Business Tax Calculators UK | VAT, Corporation Tax & Employer NI

Browse 21 UK business calculators covering limited companies, VAT, payroll, pensions, mileage, allowances, cash flow and commercial planning.

Corporation Tax Calculator

Estimate company Corporation Tax, marginal relief and after-tax profit.

Calculate employer National Insurance and total employment cost.

Add or remove VAT using standard, reduced and zero rates.

Estimate tax-efficient director salary, employer NI and take-home pay.

Compare taking company profits as salary or dividends.

Compare extracting profit as dividends or employer pension contributions.

Estimate VAT payable under the Flat Rate Scheme.

Extract VAT from VAT-inclusive prices and invoices.

Estimate import VAT and duty on goods brought into the UK.

Check zero-rated export invoice totals and VAT treatment.

Estimate salary, employer NI, pension and total payroll cost.

Calculate employer pension contributions and payroll impact.

Estimate allowable mileage claims using HMRC advisory rates.

Estimate tax relief from capital allowances on business assets.

Estimate Annual Investment Allowance relief for qualifying assets.

Project opening cash, receipts, payments and closing cash.

Calculate the sales volume or revenue needed to break even.

Work out gross and net profit margin from revenue and costs.

Calculate selling price, markup and gross margin.

Estimate company profit after costs, payroll and tax.

Forecast Corporation Tax from expected annual company profits.