---
title: "Subscriptions and contracts with non-fixed time intervals"
description: "Choose your transaction type to find out more about the applicable PSD2 SCA guidelines for subscription and non-fixed contract payments."
url: "https://docs.adyen.com/online-payments/psd2-sca-compliance-and-implementation-guide/business-models/subscriptions"
source_url: "https://docs.adyen.com/online-payments/psd2-sca-compliance-and-implementation-guide/business-models/subscriptions.md"
canonical: "https://docs.adyen.com/online-payments/psd2-sca-compliance-and-implementation-guide/business-models/subscriptions"
last_modified: "2026-05-26T13:48:54+02:00"
language: "en"
---

# Subscriptions and contracts with non-fixed time intervals

Choose your transaction type to find out more about the applicable PSD2 SCA guidelines for subscription and non-fixed contract payments.

[View source](/online-payments/psd2-sca-compliance-and-implementation-guide/business-models/subscriptions.md)

This page points you to PSD2 SCA guidelines for subscription and non-fixed contract payments.

## Requirements

Before you begin, take into account the following requirements:

| Requirement          | Description                                                                |
| -------------------- | -------------------------------------------------------------------------- |
| **Integration type** | An [online payments integration](/online-payments/build-your-integration). |

## Choose your transaction type

###### [First transaction](/online-payments/psd2-sca-compliance-and-implementation-guide/sca-options)

[Initial transaction where shopper agrees to the terms and conditions of later charges.](/online-payments/psd2-sca-compliance-and-implementation-guide/sca-options)

###### [Later transactions](/online-payments/psd2-sca-compliance-and-implementation-guide/business-models/subsequent-payments)

[Subsequent charges as described in the initial terms and conditions.](/online-payments/psd2-sca-compliance-and-implementation-guide/business-models/subsequent-payments)

[Previous question](/online-payments/psd2-sca-compliance-and-implementation-guide/business-models)

## See also

* [Business models](/online-payments/psd2-sca-compliance-and-implementation-guide/business-models)
* [Business models overview](/online-payments/psd2-sca-compliance-and-implementation-guide/business-models-overview)