Mortgage Rates

What affects your mortgage rate.

Your credit, your income and debt ratios, your down payment, your term, and the property itself all move the rate a lender offers you. These are the borrower-side levers — the ones you can actually pull before you apply.

Credit scoreIncome & debt ratiosDown payment / LTVTerm choiceProperty & purposeFixed vs variable

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Written by the Mortgage Squad Advisors Editorial Team · Reviewed by Surrayya Afzal, Principal Broker, FSRA #M14001433 · Updated July 2026

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The market sets the backdrop — bond yields and the prime rate — but you are not a passenger. A large slice of the rate you’re offered is decided by things you personally control: how strong your credit is, how clean your income and debt ratios look, how much you put down, which term you choose, and what kind of property you’re buying. Two applicants with identical incomes can be quoted noticeably different rates because one prepared their file and the other didn’t. Knowing which levers move the number — and pulling them before you apply, not after — is the difference between accepting a rate and earning a better one.

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On this page

What affects your mortgage rate: the levers you control
Credit, income and debt ratios: how lenders read your file
Down payment, term and property: the structural levers
Fixed vs variable: a rate-and-risk decision
Optimize your file, then let lenders compete
FAQ

What affects your mortgage rate: the levers you control

It’s easy to feel like your mortgage rate is handed down from the market and there’s nothing you can do. Half of that is true — bond yields and the prime rate set the funding cost every lender starts from, and you can’t change them. But the other half, the margin a lender adds on top, is driven largely by your file. That’s the part you influence, and it’s bigger than most borrowers realize. Two applicants with the same income and the same house can be quoted noticeably different rates because one arrived with a clean, optimized file and the other didn’t.

There are essentially seven borrower-side factors that move your rate: your credit, your income and how it’s documented, your debt-service ratios, your down payment and loan-to-value, your choice of term, the property and its purpose, and your fixed-vs-variable decision. This page walks through each one and, more importantly, tells you which you can improve before you apply. If you want the lender-side mechanics — how bond yields, prime, and insurance build the rate in the first place — read how mortgage rates are calculated, and check today’s market on our mortgage rates hub.

Credit, income and debt ratios: how lenders read your file

The first three levers are about whether a lender trusts you to repay, and they interact. Credit is the single biggest borrower-side factor: a strong score unlocks A-lenders’ best pricing, while a thin or bruised score pushes you toward higher A-pricing or B and private lenders. It’s also the most improvable — paying down high-utilization cards can lift a score within a cycle or two, and correcting bureau errors costs nothing. Our credit score for a mortgage and improve your credit score pages cover exactly how.

Income matters less for its raw size and more for how stable and provable it is. Salaried T4 income qualifies cleanly; self-employed, commission, or newer income needs more documentation and steers toward lenders who price it differently. Income feeds directly into your debt-service ratios — Gross Debt Service (GDS), your housing costs against income, and Total Debt Service (TDS), which adds all other debt. Lenders cap these and everyone must clear the federal stress test at a qualifying rate. Strong ratios keep you in sharp pricing and widen your lender choices; tight ratios narrow both. Run yours through our affordability calculator and stress-test calculator before you apply.

Down payment, term and property: the structural levers

The next three factors are structural — they’re about the shape of the deal, not just your creditworthiness. Your down payment sets your loan-to-value and decides insurability, and this one surprises people: less than 20% down makes the mortgage insured, which can actually lower your rate because the insurance reduces the lender’s risk. A large down payment lowers LTV and risk too. The awkward middle — just over 20% down, uninsured — sometimes carries the highest rate of all. We’ll show you whether nudging your down payment across a threshold helps or hurts.

Your term changes the rate independent of everything else, because each term draws on a different funding cost; the shape of the yield curve decides whether a 3-year or 5-year is cheaper on any given day. And the property and its purpose feed the risk margin: an owner-occupied home, a rental, a condo, a rural or non-standard property each draw different pricing and different lender appetite. A rental is generally priced above an owner-occupied home; unusual properties shrink the lender pool. These structural levers are where a broker’s market view earns its keep — the right lender for a rental is rarely the right lender for a first home.

