Mortgage Math

How Lenders Calculate Income

How Canadian A lenders, mortgage insurers, B lenders and private lenders convert salary, variable income, pensions, benefits, foreign employment, sole-proprietor income, corporate NIAT and bank-statement cash flow into qualifying income.

Published August 14, 2026 Fact-checked August 14, 2026 Ontario, Canada

Mortgage math

Income becomes mortgage income only after the lender chooses a method

The lender does not ask only 'How much do you earn?' It asks which income is stable, verifiable and usable under that particular channel. Insured A, conventional A, B and private lenders can start from the same borrower and reach different qualifying-income numbers.

The first question is not the income type—it is which lending channel is doing the calculation

HopeWell separates income review into four broad channels because they do not solve the problem the same way: insured A, conventional uninsured A, alternative/B and private.

Insured files have to satisfy the chosen mortgage insurer's eligibility and documentation rules. Conventional A lenders can have more room to apply their own internal policy or exception authority. B lenders often accept non-traditional self-employed evidence such as bank statements. Private lenders usually focus more on equity and exit, but still review deposits and recurring cash flow to judge whether the payment is realistic.

The practical result is that there is no single Canadian table that converts every type of income into one universal number.

ChannelTypical income philosophyWhat often creates the difference
Insured AVerifiable income under lender + insurer rulesInsurer eligibility, continuity, documentation, 39/44 insured ratio ceiling
Conventional AVerifiable income under lender policyMore lender-specific methods and controlled exceptions
B / alternativeVerified or reconstructed incomeBank-statement/stated-income methods, higher ratio tolerance, pricing
PrivateAbility to carry + equity + credible exitBank statements and cash flow often matter more than a rigid GDS/TDS formula

Fixed salary or guaranteed hourly income is usually the simplest income to annualize

For a borrower with a fixed salary, lenders commonly start with the current verified annual salary. For guaranteed hourly income, a basic annualization is hourly rate × guaranteed weekly hours × 52.

The calculation still depends on the job actually being current and stable. A job letter and recent paystub are the usual starting documents; direct-deposit history, T4s or NOAs may be requested when the file, lender or insurer needs more support.

Example: $32 per hour × 40 guaranteed hours × 52 = $66,560 annual gross income. If hours are not guaranteed, the lender may move the income into the variable-income method instead.

Bonuses, commissions, overtime and fluctuating hours are usually a history problem, not an annualization problem

In HopeWell's A-lender work, two-year history is the normal starting point for income that fluctuates. T4s, NOAs and current employment evidence are used to establish both amount and continuity.

A simple two-year average is useful, but the trend matters. If income falls materially in the most recent year, a lender may use the lower recent number rather than a higher historical average. If the income is rising and the current year supports the trend, some lenders can be more comfortable using the average.

The decision is therefore not 'average everything.' It is normalize a sustainable amount that the current evidence supports.

Year 1Year 2Two-year averageHopeWell interpretation
$90,000$110,000$100,000Rising trend; average is often easier to support.
$110,000$90,000$100,000Recent decline; lender may be reluctant to use $100,000.
$70,000$130,000$100,000Large swing; explain why Year 2 is sustainable before relying on the average.

Pensions, support and child benefits are usable only to the extent the chosen program accepts their amount and continuity

CPP, OAS and other pension income are commonly supported with pension slips, NOAs, award/administrator evidence or bank deposits. Support received can be used where the legal obligation and actual receipt are adequately documented; support paid goes the other direction and becomes a TDS liability.

Canada Child Benefit is program-sensitive. On an insured deal, the insurer's current rules must be met. On conventional A and B-lender files, HopeWell has seen different limits and continuation requirements by lender. Any percentage cap or continuation test therefore belongs to the specific lender/insurer program being used; it should not be presented as one universal Canadian rule.

The better question is: How much will this lender use, for how long must it continue, and what evidence does it require?

