Tax Calculator CanadaPay · tax · GST/HST · 2026Calculators

Tax included → before tax

Reverse Sales Tax Calculator

Have a total with tax already in it? Enter it here to split out the price before tax and each tax, for expense claims, invoices and input tax credits.

I have the price

Ontario HST is 13%: 5% federal and 8% provincial. Some items get a point-of-sale rebate of the 8% provincial part (children’s clothing and footwear, books, diapers, prepared food under $4).

HST 13%
Before tax
$88.49
HST (13%)
$11.51
Before tax
$88.49

Rates used

ProvinceTaxGSTProvincialTotal
OntarioHST5%8%13%
QuebecGST + QST5%9.975%14.975%
British ColumbiaGST + PST5%7%12%
AlbertaGST only5%—5%
ManitobaGST + RST5%7%12%
SaskatchewanGST + PST5%6%11%
Nova ScotiaHST5%9%14%
New BrunswickHST5%10%15%
Newfoundland and LabradorHST5%10%15%
Prince Edward IslandHST5%10%15%
Northwest TerritoriesGST only5%—5%
YukonGST only5%—5%
NunavutGST only5%—5%

Questions people ask

+How do you reverse-calculate sales tax?

Divide the total by 1 plus the tax rate. With 13% HST, divide by 1.13: $113 including tax is $100 before tax and $13 of HST.

+Why not just take 13% off the total?

Because the tax was 13% of the smaller pre-tax price, not of the total. Taking 13% off $113 gives $98.31, which is $1.69 too low.

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