6 Best Corporation Tax Software Options to Consider in 2026

Corporation Tax software prepares your CT600 and files it with HMRC – but some tools go beyond, automating your bookkeeping and tracking your position all year.

HMRC closed its free Company Accounts and Tax Online service on 31 March 2026, and every limited company now has to file its CT600 using commercial software.

To help you make the right choice, we’ve gathered the six best Corporation Tax software options in 2026.

Key points

• Decide how much automation you need ⚙️
  Some tools only help you file your CT600, while others offer an array of time-saving features, spanning bookkeeping, tax calculations, and filing.
• Low-cost filing tools work well for simple companies 💷
  Options such as Taxpipe and TinyTax can suit straightforward micro entities or directors who already have their accounts prepared and only need to file a CT600.
• Full accounting platforms can reduce year-end admin 📊
  Software such as FreeAgent and Xero can automate bookkeeping and provide the figures needed for Corporation Tax, but you may still need a separate filing solution or accountant to file.
• ANNA combines cash management, bookkeeping, and Corporation Tax 🚀
  ANNA automatically categorises transactions, tracks your Corporation Tax position, and prepares your CT600 and Annual Accounts, reducing manual admin and helping you stay prepared for your filing deadline.

Best Corporation Tax software at a glance

How we chose these tools

We looked at much more than the feature lists and headline prices. Before selecting the top six, we evaluated over 20 tools using the following weighted system:

• HMRC recognition and filing scope (30%): We checked against HMRC’s published list of Corporation Tax software suppliers on gov.uk, plus the accounts the tools can file.
• Automation depth (25%): We considered how much of the year-end the tool handles for you, from transaction categorisation to CT600 preparation.
• True annual cost for one company (20%): We calculated this from each tool’s own pricing page and included VAT and add-on fees, not just the advertised figure.
• Suitability by company type (15%): We looked at how each tool handles the awkward cases, such as dormant companies, first periods over 12 months, and director’s loans on the CT600A.
• Feedback from self-filers (10%): We checked verified reviews on platforms like Trustpilot and G2, and Corporation Tax threads on AccountingWEB.

The best Corporation Tax software (2026)

The tools below cover everything from full banking and bookkeeping platforms to lean, single-purpose filing tools:

1. ANNA

ANNA is best for directors who’d rather not think about Corporation Tax until it’s time to press send. Built for micro-entities, it combines a business account, bookkeeping, and tax filing into one automated system.

Its Auto Accountant runs in the background throughout the year, categorising transactions and tracking your tax position, so your CT600 and Annual Accounts are ready to review and send when your year-end arrives.

Unlike a standalone filing tool, ANNA pulls straight from your transactions and receipts, so there’s no need to chase figures from your bank, spreadsheets, and separate filing software.

Here’s what makes ANNA stand out:

• Corporation Tax filing: Prepare your CT600 and Annual Accounts automatically from your transactions
• Self Assessment filing: File your Self Assessment as a director alongside your Corporation Tax return, free in the 2026/27 tax year
• Live tax estimates: Track your Corporation Tax position and see what you’re likely to owe
• Automated bookkeeping: Categorise your transactions automatically without manual data entry
• Easy switching: Upload your trial balance and previous computation for Auto Accountant to pick up
• Built-in business account: Manage your spending, bookkeeping, VAT, Corporation Tax and payroll in one app

Because ANNA tracks, categorises, calculates, and prepares your return automatically, it can save hours of admin and reduce the need for paid accounting support. That’s why it works so well for directors managing everything themselves.

Pricing

Plans start from £0 a month on Pay As You Go, with Business and Big Business tiers adding higher transfer limits. Corporation Tax and Annual Accounts filing comes with ANNA’s Auto Accountant add-on, which costs £29 a month + VAT.

2. TaxCalc

TaxCalc is one of the longer-standing names in the UK tax software industry, and its Corporation Tax module sits alongside Self Assessment and other filing tools in the same suite.

It suits accountants or directors managing multiple tax returns better than someone who only needs to file a single Corporation Tax return each year.

Here’s what TaxCalc has to offer:

• Combined filing: CT600 and personal Self Assessment filing are combined in one subscription
• Established HMRC recognition: TaxCalc has a long track record as a compliant filing tool
• Multi-client support: You can use the tool to file for yourself and family members, and even a small client base
• Full accounting suite: TaxCalc offers modules beyond Corporation Tax, including Accounts Production and VAT Filer

TaxCalc’s drawbacks:

• Dated interface: The software feels less modern than newer, browser-based alternatives
• Steeper learning curve: It can take longer to learn if you’re filing your first return yourself
• Accounts sold separately: The limited company licence files your CT600, but you’ll need an additional package to produce the iXBRL accounts

Pricing

TaxCalc offers annual subscriptions instead of a pay-per-return model. Pricing starts at £142 for a basic CT600 filing licence, with costs rising to several hundred pounds annually when you add Self Assessment, accounts production, and other modules.