Fixed vs variable: a rate-and-risk decision

The seventh lever is your fixed-versus-variable choice, and it deserves care because it’s not simply ‘pick the lower number.’ Fixed and variable are priced off different engines — fixed tracks bond yields, variable tracks the prime rate — so which one is cheaper depends on the day and the shape of the market. But the headline rate is only half the decision. Fixed buys you payment certainty for the whole term, insulated from rate moves, usually at the cost of a larger break penalty if you need to exit early. Variable typically offers a cheaper break penalty and the chance to benefit if rates fall, in exchange for accepting rate risk during the term.

The right answer depends on your risk tolerance, how long you plan to hold the mortgage, and whether a rising payment would strain your budget. Watching where rates may head helps — see our prime rate tracker and rate forecast — but don’t let a forecast override your own comfort with uncertainty. Related structural choices, like open versus closed, layer on top: an open mortgage costs more in rate but lets you prepay or exit freely. Once you’ve chosen the structure that fits your life, optimize the rate within it rather than chasing a number that comes with terms you’ll regret.

Optimize your file, then let lenders compete

Here’s how the seven factors turn into an actual lower rate. The sequence matters: fix the controllable levers first, then shop the market. Applying cold — walking into one bank with an un-optimized file — leaves money on the table twice, once because your file isn’t as strong as it could be and again because you only saw one lender’s margin. Instead, audit your credit, ratios, down payment, term, and property before anyone pulls your bureau, tighten what tightens quickly, and only then present the file to the market. Get pre-approved so you know your true band up front, and understand why a real pre-approval beats a soft pre-qualification.

The final lever is competition. Because every lender prices the same file differently, running it past 100+ lenders under one roof surfaces the sharpest margin available for your profile — something no single bank can match. Mortgage Squad Advisors operates under FSRA brokerage licence #13737, and our rate-beat guarantee means that if you bring an eligible written offer from a Big-6 bank, we’ll beat it on a comparable product or pay you $500 (see terms). Read the full playbook on how to get the best mortgage rate, apply in minutes, or ask Maya, our AI assistant, a quick question first. No credit check to start.

What you get

Why Canadians choose Mortgage Squad Advisors.

Understand the seven borrower-side factors that lenders actually price on

See why your credit score is the single biggest lever you control

Learn how income stability and debt-service ratios (GDS/TDS) shape your options

Grasp how down payment size and loan-to-value swing the rate — and insurability

Know how your choice of term changes the rate independent of your profile

Understand how property type and purpose (home vs rental) affect pricing

See how fixed vs variable is a rate-and-risk decision, not just a number

Learn which factors to fix before you apply — and which to leave alone

Avoid the common missteps that quietly push a good file into a worse rate band

Use your strengthened file across 100+ lenders, backed by our rate-beat guarantee against Big-6 offers (see terms)

How it works

Three simple steps, no pressure.

Audit your file

Before a single lender sees you, we review the levers you control: credit, income and how it’s documented, existing debts and ratios, your down payment, and the property. Fifteen minutes, no bureau pull to begin, and you learn exactly where your file is strong and where it’s leaking rate.

Fix what’s fixable

Some levers move fast. Paying down a maxed card lifts your score within a cycle or two; documenting income cleanly, adjusting the down payment to stay insurable, or choosing a smarter term can each shift your rate band. We tell you which changes are worth making before you apply — and which aren’t worth the wait.

Shop the strengthened file

Once your inputs are optimized, we run the file past 100+ lenders to find the one priced for your exact profile, then back it with our rate-beat guarantee against Big-6 offers, like-for-like (see terms). A stronger file plus a competitive market is how you land the number your situation actually deserves.

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FAQ

Common questions, answered.

Don’t see yours? Ask Maya — instant answer, any time.

What affects your mortgage rate the most?

On the borrower side, your credit score, your loan-to-value (down payment size and insurability), and your income and debt ratios do most of the work — with your choice of term and the property type close behind. The market backdrop (bond yields for fixed, prime for variable) sets the floor everyone starts from, but among the factors you personally control, credit and down payment usually move the needle furthest. The good news is those are also the levers you can improve before you apply.

How much does my credit score affect my rate?

A lot. Credit is a core input to the risk margin lenders add on top of their funding cost. A strong score unlocks A-lenders’ sharpest pricing; a weak or thin score pushes a file toward higher A-pricing or toward B and private lenders at higher rates. Even a modest improvement can move you into a better price band. Paying down high-utilization cards is often the fastest lift⁴ — see our credit-score-for-a-mortgage and improve-credit-score pages for the specifics.

