Merge
Merge: A developer-focused accounting API with normalized models, two-way sync, and sandbox support. Ranked #2 of 28 in Accounting APIs by our editors (9.3/10); pricing: Free plan; best for developers needing standardized accounting models.
At a glance
- Editor score9.3 / 10
- PricingFree plan
- Best forDevelopers needing standardized accounting models
- Free planYes
- Paid from$650/unit/mo
- Sync directionTwo_way
- Founded2020
- Facts checked20 Sep 2026
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
Our verdict on Merge
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, payments, expenses, and journal entries. Developers and product teams can connect services including QuickBooks Online, Xero, NetSuite, Sage Intacct, FreshBooks, FreeAgent, Clear Books, and Zoho Books through web or API access.
Pricing is structured around production Linked Accounts and progressively broader operational support. The free Launch option links three production Linked Accounts and includes basic functionality. The paid Launch plan costs $650 per month, includes 10 production Linked Accounts, and adds read and write access, Embedded Merge Link, and daily sync frequency. Professional adds custom fields, custom sync frequencies, 60-day access to developer sandboxes for third-party platforms, and email and chat support. Enterprise adds Audit Trail and other enterprise security features, unlimited sandbox access, a dedicated account manager with a shared Slack channel, plus support and uptime SLAs. Professional and Enterprise pricing is contract-based.
The product’s main strength is breadth within accounting integrations without requiring each connection to use a separate model. Merge Link supports end-user authorization and account-token access, while webhooks and polling support synchronization and changed-data events. SDKs are available for Node, Java, Python, Go, and Ruby, and test Linked Accounts and sandbox environments support development workflows. Merge is a strong fit for teams that need multi-platform accounting connectivity, two-way data access, and a defined developer toolkit. Teams needing only one accounting integration, or seeking lower-cost paid access, may prefer a narrower integration approach.
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Merge pricing
All 3 Merge plans and prices →
Merge fact sheet
| Free plan | Yes |
|---|---|
| Paid from | $650/unit/mo |
| Included connections | 10 connections |
| Invoice sync | Yes |
| Journal entries | Yes |
| Sync direction | Two_way |
| Webhooks | Yes |
| Sandbox environment | Yes |
| API authentication | Both |
| Deployment | Cloud |
| Platforms | Web |
| Compliance & security | SOC 2, ISO 27001, GDPR, HIPAA |
| Support | Email, Live chat, Docs |
| Built for | Small business, Mid-market, Enterprise (editorial estimate) |
| Integrations | 8 integrations: QuickBooks Online, Xero, NetSuite, Sage Intacct, FreshBooks, FreeAgent … See all → |
| Pricing | Free plan (source) |
| Website | merge.dev |
| Facts checked | 20 Sep 2026 |
Merge integrations
Merge lists 8 integrations on its own site.
- QuickBooks Online
- Xero
- NetSuite
- Sage Intacct
- FreshBooks
- FreeAgent
- Clear Books
- Zoho Books
Alternatives to Merge
- RutterA broad accounting API for bidirectional sync across 15 listed platforms.9.4
- ApideckA mature unified accounting API for teams connecting multiple finance systems.9.1
- Unified.to Accounting APIA paid API layer for standardized read/write accounting integrations.9.0
Merge vs the competition
- Merge vs Rutter
- Merge vs Apideck
- Merge vs Unified.to Accounting API
- Merge vs Codat
- Merge vs Validis
- Merge vs Xero Accounting API
Compare Merge with any tool side by side →
Also Ranked In
Merge is ranked in 4 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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