Self-Employed Mortgage
Qualification Calculator

Lenders treat self-employment income differently from a T4 salary, and treatment varies by lender and insurer. This calculator averages the filed years you enter as its baseline — actual lender/insurer income treatment varies, and some lenders weight a declining or single year differently than a simple average.

The income that counts is net self-employment income — the applicable CRA T1 line for your situation: line 13500 (business), 13700 (professional), 13900 (commission), 14100 (farming) or 14300 (fishing), as applicable — not a subtraction between them.

Beyond the filed-net baseline, this calculator also models two CMHC Self-Employed scenarios for sole proprietors and partners: a 15% gross-up applied to each positive filed year, or an add-back of eligible business-use-of-home, motor-vehicle and CCA expenses. Both are underwriting-dependent illustrations, not guarantees.

CMHC may also consider alternative documentation for self-employed borrowers: T1 General and Notice of Assessment, T2125 statement of business activities, business financial statements, GST/HST returns, business bank account statements, business licence or articles of incorporation, audited or review-engagement financial statements, and, for some recently self-employed borrowers, signed contracts or recent account statements. Income on NOAs is not the only documentation lenders and insurers may accept.

If only one year of self-employment is available, this calculator shows a single-year illustration rather than a 2-year average, and many lenders will still consider you — underwriting for recently self-employed borrowers can vary.

Federally regulated lenders use the greater of the contract rate + 2% or 5.25% for most new mortgage qualification. The same benchmark is used for insured purchase qualification. See OSFI’s minimum qualifying rate guidance for uninsured mortgages; the insured-mortgage benchmark is set separately but mirrors the same floor. It applies regardless of your down payment size.

For example, if your contract rate is 5.00%, your qualifying rate is max(5.00% + 2%, 5.25%) = 7.00%. Your maximum mortgage is calculated as what you can afford at 7.00% — even though your actual payments would be at 5.00%. This is why the qualifying mortgage is smaller than what your payment at the contract rate might suggest.

This calculator shows your monthly payment at the contract rate (what you’d actually pay) and qualifies you using the stress-test rate, as lenders do.

Amortization is the total length of time it would take to pay off your mortgage completely, assuming the same payment throughout. In Canada, 25 years is standard for insured mortgages; 30 years is available on conventional (20%+ down) mortgages. Your payment is calculated based on the amortization.

Term is the length of your current mortgage contract — the period during which your interest rate is locked in. Common terms are 1, 2, 3, 4, 5, 7, and 10 years. A 5-year term with a 25-year amortization means your payments are set as if paying off in 25 years, but after 5 years you still have roughly 20–22 years remaining and must renew. The “balance at renewal” figure shows what you’ll owe at that point.

Renewal treatment depends on what you're doing at renewal. A straight switch of an existing uninsured mortgage to a new lender, at the same loan amount and remaining amortization, is treated differently than taking a new loan, increasing your loan amount, or refinancing. OSFI does not prescribe the minimum qualifying rate for qualifying uninsured straight switches at renewal when the loan amount and remaining amortization are not increased. Increasing your loan amount, changing amortization, or applying with a new lender in other ways can bring re-qualification back into play, where lower or less-documented self-employed income could reduce what you qualify for. See the FCAC's guide to renewing a mortgage for more on how renewal works. Maintaining solid income documentation still helps if you do need to re-qualify.

Monthly payments divide the year into 12 equal payments. Bi-weekly payments divide it into 26 payments of a slightly smaller amount — over a year you pay roughly the same total.

Accelerated bi-weekly is different: each payment is exactly half of what your monthly payment would be, made 26 times per year instead of 24. This means you effectively make 13 monthly payments per year instead of 12 — one extra. That extra payment goes directly to principal and can shorten a 25-year mortgage by roughly 3–4 years, saving tens of thousands in interest, depending on your rate.

Accelerated weekly works the same way: each payment is one-quarter of the monthly amount, paid 52 times per year. The savings are similar to accelerated bi-weekly.

This calculator assumes a nominal annual mortgage rate compounded semi-annually, a common convention for Canadian fixed-rate mortgage calculations: the equivalent periodic rate is derived as (1 + annual rate / 2)^(2 / payments per year) − 1.

Gross Debt Service (GDS) measures housing costs as a share of gross monthly income. It includes the stress-tested mortgage payment, monthly property tax, heating costs, and 50% of condo fees. The GDS limit is 39%.

Total Debt Service (TDS) takes GDS and adds all other monthly debt payments — car loans, student loans, lines of credit, and minimum credit card payments. The TDS limit is 44%.

Your maximum mortgage is whichever of the two limits is reached first. If you carry a lot of other debt, TDS will often be the binding constraint. If you have no other debt, GDS usually limits your mortgage size. The calculator shows which is binding and displays both ratios so you can see how close you are to each limit.