Does my income or job type change my rate?

Income affects your rate mostly through how cleanly it qualifies you. Lenders test your gross debt service (GDS) and total debt service (TDS) ratios — your housing and total debt costs against your income. Stable, easily documented income (salaried T4) sails through; self-employed, commission, or newer income needs more documentation and can steer a file toward lenders who price that risk differently. It’s less about the dollar amount and more about how provable and stable the income is.

How does my down payment affect the rate?

Your down payment sets your loan-to-value (LTV) and decides whether the mortgage is insured. Less than 20% down makes it high-ratio and default-insured³, which can actually produce a lower rate because insurance reduces the lender’s risk. A large down payment lowers LTV and risk too. The awkward zone is just over 20% down (uninsured), which sometimes prices highest. We’ll show you where your down payment lands and whether nudging it helps.

What are GDS and TDS ratios, and why do they matter?

Gross Debt Service (GDS) is your housing costs — mortgage, property tax, heat, half of condo fees — as a percentage of gross income. Total Debt Service (TDS) adds all your other debt payments. Lenders cap these ratios to confirm you can carry the loan (CMHC’s limits are 39% GDS and 44% TDS for insured mortgages¹), and new borrowers must also pass the federal stress test at the greater of the contract rate plus 2% or 5.25%². Strong ratios widen your lender choices and keep you in sharper pricing; tight ratios narrow options. Try our mortgage affordability and stress-test calculators to see yours.

Does the property or how I’ll use it affect my rate?

Yes. Lenders price risk by property, so an owner-occupied home, a rental, a condo, a rural property, or a second home can each draw different pricing and different lender appetite. A rental or investment property, for instance, is generally priced higher than an owner-occupied home because the lender sees more risk. Unusual properties (very rural, non-standard construction, small units) narrow the lender pool. The property is a real input, not an afterthought.

Should I choose fixed or variable to get a lower rate?

Fixed and variable are priced off different engines — fixed tracks bond yields, variable tracks prime — so which is ‘lower’ depends on the day and the yield curve. But it’s not only about the headline number: fixed buys payment certainty, variable buys flexibility and a cheaper break penalty, with rate risk during the term. Choose based on your risk tolerance and plans, then optimize within that choice. Our fixed vs variable page walks through the trade-off in full.

Which factors can I actually change before applying?

The fast levers are credit (pay down high-utilization balances, correct any bureau errors), how you document income, and your down payment size relative to the insurability thresholds. Choosing a smarter term and clearing or consolidating small debts to improve your ratios also help. What you can’t change is the market backdrop. The play is to optimize the controllable levers first, then shop the strengthened file — don’t apply cold and accept whatever comes back.

Can a broker get me a better rate with the same file?

Often, yes — because the rate isn’t just your file, it’s your file matched to the right lender. Each lender sets its own margin and appetite, so the same profile gets different quotes across the market. A broker with access to 100+ lenders finds the one priced for your situation instead of accepting a single bank’s number. Combine that reach with our rate-beat guarantee against Big-6 offers, like-for-like (see terms) and FSRA licence #13737, and a strengthened file reaches the sharpest available price.

Related products

Mortgage rates How rates are calculated Mortgage rate hold Credit score for a mortgage Improve your credit score Fixed vs variable Affordability calculator Get the best rate

Sources & references

Figures on this page are sourced below and re-checked each quarter. Rates, insurer rules and lender policies change — confirm anything you plan to act on with a licensed advisor.

1. Canada Mortgage and Housing Corporation (CMHC), Calculating GDS / TDS (Accessed September 2026) — How gross and total debt service ratios are calculated; CMHC’s maximums are 39% (GDS) and 44% (TDS).
2. Office of the Superintendent of Financial Institutions (OSFI), Minimum qualifying rate for uninsured mortgages (Accessed September 2026) — Borrowers qualify at the greater of the contract rate plus 2% or 5.25%.
3. Canada Mortgage and Housing Corporation (CMHC), What is mortgage loan insurance? (Accessed September 2026) — Mortgage loan insurance is generally required when the down payment is under 20%, and it protects the lender.
4. Financial Consumer Agency of Canada, Improving your credit score (Accessed September 2026) — Paying on time and keeping balances low relative to your credit limits help improve a credit score.

Ready when you are.

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