Child Support and Shared Parenting: How It’s Calculated When Parenting Time Is Equal

When parents share parenting equally, child support can become one of the most confusing parts of a separation. Many assume that if the parenting time is split 50/50, no support is required—but that’s not always the case. In Alberta, even with shared parenting, both parents have financial obligations to contribute to their child’s upbringing.

In this guide, we will break down how child support and shared parenting work together, how the numbers are calculated, and how a family lawyer can help you create a fair and stable arrangement.

What Shared Parenting Means in Alberta

Under Alberta’s Child Support Guidelines, shared parenting (also called shared parenting) applies when each parent has the child for 40% or more of the year. This threshold considers the total parenting time, including weekdays, weekends, holidays, long weekends, and overnights.

While many people use the terms shared parenting, equal parenting, and 50/50 custody interchangeably, the courts take a much more nuanced approach. As highlighted in recent case law, equal parenting time does not automatically mean equal financial responsibility.

Alberta’s Court of Queen’s Bench not only reviews parenting schedules, but also:

• Each parent’s income
• Where the child lives and the associated costs
• The practical realities of how parenting responsibilities are shared
• The overall ability of each parent to meet the child’s needs

Even in a fully equal parenting arrangement, the goal remains the same—ensuring the child receives consistent, appropriate financial support in both homes.

How Child Support is Calculated in Shared Parenting Situations

In a shared parenting arrangement, child support is not cancelled out. Rather, the Alberta courts often use the set-off method, which considers both parents’ incomes. To calculate the total amount of child support, the course:

• Calculate each parent’s base child support using the Federal Child Support Tables, based on their respective incomes and the number of children.
• Subtract the lower amount from the higher one.
• The parent with the higher income pays the difference to the other parent.

For example, if one parent is required to pay $1000 per month based on their income, and the other parent is required to pay $600 per month, the set-off amount is $400. Therefore, the higher-earning parent pays the other parent $400 per month in child support.

However, this is not the only approach. In fact, the set-off method is the starting point, not the ending point. The Federal Child Support Guidelines set out in Section 9 how child support is governed in shared parenting.

Section 9 – Shared Parenting (Federal Child Support Guidelines)

Applies when:

• Each parent has the child at least 40% of the time, measured in hours or days (courts favour a practical, common-sense approach).
• Once the 40% threshold is met, Section 9 applies instead of the strict set-off under Section 3.

Section 9 Factors

(a) The amounts for each parent
This is the guideline amount for each parent based on their income. While many assume Section 9 is a simple “set-off” where the higher-income parent pays the difference, courts emphasize that the set-off is only the starting point, not the final calculation.

(b) The increased costs of shared parenting arrangements
Shared parenting often incurs higher costs because each household must maintain:

• A full bedroom setup for the child
• Clothing and duplicate items
• Food, transportation, activity, and entertainment costs
• Potential childcare costs in each home (if needed)
• Increased fixed costs, such as larger housing and utilities

Courts examine whether both parents truly incur these duplicate costs and whether the shared schedule genuinely creates additional expenses.

(c) The conditions, means, needs, and other circumstances of each parent and of the child
This factor involves a broader assessment, including:

• Each parent’s ability to meet the child’s needs
• Household budgets
• Whether one parent bears disproportionate primary costs (e.g., medical, child care, extracurriculars)
• The standard of living in each home
• The child’s well-being if support is insufficient to maintain parity
• Any special needs (e.g., therapies, disability-related expenses)

This is often where courts adjust the initial set-off to ensure the child’s needs are met in both homes. A thorough analysis of means and needs is essential to determine the appropriate child support in a shared parenting arrangement.

Considering Section 7 Expenses

Section 7 expenses are considered special or extraordinary expenses that go beyond the basic Federal Child Support Table amount. These can include:

• Childcare, daycare, or after-school programs
• Medical or dental expenses not covered by insurance
• Educational costs, school fees, tutoring, or post-secondary expenses
• Extracurricular activities such as sports, music, or camps

These expenses are typically divided based on each parent’s income rather than their parenting time. This approach ensures fairness while supporting the child’s development, opportunities, and well-being.

When Income or Living Situations Change

Child support arrangements are not set in stone. They may need to be updated if:

• A parent’s income changes significantly
• The parenting schedule shifts
• A child’s needs evolve
• New Section 7 expenses arise

In shared-parenting situations, these changes can quickly affect child support calculations. A family lawyer with Jones Divorce & Family Law can help you file a variation application and ensure your agreement remains accurate and compliant with Alberta’s Child Support Guidelines.

Why Legal Guidance Matters

Even in cooperative co-parenting arrangements, child support and shared parenting can become complex. Miscalculations, informal agreements, or misunderstandings about equal parenting can lead to conflict or enforcement challenges down the road.

Working with a family lawyer ensures:

• Proper calculation of support using accurate financial disclosure
• A parenting plan that aligns with your child’s best interests
• Agreements that are enforceable and built to last
• Reduced conflict through clear communication and structured decision-making

At Jones Divorce & Family Law, our lawyers are specialists in both child support and parenting coordination, enabling us to support families as they navigate the financial and relational aspects of co-parenting. Whether you need help calculating support, adjusting an existing order, or resolving disputes through parenting coordination, our team provides strategic, compassionate guidance.

Get Support From Alberta Child Support and Parenting Coordination Specialists

If you’re navigating shared parenting and child support calculations, you don’t have to do it alone. Our team at Jones Divorce & Family Law can help you understand your rights, negotiate a fair solution, and protect your child’s best interests.

For help navigating your separation and parenting arrangement, contact Jones Divorce & Family Law.