SlimPay
SlimPay is a Paris-based, ACPR-licensed Payment Institution specializing in recurring account-to-account payments — SEPA Direct Debit, SEPA Credit Transfer, and open banking — across 36 Eurozone countries, serving mid-market and enterprise merchants in utilities, insurance, SaaS, and financial services.
- Company typePrivate
- Founded2012
- HeadquartersParis, France
- Headcount51–100
- GTM typeB2B
- OfferingSoftware
What SlimPay does
SlimPay's business model is transaction-fee based, with quote-based pricing tailored to merchant volume and no publicly disclosed rate cards. The company operates an API-first go-to-market motion targeting mid-market and enterprise merchants, combining direct enterprise sales (via website booking appointments and dedicated account managers) with developer-led adoption through a comprehensive Developer Center. Its named customer base spans Utilities (OVO Energy), Insurance, SaaS, Financial Services, Staffing & Recruitment (Randstad), Media & Sports (RMC Sport), and Non-profit (UNICEF), supported by a partner ecosystem of accounting, subscription-management, CRM, invoicing, and PSP resellers. Since April 2024, SlimPay has operated as a subsidiary of Sweden's Trustly Group AB (listed on Nasdaq Stockholm), with joint data-controller arrangements in place for account-information and SEPA direct-debit acquiring services.
SlimPay firmographics
Firmographics- Name
- SlimPay
- Legal name
- SlimPay SA
- Website
- https://slimpay.com
- Company type
- Private
- Founded year
- 2012
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- SlimPay is a Paris-based, ACPR-licensed Payment Institution specializing in recurring account-to-account payments — SEPA Direct Debit, SEPA Credit Transfer, and open banking — across 36 Eurozone countries, serving mid-market and enterprise merchants in utilities, insurance, SaaS, and financial services.
- Ownership category
- akta.pro rank
SlimPay industry classification
Industry- Product category
- Recurring Payment Processing Software
- NAICS
- Financial Transactions Processing, Reserve, and Clearinghouse Activities (52232)
- akta.pro primary industry
- A2A Payment Initiation Service Providers (PISPs) (FSAMAFAB)
Keywords
Where SlimPay is headquartered
LocationHeadquarters
- HQ city
- Paris
- HQ country
- France
- HQ region
- Europe
Offices1 record
Markets served
SlimPay business model
Business model- GTM type
- B2B
- Offering type
- Software
- Cost components
- Technology or R&D, Personnel, Operations, Infrastructure, Marketing or Sales, Others
Revenue model
- Payment Processing Services: SlimPay acts as a licensed Payment Institution, processing SEPA Direct Debit, SEPA Credit Transfer, and open banking payments on behalf of merchants. Revenue is generated through transaction processing fees based on payment volumes collected.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Transaction based/ take rate | Monthly | Quote-based pricing tailored to merchant requirements |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels6 records
SlimPay product offering
Product offeringCore offering
SlimPay is an ACPR-licensed Payment Institution that provides account-to-account payment infrastructure for recurring payments across 36 Eurozone countries. Its core products — SlimCollect SEPA (open banking payments with verified IBAN) and Direct Debit DD (SEPA direct debits with digital mandate creation) — are exposed through a REST API and a File Transfer CSV batch interface, and bundled with Checkout & e-Signature, Automatic Retry, Mandate Library, Dashboard, and Payment Link capabilities sold to merchants via direct enterprise sales and developer-led self-service integration.
Product overview
SlimPay is an account-to-account payment platform specializing in recurring payment collection across Europe. The product portfolio centers on two core products: SlimCollect SEPA (open banking-powered payments using verified IBAN from the customer's bank) and Direct Debit DD (SEPA standard direct debits with digital mandate creation). These core products are complemented by Checkout & e-Signature for digital mandate capture, Automatic Retry for failed payment recovery, a Mandate Library for mandate management, a Dashboard for transaction monitoring and reporting, Payment Link for URL-based collections, and File Transfer for high-volume batch processing. All products operate within the SEPA (Single Euro Payments Area) across 36 Eurozone countries, processing transactions exclusively in EUR.
Differentiator
Problem solved
Functional benefit
Products and services
- SlimCollect SEPA Open banking-powered payment solution that uses bank APIs to collect a verified IBAN directly from the customer's bank, enabling recurring SEPA payments with bank-grade authentication and reduced fraud. Designed for European merchants needing secure account-to-account recurring collection.
- Direct Debit DD SEPA standard direct debit solution enabling fully digital mandate creation and recurring payment collection across the entire Eurozone, supporting both SEPA Direct Debit CORE and B2B schemes. Targeted at merchants across Europe digitising direct-debit enrolment.
- Checkout & e-Signature Digital checkout flow with electronic signature capability for capturing SEPA mandates and authorising recurring payments in a single operation, supporting subscription business models and freemium services.
- Mandate Library Repository for managing SEPA mandates, allowing merchants to track, search, and manage all signed mandates from a centralised location.
- Dashboard Web-based merchant portal for monitoring transaction activity, generating reports, and tracking subscribers, mandates, and transactions to manage the overall payment operation.
- File Transfer Batch processing interface using a simplified SlimPay CSV format for processing high volumes of payment operations simultaneously, suited to enterprise-scale recurring payment management.
Quantifiable outcome
- 30% of failed transactions are recovered with Automatic Retry
- +3 more outcomes
Companies that use SlimPay
Customer profileNamed customers4 records
Segments5 records
Ideal customer profiles5 records
SlimPay technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- Yes
- API docs
- API detail
Core technology
AI maturity
App detail
Integration1 record
Feature7 records
SlimPay partnerships and signals
Strategic signalPartnerships
Two partnerships are on record, tiered core and minor.
