NSW Treasury said that over the past 15 years bracket creep had resulted in the average rate of stamp duty payable increasing from 3.37 per cent to 4.05 per cent.
Perrottet said if stamp duty brackets had been indexed to CPI 15 years ago, the amount payable on a $500,000 home would today be around $2,000, while the stamp duty levied on a $1.5 million home would be around $6,400 lower.
Under a package of concessions introduced last year, first homebuyers in NSW are already exempt from paying stamp duty on properties valued under $650,000 and pay discounted stamp duty on properties valued under $800,000.
“This reform is just another example of us delivering on our promise and combined with the introduction of new first homebuyer concessions it is now becoming easier for people to realise the dream of owning a home.”
The stamp duty reforms come amid a downturn in the Sydney property market with dwelling values declining 8 per cent since their peak in July 2017.
Housing Industry Association principal economist Tim Reardon highlighted the volatility of stamp duty as a source of tax revenue.
“A small fall in house prices has had a disproportionate impact of state government revenue,” Reardon said.
“A better long term solution would be to phase out stamp duty altogether and replace it with a form of revenue that doesn’t punish buyers for wishing to pursue their dream of owning a home.”
The tax reform are expected to cost the state budget about $185 million over the three years after the changes take effect.
In the 2017-18 financial year, NSW property buyers paid $9.8 billion in stamp duty on 228,000 sales, with stamp duty accounting for 25 per cent of all state tax revenue.
A cooling property market wiped more than $1 billion of stamp duty revenue from state coffers, according to this year’s budget.
The NSW government predicted stamp duty would produce $5.6 billion over the financial year.