Tax & Company calculators
VAT, Corporation Tax and the tax side of how you pay yourself, using 2026/27 UK rates.
- VAT CalculatorAdd VAT to a net price or remove VAT from a VAT-inclusive price.
- Corporation Tax CalculatorCompany tax on your profits, including Marginal Relief between £50,000 and £250,000.
- Salary vs Dividend CalculatorCompare how much you keep from different salary and dividend combinations.
- Sole Trader vs Limited Company CalculatorEstimated take-home from the same profit as a sole trader or through a company.
- Late Payment Interest CalculatorStatutory interest and fixed compensation on an overdue commercial invoice.
- Day Rate to Salary CalculatorTurn a contract day rate into an approximate annual salary equivalent.
- Dividend Tax CalculatorIncome Tax on your dividends once salary, allowances and tax bands are applied.
- VAT Registration Threshold CalculatorTrack rolling 12-month taxable turnover against the £90,000 registration threshold.
- CIS Deduction CalculatorConstruction Industry Scheme deductions on labour, with VAT and materials excluded.
What these calculators help with
These calculators handle the tax questions most limited company directors and sole traders run into: how much VAT to charge or strip out, what Corporation Tax a profit figure creates once Marginal Relief is taken into account, and how much of the money actually reaches your bank account depending on how you take it. Statutory rates are held centrally and versioned by tax year, so the same page keeps working as rates change.
Who they are for
Written for sole traders, first-time company directors and small limited companies without an in-house finance team. You do not need to know the terminology in advance — each page explains terms such as taxable turnover, Marginal Relief and the Dividend Allowance in plain English before it uses them.
How they fit together
They follow the order most people meet them in: charge or strip out VAT on a sale, check whether rolling turnover has reached the registration threshold, work out Corporation Tax on the profit that remains, then decide how to take that profit as salary, dividends, or a mixture. The sole trader versus limited company comparison sits alongside them for anyone still deciding on a structure, and the CIS calculator covers construction payments where deductions are taken at source.