Calculators
Practical tools for running a one-person business in the UK.
Tax & National Insurance
Income Tax, NI and setting money aside.
Tax & National Insurance · Live
Self-Employed Tax Calculator
Income Tax, Class 4 NI, take-home pay and how much to put aside each month.
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Tax & National Insurance · Coming next
MTD Readiness Planner
See when Making Tax Digital for Income Tax applies to you.
Tax & National Insurance · Coming next
CIS Calculator
Construction Industry Scheme deductions and refunds.
Tax & National Insurance · Coming next
Tax Savings Calculator
Model the effect of pension contributions and expenses.
VAT
VAT sums and registration thresholds.
VAT · Coming next
VAT Calculator
Add or remove VAT at UK rates.
VAT · Live
VAT Threshold Calculator
Check your rolling 12-month turnover against the £90,000 VAT threshold, with deadlines and dates.
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Business structure
Compare ways of trading.
Business structure · Coming next
Sole Trader vs Limited Company
Compare take-home under each structure.
Pricing & rates
Work out what to charge.
Pricing & rates · Coming next
Hourly & Day Rate Calculator
Turn a target income into a rate that covers tax and time off.
Property
Landlord income and tax.
Property · Coming next
Landlord Profit & Tax Calculator
Estimate rental profit and tax.