- BNP ParibascoreBNP Paribas acts as a separate Data Controller and direct participant in European interbank exchange systems for payment processing. SlimPay shares transaction data with BNP Paribas as part of payment service provision.
- Partner EcosystemminorSlimPay maintains a partner ecosystem across multiple industries including accounting, subscription management, CRMs, invoicing, and payment service providers. These partners extend the SlimPay solution to address a wider array of business concerns for merchants.
Scale indicators6 records
Recent moves6 records
Expansion highlights2 records
SlimPay competitors and assessment
Company assessmentDirect peers
- GoCardless: UK-headquartered A2A payment specialist focused on recurring bank-to-bank payments via Direct Debit and Open Banking. Closest functional competitor to SlimPay with overlapping SEPA coverage, recurring-billing focus and similar enterprise/B2B GTM.
- Trustly Group AB: Swedish A2A/Open Banking payment specialist listed on Nasdaq Stockholm; SlimPay's parent company. Operates the same account-to-account rails across Europe and is both the controlling shareholder and a directly comparable recurring A2A business.
- Mollie: Amsterdam-headquartered European PSP offering SEPA Direct Debit, recurring billing and an expanding API to SMB and mid-market merchants. Most directly comparable regional competitor by geography (Benelux + broader Europe), product set and merchant tier.
Broad incumbents
- Stripe: Global payment platform offering SEPA Direct Debit and recurring billing as part of its broader API suite. Competes with SlimPay in the recurring-payments category but inside a much wider product portfolio across cards, wallets and global methods.
- Adyen: Enterprise-grade global PSP supporting SEPA Direct Debit and recurring billing alongside cards and local APMs. Comparable to SlimPay's enterprise/mid-market GTM but operates at much greater scale across multiple geographies and methods.
- Worldline: Large European payment processor and merchant acquirer serving enterprise merchants across SEPA. Competes broadly with SlimPay in SEPA direct-debit acquiring and recurring billing but as part of a much larger card and APM portfolio.
- Nexi: Italian-headquartered European payments group with merchant acquiring, SEPA direct-debit processing and digital banking services. Overlaps with SlimPay in SEPA recurring acquiring for European enterprises, but as part of a multi-country, multi-product group.
Emerging players
- Token.io: London-based Open Banking payment initiation and account-information platform serving banks and merchants across Europe. Directly overlaps with SlimCollect on the bank-API layer and is emerging as a competing PIS/commerce rail.
- TrueLayer: UK-based Open Banking network providing payment initiation and data connectivity to merchants and fintechs across Europe. Competes with SlimCollect as an A2A PIS layer and increasingly serves recurring-payment use cases.
Regional players
- Buckaroo: Dutch-headquartered PSP offering SEPA Direct Debit, recurring billing and a broad payment-method mix primarily across the Benelux market. Comparable recurring-payments functionality to SlimPay with a more concentrated regional footprint.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
SlimPay social profiles
Digital presenceSlimPay compliance and trust
Trust signalCompliance2 records
SlimPay financial estimates
Financial estimateRevenue estimate
Valuation estimate
SlimPay leadership team
Management profileNumber of profiles
Profiles3 records
SlimPay funding detail
Funding detailFunding overview
Funding rounds2 records
Investors2 records
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
SlimPay M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about SlimPay
What does SlimPay do?
SlimPay is an ACPR-licensed Payment Institution that provides account-to-account payment infrastructure for recurring payments across 36 Eurozone countries. Its core products — SlimCollect SEPA (open banking payments with verified IBAN) and Direct Debit DD (SEPA direct debits with digital mandate creation) — are exposed through a REST API and a File Transfer CSV batch interface, and bundled with Checkout & e-Signature, Automatic Retry, Mandate Library, Dashboard, and Payment Link capabilities sold to merchants via direct enterprise sales and developer-led self-service integration.
Is SlimPay a public or private company?
SlimPay is a private company. It is classified as corporate owned and is currently operating.
When was SlimPay founded?
SlimPay was founded in 2012. It employs 51 to 100 people.
Where is SlimPay based?
SlimPay is headquartered in Paris, France, in the Europe region.
How does SlimPay make money?
One revenue line is on record: payment Processing Services.
Who are SlimPay's main competitors?
Direct peers on record are GoCardless, Trustly Group AB and Mollie. Broad incumbents are Stripe, Adyen, Worldline and Nexi. Emerging players are Token.io and TrueLayer. Buckaroo is listed as a regional player.
Does SlimPay have an API?
Yes. SlimPay offers a REST API for web-based applications and a File Transfer interface for batch processing. The REST API is secured via OAuth 2.0 protocol with Bearer token authentication, uses JSON message bodies formatted as application/hal+json, and supports TLS 1.1 and TLS 1.2. The File Transfer interface uses a simplified SlimPay CSV format with public key authentication. API access requires a creditor reference, app name, and app secret, available through the Dashboard. Two environments exist: PREPROD (https://api.preprod.slimpay.com) for development/testing and PROD (https://api.slimpay.net) for live payments. Demo credentials are provided for testing. Webhooks are supported with a maximum of 16 per account. The API supports SEPA Direct Debit CORE, SEPA Direct Debit B2B, and SEPA Credit Transfer schemes, processing all transactions in EUR across the Eurozone (36 countries). Developer documentation is at dev.slimpay.com.
What industry is SlimPay in?
SlimPay's product category is Recurring Payment Processing Software. Its primary akta.pro industry code is FSAMAFAB, A2A Payment Initiation Service Providers (PISPs). Its NAICS code is 52232.