Best CT600 filing software in 2026: WeFile vs TinyTax, TaxPipe, TaxCalc & TaxFiler
There is no single "best" Corporation Tax filing product for every UK company or accountancy practice. This guide compares published prices, VAT treatment, and officially stated features for the main commercial CT600 suppliers, so you can match software to your own filing volume, client base, and whether you need Companies House accounts filed alongside HMRC. It covers both accountants and directors filing for their own company without an accountant: explore the director shortlist, selection criteria, WeFile vs TinyTax comparison, cheapest options, free options, filing checklist and savings estimator.
How this comparison was built
Every price, feature and VAT statement below is taken directly from each supplier's own published pricing page, terms, or official GOV.UK listing, checked on 16 September 2026. Where a supplier does not state something publicly (for example, VAT treatment), we say so explicitly rather than guessing.
We do not use star ratings, review scores, or claim independent testing. This page is published by WeFile, one of the suppliers compared, and is written to help buyers understand real published differences — not to present WeFile as universally superior. Where a competitor is a better fit for a specific use case, we say so in the decision section below.
Top CT600 and Companies House filing tools for UK directors filing without an accountant in 2026
This shortlist is for a director filing for their own single company. It is ordered by how much of the combined CT600 and Companies House accounts job each tool covers in one product according to its own published scope, then published price for one company — not by a quality score. WeFile publishes this page and is one of the tools listed.
WeFile
Best for: CT600 and Companies House accounts from one set of figures, paid per filing
Pay per filing: trading company …, dormant company …. Confirm VAT treatment at checkout. No subscription needed for a single company. CT600 v3 and Companies House iXBRL accounts are handled in one guided workflow, with each submission tracked separately. Corporation tax is calculated automatically, including marginal relief. CT600A and CT600E are supported; CT600B–D and F–P are not supported.
View WeFileTinyTax
Best for: lowest published annual price for a single company
Solo £59/year; Dormant £20/year. Prices exclude VAT, which is added at checkout. Covers CT600 filing to HMRC and Companies House iXBRL accounts, with a micro-entity focus.
View TinyTax pricing (opens in a new tab)IRIS Elements (Taxfiler's successor)
Best for: directors who also want bookkeeping and Self Assessment in one subscription
Tax & Accounts Startup £12/month (£142/year); includes Accounts and Corporation Tax. VAT treatment is not stated on the reviewed page.
View IRIS Elements (Taxfiler's successor) pricing (opens in a new tab)TaxPipe
Best for: a one-off CT600 only
£59 per CT600 return, with no subscription. VAT treatment is not stated. TaxPipe explicitly does not file accounts with Companies House, so a separate Companies House route is needed.
View TaxPipe pricing (opens in a new tab)TaxCalc
Better suited to: accountancy practices rather than a single director
Corporation Tax and Accounts Production are licensed separately. The lowest published combined 12-client total is £399/year, excluding VAT.
View TaxCalc pricing (opens in a new tab)
Feature matrix for a single-company director
| Tool | CT600 to HMRC | Companies House accounts | Both in one product | Pricing model for one company | VAT on published price |
|---|---|---|---|---|---|
| WeFile | Yes | Yes | Yes | Per filing | Confirm at checkout |
| TinyTax | Yes | Yes | Yes | Annual plan | Excludes VAT |
| IRIS Elements | Yes | Yes | Yes | Monthly subscription | Not stated |
| TaxPipe | Yes | No | No | Per return | Not stated |
| TaxCalc | Yes | Yes (Accounts Production) | Separate products | Annual, per client-tier | Excludes VAT |
Best CT600 software for UK limited companies in 2026: compared
The main CT600 software options for UK limited companies in 2026 are WeFile, TinyTax, IRIS Elements (Taxfiler's successor), TaxPipe and TaxCalc. They differ mainly in whether Companies House accounts are included, their pricing model (per filing, annual or monthly), and VAT treatment. These facts were checked 16 September 2026.
