(905) 441 0770 allen@allenehlert.com

Mortgage Application: Paying Support

by | December 14, 2025

In Canada, paying child and spousal support impacts the income on your T1 which has direct implications on your mortgage application.

Let’s say Pat makes $100,000 a year and pays $2000 a month in child support payments and $2000 a month in spousal support payments. What would be the impact on taxes, income, and any mortgage application?

In Canada, child support and spousal support payments have different tax treatments on the T1 General Income Tax and Benefit Return:

  • Child Support Payments: These payments are not deductible by the payer and are not included as taxable income by the recipient.
  • Spousal Support Payments: These payments are deductible by the payer and must be included as taxable income by the recipient.

Pat’s Income Tax Situation

Income

Annual Income: $100,000
Monthly Child Support Payments: $2,000
Monthly Spousal Support Payments: $2,000

Annual Support Payments Calculation

Annual Child Support Payments: $2,000 × 12 = $24,000 (not deductible)
Annual Spousal Support Payments: $2,000 × 12 = $24,000 (deductible)

Impact on Pat’s T1

Line 15000 (Total Income): $100,000

Deductible Spousal Support Payments:

Pat will claim the $24,000 of spousal support payments as a deduction.
This deduction is reported on line 22000 (Support payments made).

Line 23600 (Net Income):

Pat’s net income will be calculated as follows:
Net Income = Total Income – Deductible Spousal Support Payments
Net Income = $100,000 – $24,000 = $76,000

Summary of Pat’s T1

Line 15000 (Total Income): $100,000
Line 22000 (Deductible Support Payments): $24,000 (spousal support)
Line 23600 (Net Income): $76,000
Pat’s child support payments do not impact taxable income as they are not deductible. Only the spousal support payments reduce his taxable income on his T1 return.

Support Payments: T1 Return

On what line of Bob’s T1 return in Canada will it show the support payments Pat made?
On Pat’s T1 General Income Tax and Benefit Return in Canada, the support payments made will be reported on Line 22000 (Support payments made). This line is used to report the total amount of deductible support payments (such as spousal support) made during the tax year.

Example of Pat’s T1 Return

Total Income (Line 15000): $100,000
Support Payments Made (Line 22000): $24,000 (spousal support)
Net Income (Line 23600): This will reflect the total income minus the deductible support payments.
Since child support payments are not deductible, they will not be reported as a deduction on the T1 return. Only the deductible spousal support payments will appear on line 22000.

Line21999

For Pat’s T1 return, based on the above numbers, what would Pat put into line 21999?

Line 21999 on the T1 General Income Tax and Benefit Return is used to report the total amount of support payments made, including both deductible (spousal support) and non-deductible (child support) payments.

Based on the information provided, Pat pays $2,000 per month in child support and $2,000 per month in spousal support.

Here’s how Pat would complete these lines on his T1 return:

Annual Calculation
Annual Child Support Payments: $2,000 × 12 = $24,000
Annual Spousal Support Payments: $2,000 × 12 = $24,000
Total Support Payments: $24,000 (child support) + $24,000 (spousal support) = $48,000

Lines on T1 Return
Line 21999 (Total support payments made): This includes both child and spousal support payments.
Pat would enter $48,000 on line 21999.
Line 22000 (Deductible support payments made): This includes only the deductible spousal support payments.
Pat would enter $24,000 on line 22000.

Summary

Line 21999: $48,000 (Total support payments made, including both child and spousal support)
Line 22000: $24,000 (Deductible spousal support payments)
By completing these lines, Pat accurately reports both the total support payments made and the portion that is deductible.

Read More:

Support Payments, Canada Revenue Agency

Technical Tax Information, Support Payments: Canada Revenue Agency

Mortgage Application: Paying Support
Mortgage Application: Paying Support

Pat’s Mortgage Application

How would Pat’s support payments be treated on the mortgage application?
When applying for a mortgage, Pat’s support payments (both child support and spousal support) will impact the mortgage application in terms of debt service ratios and disposable income.

Here’s how lenders typically treat these payments:

Income Consideration

Pat’s gross annual income is $100,000.

Debt Service Ratios

  • Gross Debt Service (GDS) Ratio: Measures the percentage of Pat’s income that goes toward housing costs, including mortgage payments, property taxes, heating, and 50% of condo fees (if applicable).
  • Total Debt Service (TDS) Ratio: Measures the percentage of Pat’s income that goes toward all debt obligations, including housing costs and other debt payments (such as car loans, credit card payments, and support payments).

Impact of Support Payments

Monthly Child Support Payments: $2,000 (not deductible for tax purposes, but considered in TDS ratio calculation).
Monthly Spousal Support Payments: $2,000 (deductible for tax purposes, but considered in TDS ratio calculation).

