Best Billy API Alternatives in 2026
The top Billy API alternatives are Rutter, Merge and Apideck: 15 accounting APIs our editors would look at instead of Billy API, in our ranking order.
Billy API: A low-cost REST API for invoices, ledger data and accounting workflows in Billy. Where it falls short: focused on billy rather than a broad accounting ecosystem.
Switching from Billy API? For most accounting apis buyers the best Billy API alternative is Rutter, built for broad multi-platform accounting integrations. On a budget, Zoho Books starts at $15/mo. Merge has a free plan. Xero Accounting API offers the most included connections (50 connections).
Why People Look for a Billy API Alternative
- Focused on Billy rather than a broad accounting ecosystem
- Unlimited integrations begin with the Plus plan
- Phone and priority accounting support are limited to higher tiers
Quick Picks by What You Need
- Best overallRutter9.4
Broad multi-platform accounting integrations
Visit Rutter - Lowest priceZoho Books7.8
Paid plans from $15/mo
Visit Zoho Books - Best free optionMerge9.3
Has a free plan
Visit Merge - Most included connectionsXero Accounting API8.5
50 connections
Visit Xero Accounting API
All 15 Billy API Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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Best forBroad multi-platform accounting integrations
- Better than Billy API:
- Editor score 9.4 vs 7.0
A broad accounting API for bidirectional sync across 15 listed platforms.
- Webhooks
- Sandbox environment
- Invoice sync
9.4/10★★★★★Visit Rutter -
Best forDevelopers needing standardized accounting models
- Better than Billy API:
- Editor score 9.3 vs 7.0
A developer-focused accounting API with normalized models, two-way sync, and sandbox support.
- Webhooks
- Sandbox environment
- Invoice sync
9.3/10★★★★★Visit Merge -
Best forMature multi-system API infrastructure
- Better than Billy API:
- Editor score 9.1 vs 7.0
A mature unified accounting API for teams connecting multiple finance systems.
- Webhooks
- Sandbox environment
- Invoice sync
9.1/10★★★★★Visit Apideck -
Best forEnterprise normalized accounting connectivity
- Better than Billy API:
- Editor score 9.0 vs 7.0
A paid API layer for standardized read/write accounting integrations.
- Webhooks
- Sandbox environment
- Invoice sync
9.0/10★★★★☆Visit Unified.to -
Best forReal-time bank-feed and financial-data sync
- Better than Billy API:
- Editor score 8.7 vs 7.0
A focused choice for near-real-time bank feeds and standardized financial data.
8.7/10★★★★☆Visit Codat -
Best forFinancial-data extraction and standardization
- Better than Billy API:
- Editor score 8.6 vs 7.0
A strong choice for extracting and standardizing financial data across accounting systems.
- Webhooks
- Journal entries
8.6/10★★★★☆Visit Validis -
Best forXero-specific production integrations
- Better than Billy API:
- Editor score 8.5 vs 7.0
A focused API for production integrations built around Xero accounting data.
- Webhooks
- Sandbox environment
- Invoice sync
8.5/10★★★★☆Visit Xero -
Best forQuickBooks Online developers
- Better than Billy API:
- Editor score 8.4 vs 7.0
A focused accounting API for syncing QuickBooks Online data with connected applications.
- Webhooks
- Sandbox environment
- Invoice sync
8.4/10★★★★☆Visit QuickBooks -
Best forEnterprise Sage Intacct automation
- Better than Billy API:
- Editor score 8.3 vs 7.0
A capable Sage Intacct integration layer for enterprise accounting automation.
- Sandbox environment
- Invoice sync
- Journal entries
8.3/10★★★★☆Visit Sage Intacct -
Best forCustomizable multi-provider accounting APIs
- Better than Billy API:
- Editor score 8.2 vs 7.0
A customizable accounting API for building multi-provider financial integrations.
