Child Support
Child Support When the Payor Is Self-Employed in BC
By SiLaw Group Family LawyersPublished Nov 13, 2026 · 6 min read
A self-employed parent's child support income is not simply the net business income on the tax return. The Federal Child Support Guidelines start from Total income on the T1 General, apply Schedule III adjustments, allow a three-year look where income fluctuates, and let the court add back unreasonable deductions.
SiLaw Group Family Lawyers acts for self-employed payors and for recipients who suspect the reported number is low. This post explains how the income figure is built for a self-employed parent in British Columbia. For what happens once income is settled, see how child support is calculated in BC and our child support services.
Why Does Self-Employment Change the Conversation?
The table amount under section 3(1) of the Federal Child Support Guidelines turns on two inputs: the number of children and the income of the parent who pays. For an employee, the income input is usually close to the T4. For a self-employed parent, net income reflects choices about what to deduct, when to invoice, and how much to leave in the business, and choices that are proper for tax are not automatically accepted for child support.
Section 15(1) of the Guidelines says a spouse's annual income is determined by the court in accordance with sections 16 to 20. Section 15(2) adds a useful pressure valve: where both parents agree in writing on a parent's annual income, the court may accept that figure if it considers the amount reasonable having regard to the income information provided under section 21.
Step 1 - Where Does the Calculation Start?
Section 16 of the Federal Child Support Guidelines determines annual income using the sources of income under the heading "Total income" in the T1 General form issued by the Canada Revenue Agency, adjusted in accordance with Schedule III. For a self-employed parent, several Schedule III adjustments do real work:
- Payments to family and other non-arm's-length people. Item 9 of Schedule III says that where net self-employment income was reduced by salaries, benefits, wages, management fees or other payments to people the parent does not deal with at arm's length, that amount is included, unless the parent establishes the payments were necessary to earn the self-employment income and were reasonable in the circumstances.
- Dividends and capital gains. Item 5 replaces the taxable amount of dividends from taxable Canadian corporations with the actual dividends received. Item 6 replaces taxable capital gains with the actual gains in excess of actual capital losses for the year.
- Business investment losses and carrying charges. Item 7 deducts actual business investment losses, and item 8 deducts carrying charges and interest expenses that would be deductible under the Income Tax Act.
- Capital cost allowance on real property. Item 11 includes the parent's deduction for allowable capital cost allowance on real property, so that write-off is added back.
Step 2 - Does One Year Tell the Truth?
Section 17(1) of the Federal Child Support Guidelines deals with uneven income. If the court is of the opinion that a section 16 determination would not be the fairest determination of a parent's income, it may have regard to the parent's income over the last three years and determine an amount that is fair and reasonable in light of any pattern of income, fluctuation in income, or receipt of a non-recurring amount during those years.
Section 17(2) of the Guidelines deals with the opposite problem, a non-recurring capital or business investment loss, where the court may decline to apply items 6 and 7 of Schedule III and instead adjust the loss to an amount it considers appropriate.
Step 3 - Are the Deductions Reasonable for Support Purposes?
Section 19(1) of the Federal Child Support Guidelines lets the court impute income in a list of circumstances, and paragraph (g) is the one that matters here: the parent unreasonably deducts expenses from income. Section 19(2) then states the key rule. The reasonableness of an expense deduction is not solely governed by whether the deduction is permitted under the Income Tax Act. A vehicle, home office, travel or meal expense can be allowable for tax and still be added back for child support, and deductions that mix personal benefit with business purpose draw the closest attention.
Two neighbouring grounds in section 19(1) of the Guidelines also come up with self-employment: income that appears to have been diverted in a way that affects support (paragraph (d)), and failure to provide income information when legally required (paragraph (f)). Where the business is incorporated, section 18 of the Guidelines lets the court look through to corporate pre-tax income. Our page on imputing income for child support covers the full list and the corporate rules, and our page on dividing a business on separation covers the property side.
What Documents Must a Self-Employed Payor Produce?
Section 21(1) of the Federal Child Support Guidelines lists the income information a parent must produce. Every parent produces personal tax returns and every notice of assessment and reassessment for the three most recent taxation years. A self-employed parent must add, for the same three years, the financial statements of the business or professional practice (other than a partnership) and a statement showing a breakdown of all salaries, wages, management fees or other payments or benefits paid to or on behalf of persons or corporations with whom the parent does not deal at arm's length. A partner must produce confirmation of income and draw from, and capital in, the partnership for its three most recent taxation years.
Section 21(2) of the Guidelines gives a parent served with an application 30 days to provide these documents if they live in Canada or the United States, and 60 days elsewhere. The consequences of silence are set out in sections 22 to 24 of the Guidelines: the other parent can set the matter down for hearing or seek an order, the court can award costs that fully compensate the other side, and the court can draw an adverse inference and impute income in the amount it considers appropriate. Our Form F8 financial disclosure guide shows where these documents go, and our post on the importance of disclosure in family law explains why early disclosure usually saves money.
How Is the Number Kept Current From Year to Year?
Section 25(1) of the Federal Child Support Guidelines lets the recipient make a written request, not more than once a year, for the section 21 documents for any of the three most recent taxation years not previously provided, along with current information about section 7 expenses and any undue hardship circumstances. The documents are due within 30 days for a parent in Canada or the United States under section 25(5), and section 25(8) makes any clause in an order or agreement that tries to limit this obligation unenforceable. For a self-employed payor, that means the financial statements and the non-arm's-length breakdown every year, not just the return.
Parents who want to avoid an annual argument can put the method in writing. A separation agreement can fix the exchange date, name the documents, and record the agreed income under section 15(2) of the Guidelines, and family mediation is well suited to settling an income figure once an accountant has reconciled the statements. Once the income is settled, our BC child support table lookup takes you to the official Department of Justice look-up for the exact table amount. Use the 2025 look-up for any period from October 1, 2025 onward.
What Should Each Side Do Now?
If you receive support, ask for the business financial statements and the non-arm's-length breakdown, not just the T1. If you pay support and run a business, keep receipts that show the business purpose of each deduction and be ready to explain any payment to a family member. Both sides should expect the three-year history to matter.
Talk to a Child Support Lawyer About Self-Employment Income
Whether you are the parent with the business or the parent reading its statements, get the income figure right before the table figure is argued about. The first 30 minutes with SiLaw Group are free, by phone, video, or in person in South Surrey. Call (778) 381-9977 or Book Now for a Free Consultation.
This post is legal information, not legal advice. Rules and fees are current to the date of writing and can change.
About SiLaw Group
SiLaw Group Family Lawyers is a Surrey, BC firm practising family law and mediation. Founder Sandy Sihota is an accredited Family Law Mediator, Arbitrator and Parenting Coordinator (Law Society of BC). Articles are legal information, not legal advice.