The UK has a mature SaaS ecosystem. Xero and Sage lead cloud accounting for SMBs, with QuickBooks and FreeAgent strong among freelancers and micro-businesses, while Sage 50 retains a large desktop installed base. Salesforce and HubSpot lead CRM.
12 supported accounting platforms + 18 on the radar
Where the major platforms sit and which Apideck supports today. Figures are company-reported unless marked as an estimate.
| Platform | United Kingdom market position | Apideck | Source |
|---|---|---|---|
| Xero | ~1.1M UK subscribers | Supported | Xero FY24 results |
| QuickBooks Online | ~270k UK users (est.) | Supported | AceCloud, 2026 (est.) |
| Sage Business Cloud Accounting | Within ~6.1M global customers | Supported | Sage FY24 results |
| FreeAgent | 200k+ UK customers | Supported | FreeAgent / NatWest |
| KashFlow, ClearBooks UK, FreshBooks, Zoho Books | Long-tail SME / freelance | Supported | — |
| NetSuite, Dynamics 365 BC, Sage Intacct | Mid-market / ERP | Supported | — |
| Sage 50 / Sage 200 | Large desktop / hybrid installed base | On the radar | — |
Subscriber and customer counts are the best available public indicators and may include accountant-managed multi-entity accounts; they are not a direct count of distinct businesses. Estimates are marked accordingly.
Connect to these United Kingdom accounting systems through one unified API
Xero
Sage Business Cloud Accounting
QuickBooks
FreeAgent
Kashflow
Clear Books
Exact Online UK
NetSuite
FreshBooks
Access Financials
Microsoft Dynamics 365 Business Central
MRI Software
Popular United Kingdom accounting software we are tracking. Some of these are upcoming, while others are not on our roadmap as of now.
Sage 50 UK
Dominant installed base for UK SMB accounting
Sage 200
Cloud-enabled mid-market accounting with REST API, strong UK presence
Sage Sole Trader
UK self-assessment and Making Tax Digital app
Sage X3
Full ERP for UK manufacturing and distribution
Operations for Sage Intacct
Operations and inventory layer for UK mid-market on Sage Intacct
Dext
Leading UK receipt capture and bookkeeping automation
AccountsIQ
Irish-origin mid-market cloud accounting, 4,000+ companies
IRIS
Dominant in UK accountancy practices for accounts production
Xledger
Cloud multi-entity accounting growing in UK mid-market
iplicit
Purpose-built for the UK and Ireland's mid-market, cloud accounting without ERP complexity
Light
AI-native multi-entity ERP for hypergrowth companies
Thred
Embedded accounting infrastructure for SME platforms
Finzu
AI-native UK SME ledger with real-time validation
Ember
AI-assisted accounting for UK limited company directors and sole traders
Pandle
Free UK cloud bookkeeping for small businesses
QuickFile
Free UK SME accounting platform
Brightbook
Free UK SME ledger for freelancers and small businesses
Epicor
Industry-focused ERP for UK manufacturing and distribution
Other United Kingdom business software you can integrate through Apideck
Integrate with 12+ United Kingdom accounting platforms through a single API. Free trial, no credit card required.