Business decisions, calculated.
Straightforward UK calculators for tax, pricing, employment, banking and the everyday numbers that come with running a small business — for sole traders, company directors and anyone starting out.
Free to use. No registration. Clear workings. Current UK rates.
VAT · Corporation Tax · Margin · Mileage · Holiday Entitlement
Popular calculators
Start with the tools small businesses use most often.
- Tax & CompanyVAT CalculatorAdd VAT to a net price or remove VAT from a VAT-inclusive price.Calculate
- Tax & CompanyCorporation Tax CalculatorCompany tax on your profits, including Marginal Relief between £50,000 and £250,000.Calculate
- Pricing & ProfitGross Margin & Markup CalculatorMargin, markup and profit per unit — plus the price you need for a target margin.Calculate
- Tax & CompanySalary vs Dividend CalculatorCompare how much you keep from different salary and dividend combinations.Calculate
- Tax & CompanySole Trader vs Limited Company CalculatorEstimated take-home from the same profit as a sole trader or through a company.Calculate
- EmployeesEmployee Cost & Employer NI CalculatorThe full annual cost of hiring, including employer National Insurance and pension.Calculate
- Travel & ExpensesHMRC Business Mileage CalculatorApproved mileage for your own car, van, motorcycle or bicycle at HMRC rates.Calculate
- EmployeesHoliday Entitlement CalculatorStatutory paid annual leave in days or hours, pro-rated for part years.Calculate
Browse by category
Find a calculator by the part of your business you are working on.
Tax & Company
VAT, Corporation Tax, and how you pay yourself from a limited company.
Pricing & Profit
Work out what to charge, what you keep, and how much you need to sell.
Employees
What an employee really costs once National Insurance and pension are added.
Banking & Payments
The everyday cost of banking and taking card payments.
Travel & Expenses
Mileage, mileage relief, company car fuel rates and the cost of running a vehicle.
Why use BusinessCalculator?
- Free to use
- No registration
- Clear workings
- Current UK rates (2026/27)
- Plain-English explanations
Built around published UK rates and transparent calculations.
Every statutory calculator uses centrally maintained 2026/27 rates and deterministic formulas — never generative AI. Read our methodology.