Parental leave is usually assessed around the confirmed return-to-work income, not only the temporary benefit deposit

In HopeWell's experience, many lenders can use the borrower's confirmed return-to-work income when the employer clearly confirms the position, return date and expected income. The actual temporary EI/benefit payment is not necessarily the only number that matters.

Insured files still have to satisfy the selected insurer's rules. Conventional A lenders and B lenders can have their own evidence and timing requirements. If the return date is uncertain, employment has changed, or the borrower does not intend to return on the stated terms, the file has to be recalculated rather than relying on the old salary.

This is a continuity question first and a math question second.

Foreign employment income is one of the clearest examples of why lender selection changes the math

Foreign income should be split into at least two questions: U.S.-source employment income and other foreign-source employment income. Currency, jurisdiction, tax reporting, employer quality, continuity and document verifiability can all affect the lender's comfort.

HopeWell broker-channel observation — August 2026: TD has been able to consider U.S.-based employment income on conventional transactions up to 80% LTV in files that otherwise fit policy. For non-U.S. foreign employment income, many A-lender options HopeWell encounters become materially more conservative, often around 65% LTV. Scotiabank has used an internal approved-employer approach for some foreign-income files. These are lender observations, not public promises, and must be reconfirmed on a live file.

Alternative/B lenders can sometimes go to 80% LTV on well-documented foreign income where the A side will not. That flexibility normally comes with alternative-lender pricing and underwriting rather than being 'free' additional qualification.

See Windsor first-time buyer with U.S. employment income: an uninsured A-lender file where exchange-rate movement changed the CAD income and ratios before closing. Also see Hamilton purchase with 100% Dubai income, where the clients wanted 80% LTV, most A lenders were comfortable only around 65%, and a B lender ultimately used the foreign salary evidence to complete the purchase.

Foreign-income situationHopeWell broker-channel experienceWhat normally needs close review
U.S. employment incomeSome conventional A lenders, including TD in HopeWell experience, can consider up to 80% LTVExchange rate, job letter/pay evidence, tax/residency, continuity
Non-U.S. employment incomeA-lender options often become more conservative; around 65% LTV is common in HopeWell's broker-channel experienceJurisdiction, employer acceptability, tax treatment, currency, document verification
B-lender foreign incomeCan be available to 80% LTV on suitable filesEmployment evidence, bank deposits, source of down payment, property/credit, alternative-lender cost

For a sole proprietor, A lenders usually start with verified net self-employed income and the T1 business schedule

For an unincorporated sole proprietor, the T1 General and Statement of Business or Professional Activities are central because they show gross business revenue, expenses and net self-employed income. Two years of tax history is the normal A-lender starting point.

HopeWell commonly sees A-lender policies permit a 15%–20% gross-up on eligible net self-employed income, depending on the lender and program. Some lenders instead use specific add-backs. Do not apply both a blanket gross-up and the same add-backs unless the lender's method explicitly permits it.

Example: if the lender accepts a two-year average net self-employed income of $100,000 and permits a 15% gross-up, qualifying income would be $115,000. At 20%, it would be $120,000. That $5,000 difference flows directly into GDS/TDS capacity.

Corporate NIAT is where A-lender self-employed calculations can diverge dramatically

For an incorporated borrower, personal salary/dividends may understate the business's capacity because profit can be retained in the corporation. Some A-lender programs therefore use corporate net income after tax (NIAT) as part of the income analysis.

In the NIAT methodologies HopeWell uses in the broker channel, the calculation is based on a two-year average of NIAT less dividends. Dividends must be removed from the corporate NIAT calculation when they have already been distributed because otherwise the same corporate earnings can be counted twice—once inside corporate profit and again as personal dividend income.

HopeWell broker-channel observation — August 2026: TD has at times used up to 100% of eligible two-year average NIAT less dividends. Scotiabank has used approximately 50%–60% depending on its internal score/assessment. HopeWell has also seen the relevant owners whose business earnings support the file required to be on the application so the lender can assess the ownership and income properly.