- Webhooks
- Sandbox environment
- Invoice sync
8.2/10★★★★☆Visit Truto -
Best forQuickBooks Desktop and Enterprise connectivity
- Better than Billy API:
- Editor score 8.1 vs 7.0
A focused API for embedding QuickBooks Desktop connectivity in software products.
- Sandbox environment
- Invoice sync
- Journal entries
8.1/10★★★★☆Visit Conductor -
Best forAffordable full-featured accounting API access
- Better than Billy API:
- Editor score 8.0 vs 7.0
Affordable accounting API access with broad resources, webhooks, and sandbox administrations.
- Webhooks
- Sandbox environment
- Invoice sync
8.0/10★★★★☆Visit Moneybird -
Best forAffordable Holded-based accounting integrations
- Better than Billy API:
- Editor score 7.9 vs 7.0
A paid Holded integration API with invoicing, accounting, inventory, and webhook access.
- Webhooks
- Invoice sync
- Journal entries
7.9/10★★★★☆Visit Holded API -
Best forSmall businesses needing accounting plus an API
- Better than Billy API:
- Editor score 7.8 vs 7.0
Accounting, automation, and API access for small businesses that need room to grow.
7.8/10★★★★☆Visit Zoho Books -
Best forCloud ERP and accounting integrations
- Better than Billy API:
- Editor score 7.7 vs 7.0
A broad cloud business suite for accounting and industry workflows, with API/web-service connectivity.
7.7/10★★★★☆Visit Exact Online
Billy API Alternatives: Common Questions
What is the best alternative to Billy API?
Rutter: #1 in our Accounting APIs ranking, with an editor score of 9.4 out of 10. A broad accounting API for bidirectional sync across 15 listed platforms.
Is there a free alternative to Billy API?
Yes. Merge, Xero Accounting API, QuickBooks Online Accounting API and Zoho Books have a free plan or a free tier.
What is the cheapest paid alternative to Billy API?
Of the alternatives here that publish a price, Zoho Books starts lowest, at $15/mo.
Why do people look for Billy API alternatives?
Focused on Billy rather than a broad accounting ecosystem; Unlimited integrations begin with the Plus plan; Phone and priority accounting support are limited to higher tiers.
Which Billy API alternative has the most included connections?
Xero Accounting API, with 50 connections.
How do I switch from Billy API?
Export your data from Billy API (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel Billy API.
How to Switch from Billy API
- Export your data from Billy API (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel Billy API.
Billy API vs Each Alternative
| # | Tool | Free plan | Paid from | Invoice sync | Journal entries | Sync direction | Score |
|---|---|---|---|---|---|---|---|
| 22 | Billy API | Yes | 160 DKK/mo | Yes | Yes | Two_way | 7.0 |
| 1 | Rutter | No | Yes | Yes | Two_way | 9.4 | |
| 2 | Merge | Yes | $650/unit/mo | Yes | Yes | Two_way | 9.3 |
| 3 | Apideck | No | $6,469/yr | Yes | Yes | Two_way | 9.1 |
| 4 | Unified.to Accounting API | No | $750/mo | Yes | Yes | Two_way | 9.0 |
| 5 | Codat | 8.7 | |||||
| 6 | Validis | Yes | Two_way | 8.6 | |||
| 7 | Xero Accounting API | Yes | Yes | Yes | Two_way | 8.5 | |
| 8 | QuickBooks Online Accounting API | Yes | Yes | Yes | Two_way | 8.4 | |
| 9 | Sage Intacct API | Yes | Yes | Two_way | 8.3 | ||
| 10 | Truto Accounting API | No | $999/unit/yr | Yes | Yes | Two_way | 8.2 |
| 11 | Conductor QuickBooks Desktop API | No | $49/unit/mo | Yes | Yes | Two_way | 8.1 |
| 12 | Moneybird API | No | €3/mo | Yes | Yes | Two_way | 8.0 |
| 13 | Holded API | No | €15/mo | Yes | Yes | Two_way | 7.9 |
| 14 | Zoho Books | Yes | $15/mo | 7.8 | |||
| 15 | Exact Online | No | 7.7 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update