Prices and features are as published by each supplier. Currency figures are GBP unless stated otherwise.
| Product | Published price | VAT position | Officially stated scope | Source |
|---|---|---|---|---|
| WeFile | Accountant membership: …/year (up to 100 filings). Pay-per-filing: trading company …, dormant company …. | Not itemised here — confirm VAT treatment at checkout. | CT600 (version 3) and Companies House iXBRL accounts submitted together; automatic marginal relief and capital allowances; CT600A and CT600E supplementary pages supported. CT600B–D and CT600F–P are not supported. Charity/CASC and non-Companies-House entity filings are CT600-only. | wefile.co.uk/ct600-software |
| TinyTax | Dormant £20/year; Solo £59/year; Portfolio tiers from £99/year (3 clients) up to £999/year (1,000 clients). | Excludes VAT — TinyTax states VAT is added at checkout. | CT600 filing to HMRC; Companies House iXBRL accounts filing; automatic tax computations and period splitting; prior-year data; support for UK private limited companies filing as micro-entities, plus certain CICs, charities and CASCs subject to limitations. | tinytax.co.uk/pricing |
| TaxPipe | £59 per CT600 return — no subscription. | Not stated on the reviewed pricing page — VAT treatment is unknown. | CT600 generation, tax computation, micro-entity iXBRL accounts, direct HMRC submission, rejection fixes and a guided workflow. Explicitly does not file annual accounts or confirmation statements with Companies House. | taxpipe.co.uk/pricing |
| TaxCalc (CT + Accounts Production) | Corporation Tax (12 clients) £235/year + Accounts Production (12 clients) £164/year = £399/year combined, the lowest published 12-client total. Both products scale separately at higher client-count tiers. | Excludes VAT for business/non-consumer products. | Tax Return Production prepares and files CT600 returns with HMRC integration, validation and iXBRL computations. Accounts Production files statutory accounts directly with Companies House, with automatic iXBRL tagging and imports from Xero, QuickBooks and FreeAgent. The two products are priced and licensed separately. | taxcalc.com/pricing |
| Taxfiler → IRIS Elements | IRIS Elements Tax & Accounts: Startup £12/month (£142/year); Solo £26/month (£279/year); Pro £39/month (£418/year); Team £254/month (£2,739/year). | Not stated on the reviewed migration page — VAT treatment is unknown. | IRIS directs Taxfiler customers to IRIS Elements (Accounts, Corporation Tax, Self-Assessment, MTD VAT, bookkeeping integrations, automated migration). IRIS's own pages give contradictory Taxfiler end-of-life dates (March 2025, end of April 2025, access until July 2025, and "no current end of life date") — Taxfiler is not treated here as a normal current product. | iris.co.uk/l/taxfiler-to-elements |
Official sources
- GOV.UK: Corporation Tax commercial software suppliers
- GOV.UK: Find software for filing company accounts
- TinyTax pricing
- TaxPipe pricing
- TaxCalc pricing
- IRIS: Taxfiler to Elements migration
Inclusion on the GOV.UK supplier lists reflects evidence a supplier has provided that its software can produce one or more elements of a Company Tax Return, or unaudited small company accounts. It is not an endorsement, accreditation, approval or certification by HMRC or Companies House, and neither body recommends one product over another.
Cheapest CT600 software in 2026: published prices compared
Based on published prices checked 7 October 2026, Tax Optimiser had the lowest entry price at £10 + VAT per company per year, including Companies House filing. WeFile is not the cheapest; it charges a one-off, live-priced per-filing fee. The cheapest suitable option depends on whether you need Companies House filing, supplementary pages and support for your accounts type.
