New buy-to-let tax rules: mortgage income tax relief is changing this week

New tax rules on buy-to-let property come into force on April 6, 2017. Heres everything landlords need to know.

New rules on buy-to-let income tax are coming into effect on April 6, so landlords should brace themselves for smaller profits over the coming years.

The move is part of the government’s clapdown on landlords, and comes one year after the 3% Stamp Duty surcharge on additional properties was introduced.

Here we explain what the changes will mean for your buy-to-let portfolio.

At present, when working out your tax bill on income from rent you are able to deduct mortgage interest before tax is payable.

So, if you receive £10,000 a year in rent, but you pay £8,000 in mortgage interest you only pay tax on the profit, so £2,000.

A basic rate taxpayer would pay 20% tax on that £2,000 so £400, a higher rate taxpayer 40% (£800) and an additional rate taxpayer 45% (£900).

What is changing?
Under new rules coming into effect next week, tax relief on finance costs on residential properties will be gradually decreased and eventually replaced in 2020 by a 20% tax credit.

This will have a significant impact on mortgage interest, which is by far the biggest ‘finance cost’ landlords will contend with.

The way rental income is calculated is also changing.

Instead of being taxed on your profit after mortgage interest has been deducted the rent you receive will be classed as income.

How it will work in practice
So, using our earlier example where you received £10,000 in rent and paid £8,000 in mortgage interest under the new rules you would owe tax on the full £10,000.

But you will be able to claim 20% tax relief on the mortgage interest.

This should mean a basic rate taxpayer’s bill remains the same as under the old rules (although there are exceptions, which we’ll discuss later).

But a higher rate taxpayer will see a huge cut in their profits.

A basic rate taxpayer under the new rules would owe £400, same as under the old rules.

That’s a 20% income tax bill, £2,000, minus the 20% tax relief on the £8,000 mortgage interest, £1,600.

A higher rate taxpayer would have owed £800 under the old rules. But their bill will soar to £2,400.

That’s £4,000 income tax on the rental income minus the £1,600 tax relief on the mortgage interest.

Will I be pushed into a higher tax bracket?
The new way rental income is calculated for tax purposes could also see some people pushed into a higher income tax bracket.

For example, a basic rate taxpayer earning £35,000 from their job and receiving £10,000 a year in rental income at the moment would remain in the basic rate bracket as the taxable income from rent is only £2,000 in our example.

But, under the new rules they would be pushed into the higher rate tax bracket as the full £10,000 would count as income.

When does it come into affect?
The new rules are being phased in from April 6, 2017. In the 2017/18 tax year, you’ll still be able to deduct 75% of your costs from your rental income before tax is due.

In 2018/19 that will fall to 50%, then 25% in 2019/20 then in 2020/21 you will no longer be able to deduct costs.

At the same time the basic rate tax relief will also be phased in.

Will I be worse off?
If you are a higher or additional rate taxpayer you will definitely lose out as the amount of tax relief you can claim will be capped at 20%.

But, you could also end up worse off if you are a basic rate taxpayer.

That’s because the new way rental income will be calculated for tax purposes could mean you are pushed into a higher income tax bracket.


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