An experienced child support lawyer Calgary parents rely on can ensure your children receive the financial support they deserve. At Cunningham Family Law, we calculate, negotiate and enforce child support under the Federal Child Support Guidelines, including complex income cases involving business owners, self-employed individuals and parents with variable income.
How Child Support Works in Alberta
Child support in Alberta is governed by the Federal Child Support Guidelines and the Divorce Act (Canada) (for married parents) or the Family Law Act (Alberta) (for unmarried parents). Support is based on:
- The payor's income (factoring in spousal support)
- The number of children
- Parenting or custody arrangements
- Special or extraordinary expenses (Section 7)
Child support is the right of the child (not the parents) and cannot be waived.
Base (Table) Child Support
Base child support is determined using the Federal Child Support Tables. It covers:
- Food
- Clothing
- Basic shelter
- Transportation
- Everyday expenses
The amount depends on:
- The payor's Guideline Income (where, sometimes property division is relevant)
- The number of children
- The province of residence
In shared parenting arrangements (40%+ time with each parent), a set-off calculation is generally used.

Section 7 Expenses (Special or Extraordinary Costs)
Section 7 expenses are additional costs that go beyond day-to-day needs. These may include:
- Childcare
- Medical and dental expenses
- Health insurance premiums
- Extracurricular activities
- Post-secondary education
- Tutoring or special educational needs
These expenses are typically shared proportionate to each parent's income.

Determining Income for Child Support
Accurate income determination is essential. For employees, this is straightforward. For business owners, professionals, or individuals with variable income, it can be more complex.
Income may include:
- Salary
- Dividends
- Bonuses
- Commissions
- Retained earnings
- Corporate benefits
- Shareholder loans
- Investment income
- Rental income
The Guidelines allow the court to impute income if a parent is under-employed, hiding income, or using corporate structures to reduce reported earnings.
Your corporate and tax background gives you a significant advantage in these cases.
Child Support for Business Owners and Professionals
When a parent owns a business or professional corporation, determining income may require:
- Reviewing corporate financial statements
- Normalizing income
- Identifying personal expenses paid through the corporation
- Assessing retained earnings
- Evaluating shareholder loans
- Reviewing dividends and salary choices
A detailed analysis ensures child support reflects true financial capacity.
If a parent earns more than $150,000 per year, the Federal Child Support Guidelines apply differently. Read our guide on child support for high income earners in Calgary.
For a quick estimate using the current federal tables, try our free Alberta child support calculator. It runs entirely in your browser and also shows the spousal support range.
Shared, Split, and Primary Parenting Arrangements
Parenting arrangements may affect how support is calculated:
Primary Parenting
One parent has the child more than 60% of the time. → The other parent pays full table support.
Shared Parenting (40%+ each)
Support is usually calculated using the set-off method. → Each parent's table amount is calculated, and the difference is paid.
Split Parenting
Each parent has at least one child primarily in their care. → Each pays table support for the child(ren) in the other's care.

Retroactive Child Support
Retroactive support may be ordered when:
- A parent failed to disclose income increases
- Support was based on outdated income
- A parent avoided or delayed payment
- A child's needs were not met
Courts can order support going back several years, depending on the circumstances.

Changing (Varying) Child Support
Child support can be varied when there is a material change in circumstances, such as:
- Income changes
- Parenting schedule changes
- New Section 7 expenses
- Employment changes
- Health issues
Variations can be made through negotiation, mediation, arbitration, or court.
Enforcement Through the Maintenance Enforcement Program (MEP)
MEP can enforce child support orders and separation agreements by:
- Garnishing wages
- Seizing bank accounts
- Suspending driver's licences
- Intercepting tax refunds
- Registering liens
- Initiating court enforcement
MEP is a powerful tool when a parent is not paying support.
Benefits and Limitations of Alberta's Child Support Framework
Benefits:
- Predictable and standardized
- Ensures children's needs are met
- Adjusts with income changes
- Supports fairness in shared parenting
- Provides strong enforcement mechanisms
Limitations:
- Complex for business owners or variable income earners
- Section 7 expenses can lead to disputes
- Retroactive claims can be costly
- Imputing income may require expert evidence
- Annual disclosure can be time-consuming
How Child Support Is Resolved Step-by-Step
Determine Parenting Arrangement
This affects the calculation method.
Establish Guideline Income
Using tax returns, financial statements, and supporting documents.

Calculate Base Child Support
Using the Tables in the Federal Child Support Guidelines.

Identify Section 7 Expenses
Determine which expenses qualify and how they should be shared.
Draft a Support Agreement or Order
Ensuring clarity, enforceability, and long-term stability.