| Supplier | Published price | VAT | Companies House accounts filing | Price basis |
|---|---|---|---|---|
| WeFile | + VAT (UK standard rate added at checkout for UK billing addresses) | Yes, for supported account types; charity/CASC filings are CT600-only. | Per filing; no subscription required | |
| Tax Optimiser | £10 per company/year; its help page describes the fee as per accounting period | Excludes VAT | Yes, included | Per company per year |
| Taxley | £49.95 per micro-company return | No VAT to add | Yes, included | Per return |
| TinyTax | £59/year for one trading company | Excludes VAT | Yes, included in the plan | Annual plan |
| Andica CT600 Cloud | From £70/year | Excludes VAT | No — submits to HMRC, not Companies House | Annual |
| CT600Filing | £79 per accounting period for a micro company | + VAT (£94.80 including VAT) | Yes, included | Per accounting period |
| #GoFile | £79.99 per filing | + VAT | Not stated as included; its CT600 page describes HMRC submission | Per filing |
| Easy Digital Filing | £119 per filing with micro iXBRL accounts | + VAT | Optional add-on: £20 + VAT | Per filing |
These prices are not perfectly like-for-like: some are per filing, others are annual or per accounting period, and package scope differs. Prices may have changed since 7 October 2026. Check the supplier’s current terms before buying.
What affects CT600 filing cost?
VAT-inclusive or VAT-exclusive?
Compare the amount you will actually pay. A price marked “+ VAT” is not the checkout total; Taxley states that there is no VAT to add. Check each supplier’s current VAT treatment before buying.
Per filing or an annual plan?
A single return and several companies or accounting periods produce different totals under each model. A statutory period of account longer than 12 months can require two CT600 returns, even where the accounts cover one longer period.
Is Companies House filing included?
Submitting iXBRL accounts to HMRC is not the same as filing statutory accounts with Companies House. Some suppliers include that second submission, some sell it as an add-on, and others do not state that it is included.
Which accounts presentation do you need?
Check support for your actual accounts type: dormant, micro-entity FRS 105, small-company FRS 102 Section 1A or full FRS 102. A low advertised price for a micro return may not apply to another accounts type.
Are your supplementary pages supported?
Confirm the pages your company needs before comparing prices. WeFile supports CT600A and CT600E, but not CT600B–D or CT600F–P. Charity and CASC filings through WeFile are CT600-only.
What happens if you amend?
Check the supplier’s current amendment scope and charges, including whether revised Companies House accounts can be filed when needed. Do not assume an advertised original-return price covers an amendment.
Self-file or appoint an accountant?
If you can prepare and review accurate figures, software may suit you. More complex circumstances may call for professional advice. Ask an accountant for a quote rather than relying on an unsourced market-average fee.
How to work out the true cost
Run these checks against your own filing needs before choosing the lowest advertised price.
- Add VAT to prices that exclude it.
- Add any Companies House accounts filing charge.
- Calculate the total for your companies and CT600 accounting periods.
- Confirm your accounts type and required supplementary pages are supported.
- Check whether the trial-balance import you need is available.
Is there free CT600 filing software in 2026?
HMRC’s former free online filing service closed on 31 March 2026. There is no longer a free HMRC route for filing Company Tax Returns online; normal online returns generally require commercial software. Paper CT600 filing is accepted only in narrow circumstances, including a reasonable excuse for not filing online or filing in Welsh.
Some software suppliers may offer trials — check their terms and whether a trial includes submission. WeFile charges per CT600 filing. MTD VAT returns and SA100 Self Assessment filing are free on WeFile, but CT600 filing is not free.
Read about what closed on 31 March 2026, explore switching from HMRC's closed free filing service, or see the guide to filing without an accountant.
This comparison is general information, not accounting, tax or legal advice. Check current supplier prices and filing coverage before buying; you remain responsible for your return.
How to choose CT600 software: key factors for 2026
Choose CT600 software by checking whether it files both the Company Tax Return and Companies House accounts, supports your FRS 105 or FRS 102 accounts standard, and covers the supplementary pages you need. Compare pricing models and VAT treatment, bookkeeping imports, and the number of companies you file for before deciding.
Filing coverage
Check whether the product handles the CT600 Version 3 return and Companies House accounts, and whether it tracks the two submissions separately.
Question to ask: Can I file the CT600 and Companies House accounts in one product?
Accounts standard
Your company’s accounts type determines which preparation and filing features you need.
Question to ask: Does it support only micro-entity FRS 105, or also FRS 102 Section 1A and full FRS 102?
