Finance & Accounting·Standings

Accounting APIs: Compare Pricing and Integrations

Accounting APIs connect accounting software with other apps; the choice turns on the records you need to sync and the platforms your app runs on.

Use the board to compare free plans, starting prices, included connections, invoice and journal-entry sync, sync direction, webhooks, sandbox environments, and API authentication. Each entry shows a signal score out of 10 plus marks for an API, open-source code, and a free tier.

  • 27 platforms
  • 5 with a public API on this page
  • 12 with a free tier
  • Checked 23 Sept 2026
  1. 1
    F
    FreeAgentfreeagent.com

    Accounting software for web and phones; free to use, with a 30-day trial and paid options.

    6.6 APIOpenFree Free tier
  2. 2
    ZB
    Zoho Bookszoho.com

    Bookkeeping app for Android and iOS that imports bank activity; includes a no-cost option.

    6.4 APIOpenFree Free tier · from $15/mo
  3. 3
    K
    Knitgetknit.dev

    A service for connecting apps, available on web and phones with a free option.

    6.4 APIOpenFree Free tier · from $29/mo
  4. 4
    MB
    MYOB Businessmyob.com

    Accounting software with bank feeds, invoice creation, and automatic reconciliation; paid, with a 14-day trial.

    6.3 APIOpenFree From A$15/mo
  5. 5
    F
    FreshBooksfreshbooks.com

    Paid accounting software for web, computers, phones, and add-ons; includes a 30-day trial.

    6.3 APIOpenFree From $4.60/mo
  6. 6
    BA
    Billy APIbilly.dk

    JSON REST API for Billy accounting, with company tokens or basic login; free plan available.

    6.3 APIOpenFree Free tier · from 160 DKK/mo
  7. 7
    EB
    e-Boekhouden APIe-boekhouden.nl

    Online bookkeeping with an API for adding or retrieving invoices and orders; from €9.95/month.

    6.3 APIOpenFree Free tier · from €4.98/mo
  8. 8
    K
    KashFlowkashflow.com

    Online accounting with receipt capture across web, mobile, and API; from £13.50/month.

    6.2 APIOpenFree From £97/yr
  9. 9
    MA
    Moneybird APIdeveloper.moneybird.com

    REST API for sending invoices, syncing contacts, and importing products; from €3/month.

    6.1 APIOpenFree Free tier · from €3/mo
  10. 10
    CQ
    Conductor QuickBooks Desktop APIconductor.is

    Real-time read/write API for QuickBooks Desktop and Enterprise, with 256 endpoints.

    6.0 APIOpenFree Free tier · from $49/mo
  11. 11
    EO
    Exact Onlineexact.com

    Web ERP software with finance tools, from £25/month and a 30-day trial.

    5.9 APIOpenFree From £91/mo (lower tiers unpriced)
  12. 12
    Q
    Qoyodqoyod.com

    Cloud accounting with invoicing, journals, financial reports, and VAT reporting; 14-day trial.

    5.9 APIOpenFree —
  13. 13
    HA
    Holded APIholded.com

    The Holded API lets businesses manage invoices, contacts, products, and other business data programmatically.

    5.9 APIOpenFree From $15/mo
  14. 14
    AA
    AccountRight APIdeveloper.myob.com

    Business API linking apps with AccountRight, Essentials, and MYOB Business files; from $110/month.

    5.9 APIOpenFree From A$66/mo
  15. 15
    M
    Mergemerge.dev

    Single API for product integrations, with a free plan and paid plans from $650/month.

    5.9 APIOpenFree Free tier · from $650/mo
  16. 16
    QO
    QuickBooks Online Accounting APIdeveloper.intuit.com

    REST API for QuickBooks workflows such as invoicing and inventory, with a free plan.

    5.9 APIOpenFree Free tier · from $300/mo
  17. 17
    F
    Fortnoxfortnox.se

    Paid accounting on web and mobile with bank feeds and automatic reconciliation.

    5.8 APIOpenFree —
  18. 18
    R
    Rutterrutter.com

    Unified API for reading, writing, updating, and removing data across connected platforms.

    5.8 APIOpenFree Free tier
  19. 19
    XA
    Xero Accounting APIdeveloper.xero.com

    Accounting API for Xero integrations, including contact updates and invoice payments; free plan, paid from A$35/mo.

    5.7 APIOpenFree Free tier · from A$35/mo
  20. 20
    A
    Akauntingakaunting.com
    5.7 APIOpenFree Free tier · from $72/yr
  21. 21
    TA
    Truto Accounting APItruto.one

    Unified accounting API for real-time read/write data across 11 integrations; from $999/yr with trial.

    5.6 APIOpenFree From $999/yr
  22. 22
    A
    Apideckapideck.com

    Unified API normalizing over 200 app connectors; paid plans start at $599/month.

    5.4 APIOpenFree From $599/mo
  23. 23
    UT
    Unified.to Accounting APIunified.to

    Accounting API for real-time data across platforms, with standardized bills, invoices and reports; from $750/mo.

    5.4 APIOpenFree From $750/mo
  24. 24
    TA
    Twinfield APIdevelopers.twinfield.com

    Accounting API for Twinfield data and web services, including invoices, payments and budgets; pricing on request.

    5.0 APIOpenFree From €58/mo
  25. 25
    C
    Codatcodat.io

    Codat gives banks on-demand ERP data and turns it into forward-looking insights for client relationships, growth opportunities, and decision-making.

    4.9 APIOpenFree —

Places #1, #2, #3, #4, #5 on this board are open to sponsors. Take #1 · Other ways to advertise

How to choose

Which platforms does it need to run on?

Choose a tool that supports the places your app operates. The board covers web, API, Android, iOS, Windows, and macOS options.

An API is a connection that lets software exchange data without manual copying.

What accounting data must sync?

Match the tool to the records you need: invoice sync, journal entries, or both.

Check sync direction as well. It shows whether data can move into the accounting system, out to another app, or in both directions.

Do you need webhooks or a sandbox?

Choose webhooks when your app needs notices about accounting changes instead of checking repeatedly.

A sandbox is a separate environment for trying an integration. Compare sandbox availability before connecting live books.

How should you compare price and trial terms?

Start with the free-plan mark, then check the paid starting price and trial period. Billy API lists a free plan, paid plans from 160 DKK a month, and a 30-day trial.

Published examples vary: AccountRight API starts at 110 per month, Apideck at $599 per month with a 30-day trial, and e-Boekhouden API at €9.95 per month with a 14-day trial.

What connections and authentication does it include?

Compare included connections and the API authentication method with your existing software setup.

Authentication is the sign-in method software uses when calling an API.

Questions

Which accounting APIs have a free plan?

Billy API, Conductor QuickBooks Desktop API, and e-Boekhouden API are marked with a free plan. The board shows this status for other entries as well.

Which accounting APIs offer a free trial?

Billy API lists a 30-day trial, Apideck lists a 30-day trial, and e-Boekhouden API lists a 14-day trial. Check each entry for its current terms.

How much does AccountRight API cost?

AccountRight API lists a paid plan from 110 per month and no free plan.

What platforms do these accounting APIs support?

The board covers web, API, Android, iOS, Windows, and macOS platforms. Check an entry's platform marks against the apps you need to connect.

What does a sandbox environment mean for an accounting API?

A sandbox is a separate environment for trying an integration before using live accounting data. The board compares sandbox availability.

Some top positions on this board can be paid placements, standing where they were sold. The facts on each platform are not for sale. How we rank · Disclosure