->create([
  'customer' => 'cus_Na6dX7aXxi11N4',
  'items' => [['price' => 'price_1MowQULkdIwHu7ixraBm864M']],
]);
```

```ruby
Stripe.api_key = '<<secret key>>'

subscription = Stripe::Subscription.create({
  customer: 'cus_Na6dX7aXxi11N4',
  items: [{price: 'price_1MowQULkdIwHu7ixraBm864M'}],
})
```

### Response

```json
{
  "id": "sub_1MowQVLkdIwHu7ixeRlqHVzs",
  "object": "subscription",
  "application": null,
  "application_fee_percent": null,
  "automatic_tax": {
    "enabled": false,
    "liability": null
  },
  "billing_cycle_anchor": 1679609767,
  "cancel_at": null,
  "cancel_at_period_end": false,
  "canceled_at": null,
  "cancellation_details": {
    "comment": null,
    "feedback": null,
    "reason": null
  },
  "collection_method": "charge_automatically",
  "created": 1679609767,
  "currency": "usd",
  "customer": "cus_Na6dX7aXxi11N4",
  "days_until_due": null,
  "default_payment_method": null,
  "default_source": null,
  "default_tax_rates": [],
  "description": null,
  "discounts": null,
  "ended_at": null,
  "invoice_settings": {
    "issuer": {
      "type": "self"
    }
  },
  "items": {
    "object": "list",
    "data": [
      {
        "id": "si_Na6dzxczY5fwHx",
        "object": "subscription_item",
        "created": 1679609768,
        "current_period_end": 1682288167,
        "current_period_start": 1679609767,
        "metadata": {},
        "plan": {
          "id": "price_1MowQULkdIwHu7ixraBm864M",
          "object": "plan",
          "active": true,
          "amount": 1000,
          "amount_decimal": "1000",
          "billing_scheme": "per_unit",
          "created": 1679609766,
          "currency": "usd",
          "discounts": null,
          "interval": "month",
          "interval_count": 1,
          "livemode": false,
          "metadata": {},
          "nickname": null,
          "product": "prod_Na6dGcTsmU0I4R",
          "tiers_mode": null,
          "transform_usage": null,
          "trial_period_days": null,
          "usage_type": "licensed"
        },
        "price": {
          "id": "price_1MowQULkdIwHu7ixraBm864M",
          "object": "price",
          "active": true,
          "billing_scheme": "per_unit",
          "created": 1679609766,
          "currency": "usd",
          "custom_unit_amount": null,
          "livemode": false,
          "lookup_key": null,
          "metadata": {},
          "nickname": null,
          "product": "prod_Na6dGcTsmU0I4R",
          "recurring": {
            "interval": "month",
            "interval_count": 1,
            "trial_period_days": null,
            "usage_type": "licensed"
          },
          "tax_behavior": "unspecified",
          "tiers_mode": null,
          "transform_quantity": null,
          "type": "recurring",
          "unit_amount": 1000,
          "unit_amount_decimal": "1000"
        },
        "quantity": 1,
        "subscription": "sub_1MowQVLkdIwHu7ixeRlqHVzs",
        "tax_rates": []
      }
    ],
    "has_more": false,
    "total_count": 1,
    "url": "/v1/subscription_items?subscription=sub_1MowQVLkdIwHu7ixeRlqHVzs"
  },
  "latest_invoice": "in_1MowQWLkdIwHu7ixuzkSPfKd",
  "livemode": false,
  "metadata": {},
  "next_pending_invoice_item_invoice": null,
  "on_behalf_of": null,
  "pause_collection": null,
  "payment_settings": {
    "payment_method_options": null,
    "payment_method_types": null,
    "save_default_payment_method": "off"
  },
  "pending_invoice_item_interval": null,
  "pending_setup_intent": null,
  "pending_update": null,
  "schedule": null,
  "start_date": 1679609767,
  "status": "active",
  "test_clock": null,
  "transfer_data": null,
  "trial_end": null,
  "trial_settings": {
    "end_behavior": {
      "missing_payment_method": "create_invoice"
    }
  },
  "trial_start": null
}
```