A Comprehensive guide to Buy-to-Let Taxes for Landlords

Buy-to-let properties can be an excellent investment, but navigating the tax landscape can be daunting. In this comprehensive guide, we will cover the various taxes you may be liable for as a buy-to-let landlord, along with the tax reliefs and allowances available to help you minimise your tax liability.

Stamp Duty Land Tax (SDLT)

When purchasing a buy-to-let property in England or Northern Ireland, you will be required to pay Stamp Duty Land Tax (SDLT). The rates for SDLT on buy-to-let properties are higher than those for residential properties, with an additional 3% surcharge applied to each band. Here are the current SDLT rates for buy-to-let properties:

  • Up to £40,000: No SDLT payable
  • £40,001 to £125,000: 3%
  • £125,001 to £250,000: 5%
  • £250,001 to £925,000: 8%
  • £925,001 to £1.5 million: 13%
  • Over £1.5 million: 15%

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Income Tax on Rental Income

As a buy-to-let landlord, you will be liable for income tax on your rental income. The amount of tax you pay will depend on your total taxable income, which includes your rental income and any other sources of income.

Income tax rates in the UK are as follows:

  • Personal Allowance (tax-free): Up to £12,570
  • Basic rate (20%): £12,571 to £50,270
  • Higher rate (40%): £50,271 to £150,000
  • Additional rate (45%): Over £150,000

It’s important to note that you are only taxed on your rental profits, not your total rental income. To calculate your rental profits, you can deduct allowable expenses, such as:

  • Mortgage interest (restricted, see Tax Relief on Mortgage Interest section)
  • Property maintenance and repairs
  • Insurance premiums
  • Council tax and utility bills (if paid by the landlord)
  • Legal and professional fees

Capital Gains Tax (CGT)

When selling a buy-to-let property, you may be liable for Capital Gains Tax (CGT) on any profit made from the sale. The rates for CGT on buy-to-let properties are as follows:

  • Basic rate taxpayers: 18%
  • Higher and additional rate taxpayers: 28%

To calculate your capital gain, subtract the original cost of the property, along with any allowable expenses (such as Stamp Duty, legal fees, and improvement costs), from the sale price. Keep in mind that you have an annual CGT allowance (£12,300 for the 2021/22 tax year), which allows you to earn a certain amount of profit tax-free.

Tax Relief on Mortgage Interest

Prior to April 2020, landlords could deduct mortgage interest from their rental income to reduce their tax liability. However, changes to the tax rules have phased out this relief, replacing it with a basic rate tax credit (currently 20%).

This means that regardless of your income tax bracket, you can only claim relief at the basic rate. To calculate your mortgage interest tax relief, multiply your mortgage interest payments by 20% and subtract this figure from your income tax bill.

Wear and Tear Allowance

Before April 2016, landlords could claim a flat-rate ‘wear and tear allowance’ to cover the cost of replacing furnishings in their rental properties. This has been replaced by the ‘Replacement of Domestic Items Relief’, which allows landlords to claim tax relief on the actual cost of replacing items such as:

  • Furniture
  • Appliances
  • Kitchenware
  • Soft furnishings (e.g., curtains, carpets)

To claim this relief, you must keep records of the replaced items, including their cost and the date of replacement.

Letting Agent Fees

Letting agent fees, including management and tenant-finding services, are tax-deductible expenses for buy-to-let landlords. These fees can help reduce your overall tax liability, as they are deducted from your rental income when calculating your taxable profit.

Annual Tax on Enveloped Dwellings (ATED)

ATED is a tax applicable to high-value residential properties owned by a company or other ‘non-natural persons’ (such as partnerships with a corporate member). If your buy-to-let property falls within this category, you may be liable for ATED, which is charged annually based on the property’s value.

For the 2021/22 tax year, ATED charges are as follows:

  • £500,001 to £1 million: £3,700
  • £1,000,001 to £2 million: £7,500
  • £2,000,001 to £5 million: £25,300
  • £5,000,001 to £10 million: £58,850
  • £10,000,001 to £20 million: £118,600
  • Over £20 million: £237,400


Understanding the tax implications of owning a buy-to-let property is crucial for landlords looking to maximise their investment returns. By familiarising yourself with the various taxes and reliefs discussed in this guide, you can make informed decisions about your property investments and ensure you are compliant with your tax obligations.

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