One integration layer for QuickBooks, Xero, NetSuite, and 50+ accounting systems — so your team ships product features, not bespoke connectors.
If you’ve ever connected your business to more than one accounting tool, you know how frustrating it gets. QuickBooks calls something one thing. Xero calls it something else.
Freshbooks has its own name for it. Zoho does too. It’s the same information, just described four different ways by four different companies.
And that’s just one example. This happens across dozens of fields.
Every time you add a new accounting platform, it becomes a whole new headache.
More time, more effort, more things that can go wrong. And the more platforms you support, the more time you spend just trying to make them talk to each other, instead of actually getting things done.
The Unified Accounting API changes that. Rather than forcing you to learn the quirks of every platform you use, it speaks all of them for you quietly, in the background.
You just connect your tools and get on with your work.
Here’s a straightforward comparison of what integration life looks like with and without a unified layer:
We currently support six of the most widely used accounting platforms from simple tools that freelancers love, all the way up to the more powerful systems that growing businesses rely on.
Each platform connects through its own dedicated channel, which handles everything behind the scenes logging in on your behalf, making sure your data is read correctly, and presenting it back to you in a consistent, easy-to-understand format.
You don’t need to know how any of that works. You just connect your accounting tool, and everything lines up automatically.
Need MS Dynamics Business Central, Sage Intacct, or SAP? Those are available too, just on one of our extended plans.
Think of it as a universal translator that sits between your business and your accounting tools.
You ask for something once, and it figures out how to get that information from whichever platform you’re connected to then brings it back to you in a format that always looks the same, no matter where it came from.
Here’s what happens when you make a request:
↓ Request received at Unified API layer
↓ Response normalized back to unified schema
The part that makes this powerful is that each accounting platform has its own dedicated connection.
All the complicated, platform-specific stuff lives there completely out of sight. When we add support for a new platform, nothing on your end needs to change.
Two ways data gets delivered:
Your chart of accounts is essentially the backbone of your finances. It’s the master list of every category your business uses to record money coming in, going out, and everything in between.
Get this right, and everything else your invoices, transactions, journal entries falls into place naturally, because they all refer back to it.
When you request account information through our API, you always get it back in the same format, with the same field names regardless of which accounting platform it actually came from.
We handle the translation so you don’t have to think about it.
The table below shows exactly how each platform names these fields behind the scenes.
You’ll always see our unified field names in your responses this is just so you understand what’s happening under the hood.
A couple of things to keep in mind before you dive in:
Note on Xero’s isActive field: Xero’s Status field has three possible values: Active, Archive, and Deleted.
The unified isActive field maps to true only when Status equals ‘Active’. Archive and Deleted accounts are returned as isActive: false.
Not every accounting platform tracks the same information and that’s okay.
The table below gives you a clear picture of which fields are available on each platform, so you can make smart decisions about what to show your users and what to filter on.
If a field is ticked for a platform, you can count on it being there.
If it’s not, it’s worth having a fallback in mind or simply not surfacing that field for users on that platform.
Here’s what a real response looks like when you pull an account. Two things are worth noticing straight away.
GET /api/v1/accounts/{accountId} → 200 OK { "accountId": "acc_7f3a2b14-9c8d-4e1f", "accountCode": "1200", "accountName": "Trade Debtors / Accounts Receivable", "accountType": "CURRENT_ASSET", "accountSubType": "AccountsReceivable", "classification": "ASSET", "description": "Money owed to the business by customers", "currency": "USD", "isActive": true, "isBankAccount": false, "isSubAccount": false, "currentBalance": 48230.00, "parentRef": null, "modifiedDate": "2025-04-12T08:33:17Z", "_meta": { "platform": "xero", "rawId": "bd9f2c1a-4518-4c3e-8b72-f190e4a6c3d1", "syncedAt": "2025-04-12T08:40:02Z" } }
First, every field name is consistent – it doesn’t matter whether the data came from Xero, QuickBooks, or anywhere else. You always get the same structure back.
Second, see that _meta block at the bottom? That’s where we keep a few handy extras which platform the data came from, the platform’s own internal ID for this record, and the last time we synced it.
Useful when something looks off and you need to trace it back to the source.
One thing worth calling out specifically the _meta.rawId field. If you ever want to send a user directly to a record inside their own accounting platform, that’s the ID you use.
You can build a direct link to a Xero invoice, a QuickBooks account, or anything else without ever having to store platform-specific IDs in your own database.
All endpoints are relative to the base URL: https://api.synctools.io/accounting/v1
https://api.synctools.io/accounting/v1
These query parameters work across all list endpoints:
All errors follow a consistent structure regardless of which platform connector generated them.
This means you can write one error handling layer for your entire integration.
SaaS platforms adding accounting connectivity to close enterprise deals. Fintech apps syncing invoices, payments, and customers to a client's books of record. Product teams that lost a quarter to "Do you integrate with QuickBooks?"
Unified REST API with normalized objects across platforms. OAuth 2.0 connection flows for QuickBooks Online, Xero, and NetSuite. Webhooks and scheduled sync for invoices, bills, payments, customers, and chart-of-accounts data. Production-tested error handling, rate-limit management, and retry logic.