A4O Accounts vs TaxCalc
TaxCalc is an established tax and accounts suite for practices, with a Limited Company edition for businesses filing their own CT600. A4O Accounts keeps the books and builds the accounts and return from them. They suit different jobs.
Information checked: 1 October 2026, against TaxCalc’s own website. Products and prices change, so check their site before you decide. Tell us if something here is out of date.
Side by side
| Capability | A4O Accounts | TaxCalc |
|---|---|---|
| Where the figures come from | The books you keep in A4O Accounts | Entered into the return, or imported from TaxCalc Accounts Production source |
| Bookkeeping | Included, with bank statement import | Not stated |
| Statutory accounts | Built from the books: micro-entity, small, full, audited and dormant | A separate product, Accounts Production. The Limited Company product attaches accounts made there or in another package source |
| CT600 and tax computation | Yes, with the computation in iXBRL | Yes, with computations in iXBRL source |
| Supplementary pages | CT600A and CT600L only | All supplementary pages source |
| Filing the CT600 with HMRC | Yes | Yes source |
| Filing accounts with Companies House | Yes, with confirmation statements and company changes | Not stated on the Corporation Tax pages |
| How it runs | In a web browser | Installed on Windows, Mac or Linux. Cloud access is an add-on, CloudConnect source |
| Several clients | Yes, under one login. No practice-wide deadline view or bulk actions yet | Yes, priced in bands from 12 to 1,000+ clients source |
| Price | £0 to get started | Limited Company from £142 a year. For practices, Corporation Tax from £235 a year for 12 clients and Accounts Production from £164, excluding VAT source |
| Trying it | Free to get started; test submissions before filing | 14-day free trial of the practice products source |
“Not stated” means we couldn’t find it on the pages we checked. It doesn’t mean the product can’t do it. A4O Accounts is free to get started, including filing; if we ever introduce paid plans, we’ll tell you at least 30 days before anything changes.
Which suits you
TaxCalc is suited to
- Practices that need every CT600 supplementary page, including group relief and overseas pages
- Firms that already use a desktop suite and want accounts production and tax as separate modules
- Companies whose accounts are already prepared and only need the return
A4O Accounts is suited to
- Companies and small practices that want the books, accounts and CT600 in one place
- Returns that need no supplementary page, or only CT600A or CT600L
- Anyone who wants to work in a browser with nothing to install
Sources
Everything about TaxCalc above was taken from these pages on 1 October 2026.
TaxCalc — Limited Company tax software
TaxCalc — Tax Return Production for accountants
TaxCalc — Pricing
Read next
See how A4O Accounts handles your return.
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