Tax computation
Look beyond the headline tax rate if your return includes adjustments or carried-forward losses.
Question to ask: Does it calculate marginal relief, associated-company limits, capital allowance pools, losses and the Part 7ZA restriction?
Supplementary pages
Confirm the specific pages your return requires before entering figures.
Question to ask: Does it support CT600A for directors’ loans and s455 tax, CT600E for charities, or any other pages I need?
Pricing model and total cost
Compare the cost of completing your actual filing workload, not just a headline price.
Question to ask: Is pricing per filing, annual or monthly; is VAT added; and are both filings included?
Data import
Check whether your existing bookkeeping figures can be brought into the workflow.
Question to ask: Can I import from Xero, QuickBooks Online, FreeAgent or a CSV trial balance?
Volume and support
A director filing for one company and a practice managing many companies may need different workflows.
Question to ask: Does it suit my number of companies, provide client management and support amendments?
HMRC-recognised CT600 software: what recognition means and why it matters
“HMRC-recognised” CT600 software normally means a product appears on HMRC’s published Corporation Tax commercial software suppliers list. That is evidence the supplier has shown it can produce one or more elements of a Company Tax Return and submit through HMRC’s online channel. It is not accreditation, endorsement or a recommendation; HMRC does not recommend one product over another.
What the list tells you
- Whether the supplier supports submission through HMRC’s online channel.
- Which return elements it lists, such as the CT600, tax computations and accounts in iXBRL.
What it does not tell you
- Price, ease of use or accuracy for your circumstances.
- Whether the supplementary pages you need are supported.
- Whether Companies House accounts filing is included; Companies House maintains a separate software list.
Why check before paying?
HMRC’s free joint accounts and Company Tax Return filing service closed on 31 March 2026. For an online CT600 submission, check the supplier’s current listing and the return elements you need before paying for commercial software.
WeFile appears on HMRC’s Corporation Tax commercial software suppliers list (opens in a new tab) and on Companies House’s list of software for filing unaudited small company accounts (opens in a new tab). These listings describe filing capability, not a recommendation.
WeFile vs TinyTax: which CT600 software is right for you?
WeFile and TinyTax both file CT600 returns to HMRC and iXBRL accounts to Companies House. TinyTax publishes annual plans focused on micro-entities: Solo costs £59 a year and Dormant £20 a year, excluding VAT. WeFile charges per filing, with trading filings at loading and dormant filings at loading, and also supports FRS 102 accounts, CT600A and CT600E.
| Feature | WeFile | TinyTax |
|---|---|---|
| Pricing model | Pay per filing, no subscription: trading loading; dormant loading | Annual plan: Solo £59/year; Dormant £20/year |
| Practice pricing | Accountant membership loading/year, up to 100 filings | Portfolio from £99/year for 3 clients to £999/year for 1,000 clients |
| VAT on published price | Confirm at checkout | Excludes VAT; added at checkout |
| CT600 to HMRC | Yes | Yes |
| Companies House iXBRL accounts | Yes | Yes |
| Accounts standards | FRS 105 micro-entity, FRS 102 Section 1A small and full FRS 102 | Focus on UK private limited companies filing as micro-entities |
| Charities and CASCs | CT600E supported; CT600-only filing | Certain CICs, charities and CASCs, subject to limitations |
| Directors’ loans and s455 | CT600A supported | Check with supplier; not stated on the reviewed pricing page |
| Period splitting | Long periods split into two returns | Automatic period splitting |
| Trial balance import | Xero, QuickBooks Online, FreeAgent and CSV | Check with supplier |
TinyTax may suit you if…
- You file each year for one micro-entity and prefer its published Solo annual-plan price.
- You are comfortable buying an annual plan and adding VAT to the listed price.
WeFile may suit you if…
- You would rather pay only when you file or prepare FRS 102 accounts.
- You need CT600A for a director’s loan or CT600E for a charity or CASC.
- You want to import a trial balance from Xero, QuickBooks Online or FreeAgent.
