Buy-to-let Landlord Income Tax Calculator

You may prefer our new Landlord Income Tax Calculator which incudes detailed information from the 2025 tax year. The calculator below was provided for the transition of tax relief on buy to let properties to allow comparison or income tax calculations for landlords during the transition phase.

This Buy-to-let tax and profit calculator provides a tax calculation for an individual who buys and let properties and pays associated tax though traditional salary deductions which include PAYE and National Insurance.

Buy-to-let tax and profit calculator
£	Rental Income
£	Tax deductible costs excluding Mortgage Interest
£	Mortgage Interest
£	Earnings and other non-savings income
£	Savings Income
£	Net dividend income (UK and foreign)

Buy-to-let tax calculation
			Transition Tax Phase			New Tax Rules
		2016/17	2017/18	2018/19	2019/20	2020/21
	Rental income
-	Tax deductible costs
-	Mortgage interest
=	Pre-tax Profit
	Tax relief %	100%	75%	50%	25%	0
+	Taxable Mortgage interest
	Tax credit rate	0	20%	20%	20%	20%
-	Tax credit amount
=	Taxable Profit

Buy-to-let Income Tax Considerations
For most landlords, your Taxable profit is your income, as such it is processed through traditional income tax methods. Select a year below to produce an income tax estimate¹ for the Tax Profit illustrated for the years above.
	Tax Year

About this tax calculation

This tax calculation applies the tax allowances for the current year against all income forecasts shown in the Buy-to-let calculator. It does not use forecast income tax figures for future years due to the variance that tends to occur from year to year. The income tax calculations are designed to provide you a comparative benchmark of what your earnings from your properties could look like after the new tax laws come into effect for private landlords.

Landlord Guides and Tax Calculators

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