Why a bigger refund is not the same as paying less tax

Every spring, people compare refunds the way they compare raises. A bigger cheque feels like a better tax year, and a smaller one, or a balance owing, feels like a mistake or a penalty. Neither feeling tells you much. A refund is the difference between two numbers, and only one of them is your tax.

This matters more than usual for the 2026 tax year. The federal rate cut described in our file on the new 14% rate lowers the tax many people owe. Whether it also makes their refund bigger depends on something else entirely: how much was taken off during the year.

The number everyone compares

The bottom line of a notice of assessment is a refund or a balance owing. It is the most visible figure on the page, and for many households the only one anyone reads. But above it sits the figure that actually describes the year: total tax payable, after all deductions and non-refundable credits. That is the cost of the year’s income tax. The refund is a settling-up.

What a refund actually measures

In simplified form, the calculation at the end of a return is:

Tax payable, C, depends on your income, deductions and credits. Withholding, A, depends on payroll formulas, the TD1 you gave your employer and whether all your income had tax taken off. The two are calculated separately. A refund simply means A plus B was larger than C: you prepaid more than you owed, and the CRA is returning the difference without interest.

Same tax, three different results

The table follows three people with the same taxable income of $60,000 in 2026 and the same simplified federal tax, using only the basic personal amount as a credit. Only the amount withheld differs.

All three paid exactly the same federal tax: $8,496.01 on the first two slices of their income, less the $2,303.28 basic personal credit. The middle person was not better off. They lent the government $1,307.27 for up to a year and got it back in spring. The third person was not penalised; they had simply prepaid too little.

Why withholding and tax drift apart

• Payroll assumes the year looks like this pay period. A job that starts in September, or a long unpaid leave, means the formulas overestimate annual income and withhold too much.
• Two jobs. Each employer withholds as if it were your only one. Claiming the basic personal amount on both TD1s is a common cause of a balance owing, as our file on January paycheque changes explains.
• Deductions payroll never sees. A First Home Savings Account contribution, moving expenses or home office costs reduce tax only when the return is filed, so they usually produce a refund.
• Credits claimed on the return. Medical expenses and charitable donations work the same way.
• Income without withholding. Self-employment, rental income or investment income usually has no tax taken off at all.

The exception: refundable credits

Most credits are non-refundable: they can reduce tax to zero, but not below. A few, such as the Canada Workers Benefit, are refundable. They are paid even if no tax is owed, so they can create a refund for someone who paid no tax at all. In that case, the refund is a genuine payment rather than the return of a prepayment. It is the one situation where a larger refund can reflect money you would not otherwise have had.

When the balance goes the other way

A balance owing is due on the filing deadline for most people, April 30 of the following year, so for the 2026 tax year, April 30, 2027. Self-employed people have until June 15 to file, but any balance is still due on April 30. Interest applies to unpaid amounts after the due date.

If a balance owing becomes large and regular, the CRA may ask for instalments. According to the CRA, you have to pay instalments for 2026 if your net tax owing is more than $3,000 ($1,800 in Quebec) for 2026 and was also more than that in 2025 or 2024. Instalments are due on March 15, June 15, September 15 and December 15.

Adjusting withholding on purpose

Neither a large refund nor a large balance is necessary. Two official forms let you move withholding closer to your real tax:

• TD1: to ask your employer to withhold an additional amount each pay, or to correct the credits you claim.
• T1213, Request to Reduce Tax Deductions at Source: to ask the CRA to approve lower withholding because of deductions or credits that payroll does not account for.

Some people prefer a refund as a form of forced saving, and that is a legitimate choice. It is just worth making knowingly.

What to look at instead

The short version

A refund tells you that you prepaid more than you owed, not that you owed less. Two people with the same tax can get very different refunds, and someone whose tax fell because of the 2026 rate cut may see no change in their refund at all if their withholding fell too. The figure that shows whether you paid less tax is total tax payable.

SOURCES ON FILE

1. Canada Revenue Agency — Current year tax rates and income brackets (2026) — rates used in the illustration.
2. Canada Revenue Agency — Required tax instalments for individuals — the $3,000 ($1,800 in Quebec) test and due dates.
3. Canada Revenue Agency — Form T1213, Request to Reduce Tax Deductions at Source — reducing withholding for deductions or credits outside the TD1.
4. Canada Revenue Agency — Employers’ Guide (T4001) — TD1 rules, including requests for additional tax deductions.

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