Alberta Canadian Child Support Calculator

Alberta child support uses the Federal Child Support Guidelines (SOR/97-175) table lookup system based on the paying parent's gross annual income and number of children. The Guidelines provide province-specific tables that account for Alberta's tax rates—for example, a parent earning $75,000 pays approximately $700 per month for one child, while $150,000 income yields $1,318 monthly. Income is determined from Line 15000 of the T1 tax return, representing total gross income before deductions.

Section 7 of the Federal Child Support Guidelines covers additional child-related costs beyond basic table support, including childcare expenses for employment or education, medical and dental insurance premiums, health costs exceeding $100 annually (orthodontics, therapy, prescriptions), extraordinary educational expenses, and extracurricular activities. Parents share these costs proportionally based on their respective incomes—if one parent earns 60% of combined income, they pay 60% of approved Section 7 expenses.

When each parent has at least 40% parenting time annually, Section 9 of the Federal Child Support Guidelines applies a set-off calculation. Courts determine what each parent would pay if the other had primary care, then subtract the lower amount from the higher. For example, if Parent A's table amount is $800 and Parent B's is $500, Parent A pays the $300 difference. Courts also consider increased costs of shared arrangements and each family's specific circumstances.

Alberta child support calculations use gross annual income from Line 15000 of the most recent T1 tax return, which includes employment income, self-employment earnings, investment income, rental income, and government benefits. The only standard deductions are union or professional dues. Courts may average three years of income for fluctuating earnings or impute higher income if the reported amount appears artificially low.

Alberta child support orders can be varied when there is a material change in circumstances, such as significant income changes exceeding 10-15%, job loss, or alterations to parenting arrangements. Applications are filed with the Court of King's Bench or Provincial Court, with filing fees ranging from $50-$200. Alternatively, Alberta's Child Support Recalculation Program can administratively adjust amounts based on updated income without requiring a court application.

While Alberta's age of majority is 18, child support frequently extends beyond this age under both the Divorce Act and Alberta Family Law Act when children pursue post-secondary education. Under the provincial Guidelines, support can continue until age 22 for full-time students. Courts apply the 'Farden factors' to assess eligibility, including academic performance, reasonable career plans, and the child's contribution to their own expenses through employment or student loans.

For incomes exceeding $150,000, Section 4 of the Federal Child Support Guidelines grants courts discretion. The table amount applies to the first $150,000 ($1,318 monthly for one child in Alberta), plus courts may add a percentage on income above that threshold—typically 0.84% per child. Courts consider whether the full table amount would exceed the children's reasonable needs or effectively function as spousal support or wealth transfer.

Extracurricular activities may qualify as Section 7 extraordinary expenses if they meet two tests: they must be necessary for the child's best interests, and they must be reasonable given both parents' financial circumstances. Courts examine the family's pre-separation spending patterns—activities the child participated in before separation are more likely to be approved. Parents share approved costs proportionally based on their respective incomes.