Annual Calculation:

Annual Child Support Payments: $2,000 × 12 = $24,000
Annual Spousal Support Payments: $2,000 × 12 = $24,000
Total Monthly Support Payments:
Total Monthly Support Payments: $2,000 (child) + $2,000 (spousal) = $4,000
Total Annual Support Payments: $4,000 × 12 = $48,000

Calculation of Ratios:

Adjusted Annual Income: For mortgage purposes, the gross annual income remains $100,000.
Monthly Gross Income: $100,000 / 12 = $8,333.33

Monthly Obligations:

Monthly Support Payments: $4,000
Other Monthly Debts: Lenders will add these to other fixed monthly obligations (if any).

GDS and TDS Ratios:

GDS Ratio: Not directly affected by support payments, but crucial for determining housing affordability.

TDS Ratio:
TDS Ratio = (Monthly Housing Costs + Monthly Debt Obligations) / Monthly Gross Income × 100%
TDS Ratio = (Housing Costs + $4,000) / $8,333.33 × 100%

Example Calculation

Assume Pat has additional monthly housing costs (mortgage, property taxes, etc.) of $2,000.

Total Monthly Debt Obligations: $2,000 (housing) + $4,000 (support) = $6,000
TDS Ratio Calculation: ($6,000 / $8,333.33) × 100% ≈ 72%

Impact on Mortgage Application:

  • Lenders typically prefer a TDS ratio below 40-44%. Pat’s high TDS ratio (72%) would make it difficult to qualify for a mortgage based on traditional lending criteria.
  • Lenders may require additional documentation or may offer a smaller loan amount to ensure affordability.
  • Pat may need to explore other options such as reducing monthly obligations or increasing income to improve debt service ratios.

Summary

Income: $100,000
Support Payments: $4,000 monthly
Impact: High TDS ratio (72%) will negatively affect mortgage qualification. Only a private lender would consider giving Pat a mortgage and that would not likely be in Pat’s best interest.
Pat should consider working with Allen Ehlert who can help navigate these challenges and explore potential solutions.

Mortgage and Money Radio Logo
Allen Ehlert

Allen Ehlert

Allen Ehlert is a licensed mortgage agent. He has four university degrees, including two Masters degrees, and specializes in real estate finance, development, and investing. Allen Ehlert has decades of independent consulting experience for companies and governments, including the Ontario Real Estate Association, Deloitte, City of Toronto, Enbridge, and the Ministry of Finance.

Foreign Funds for Down Payment

Using Foreign Funds for Down Payment

Owning property in Canada is an attractive prospect for many, from newcomers and investors to Canadian expatriates looking to return home. However, financing a mortgage with funds sourced from outside of Canada presents unique challenges. Lenders, banks, and...
Crime

Ontario’s Worst Crime Cities

Economic conditions, law enforcement practices, and community involvement are just a few of the variables that can affect and fluctuate crime rates. It's also important to consider the type of crime (violent, property, etc.) when evaluating these statistics. However,...
Private Lenders

Who are Canada’s Private Lenders?

Discover who Canada’s private lenders are and the important role they play in Canada’s housing market.

Temporary Worker Mortgage Application

Temporary Worker Mortgage Application

Temporary workers in Canada—those employed on a fixed-term contract, through an agency, or seasonally—often face additional challenges when applying for a mortgage. Because lenders prefer stable, long-term employment, temporary workers are seen as higher-risk...
What is a Second Mortgage?

What is a Second Mortgage?

A second mortgage is a loan that is secured against a property that already has an existing mortgage. It is considered "second" because it is subordinate to the first mortgage in terms of priority—meaning that if the homeowner defaults, the first mortgage lender gets...
Housing Supply

10 Factors Impacting Housing Supply

A complex interplay of various factors affects the supply of housing in Ontario. These factors can affect the availability, type, and affordability of housing in the province. Here are ten key factors impacting the supply of housing in Ontario: 1. Land Availability...
Getting a Second Mortgage

Getting a Second Mortgage

If you have a first mortgage, can you just go out and get a second mortgage? The short answer is not always. While it is possible to obtain a second mortgage if you already have a first mortgage, several factors must align for you to qualify. You cannot simply go and...
Non Conforming Apartment

Non-Conforming Apartment Income

As a mortgage agent who underwrites mortgages, I’ve come across countless applications where homeowners and investors alike want to leverage rental income from basement suites or converted spaces to boost their borrowing power. It's a smart move in theory, but the...
Affordable Housing

Ontario’s 10 Most Affordable Cities

Affordability remains a cornerstone of housing decisions, often outweighing even employment factors when individuals and families consider relocating. In Ontario, a diverse province with a wide range of urban and rural settings, certain cities stand out for their...
Toronto Traffic

10 Shortest Ontario Commute Cities

A short commute to work really improves the quality of your life. Workers don't push for remote work if they can live in a community where the commute is short and pleasant. However, if your employer is in a major city, or worse yet, Toronto, and the demand is for you...