TinyTax facts come from TinyTax’s pricing page (opens in a new tab), checked 16 September 2026. Confirm current terms directly with each supplier. WeFile publishes this comparison.
CT600 filing checklist for UK limited companies (2025–26 tax year)
Before filing a UK limited company’s 2025–26 CT600, gather its Corporation Tax credentials, accounting dates, prior-year comparatives and current financial figures. Check that the balance sheet balances, identify tax adjustments and any supplementary pages, then review the accounts and tax computation. Record the separate payment, return and Companies House deadlines, and retain submission receipts.
Your preparation progress
0 of 22 ready
For a fuller walkthrough, read the CT600 filing guide. This checklist is general information, not professional tax or accounting advice; requirements depend on your company’s circumstances.
HMRC's free filing service closed on 31 March 2026
HMRC's free "File your accounts and Company Tax Return" online service — often referred to as CATO — closed on 31 March 2026. From 1 April 2026, companies must use commercial software to file Company Tax Returns, and should check that their chosen software supports the CT600, the Corporation Tax computation, and company accounts filing.
This is the main reason many companies and accountants are now evaluating commercial CT600 software for the first time. If you're switching from HMRC's closed free filing service, see our guide to switching from HMRC's closed free filing service. For the authoritative detail, see GOV.UK's official closure guidance .
If you're weighing up whether to self-file at all, our step-by-step guide to filing your CT600 and Companies House accounts without an accountant in 2026 walks through the combined filing steps, iXBRL, deadlines, and how to judge whether self-filing suits your company.
How much could you save compared with your accountant's quote?
We deliberately don't quote a “typical” accountant fee. Fees vary widely and often include bookkeeping, advice and other services. Enter your own quote to compare filing fees.
Compare your quote
WeFile price excludes any VAT shown at checkout. This compares filing fees only — it does not account for your own time, bookkeeping, or professional advice an accountant may include.
What's checked before anything is submitted
These checks help you review a filing; they are not a guarantee.
- Your profit and loss and balance sheet must reconcile before you can continue.
- Corporation tax is calculated automatically, including marginal relief and associated companies.
- The CT600 and accounts are generated from one set of figures so they agree.
- A consistency check runs on the submission payload before it is sent.
- HMRC and Companies House responses — including acceptances and rejections with error messages — are shown on the filing, so errors can be corrected and resubmitted.
Who should use WeFile?
WeFile is a strong fit for some filers and not the right tool for others. Here's how to decide, fairly.
Choose WeFile if…
- You're an accountant filing CT600s for multiple clients and want one membership covering up to 100 filings in a 12-month period, with client management built in.
- You want the CT600 (version 3) and Companies House iXBRL statutory accounts submitted together from one set of figures, rather than running two separate products.
- Your filing needs include CT600A (loans to participators / s455) or CT600E (charities and CASCs) supplementary pages.
- You'd rather use a guided, modern wizard than legacy desktop tax software.
Fair alternatives to consider
- TaxPipe — if you only need a one-off CT600 without filing accounts to Companies House. It explicitly does not cover the Companies House leg, and its VAT treatment is not published.
- TinyTax — if price-per-filing at very high volumes matters most to you; its entry tiers are lower, but remember all its published prices exclude VAT.
- TaxCalc — if you run an established desktop-based practice and want separately licensed Tax Return Production and Accounts Production modules across a larger client bank; combined 12-client pricing starts at £399/year, excluding VAT.
- IRIS Elements — if you're already a Taxfiler customer being migrated by IRIS. Confirm current pricing and VAT treatment directly, given IRIS's own pages contain contradictory end-of-life dates for Taxfiler.
WeFile accountant membership, in plain terms
…/year covers up to 100 filings within a rolling 12-month period. Hitting the 100th filing expires the membership early; you can re-subscribe at any time by paying again. It includes client management and direct submission to HMRC and, where applicable, Companies House.
Scope: CT600A and CT600E supplementary pages are supported; CT600B–D and CT600F–P are not. Charity/CASC filings and entities without a Companies House number are CT600-only — the Companies House accounts leg is not available for these.