Child Support Calculator

Personal use. (Click on the checkbox to switch to professional use)

1. Calculation

Use this free calculator to calculate child support according to the Canadian Child Support Guidelines. Simply enter your information in the form below and click the "calculate" button to view the support calculation.

To calculate spousal support & child support together, use the child & spousal support calculator.

For more information on how to correctly calculate child support and the relevant legal issues, visit the child support help center.

Saved Calculations

Save & edit calculations

Calculation Title

Name your calculation something descriptive (i.e. "High Income Support" or "Shared Parenting Support").

Create a free account to save your calculations

Options

Calculation settings

Upgrade to customize your support calculation settings using the options below.

Calculate Spousal Support?

To calculate spousal support, use the spousal support calculator.

Tax Year

2025

The tax year used to calculate child support (if applicable), taxes and benefits.

2. Background

Some background information is required to calculate support. For example, support payments can vary significantly by province. If you wish to generate an anonymous report, you may use a pseudonym or placeholder name.

You

Age 0 / ? / NU / S

Nunavut

The province or territory this person primarily resides in.

Residence

Nunavut

*Required. The province or territory this person primarily resides in. Support varies by province.

First name

*Real name optional. Feel free to use a pseudonym. Used to customize your report.

Last name

*Optional. Used to customize your report.

Gender

Prefer not to respond

*Optional. Used to customize your report.

Date of Birth

*Optional. Age is a factor in calculating tax and spousal support, but not child support.

+ Show more options forYou
(new partner, northern/rural resident, disability)

New Partner?

Remarried or new common law-partner? This can affect tax calculations.

Northern Resident

Eligible for Northern Residents tax deduction? This can affect tax calculations.

Rural Resident

Eligible for Climate Action Supplement for residents of rural and small communities?

Person Has Disability

Eligible for Disability Tax Credit and other disability-related benefits or credits?

Ex

Age 0 / ? / NU / S

Nunavut

The province or territory this person primarily resides in.

Residence

Nunavut

*Required. The province or territory this person primarily resides in. Support varies by province.

First name

*Real name optional. Feel free to use a pseudonym. Used to customize your report.

Last name

*Optional. Used to customize your report.

Gender

Prefer not to respond

*Optional. Used to customize your report.

Date of Birth

*Optional. Age is a factor in calculating tax and spousal support, but not child support.

+ Show more options forEx
(new partner, northern/rural resident, disability)

New Partner?

Remarried or new common law-partner? This can affect tax calculations.

Northern Resident

Eligible for Northern Residents tax deduction? This can affect tax calculations.

Rural Resident

Eligible for Climate Action Supplement for residents of rural and small communities?

Person Has Disability

Eligible for Disability Tax Credit and other disability-related benefits or credits?

3. Children

Dependent children of the relationship are listed below. Select the appropriate parenting relationship and add any special child-related expenses.

Children is required

If the child spends 60% or more time with a parent, that parent is the "primary" parent. If the child spends more than 40% of time with both parents, select "shared" parenting.

Special Child-Related Expenses (s. 7 Expenses)

Enter the total annual amount of all special child-related expenses (including tax), such as private school or tutoring, daycare, orthodontics and similar out-of-pocket costs.

Total Expenses: $0

These expenses are apportioned based on the income of each parent, adjusted for child support payments.

4. Income

Enter all recurring sources of income for both you and your ex. Include both taxable and non-taxable income. For example, include: employment, pension, self-employment, and dividend income. For many people, this information can be copied from the "Total Income" page of their last T1 tax return.

Your Income

T4 Employment

Employment income for which you receive a T4. Reported on line 10100 of your tax return, less any amounts included in lines 10105, 10120 or 10130 which should be entered separately.

Total Income: $0*
*Line 15000 on T1 Tax Return

Adjust Guideline Income

Adjustments to Line 15000 Total Income may be required to calculate support. Schedule III of the Child Support Guidelines lists most of the adjustments. These include deducting employment-related expenses, business losses, capital gains (the calculator handles this automatically) and other adjustments listed in the dropdown below. Visit the help centre for more information.

No Adjustments Entered

Total Adjustments: $0

Guideline Income: $0

Claim Undue Hardship

Enter undue hardship claims below. For more information on when and how to claim undue hardship, visit the help centre.

Undue Hardship Claim: $0

Ex's Income

T4 Employment

Employment income for which you receive a T4. Reported on line 10100 of your tax return, less any amounts included in lines 10105, 10120 or 10130 which should be entered separately.

Total Income: $0*
*Line 15000 on T1 Tax Return

Adjust Guideline Income

No Adjustments Entered

Total Adjustments: $0

Guideline Income: $0

Claim Undue Hardship

Enter undue hardship claims below. For more information on when and how to claim undue hardship, visit the help centre.

Undue Hardship Claim: $0

Once all sources of income are entered for both parties, review estimated tax credits and benefits below.

5. Tax & Benefits

The calculator automatically calculates the credits and benefits you and your spouse are likely to receive. However, you may need to enter additional credits, deductions or benefits, or override automatically calculated benefits.

Add or override any tax amounts that are not automatically calculated using the form below.

Your Tax Credits & Benefits

Credits 0
Deductions 0
Benefits 0

Click on a credit for more information.