Free tools for limited company directors
Five practical tools built from current Companies House and HMRC rules. Work out your deadlines, check whether you are late, test a company name, compare structures and settle an expense question in seconds.
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Filing deadline calculator
Enter your incorporation date and get every Companies House and HMRC deadline for the next 24 months, plus free email reminders keyed to your own year end.
Open the toollate filing penalty
Is my company late? Penalty checker
See whether your accounts, corporation tax payment and CT600 have passed their dates, which penalty band you are in and what another month costs.
Open the toolcheck company name availability
Company name availability checker
Test a name against the Companies House rules: permitted endings, the same as comparison, sensitive words and characters, before you pay to incorporate.
Open the toolsole trader or limited company
Sole trader vs limited company
Compare take home pay under both structures for 2025/26 and 2026/27, with income tax, National Insurance, corporation tax and dividends side by side.
Open the toolallowable expenses limited company
Expenses checker
Type any cost and see whether your company can claim it, the HMRC rule behind the answer, and where it becomes a taxable benefit for you as a director.
Open the toolWhy we publish these
Most limited company mistakes are timing mistakes. A first year end that runs past twelve months, a corporation tax payment that falls due three months before the return, a confirmation statement nobody diarised. None of that needs an accountant to explain, it needs a date in your calendar.
The tools above answer the questions directors actually search for, with the rule and the official source behind each answer. If you want the same clarity applied to your own company, our accountancy services cover statutory accounts, corporation tax, VAT and payroll on fixed monthly fees, published in full on our fees page.
Prefer a calculator?
Our tax calculators cover dividend tax, salary and dividend planning, contractor take home pay, corporation tax, VAT, payroll and Self Assessment for 2025/26 and 2026/27.
Common questions
Are these tools free to use?
Yes, all five are free and need no sign up. The deadline tool offers optional email reminders, and basic questions about your answers are free too. Technical work is quoted before we start.
Are the figures up to date?
Rates and penalty bands follow current published GOV.UK, HMRC and Companies House guidance, and the tax tools cover both 2025/26 and 2026/27. Each page shows the date it was last reviewed and who reviewed it.
Can I rely on the results for filing?
Use them for planning. They are estimates from published rules and cannot see your full circumstances, so confirm anything you are about to file, or ask us to check it.