We sort your Self Assessment for you. £119, all in.

Fast, effortless and 100% online.

We sort your Self Assessment for you. £119, all in.

Mortgage interest tax relief changes explained

We've updated this guide on 5th March 2021

How did the mortgage interest tax relief change?

Before 2017: The interest for your mortgage was 100% deductible. Since most landlords have interest-only mortgages (where you pay only the interest each month and the price of the property at the end of the period), you could basically claim all mortgage repayments.

After 2017: changes are rolled gradually (see below) and landlords receive a new tax credit – somewhat less generous than the existing mortgage interest tax relief.

The buy-to-let mortgage interest tax relief from 2018-19 to 2020-21

It has fallen gradually each year:

Tax YearMortgage interest deductible 100%Deductible at a 20% tax credit
2016-2017100%
2017-201875%25%
2018-201950%50%
2019-202025%75%
2020-2021100%

The 20% tax credit applies to the lowest of:

  • mortgage interest
  • property profits
  • total income above the personal allowance.

What happens now?

It all depends on two things:

  • is your total income (except allowable expenses, and mortgage interest will not be one of them) above the higher tax band (50,270 in 2021/2022)?
  • will you make significant investments in your buy-to-let property, like renovations, repairs, or furnishings?

3 things can happen:

You might also want to read our guide to paying tax on rental income here.

Want regular tips from us?

Sign up for important updates, deadline reminders and basic tax hacks sent straight to your inbox.

Category

We sort your Self Assessment for you. £119, all in.

Fast, effortless and done for you online – the way tax returns should be done. Free to sign up.