Outside the GTA · 2026 rates

Property tax in St. Catharines

St. Catharines's rate is 1.84%. On a $1,000,000 plex that is $18,422 a year, the largest expense line after the mortgage.

What the rate is made of

The municipality publishes its total rate undivided.

Against neighbouring cities

City	Rate	On $1,000,000
Niagara Falls	1.75%	$17,489
North Bay	1.81%	$18,104
St. Catharines	1.84%	$18,422
Greater Sudbury	1.91%	$19,072
Thunder Bay	1.92%	$19,231

Land transfer tax

On a $1,000,000 building the tax is $16,475. The schedule is provincial: it is the same in St. Catharines as anywhere else in Ontario, outside the City of Toronto which adds a second one.

Your assessment is frozen at 2016 values

Ontario taxes on January 1, 2016 values, and a sale does not reset them. On a building bought at $1,000,000 whose assessment sits near $550,000, the tax is computed on that assessment, not on the price.

That is an advantage today and a liability tomorrow: when the roll is updated, expect about $8,290 more per year in St. Catharines, or $691 a month. Plexmeter derives it from your own tax bill, with no market averages.

What is the property tax rate in St. Catharines?

St. Catharines's rate is 1.84%. On a $1,000,000 plex that is $18,422 a year.

What value is Ontario property tax calculated on?

Ontario taxes on January 1, 2016 values, and a sale does not reset them.