The minimum down payment rules are: 5% on the first $500,000; 10% on any portion between $500,000 and just under $1,500,000; and 20% of the total price for purchase prices of $1,500,000 or more. An insured (high-ratio) mortgage is only available below the $1,500,000 purchase-price cap — a purchase at or above $1,500,000 always requires at least 20% down, with no insurance option.

Mortgages with less than 20% down require mortgage default insurance (commonly referred to as CMHC insurance, though Sagen and Canada Guaranty also offer it). This estimate uses CMHC’s common homeowner premium schedule — it may not reflect every insurer or product:

• 5% to 9.99% down, ≤25-year amortization: 4.00% of the loan amount — eligible 30-year: 4.20%
• 10% to 14.99% down, ≤25-year amortization: 3.10% of the loan amount — eligible 30-year: 3.30%
• 15% to 19.99% down, ≤25-year amortization: 2.80% of the loan amount — eligible 30-year: 3.00%
• 20% or more: no premium (conventional mortgage)

The 30-year insured rates above require first-time-buyer or newly-built-home eligibility. A 30-year conventional mortgage (20%+ down) does not use this eligibility test at all — 30-year availability on uninsured mortgages is lender-specific, and this calculator permits a 30-year conventional scenario.

The premium is added to your mortgage principal and amortized over the life of the mortgage — it is not paid upfront. This means your actual loan balance and monthly payment are both slightly higher than your base mortgage amount. This calculator shows the insurance premium as a separate line so you can see the cost clearly.

Actual insured-program eligibility and pricing are subject to lender- and insurer-specific underwriting; this calculator models CMHC’s standard homeowner schedule only.

For self-employed borrowers, income tax deductions and mortgage qualification pull in opposite directions. Claiming more business expenses reduces your taxable income. It can also reduce the net income used to qualify you for a mortgage — but exactly how much depends on which qualifying-income method applies.

Under the filed-net baseline, a $1,000 deduction taken in the most recent year you entered reduces that year's net income by $1,000, but the qualifying income is an average across the years you provided — so a two-year average absorbs only part of that $1,000 change. Under the CMHC 15% gross-up scenario, the deduction is amplified in the year it's taken (since that year's net income is grossed up by 15%) but the other modelled year is unaffected, so the blended effect differs from both the raw $1,000 and the grossed-up amount. Under the CMHC eligible add-back scenario, a deduction that qualifies as an eligible business-use-of-home, motor-vehicle or CCA add-back can be added back to the same year's income, fully or partly offsetting the qualifying-income effect of that deduction.

This calculator recomputes your qualifying income and maximum mortgage through the full model for each scenario, rather than assuming a flat dollar-for-dollar relationship. If your down payment — not your income — is currently the binding constraint on purchase price, a change in qualifying income may not change your maximum purchase price at all, even though your mortgage capacity changes.

The tax side of this trade-off depends on your province, other income, and CPP position — use the Self-Employed Tax Calculator to estimate it. There is no universal answer for the right balance; it's a genuine trade-off that your accountant and mortgage advisor should weigh together.

Business-for-Self (BFS) is the general term for mortgage insurer and lender programs designed for self-employed borrowers. This calculator models CMHC Self-Employed as its explicit example: CMHC Self-Employed allows a 15% gross-up or eligible deduction add-backs for sole proprietors/partners, subject to underwriting. Other mortgage insurers and lenders may offer their own Business-for-Self policies with different gross-up percentages, eligible add-back categories, or documentation requirements — those are not modelled here.

Alternative (B) lenders — trust companies, credit unions, and mortgage investment corporations — may use gross revenue (before expenses) or a hybrid approach for self-employed income qualification. This can be advantageous for borrowers with high revenue and significant deductions, though alternative lenders typically charge higher rates and fees.

This calculator models the filed-net baseline plus the two CMHC Self-Employed scenarios described above. If a different insurer's BFS program or an alternative lender applies to your situation, the qualifying mortgage shown here may understate your actual options. Work with a mortgage broker to explore all available products.

This is an educational estimate, not a mortgage pre-approval or commitment to lend. The result reflects standard A-lender qualification rules as of 2026 and is calculated entirely in your browser — no information is sent to a server.

Individual lender policies, your credit score, the specific property, employment history, and other factors all affect whether you qualify and at what rate. Different lenders may treat self-employment income differently. This calculator cannot account for those variables.

For an actual pre-approval, speak with a mortgage broker or lender directly. Consider using the Expense Calculator to understand your net income and the Tax Calculator to see your marginal rate — both are relevant to the deduction trade-off shown here.