Over a third of landlords are looking to cut their annual spending, according to the latest research by Kent Reliance.
Landlords currently contribute £15.9bn per year to the British economy, a figure that has more than doubled since 2007.
A survey conducted on behalf of Kent Reliance revealed that 36% of landlords are already reducing or planning to reduce their spending.
This indicates that across the private rented sector, total planned cuts would reduce spending by more than £500m each year.
John Eastgate, sales and marketing director of OneSavings Bank, said: “Trying to tackle the housing crisis by targeting landlords with punitive taxes is very simple and politically highly palatable, but has unintended consequences.
“One side effect of the recent changes, and rising running costs, will be the professionalisation of the sector as amateur and accidental landlords leave the market.
“There is nothing wrong with having fewer, bigger landlords, but that alone will not help more young people get homes.”