2025 Ontario Child Support Calculator

How the 2025 Ontario Child Support Calculator Works

The Ontario Child Support Guidelines (OCSG) determine how much child support should be paid based on the parents' incomes, expenses, and custody arrangements. The 2025 version of the guidelines includes updates to the income thresholds and calculation methods.

Key Components of Child Support

Child support payments are calculated based on several factors:

• Gross Income: The total income of each parent before taxes and deductions.
• Net Income: The income after taxes and deductions, used to calculate the support amount.
• Custody Arrangements: Whether the child lives with one parent full-time, split custody, or another arrangement.
• Child Expenses: Costs associated with raising the child, such as child care, education, and medical expenses.

How the Calculator Works

The calculator uses the OCSG formula to determine the monthly child support payment. Here's a simplified breakdown of the process:

1. Enter the gross income of both parents.
2. Select the custody arrangement (full-time, split, or other).
3. Enter any additional child expenses.
4. The calculator applies the OCSG formula to compute the monthly support amount.

Child Support Formula

The Ontario Child Support Guidelines use a formula to calculate the monthly child support payment. The basic formula is:

The percentage applied to the net income depends on the parents' combined income and the number of children. For example:

• If the combined income is between $50,000 and $100,000, the percentage is 17%.
• If the combined income is between $100,000 and $150,000, the percentage is 20%.

The child expenses are subtracted from the calculated amount to determine the final monthly payment.

Calculation Examples

Here are two examples of how the calculator works:

Example 1: Single Parent with One Child

Parent A earns $60,000 per year. There are no additional child expenses.

The calculator would:

1. Calculate the net income after taxes and deductions.
2. Apply the 17% percentage based on the income level.
3. Determine the monthly child support payment.

Example 2: Two Parents with Two Children

Parent A earns $80,000 per year, and Parent B earns $70,000 per year. There are $200 in additional child expenses.

The calculator would:

1. Calculate the combined net income of both parents.
2. Apply the 20% percentage based on the combined income level.
3. Subtract the additional child expenses to determine the final monthly payment.