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Head-to-head · Accounting APIs

Xero Accounting API vs QuickBooks Online Accounting API

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score Xero Accounting API #7 in Accounting APIs 8.5/10 Free plan Free plan✓ 4 of 4 features Visit Xero
QuickBooks Online Accounting API #8 in Accounting APIs 8.4/10 Free plan Free plan✓ 4 of 4 features Visit QuickBooks

Xero Accounting API leads on 0 checks, QuickBooks Online Accounting API on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreXero Accounting API · 8.5/10
  • Free planboth

Xero Accounting API scores higher on our rubric for accounting apis: 8.5 against 8.4 out of 10; our editors rank them #7 and #8.

Xero Accounting API is the better fit for xero-specific production integrations. QuickBooks Online Accounting API is the better fit for quickBooks Online developers.

  • Xero Accounting API fits best

    Xero-specific production integrations

  • QuickBooks Online Accounting API fits best

    QuickBooks Online developers

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Side by side

Feature Xero Accounting API 8.5/10 Visit ↗ QuickBooks Online Accounting API 8.4/10 Visit ↗
At a glance
Editor score 8.5 8.4
Ranking #7 in Accounting APIs #8 in Accounting APIs
Best for Xero-specific production integrations QuickBooks Online developers
Pricing model Free plan + paid Free plan + paid
Starting price — —
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Support Community, Docs Docs
Built for Solo, Small business, Mid-market, Enterprise Small business, Mid-market, Enterprise
Features Xero Accounting API 4/4 · QuickBooks Online Accounting API 4/4
Invoice sync ✓ ✓
Journal entries ✓ ✓
Webhooks ✓ ✓
Sandbox environment ✓ ✓
Specs
Included connections 50 connections Not checked yet
Sync direction Two_way Two_way
API authentication Oauth2 Oauth2
Our review
Pros
  • Invoice, bill, journal and report access with CRUD support
  • OAuth 2.0, webhooks, SDKs and OpenAPI specifications
  • Demo company and API Explorer support development workflows
  • Invoice and journal-entry access with two-way synchronization
  • OAuth 2.0, sandbox companies, and webhook signature verification
  • Free Builder plan with uncapped Core API credits
Cons
  • Limited to Xero data rather than multiple accounting platforms
  • Higher tiers are needed for larger connection and egress limits
  • Journals endpoint access is subject to tier and approval requirements
  • Paid-tier prices are not provided as conventional monthly amounts
  • Variable API fees may apply above included CorePlus credits
  • Focused on QuickBooks Online rather than a broad accounting ecosystem
Our verdict

Xero Accounting API connects applications to Xero organisations and exposes accounting data for small businesses, accountants, bookkeepers and connected-app ecosystems. Developers can retrieve, create, update, delete and void invoices and…

Read the review →

QuickBooks Online Accounting API connects applications to QuickBooks Online companies and accounting data. It is aimed at developers building integrations that need invoice and journal-entry synchronization, accounting-data creation and…

Read the review →
  1. Xero Accounting APIAccounting APIs 8.5Free plan
  2. QuickBooks Online Accounting APIAccounting APIs 8.4Free plan

Strengths and trade-offs

  • Xero Accounting API — where it wins

    • Invoice, bill, journal and report access with CRUD support
    • OAuth 2.0, webhooks, SDKs and OpenAPI specifications
    • Demo company and API Explorer support development workflows

    Where it doesn't

    • Limited to Xero data rather than multiple accounting platforms
    • Higher tiers are needed for larger connection and egress limits
    • Journals endpoint access is subject to tier and approval requirements

  • QuickBooks Online Accounting API — where it wins

    • Invoice and journal-entry access with two-way synchronization
    • OAuth 2.0, sandbox companies, and webhook signature verification
    • Free Builder plan with uncapped Core API credits

    Where it doesn't

    • Paid-tier prices are not provided as conventional monthly amounts
    • Variable API fees may apply above included CorePlus credits
    • Focused on QuickBooks Online rather than a broad accounting ecosystem
  • Xero Accounting API8.5/10 · Free plan

    A focused API for production integrations built around Xero accounting data.

    Visit XeroFull verdict →
  • QuickBooks Online Accounting API8.4/10 · Free plan

    A focused accounting API for syncing QuickBooks Online data with connected applications.

    Visit QuickBooksFull verdict →

More comparisons

All accounting APIs comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update