These are powerful methods, but they are not universal public lender rules. Reconfirm ownership requirements, eligible corporate entities, percentage used and required accountant/tax documents before relying on the calculation.

StepNIAT calculation check
1Identify each corporation whose earnings are being relied on.
2Use the relevant two years of corporate financial/tax evidence.
3Start with NIAT and deduct dividends to avoid double counting.
4Average the two years under the lender's method.
5Apply the lender's permitted percentage / internal method.
6Reconcile salary/dividends already used personally and ownership share.

B lenders can reconstruct self-employed income from 12 months of business cash flow

The major difference from conventional A-lender verification is that a B lender can often look beyond taxable personal income and reconstruct current business cash flow. Twelve months of business bank statements is a common starting point in the broker channel.

HopeWell's practical method is: add genuine business revenue deposits, remove transfers/loan proceeds/owner injections and other non-revenue credits, then deduct the business expenses or lender-prescribed expense factor. The result is not automatically household income; ownership, tax, sustainability and lender policy still have to be applied.

Equitable Bank's current published alternative BFS program, for example, accepts at least 12 months of business bank statements or business financials and uses net income for qualification. That is one public example of the broader alternative-lending method, not the definition of every B lender.

Non-taxable income can sometimes be grossed up—but the percentage is lender/program specific

Because GDS/TDS are based on gross income, some eligible non-taxable income may be grossed up to create a comparable pre-tax amount. HopeWell commonly encounters gross-up ranges around 25%–35%, but the income source and lender/program have to permit it.

Do not gross up an income merely because no tax was withheld from a bank deposit. First establish that the income is eligible, genuinely non-taxable and expected to continue under the lender's rules.

HopeWell practical income reference: start with the channel, then choose the method

This is a broker-practice map, not a promise that every lender will use the same method.

Income typeCommon starting calculationTypical evidence
Fixed salary / guaranteed hoursCurrent verified annual amountJob letter + recent paystub; additional tax/deposit evidence as required
Bonus / commission / fluctuating hoursUsually historical normalized amount / two-year analysisT4s/NOAs + current employment evidence
CPP / OAS / pensionVerified recurring amountTax/pension evidence and/or bank deposits
Support receivedVerified legal/actual recurring amountAgreement/order + evidence of receipt
Child benefitsProgram-specific accepted amountBenefit notice/deposits; continuity rules vary
Parental leaveOften confirmed return-to-work income where policy permitsEmployer confirmation of position, income and return date
Sole proprietor — ATwo-year verified net income, possible lender-specific gross-up/add-backsT1 + Statement of Business Activities + NOAs
Corporation — NIAT programTwo-year average NIAT less dividends, then lender-specific inclusionCorporate financial/tax docs + ownership + personal tax docs
Self-employed — B12-month bank-statement / stated-income reconstructionBusiness bank statements, registration, invoices/financials as required
Foreign employmentConverted, documented income under lender/jurisdiction methodJob/pay evidence, bank deposits, tax/residency/currency evidence as required
Eligible non-taxable incomeLender-specific gross-up may applyEvidence of amount, tax treatment and continuity

Real funded files show three different ways income math can change the result

Aurora private-to-A refinance shows corporate NIAT used in the route back to an A lender. Windsor U.S.-income purchase shows how currency movement can change qualifying income without the borrower's salary changing. Hamilton foreign-income purchase shows a B lender using well-documented non-U.S. foreign income where the A side could not provide the requested 80% LTV.

A funded case proves that a structure worked in that file under the policy and facts at that time. It does not convert the lender's internal method into a universal rule.

Sources and methodology

Sources and verification

Hard insured requirements are source-checked. The lender-specific A/B practices below are HopeWell broker-channel observations as of August 2026 unless a public lender source is identified; live policy should be reconfirmed before submission.