Accounting APIs
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2.5M SDK downloads/mo
1.7M SDK downloads/mo
133.2M SDK downloads/mo
Popular order highlights editorial picks, then ranks providers by monthly downloads of mapped SDKs on npm and PyPI (latest refresh 2026-10-26; unavailable measurements retain older counts). Others follow A–Z.
Counts reflect unique named profiles assigned to this category. Documentation and integration details vary by provider.
Working with accounting APIs
October 2026: seven finance software updates bringing accounting into AI assistants →
Accounting APIs expose the general ledger, invoices, bills, payments, and bank transactions of an accounting system. SaaS products use them to push invoices, reconcile payments, pull financial data for lending or reporting, and keep customer records in sync with the books.
One integration or many
Each accounting system has its own auth model, data model, and rate limits, so every native integration is a separate project. Apideck’s guide to accounting integrations for SaaS covers the common use cases and the systems your customers are likely to run. To connect QuickBooks, Xero, NetSuite, Sage, Exact Online and others through one data model, see the unified accounting API.
Explore ERP APIs →