How the Canada Child Benefit Is Calculated

Why does one family with a toddler get $8,157 a year while a neighbour with the same toddler gets $5,583.59? The answer is one short formula. The Canada Child Benefit, or CCB, starts at a fixed maximum for each child. It then shrinks by a set percentage of family income above a threshold. This guide walks through that formula with the official figures for July 2026 to June 2027.

What Formula Does the CRA Use for the CCB?

The CRA adds up a maximum amount for each child, then subtracts a reduction based on family income. The result is your yearly benefit, paid in 12 monthly parts.

In short, the formula is: annual CCB equals the sum of the child maximums minus the income reduction. The reduction is zero at low incomes and grows as income rises. Nothing else changes the base federal amount, apart from shared custody and the disability add-on covered later.

The CCB is tax-free, according to the CRA. You do not add it to your income on your return. That makes it different from a tax credit that lowers the tax you owe. For a comparison with the American approach, see our guide on how the U.S. child tax credit works.

Three inputs drive the whole result. They are the ages of your children, the number of children, and your adjusted family net income from the prior year. Each input plays a separate role, so it helps to look at them one at a time.

How Much Does Each Child Add Before Any Reduction?

For July 2026 to June 2027, each child under 6 adds $8,157 a year, or $679.75 a month. Each child aged 6 to 17 adds $6,883 a year, or $573.58 a month.

Add the amounts together for your family. Two children, one aged 3 and one aged 7, give a starting maximum of $15,040 a year. Three children under 6 would start at $24,471.

Age matters month by month. A child who turns 6 moves from the higher rate to the lower one, so the gap between the two rates is $1,274 a year. The benefit stops once a child turns 18. These amounts are indexed to inflation and change every July, so always check the benefit year.

Where Do the Income Thresholds Start to Reduce the Benefit?

The reduction starts when adjusted family net income passes $38,237. A second, gentler phase begins at $82,847. Both thresholds apply to the July 2026 to June 2027 benefit year.

Between the two thresholds, the CRA takes a percentage of every dollar above $38,237. Above $82,847, it takes a fixed amount plus a smaller percentage of income above $82,847. The fixed amount equals the full phase-one reduction, so the two phases join smoothly.

The rate depends on how many children you have, not on their ages. The reduction also works like an extra tax rate on each new dollar. A family with two children loses $135 of benefit for every extra $1,000 in phase one. Our guide on marginal vs effective tax rates explains why that matters for raises.

What Does a $75,000 Family With a Toddler Actually Receive?

A family with $75,000 of AFNI and one child under 6 receives $5,583.59 a year, or about $465.30 a month, in July 2026 to June 2027.

This is the same family the Canada Child Benefit Calculator page uses as its worked example. Here is the math with the current CRA figures:

• Income above the first threshold: $75,000 minus $38,237 equals $36,763.
• Reduction at 7%: $36,763 times 0.07 equals $2,573.41.
• Annual CCB: $8,157 minus $2,573.41 equals $5,583.59.

The calculator page shows $5,092.06 for this family. That older result uses the July 2024 to June 2025 maximum and threshold, so the current year pays more.

Two Children at a Modest Income

Take a single parent with $42,000 of AFNI, one child aged 3, and one aged 7. The maximum is $15,040. The reduction is 13.5% of $3,763, or $508.01, which leaves $14,531.99 a year, about $1,211 a month.

One Child Above the Second Threshold

At $100,000 of AFNI with one child under 6, the second phase applies. The reduction is $3,123 plus 3.2% of $17,153, which totals $3,671.90. The benefit is $4,485.10 a year, or $373.76 a month.

Why Does Last Year’s Income Set This Year’s Payments?

The CRA bases each July to June benefit year on the family net income from the previous calendar year. Payments from July 2026 to June 2027 use your 2025 AFNI.

AFNI is the combined net income of you and your spouse or common-law partner. The CRA adjusts it for a few items, such as certain registered disability savings plan amounts. Your own gross pay is not the right number to use.

This lag explains a common surprise. A parent who starts leave in 2026 does not see a higher CCB until July 2027, when 2026 income becomes the base. The benefit is recalculated every July from the returns you both filed.

Filing is not optional. The CRA states that you and your partner must each file a return every year, even with no income. A missing return from either partner can pause the payments.

How Do Shared Custody and a Disability Change the Amount?

With shared custody, each parent gets 50% of what they would receive with full custody, based on their own AFNI. A child eligible for the disability tax credit adds up to $3,480 a year.

The CRA treats custody as shared when the child lives with each parent at least 40% of the time, or on a roughly equal basis at different addresses. Both parents should apply. For the $75,000 family above, a shared-custody parent at that income would get $2,791.80 a year.

The child disability benefit is paid with the CCB. The CRA lists it at up to $3,480 a year, or $290 a month, for each eligible child in this benefit year.

Very small amounts are paid differently. When the monthly figure works out under $20, the CRA pays one lump sum for the whole year instead. Provincial and territorial programs may add their own payments on top, with separate rules.

FAQs About the Canada Child Benefit

Sources

This article explains the federal CCB formula with CRA figures for the July 2026 to June 2027 benefit year. It is general education, not tax or legal advice, and provincial programs are not covered. Reviewed for accuracy by Prof. Dr. Khalil Mudassar, PhD. Last updated September 27, 2026.