💼 Business

Business Calculators

Margin, break-even and freelance day rates — plus tax tools for the self-employed and limited companies.

All Business Calculators

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Profit Margin Calculator
Gross margin, net margin and markup from cost and selling price — and why margin ≠ markup.
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Break-Even Calculator
How many units you need to sell to cover fixed costs — break-even in units and revenue.
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Day Rate Calculator
The freelance/contractor day rate you need to charge to match a target salary.
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Corporation Tax
19% small profits rate, 25% main rate and marginal relief on company profits.
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VAT Calculator
Add or remove VAT at 20%, 5% or 0% — instant results for invoicing.
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Self Assessment
Estimate your tax bill from trading profit and rental income, including Class 4 NI.
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Dividend Tax
Tax on dividends using the £500 allowance — for company directors.
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Salary to Hourly
Convert annual salaries to hourly, daily and pro rata rates.