Freedom251 › Direct Debit Processing Software
SlimPay

What SlimPay is
SlimPay helps businesses collect recurring payments using account-to-account payments, direct debits, and open banking services. Its payment uses include subscription and invoice collection, as well as updating payment methods through direct debit. Customers can sign SEPA mandates digitally using a checkbox or a one-time password. SlimPay supports SEPA Direct Debit CORE and B2B, plus SEPA Credit Transfer. The maker says it processes direct debits and credit transfers in euros and accepts payments from countries within the SEPA jurisdictional scope. Businesses can connect through a REST API or use File Transfer for batch processing. Checkout can be added to websites and mobile applications through pop-in, redirection, or iFrame options. Payment management is available through a Dashboard, REST API, and file transfer interface, with manual or automatic retries for failed direct debits. SlimPay says it is authorized and supervised by France’s ACPR as a payment institution, follows GDPR requirements, and hosts its servers entirely within the European Union with Amazon Web Services. Founded in 2010 and headquartered in Paris, SlimPay offers paid production service with pricing on request. Production accounts follow validated pre-production tests and completed KYC.
Who it suits
SlimPay suits businesses that need to collect recurring or invoice payments by SEPA direct debit or credit transfer, with API or batch integration options. It is not intended as an ERP, CRM, or subscription relationship-management platform.
What it does well
- Supports SEPA CORE and B2B direct debits and credit transfers.
- Customers can sign mandates with a checkbox or one-time password.
- Offers REST API and batch File Transfer integrations.
- Checkout can be integrated into websites and mobile apps.
- Failed direct debits can be retried manually or automatically.
What to know first
- There is no free plan.
- Pricing is available by contacting SlimPay.
- Production access follows validated pre-production tests and completed KYC.
Limits
There is no free plan, and production service pricing is on request. Production accounts are created after pre-production tests are completed and validated and the customer completes KYC.
Plans
| Plan | Billed and limits | Price |
|---|---|---|
| Production service | Pricing by contacting SlimPay | On request |
As slimpay.com lists them, read 29 Sept 2026. The maker's own page has the final word.
Getting started
- Visit https://www.slimpay.com/sepa-payments/.
- Contact SlimPay for production service pricing.
- Choose a REST API integration or File Transfer for batch processing.
- Integrate checkout into your website or mobile app using pop-in, redirection, or iFrame options.
- Complete pre-production tests and have them validated, then complete KYC to obtain a production account.
Verdict
Consider SlimPay if your business needs euro payments through SEPA schemes and wants API, batch, or hosted checkout integration options. Look elsewhere if you need an ERP, CRM, or subscription relationship-management platform, or require a free plan.
Questions
How much does SlimPay cost?
Pricing is on request; contact SlimPay about the production service.
Does SlimPay have a free plan or trial?
SlimPay has no free plan. No free-trial terms are provided.
Which payment schemes and currencies does SlimPay support?
It supports SEPA Direct Debit CORE and B2B and SEPA Credit Transfer. The maker says it supports direct debits and credit transfers in euros and accepts payments from countries in the SEPA jurisdictional scope.
How can a business integrate SlimPay?
Businesses can use a REST API or File Transfer for batch processing. Checkout options include pop-in, redirection, and iFrame for websites and mobile applications.
What is required for production access?
SlimPay says it creates production accounts after pre-production tests are completed and validated and the customer completes KYC.
Is SlimPay an ERP or CRM?
No. SlimPay's FAQ says its payment solution is not an ERP, CRM, or subscription relationship-management platform.
Facts from SlimPay's own pages
- Checkout
- Checkout can be integrated into websites and mobile applications, with pop-in, redirection and iFrame options. · slimpay.com, 29 Sept 2026
- Currency and coverage
- SlimPay says it supports direct debits and credit transfers in euros and accepts payments from countries in the SEPA jurisdictional scope. · dev.slimpay.com, 29 Sept 2026
- Data hosting
- SlimPay says its servers are located entirely within the European Union with Amazon Web Services. · slimpay.com, 29 Sept 2026
- Digital mandates
- Customers can sign SEPA mandates digitally using a checkbox or one-time password. · slimpay.com, 29 Sept 2026
- Founded
- 2010 · slimpay.com, 23 Sept 2026
- Headquarters
- Paris, France · slimpay.com, 23 Sept 2026
- Integrations
- Merchants can integrate SlimPay through a REST API or use its File Transfer interface for batch processing. · dev.slimpay.com, 29 Sept 2026
- Intended customers
- SlimPay’s FAQ says its payment solution is not an ERP, CRM or subscription relationship-management platform. · dev.slimpay.com, 29 Sept 2026
- Payment management
- Accounts are accessible through a Dashboard, REST API and file transfer interface. · dev.slimpay.com, 29 Sept 2026
- Payment retries
- SlimPay offers manual or automatic retry options for failed SEPA direct debit transactions. · slimpay.com, 29 Sept 2026
- Payment schemes
- SlimPay supports SEPA Direct Debit CORE, SEPA Direct Debit B2B and SEPA Credit Transfer. · dev.slimpay.com, 29 Sept 2026
- Payment uses
- The service supports recurring subscription payments, invoice payments and payment method updates using direct debit. · slimpay.com, 29 Sept 2026
- Product
- SlimPay helps businesses automate recurring payment collection through account-to-account payments, direct debits and open banking services. · slimpay.com, 29 Sept 2026
- Production access
- SlimPay says it creates production accounts after pre-production tests are completed and validated and the customer completes KYC. · dev.slimpay.com, 29 Sept 2026
- Security and authorization
- SlimPay states that it is authorized and supervised by France’s ACPR as a payment institution and is subject to GDPR requirements. · slimpay.com, 29 Sept 2026
- Support
- SlimPay’s developer center invites users to send questions to its dedicated team for help with errors and documentation. · dev.slimpay.com, 29 Sept 2026
Where SlimPay stands on Freedom251
- Direct Debit Processing Software#14 of 22
- Payment Processing Software#57 of 71
