The Complete Guide
How a mortgage actually works in 2026
Everything you need to know to get the lowest rate, the smartest term, and the right structure for your family — written by humans, not AI mush.
1. Two countries, two completely different formulas
The US and Canada quote mortgage rates differently and that single fact trips up almost every cross-border buyer. US mortgages compound monthly — the rate the bank quotes is divided by 12 and applied to the balance every month. Canadian mortgages compound semi-annually, not in advance, by federal law (Bank Act, Section 6). The same nominal rate produces a slightly lower effective rate north of the border, so a 6.0% Canadian quote is mathematically a hair cheaper than a 6.0% US quote. This calculator applies the correct compounding rule the moment you switch countries.
2. The single biggest savings move: shop the market
Borrowers who get quotes from five or more lenders save an average of $3,000–$9,000 in interest over the life of the loan compared with those who take the first quote. The reason is simple: every lender weights credit, debt-to-income, property type and loan-to-value differently. The "best rate" is never universal. Always compare:
- Two or three direct lenders or banks
- One or two independent mortgage brokers (they shop dozens of lenders for you)
- Your existing bank (they often discount to keep you)
3. The 28/36 rule (US) and the 32/40 rule (Canada)
Lenders use two ratios to decide how much you can borrow. In the US the standard is the 28/36 rule: housing costs no more than 28% of gross monthly income, and total debt no more than 36%. In Canada it's the GDS / TDS ratios: 32% gross debt service and 40–44% total debt service. The affordability mode in this calculator uses the appropriate rule for whichever country you've selected.
4. Bi-weekly accelerated is the most powerful free upgrade
Switching from monthly to accelerated bi-weekly payments quietly adds one extra full payment to principal every year. On a 30-year mortgage that single change typically shaves 4–7 years off the term and saves tens of thousands in interest, with no refinance, no fees, and no change to your day-to-day cash flow. The calculator shows you the exact savings the moment you switch frequencies.
By City
Mortgage rates & payments in 12 major cities
Representative figures for a $500,000 home with 20% down on a 30-year (US) or 25-year (CA) amortization. Always confirm with a local lender — your actual rate depends on credit, income, and the property.
| City | Avg Rate | Monthly P&I | Total Interest | Country |
|---|
| New York, NY | 6.78% | $2,602 | $536,800 | US |
| Los Angeles, CA | 6.71% | $2,584 | $530,200 | US |
| Chicago, IL | 6.55% | $2,545 | $516,200 | US |
| Houston, TX | 6.69% | $2,579 | $528,400 | US |
| Phoenix, AZ | 6.62% | $2,562 | $522,400 | US |
| Miami, FL | 6.74% | $2,592 | $533,200 | US |
| Toronto, ON | 4.99% | $2,322 | $296,600 | CA |
| Vancouver, BC | 4.94% | $2,310 | $293,000 | CA |
| Calgary, AB | 4.89% | $2,298 | $289,400 | CA |
| Montreal, QC | 4.96% | $2,315 | $294,500 | CA |
| Ottawa, ON | 4.97% | $2,317 | $295,100 | CA |
| Edmonton, AB | 4.91% | $2,303 | $290,800 | CA |
Don't Forget
The hidden costs of buying a home
Principal & interest is only the start. Budget another 25–35% on top of your mortgage payment for the costs every first-time buyer underestimates.
%
Property tax
0.5%–2.5% of the home's assessed value every year, paid through escrow in the US or directly to the city in Canada.
⛨
Home insurance
$1,000–$3,000 per year depending on location, replacement cost, and hail / flood exposure. Required by every lender.
∑
PMI / CMHC
If your down payment is below 20%, US borrowers pay PMI; Canadian borrowers pay CMHC mortgage default insurance (2.8%–4.0% of the loan).
⌂
HOA / strata / condo fees
Common in condos and townhomes — $200–$900 per month depending on amenities and reserve fund health.
⚒
Maintenance
Budget 1% of the home's value annually for repairs, replacements, and the inevitable surprises a building inspector missed.
⌥
Closing costs
1.5%–4% of the purchase price for legal fees, title insurance, land transfer tax, inspection, and adjustments.
Glossary
Mortgage terms decoded
The jargon every borrower should understand before signing a 25-year contract.
AmortizationThe total length of time over which the loan is fully repaid. Longer amortization = lower payment but more interest over the life of the loan.
Term(Canada only) The length of the rate contract — usually 1–10 years. At the end of the term you renew at the prevailing rate.
PrincipalThe original loan amount. Each payment chips away a little bit of principal and a little bit of interest.
Interest Rate Differential (IRD)The penalty Canadian banks charge if you break a fixed-rate mortgage early. Can be tens of thousands of dollars — always read the fine print.
Closing CostsOne-time fees due at signing: legal, title, inspection, land transfer tax, adjustments. Expect 1.5%–4% of the purchase price.
Stress Test(Canada) Borrowers must qualify at the higher of the contract rate plus 2% or the Bank of Canada qualifying rate.
LTVLoan-to-value. Loan amount divided by home price. Lenders price tier their rates by LTV — under 80% gets the best rates.
Escrow / Holdback(US) The lender collects 1/12 of your annual property tax and insurance with each payment, then pays the bills on your behalf.
FAQ
Frequently asked questions
Short, honest answers to the questions every borrower should ask.
How does this mortgage calculator work?
Enter your home price, down payment, interest rate, and term. The calculator applies the correct compounding rule — monthly for the US, semi-annual for Canada — then computes your exact periodic payment, total interest, total cost, and a complete amortization schedule. All four modes (payment, affordability, refinance, rent-vs-buy) live in one app.
Are these rates accurate for my area?
The default rates are representative national averages updated quarterly. Actual rates vary by lender, credit score, loan-to-value and market conditions. The calculator auto-detects your city and shows the typical rate for your region — but you should always confirm with a licensed local broker or lender before committing.
Should I refinance my mortgage?
The classic rule of thumb is to refinance when the new rate beats your current rate by at least 0.75–1.0 percentage points and you plan to stay in the home long enough to recover the closing costs. The refinance mode does the math for you and tells you the exact month at which you break even.
How much house can I afford?
In the US lenders use the 28/36 rule (28% of gross income on housing, 36% on total debt). In Canada it's 32/40 (GDS / TDS). The affordability mode applies the right rule and shows you the maximum purchase price for your income, down payment, and rate.
Is the calculator really free?
Completely free, no signup, no email, no data shared. Ads on the page are served by Google AdSense and pay for the project. You can also install it as a free mobile app.
Can I install this as an app on my phone?
Yes. On Chrome and Edge tap the "Install Free App" button on this page. On Safari iOS use the share menu and select "Add to Home Screen." Once installed it runs full-screen, works offline, and behaves like a native app — no app-store account required.
Does this include property tax and insurance?
The headline payment is principal & interest only. Budget another 25–35% on top for property tax, insurance, PMI / CMHC, HOA / condo fees, and ongoing maintenance — see the "Hidden Costs" section above.
How does bi-weekly payment save money?
Accelerated bi-weekly equals 26 half-payments per year, which add up to 13 full monthly payments instead of 12. That extra payment goes straight to principal and typically shaves 4–7 years off a 30-year mortgage. The calculator shows the exact savings the moment you switch frequencies.
