How is withholding tax calculated in Canada?

Your employer calculates withholding tax by annualizing your pay-period income, applying federal and provincial tax brackets, subtracting personal tax credits (from your TD1 form), then dividing back to a per-pay-period amount. CPP and EI are calculated separately based on insurable earnings up to their annual maximums.

What is the TD1 form?

The TD1 Personal Tax Credits Return tells your employer which tax credits to factor into withholding calculations. The federal TD1 includes the Basic Personal Amount ($16,129 for 2026) plus any additional credits (tuition, disability, dependants). Each province has its own TD1 form with the provincial Basic Personal Amount.

Why is my tax refund so large or so small?

A large refund means too much tax was withheld during the year — you gave the government an interest-free loan. This often happens with RRSP contributions, charitable donations, or multiple tax credits not reflected on your TD1. A small refund (or amount owing) means withholding was close to your actual tax liability, which is ideal. You can file Form T1213 to reduce withholding if you have recurring deductions.

How do I reduce my tax withholding?

File Form T1213 (Request to Reduce Tax Deductions at Source) with the CRA if you have regular RRSP contributions, childcare expenses, support payments, or other recurring deductions. Once approved, the CRA issues a letter to your employer authorizing reduced withholding, giving you more take-home pay each paycheque instead of waiting for a refund.

How does CPP withholding work?

CPP contributions are 5.95% of pensionable earnings between $3,500 and $71,300 (the first ceiling). CPP2 adds 4% on earnings between $71,300 and $81,200. Your employer deducts CPP each pay period. Once you hit the annual maximum ($4,034 for CPP, $396 for CPP2), no more CPP is deducted — you will see larger paycheques later in the year.

How does EI withholding work?

EI premiums are 1.64% of insurable earnings up to $65,700 (maximum premium of $1,077). Your employer deducts EI each pay period until you reach the annual maximum. Quebec employees pay a lower EI rate (1.31%) because QPIP replaces part of EI coverage, but they also pay QPIP premiums.

Why do my paycheques change size during the year?

Your paycheques may increase later in the year because you have reached the CPP and EI annual maximums. Once you max out CPP (~$4,034) and EI (~$1,077), those deductions stop and your take-home pay increases. For someone earning $90,000, this typically happens around October-November, resulting in noticeably larger final paycheques.

What withholding rate applies to bonuses?

Bonuses are taxed using the "bonus method" — the CRA treats the bonus as if it would be paid every pay period, calculates the annualized tax, then subtracts the tax already computed on regular pay. This often results in a higher effective withholding rate on bonuses (30-50%), but you may get some back at tax time if the annualized calculation overestimates your actual tax.

Withholding Tax Calculator

The withholding tax calculator estimates per-paycheque deductions for Canadian employees. Enter your annual salary, pay frequency, and province to see a detailed breakdown of federal tax, provincial tax, CPP, and EI withheld from each paycheque.

How this calculator works

Enter your annual salary, your pay frequency (weekly, bi-weekly, semi-monthly, or monthly), your province, any additional tax credits beyond the basic personal amount, and any per-pay RRSP deductions. The calculator shows per-paycheque and annual breakdowns of every deduction.

Take-Home Pay Per Paycheque

Gross Pay Per Period

Federal Tax Withheld

Provincial Tax Withheld

CPP Deduction

EI Premium

Total Deductions

Net Pay (take-home)

Annual Summary

Annual Gross

Annual Federal Tax

Annual Provincial Tax

Annual CPP

Annual EI

Annual Take-Home

Effective Total Tax Rate

What gets deducted from your paycheque

Every Canadian paycheque includes four main deductions:

1. Federal income tax

Calculated using 2026 federal brackets and the Basic Personal Amount ($16,129). Your employer annualizes your pay-period income, applies the progressive brackets, then divides by your number of pay periods.

Federal Bracket	Tax Rate
Up to $57,375	15%
$57,375 – $114,750	20.5%
$114,750 – $158,468	26%
$158,468 – $220,000	29%
Over $220,000	33%

2. Provincial income tax

Each province has its own brackets and Basic Personal Amount (BPA):

Province	Lowest Rate	Highest Rate	Provincial BPA
Alberta	10%	15%	$22,323
British Columbia	5.06%	20.5%	$12,580
Ontario	5.05%	13.16%	$11,865
Quebec	14%	25.75%	$18,571
Manitoba	10.8%	17.4%	$15,780
Saskatchewan	10.5%	14.5%	$18,491
New Brunswick	9.4%	19.5%	$13,044
Nova Scotia	8.79%	21%	$8,481
PEI	9.65%	18.75%	$13,500
Newfoundland	8.7%	21.8%	$10,818

3. CPP contributions

Component	Rate	Annual Maximum
CPP (employee)	5.95% on $3,500–$71,300	$4,034
CPP2	4.00% on $71,300–$81,200	$396

4. EI premiums

Region	Rate	Max Insurable	Max Premium
Outside Quebec	1.64%	$65,700	$1,077
Quebec	1.31%	$65,700	$860

Sample paycheque breakdown ($80,000 salary, Ontario, bi-weekly)

Component	Per Pay (26 periods)	Annual
Gross pay	$3,077	$80,000
Federal tax	-$360	-$9,360
Ontario tax	-$185	-$4,810
CPP	-$155	-$4,034
EI	-$41	-$1,077
Net pay	$2,336	$60,719

Note: CPP and EI deductions reduce to $0 once maximums are reached, increasing late-year paycheques.

How to optimize your withholding

1. Update your TD1 forms

Claim all applicable credits: tuition, disability, eligible dependant, caregiver amount, pension income. Each credit reduces the tax withheld per paycheque.

2. File Form T1213

If you make regular RRSP contributions, have recurring childcare expenses, or pay deductible support payments, ask the CRA to authorize reduced withholding. This gets you the tax benefit every paycheque instead of as an annual refund.

3. Check your withholding mid-year

Compare your year-to-date tax deducted against your expected annual tax liability. If you are over-withheld, consider filing T1213. If under-withheld, set money aside.

Paycheque timing: when deductions stop

Salary	CPP Maxed (approx.)	EI Maxed (approx.)
$60,000	November	November
$80,000	August	September
$100,000	July	July
$120,000	June	June
$150,000	May	May

Once CPP and EI max out, your take-home jumps. For someone earning $100,000, the July+ paycheques include an extra ~$200 each.

Salary Calculator — Full salary take-home calculation
Income Tax Calculator — Annual tax breakdown by province
Marginal Tax Rate Calculator — Find your marginal rate
Raise Calculator — See how a raise changes your paycheque
Overtime Calculator — Calculate overtime after withholding
RRSP Calculator — Optimize RRSP contributions vs withholding