3. FreeAgent

FreeAgent is an established accounting platform aimed at freelancers, contractors, and small businesses. It combines everyday accounting with tax and compliance tools, so it can be useful if you want to manage several aspects of your company’s finances in one place.

Here’s what FreeAgent has to offer:

• Automated tax calculations: Your accounting data is used to calculate the figures needed for your Corporation Tax return
• Bank feeds: Connected business bank accounts import transactions automatically into FreeAgent
• Micro-entity filing: Eligible micro entities can prepare and file their Corporation Tax returns directly through the platform
• Accounting and invoicing: Invoices, bills, expenses, and other financial records can all be managed alongside your tax information
• Free banking offers: Eligible customers can access FreeAgent at no extra software cost through participating bank accounts

FreeAgent’s drawbacks:

• Limited support for some scenarios: Certain arrangements, including some loan and participator charge situations, may not be supported
• Ongoing subscription: You pay for the wider accounting platform even if you mainly need Corporation Tax filing
• Less suited to complex companies: Companies with more complicated structures or tax affairs may need specialist software or professional advice

Pricing

FreeAgent can be free if your business has an eligible NatWest, Royal Bank of Scotland, Ulster Bank account, or a Mettle account with at least one transaction per month.

If you aren’t eligible for the free plan, FreeAgent offers monthly and yearly subscriptions, starting at £33 per month.

4. Taxpipe

Taxpipe is a specialist Corporation Tax filing tool designed for companies that want to submit their CT600 without paying for a full accounting platform.

It focuses on the filing process itself, so it’s most relevant to directors who have their accounts and year-end figures prepared elsewhere.

Here’s what Taxpipe has to offer:

• Pay-per-return filing: Taxpipe charges per Corporation Tax return, and there’s no monthly subscription fee
• Guided CT600: The software provides a structured process to help you complete a straightforward Corporation Tax return
• iXBRL accounts: The service generates the electronic accounts required for filing Corporation Tax
• HMRC submission: Completed returns can be submitted directly to HMRC through the platform

Taxpipe’s drawbacks:

• No bookkeeping: You need to maintain your accounts somewhere else
• Manual figures: Financial information needs to be entered into the filing software
• No year-round tax tracking: It doesn’t provide the ongoing bookkeeping and tax monitoring available in a full accounting platform

Pricing

Taxpipe charges £59 per CT600 return. The price includes the filing, iXBRL accounts, and HMRC submission.

5. TinyTax

TinyTax is a Corporation Tax filing service built for small, straightforward companies. It focuses only on filing, aiming to simplify the process for you as much as possible.

Here’s what TinyTax has to offer:

• Dormant company filing: TinyTax supports Corporation Tax filing for dormant companies, offering them an affordable dedicated tier
• Plain-language guidance: The platform provides a guided workflow without the accounting jargon to make the filing process easier for non-accountants
• Portfolio option: Businesses managing several companies can file returns for multiple entities through the same service

TinyTax’s drawbacks:

• Limited scope: TinyTax is designed primarily for simple company structures and straightforward returns
• No bookkeeping: You’ll need another system to manage your company’s accounts throughout the year
• Limited scalability: Businesses with more complex tax requirements may need a more comprehensive solution

Pricing

TinyTax charges £20 per year for a dormant company, £59 per year for a trading company and £99 per year for a portfolio of two or three companies. This makes it an inexpensive option for companies with simple tax affairs.

6. Xero

Xero is a widely used accounting platform that provides bookkeeping, financial management, and business reporting. It can be a strong choice if you seek detailed accounting functionality and plan to use the software year-round.

Xero also offers a Company Accounts and Tax add-on, which lets small companies prepare and file micro-entity (FRS 105) accounts and their CT600 directly to Companies House and HMRC from within Xero, without needing an accountant or a separate Xero Tax subscription.

Here’s what Xero has to offer:

• Bank feeds: Connected business bank accounts can automatically import transactions into Xero
• Bank reconciliation: Transactions can be matched against your accounting records to keep your books up to date
• Invoicing: You can create and manage customer invoices directly in the platform
• Integrations: Xero connects with a wide range of payroll, tax, and business applications
• Accountant access: Your accountant can access your financial records if you decide to outsource your tax work

Xero’s drawbacks:

• Additional cost: Your total spend includes Xero plus the cost of Corporation Tax filing

Pricing

Xero currently offers four pricing plans, starting at £18 a month. Company accounts and tax are charged separately at £120 per year + VAT.

Why ANNA is the best Corporation Tax software

Every tool on this list can help you file your CT600. What separates them is how much work you need to do first.

Standalone filing tools work if you already have your numbers prepared. Accounting software keeps your books, but it usually sits apart from where your money moves, so you still need to reconcile.

ANNA closes both ends, offering a business account, receipt capture, and automatic bookkeeping all in one place. As a result, you can spend less time on admin, reduce the risk of errors and missed deadlines, and know what you owe months ahead.

Get started with ANNA today and get your next year-end handled before the deadline.