Calculators
Free calculators for UK landlords
Every tool is free, runs in your browser and shows how the answer was worked out. New ones are added regularly.
Tax Income tax, MTD and Self Assessment
Tax
Landlord tax calculator
The tax your rent adds to your bill, mortgage interest relief, and how much to set aside each month.
Work out my tax →
MTD
Do I need Making Tax Digital?
Check if and when quarterly updates to HMRC start for you, based on the 2026 to 2028 thresholds.
Check in 30 seconds →
Tax
Property allowance checker
Is the £1,000 property allowance better than claiming your actual costs?
Coming soon
Tax
Self Assessment bill estimator
Your January bill and payments on account, worked out for landlords.
Coming soon
Returns Yield and cash flow
Returns
Rental yield calculator
Gross and net yield on a buy-to-let, before and after costs.
Coming soon
Buying Costs when you purchase
Buying
Stamp duty calculator
The extra stamp duty on a second property or buy-to-let, by country.
Coming soon