Taxpayers are funding private landlords to the tune of just over £1,000 per household.

Generation Rent claims that landlords are getting £26.7bn a year in taxpayers’ subsidies. It says the sum is made up of £9.3bn housing benefit; £1.69bn tax relief on ‘wear and tear’; £6.63bn that landlords do not have to pay on mortgage interest payments; and £9.06bn of tax that landlords do not pay on annual capital gains.

The campaign group calculates that landlords, who house 4.75m households in the UK, are earning £77.7bn a year but pay only £8.9bn in tax.

The earnings figure consists of £42.3bn in rent and £35.4bn in rising house prices.

Generation Rent is calling for an additional landlord levy of 22% on rental income, which it said would recoup the £9.3bn housing benefit bill and which it says should be used to fund 90,000 new council houses.

Alex Hilton of Generation Rent said: “While renters have borne the brunt of austerity, landlords have enjoyed their own little economy the size of Morocco’s supported by subsidies from the UK taxpayer that could be better used fixing the housing crisis.

“It’s time landlords started paying more of their fair share so first-time buyers could have a level playing field and the government could have the resources to build more social housing.”

* A surge in buy-to-let took the number of investors up to 1.63m in the tax year 2012/2013. That was 120,000 more than in the previous tax year, London agent Ludlow Thompson has said.

The firm calculates that landlords’ net income – rental income minus all costs – reached £13.1bn in 2012/13, 8% higher than the £12.1bn net income in 2011/12.