Review Annually (Unless Otherwise Agreed)
Income updates ensure support remains fair and accurate.
Serving Calgary and Surrounding Communities
Child support services are available to clients across:
- Calgary
- Airdrie
- Cochrane
- Okotoks
- Chestermere
- High River
- Strathmore
- Rocky View County
- Foothills County
- And other Alberta communities
Protect Your Child's Future With Clear, Reliable Support Arrangements
Child support in Alberta is calculated based on the Federal Child Support Guidelines using the paying parent's gross annual income. However, determining income is not always straightforward, especially when a parent owns a business, earns commissions, receives bonuses or has income from multiple sources. We ensure all income is properly disclosed and calculated.
With informed, strategic advice, you can move forward with clarity, confidence, and a support arrangement that works for your family.
Book a Confidential Consultation Today
Call (403) 804-0497 or send us a message. We respond within 4 hours on business days.
Speak To A LawyerChild Support in Alberta FAQs
How is child support calculated in Alberta?
Child support is calculated using the Federal Child Support Guidelines, which consider the payor's Guideline Income, the number of children, and the parenting schedule. The calculation is standardized, but income determination can be complication in complex divorce or for business owners or individuals with variable earnings. Our full guide: how child support is calculated in Alberta.
What is the difference between base child support and Section 7 expenses?
Base (table) child support covers day-to-day needs such as food, clothing, and basic shelter.
Section 7 expenses are additional costs like childcare, medical expenses, extracurricular activities, and post-secondary education. These are usually shared proportionate to each parent's income.
What counts as "Guideline Income"?
Guideline Income is based on Line 15000 of your tax return, adjusted for factors such as:
- Dividends and shareholder loans
- Corporate benefits
- Bonuses and commissions
- Retained earnings
- Rental or investment income
- Non-recurring income
For business owners, a detailed financial review may be required to determine true income.
How does shared parenting affect child support?
If each parent has the child 40% or more of the time, support is calculated using the set-off method. Each parent's table amount is determined, and the difference is paid by the higher-income parent. Our full guide: child support in shared (50/50) parenting.
What if one parent is under-employed or hiding income?
Courts can impute income when a parent is intentionally under-employed, failing to disclose income, or using corporate structures to reduce reported earnings. This ensures support reflects actual financial capacity.
How are Section 7 expenses divided?
Section 7 expenses are shared based on each parent's proportionate income. For example, if one parent earns 70% of the combined income, they typically pay 70% of Section 7 costs. Our full guide: Section 7 special expenses.
Can child support be changed after an agreement or order is made?
Yes. Child support can be varied when there is a material change in circumstances, such as income changes, new Section 7 expenses, or changes in the parenting schedule. Annual income updates are recommended.
What is retroactive child support?
Retroactive support may be ordered when a parent:
- Failed to disclose income increases
- Paid less than required
- Delayed updating support
- Avoided financial disclosure
Courts can order support going back several years depending on the circumstance. Our full guide: retroactive child support in Alberta.
What happens if a parent refuses to pay child support?
The Maintenance Enforcement Program (MEP) can enforce payment by:
- Garnishing wages
- Seizing bank accounts
- Suspending licences
- Registering liens
- Intercepting tax refunds
MEP is a powerful enforcement tool when support is unpaid.
Do unmarried parents follow the same child support rules?
Yes. Child support for unmarried parents is governed by Alberta's Family Law Act, but the calculation method is the same as for married parents under the Federal Guidelines.
How long does child support last?
Support typically continues until a child is:
- 18 and independent, or
- Over 18 but still dependent due to school, disability, or other factors
Post-secondary support is common and often includes tuition, books, and living expenses.
Can parents agree to a different amount than the Guidelines?
Parents can negotiate support, but agreements must be consistent with the child's best interests. Courts may set aside agreements that significantly deviate from the Guidelines without justification.
What documents are needed to calculate child support?
Common documents include:
- Tax returns and Notices of Assessment
- Pay stubs
- Corporate financial statements
- Investment and rental income records
- Childcare and medical receipts
- Post-secondary documentation
Complete disclosure ensures accurate and enforceable support.
Do I need a lawyer to resolve child support?
Not necessarily. Child support can be resolved through negotiation, mediation, arbitration, or court. Legal guidance ensures calculations are accurate, agreements are enforceable, and your child's needs are fully addressed.
How do I start the child support process in Calgary?
The first step is a consultation to review income, parenting arrangements, Section 7 expenses, and your goals. From there, a clear strategy is developed to ensure your child's financial needs are met and your rights are protected.
Content posted on our website is not legal advice. Please contact us for legal advice specific to your unique circumstances.
Protect Your Children's Future With Skilled Counsel
Call (403) 804-0497 or send us a message. We respond within 4 hours on business days.
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