A Practical Guide to Child Support in Alberta

Start with the support period and the right table

The Federal Child Support Tables changed on October 1, 2025. Use the 2025 tables for support from that date onward and the 2017 tables for periods from November 22, 2017 through September 30, 2025. A retroactive calculation can therefore require more than one table.

The basic table amount usually begins with the payor’s guideline income, province or territory of residence and number of children. Income above $150,000, a different province of residence or a disputed income figure requires additional care. Write down the period you are calculating before entering any number.

Build the income record before debating the result

Collect the complete personal tax return and every notice of assessment or reassessment for the relevant years. Add current year-to-date pay information. If a parent is self-employed, controls a corporation, receives dividends or benefits, has a trust interest, reports recurring capital gains, or had an unusual income event, identify the records needed to understand that feature.

Do not silently average three years or use line 15000 because it seems neutral. Record the proposed income, the source document, any requested adjustment and why it matters. A clear disagreement over one adjustment is easier to resolve than two competing calculator screenshots with no visible assumptions.

Map the parenting arrangement using actual time

Write down the regular schedule, holidays and meaningful changes over the year. If each parent has at least 40% of parenting time, section 9 applies. The two table amounts and a possible set-off are relevant, but so are increased costs and the circumstances of each parent and child.

Do not treat the parenting schedule as a bargaining chip for support. The schedule should reflect the child’s best interests; support should be calculated from the arrangement that actually exists. If the schedule is changing, record the effective date and whether the change is temporary.

Calculate section 7 expenses from the net cost

List each proposed childcare, medical, dental, education, post-secondary or extraordinary extracurricular expense. For every item, record the gross invoice, insurance, subsidies, grants, tax consequences and any contribution by the child. The remaining net cost is the useful working figure.

Then address necessity, reasonableness, advance consultation and how the cost will be shared. A complete arrangement states which expenses require consent, how quickly receipts must be exchanged, when reimbursement is due, who claims available tax benefits and how income percentages will be updated.

Choose an update mechanism before the first year ends

A durable arrangement sets an annual disclosure deadline and explains how a new amount takes effect. Alberta’s Child Support Recalculation Program can annually recalculate eligible orders, including some shared or split parenting amounts and proportionate shares of special expenses. Some situations are too complex or discretionary for the program.

If immediate change is needed, or the dispute concerns imputed income, retroactive support, eligibility of an older child or another issue the program cannot decide, legal advice may help identify whether negotiation, mediation, a consent order or court application is appropriate.

A 30-minute preparation sequence

• write the calculation period and identify the applicable table
• list each parent’s proposed guideline income and source document
• mark any income adjustment that requires explanation or more disclosure
• record the actual parenting schedule and its effective date
• complete the net section 7 expense ledger
• compare the result with the existing order or agreement
• write the one unresolved question you need advice or agreement on

• Child support legal services
• School and extracurricular expense guide