The Quebec Abatement
Quebec residents pay federal income tax reduced by 16.5%. It is not a loophole or a credit you claim — it is applied automatically, and it exists because Quebec administers programs the federal government runs elsewhere.
How it works
Federal tax is calculated normally, then reduced by 16.5%. On a $80,000 salary in Quebec the abatement is worth $1,517 a year.
Why it exists
Quebec opted out of several federal cost-shared programs and funds them itself. The abatement returns the corresponding federal tax room to Quebec so residents are not charged twice. This is also why Quebec’s own provincial rates are higher than most provinces’ — the province is funding more.
Why comparisons mislead without it
Comparing Quebec’s headline provincial rates against another province’s without applying the abatement overstates the gap. Our province comparison applies it, along with QPP, QPIP and the lower Quebec EI rate.
Common questions
How much is the Quebec abatement?
16.5% of your basic federal tax. It is applied automatically — there is nothing to claim.
Does the abatement mean Quebec is low-tax?
No. It reduces federal tax, but Quebec provincial rates are higher than most provinces, and Quebec workers also pay QPP at a higher rate than CPP plus QPIP premiums.
Sources: Canada Revenue Agency — T4127 Payroll Deductions Formulas (122nd and 123rd editions, 2026) and the published 2026 federal, provincial and territorial rate tables; Revenu Québec — 2026 income tax rates and the 2026 source-deduction parameters. Rates verified 9 August 2026.
Figures are computed from those published rates by our own engine, which is validated against the CRA’s Payroll Deductions Online Calculator. See how we calculate.