Merge vs Xero Accounting API

Merge9.3Visit Xero Accounting API8.5Visit

Higher score Merge #2 in Accounting APIs 9.3/10 Free plan Free plan✓ 4 of 4 features Visit Merge

vs

Xero Accounting API #7 in Accounting APIs 8.5/10 Free plan Free plan✓ 4 of 4 features Visit Xero

• Merge fits best

  Developers needing standardized accounting models

• Xero Accounting API fits best

  Xero-specific production integrations

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Side by side

Feature	Merge 9.3/10 Visit ↗	Xero Accounting API 8.5/10 Visit ↗
At a glance
Editor score	9.3	8.5
Ranking	#2 in Accounting APIs	#7 in Accounting APIs
Best for	Developers needing standardized accounting models	Xero-specific production integrations
Pricing model	Free plan + paid	Free plan + paid
Starting price	$650/unit/mo	—
Free plan	✓	✓
Free trial	—	—
Deployment	Cloud	Cloud
Support	Email, Live chat, Docs	Community, Docs
Compliance	SOC 2, ISO 27001, GDPR, HIPAA	2FA
Built for	Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Merge 4/4 · Xero Accounting API 4/4
Invoice sync	✓	✓
Journal entries	✓	✓
Webhooks	✓	✓
Sandbox environment	✓	✓
Specs
Included connections	10 connections	50 connections (best)
Sync direction	Two_way	Two_way
API authentication	Both	Oauth2
Our review
Pros	Normalized models across eight accounting platforms Read and write invoices, bills, and journal entries Webhooks, sandboxes, SDKs, and Merge Link authorization	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
Cons	Paid Launch starts at $650 per month Professional and Enterprise pricing is contract-based Advanced security and uptime SLAs require Enterprise	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
Our verdict	Merge provides a unified Accounting API for software companies building customer-facing connections to accounting platforms. It normalizes common financial models and supports reading and writing data such as invoices, bills, accounts,… Read the review →	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 →

Strengths and trade-offs

• Merge — where it wins

  • Normalized models across eight accounting platforms
  • Read and write invoices, bills, and journal entries
  • Webhooks, sandboxes, SDKs, and Merge Link authorization

  Where it doesn't

  • Paid Launch starts at $650 per month
  • Professional and Enterprise pricing is contract-based
  • Advanced security and uptime SLAs require Enterprise

• 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

• Merge9.3/10 · Free plan

  A developer-focused accounting API with normalized models, two-way sync, and sandbox support.

  Visit MergeFull verdict →
• Xero Accounting API8.5/10 · Free plan

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

  Visit XeroFull verdict →