Ontario’s plan to merge sales taxes will mean a seven per cent increase in costs for condo owners, NDP Leader Andrea Horwath said Thursday, as she urged people in the province to fight back against the changes.

Although the harmonized sales tax does not apply directly to condo fees, Horwath said, it will increase expenses such as hydro, repairs and maintenance.

“All of these little pieces are going to be taxed eight per cent more, and so when you combine that effect, you’re going to see maintenance fees overall rise by about seven per cent,” said Horwath.

That would mean an increase of about $28 a month for people who pay monthly condo fees of $400.

“Governments should be coming up with policies that make housing more affordable for people, not less affordable,” Horwath said.

There are more than 350,000 condo units in Ontario.