In Ontario, the basic amount of child support comes from a table set by the Federal Child Support Guidelines. Enter the paying parent’s income and the number of children to see the monthly table amount under the current 2025 tables.
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What can change the amount
- Special or extraordinary expenses (section 7) are shared on top of the table amount, in proportion to each parent’s income: child care needed for work or school, the child’s share of health and dental premiums, health costs over $100 a year that insurance doesn’t cover, some school costs, post-secondary education and extraordinary extracurricular activities.
- Shared parenting time. If each parent has the children at least 40% of the time over a year, the amount is worked out from both parents’ table amounts and the extra costs of sharing, so it’s usually different.
- Split parenting time. If each parent has one or more of the children most of the time, the parent with the higher table amount pays the difference.
- Income over $150,000, undue hardship and children 18 or older can lead a court to set a different amount.
- Tax. Child support under an order or agreement made after April 1997 isn’t taxable for the parent who gets it and can’t be deducted by the parent who pays (canada.ca).
The official table and look-up are on justice.gc.ca. For your own case, a family law lawyer or mediator can help.
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Not a government site. This is an estimate, not a decision. Always confirm with the official tables on justice.gc.ca or a family law professional.
How the table amount is worked out
The table amount depends on three things:
- The paying parent’s yearly income. This is their total income before tax, from line 15000 of their tax return, with a few possible adjustments (for example, union dues are taken off).
- The number of children the support is for. The table goes up to 6 or more.
- Where the paying parent lives. Each province and territory has its own table, and the one used is for the paying parent’s province, not the children’s. This calculator uses Ontario’s table.
The official table is set out in $1,000 income ranges. For each range, the monthly amount is a basic amount plus a percentage of the income above the bottom of the range. There is no table amount below $16,000 a year in Ontario’s table.
New tables came into force on October 1, 2025. They apply to child support from that date on. For a period before October 1, 2025, the 2017 tables apply. Ontario’s online Child Support Service uses the 2025 tables for notices issued on or after October 1, 2025.
Sample monthly amounts (Ontario, 2025 tables)
| Paying parent’s income | 1 child | 2 children | 3 children | 4 children |
|---|---|---|---|---|
| $25,000 | $184.00 | $442.00 | $476.00 | $510.00 |
| $40,000 | $334.00 | $609.00 | $828.00 | $1,008.00 |
| $50,000 | $450.00 | $744.00 | $1,003.00 | $1,216.00 |
| $60,000 | $554.00 | $911.00 | $1,182.00 | $1,412.00 |
| $75,000 | $695.00 | $1,144.00 | $1,501.00 | $1,770.00 |
| $100,000 | $932.00 | $1,517.00 | $1,984.00 | $2,366.00 |
| $125,000 | $1,131.00 | $1,829.00 | $2,388.00 | $2,846.00 |
| $150,000 | $1,327.00 | $2,135.00 | $2,781.00 | $3,310.00 |
A worked example
Say the paying parent lives in Ontario, earns $62,300 a year (line 15000), and pays support for 2 children.
- In Ontario’s table for 2 children, the line for incomes from $62,000 to $62,999 is a basic amount of $945.00 plus 1.68% of the income over $62,000.
- The income over $62,000 is $300. 1.68% of $300 is $5.04.
- $945.00 + $5.04 = $950.04 a month, or $11,400.48 a year.
Justice Canada’s simplified table shows $950 for this income. It rounds incomes to the nearest $100 and amounts to the dollar, so it can be off by less than $1 from the official table.
What can change the amount
The table amount is where child support starts. It is often not the final amount.
- Special or extraordinary expenses (section 7 of the Guidelines) are added on top and shared in proportion to each parent’s income. They include child care needed because of work, illness, disability or school; the child’s share of health and dental premiums; health costs over $100 a year that insurance doesn’t cover; some school costs; post-secondary education; and extraordinary extracurricular activities.
- Shared parenting time. If each parent has the children at least 40% of the time over a year, the amount takes into account both parents’ table amounts and the higher costs of sharing.
- Split parenting time. If each parent has one or more of the children most of the time, the amount is the difference between what each would pay the other.
- Income over $150,000. A court can use the table formula for the full income, or set a different amount for the part over $150,000.
- Undue hardship and children 18 or older (the age of majority in Ontario) can also lead to a different amount.
Who this applies to
Ontario applies the 2025 amounts to all Ontario child support matters from October 1, 2025. You can set up or update child support online with Ontario’s Child Support Service, in a written agreement, or through the court. If the paying parent lives outside Ontario, use their province’s or territory’s table in the official Justice Canada look-up.
Common mistakes
- Using take-home pay. The table uses income before tax (line 15000), not net pay.
- Using the wrong province. It’s the paying parent’s province that counts.
- Using the old tables. From October 1, 2025, the 2025 tables apply.
- Stopping at the table amount. Child care and other section 7 expenses are shared on top.
Common questions
Is child support taxable in Canada?
Not under an order or written agreement made after April 1997. The parent who receives it doesn’t pay tax on it, and the parent who pays can’t deduct it. The tables are calculated on that basis. See support payments on canada.ca.
When did the child support tables change?
The 2025 Federal Child Support Tables came into force on October 1, 2025, replacing the 2017 tables, which applied from November 22, 2017, to September 30, 2025.
How is child support calculated when income is over $150,000?
The table gives an amount at $150,000 plus a percentage of the income above it. For 2 children in Ontario that’s $2,135.00 plus 1.22% of the income over $150,000. So at $175,000 the table formula gives $2,440.00 a month. A court can use that amount or set a different one for the part over $150,000.
Does 50/50 parenting time change child support?
Yes. When each parent has the children at least 40% of the time over a year, the calculation looks at both parents’ table amounts, the higher costs of shared parenting and the needs, means and circumstances of each parent and child. The result is usually different from the table amount alone.
Where can I check the official amount?
Justice Canada has an online look-up and simplified tables for each province. The legal version is Schedule I of the Federal Child Support Guidelines.
