Landlords lose the right to claim full tax relief for mortgage interest payments from today (April 5, 2017).

Many landlords will pay more tax as the way property business profits also changes.

Despite a year of protests and a High Court legal challenge, the government has stood firm on the proposals made by former Chancellor George Osborne and has resolutely refused to even water them down.

Mortgage interest tax relief changes are the last in a set of four major changes to the property investment market over recent months.

The first was a 3% stamp duty surcharge for buyers of investment property.

Then, annual 10% wear and tear allowance was scrapped in favour of replacement relief. Wear and tear was paid regardless of if the money spent was maintaining homes to rent by landlords. Replacement relief is only paid if the cash is spent.

Next, the Bank of England tightened buy to let mortgage rules to make borrowing tougher for landlords.

The mortgage interest relief change stops landlords paying higher or additional rate tax (40% or 45%) from claiming more than basic rate tax relief (20%) on the interest they pay on loans against homes to rent.

The full impact of the measure will not be felt for three years, as the changes are phased in and gradually reduce by 2020.

This tax year, landlords paying tax at the higher rate and above can only offset 75% of mortgage interest against property profits. Next year, this falls to 50%, then 25% in 2019.

The government reckons around 440,000 landlords will pay more tax because of the change.

The best way of minimising the tax grab is to look at how investment properties are owned with a spouse. Adjusting shares of ownership can make a significant financial difference if a spouse is a basic rate taxpayer with unused personal tax allowances.

Investigating if refinancing borrowing to reduce the amount of interest paid is also worthwhile.

Mortgage Interest Relief will impact landlords

Mortgage Interest Relief will impact landlords table