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SPECIFICTION
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Filabl vs OpenTax

Filabl

filabl.co.uk

OpenTax

opentax.evokelab.ai

Side by side

FigureFilablOpenTax
Price from£19/moFree
Free planYesYes
Free trial——
Open source—Yes
WebYesYes
API—Yes
Self-hosted—Yes
Plans published31
Spec score · AI Tax Software8.2 (#9)8.5 (#7)
PrivacyThe maker says data is hosted in the EU London region, is not sold, and is not used to train AI without consent.The privacy policy says OpenTax does not collect or transmit personal or tax data, and stores return data in the user's browser IndexedDB.
SupportThe About page says the team aims to reply to enquiries within one business day; Growth includes priority support.The Trust Center directs users to report tax-accuracy issues through a GitHub issue.

Plans

Filabl

  • BasicFree
  • Starter£19 a month
  • Growth£49 a month

Filabl pricing →

OpenTax

  • Free foreverFree

OpenTax pricing →

In their own words

Filabl

Filabl is web-based UK tax and accounting software for small businesses. It combines bookkeeping tools with an AI accountant powered by Anthropic Claude, available 24/7 on every plan and using financial data with UK tax rules. The service is designed to file VAT, Corporation Tax, Self Assessment, and Payroll RTI directly to HMRC. It connects to more than 40 UK banks through FCA-authorised Stripe Financial Connections. AI categorisation assigns transactions to UK tax categories, reports up to 97% accuracy, and flags anomalies. Receipt scanning accepts photos or forwarded emails, extracts supplier, amount, VAT, and category, then matches receipts to transactions. Free Basic includes invoicing, bills, quotes, contacts, fixed assets, expense tracking, and basic profit-and-loss reports. Starter costs £19 a month; Growth costs £49 a month, with VAT added at checkout.

Visit filabl.co.uk

OpenTax

OpenTax has no write-up on Specifiction yet; its figures are above.

Visit opentax.evokelab.ai