Skip to content

Adfin / Developer

A single API for invoicing, payments, credit control & accounting software.

Get started

What you can build

Direct integration is perfect when one biller uses Adfin APIs in their own stack.

Create invoices programmatically

Generate and send invoices from your app; Adfin handles payment links and reminders.

Take payments reliably

Direct Debit and cards with automatic reconciliation — fewer failed payments, less manual work.

Sync with accounting

Keep Xero/QuickBooks in lockstep. No duplicate data or custom export jobs.

Automate credit control

Smart reminders, dunning flows, and status webhooks to update your CRM in real time.

Start your direct integration

Use our APIs to create invoices, collect payments, and keep your accounting in sync — in hours, not weeks.