Calculators
Niagara Mortgage Payment & Closing Cost Calculator
Pick your Niagara municipality, price and down payment to see the payment, the default insurance premium and its 8% PST, land transfer tax, property tax and the cash you need on closing day.
Reviewed November 13, 2026 · Indicative figures, OAC
What this calculator shows
Most online mortgage calculators stop at the principal and interest. A Niagara purchase has more moving parts: the default insurance premium on anything under 20% down, the 8% Ontario sales tax on that premium that must be paid in cash, the provincial land transfer tax and first-time buyer refund, legal costs, and a property tax bill that changes noticeably from one municipality to the next. This calculator puts all of them on one screen and uses the same Canadian semi-annual compounding a lender uses for fixed rates.
- Municipal land transfer tax in Niagara
- $0
- PST on the insurance premium
- 8%, cash
- First-time buyer LTT refund
- up to $4,000
- Lawyer, title and disbursements
- about $1,850
The inputs
- Transaction type. Buying, renewing or refinancing. Closing-cost lines apply only to a purchase.
- Municipality. Sets the default benchmark price and the approximate effective residential tax rate for that town.
- Purchase price and down payment. The down payment cannot go below the federal minimum for the price you enter.
- Amortization. 25 years, or 30 years if you are a first-time buyer, buying a newly built home, or putting 20% or more down.
- Payment frequency. Monthly, accelerated bi-weekly or bi-weekly.
- Rate. Pre-filled from the indicative rate board for your down-payment tier; edit it to match a quote.
- First-time buyer and new-build toggles. Unlock the land transfer tax refund and the 30-year insured amortization.
How the numbers are calculated
Down payment and loan-to-value
Minimum down payment = 5% of the first $500,000 + 10% of the portion from $500,000 to $1,499,999. At $1,500,000 and above the minimum is 20% and the mortgage cannot be insured. Loan-to-value (LTV) = (price − down payment) ÷ price.
Default insurance and the 8% PST
With less than 20% down the base loan is multiplied by the insurer's premium: 2.80% at 80.01%–85% LTV, 3.10% at 85.01%–90%, 4.00% at 90.01%–95%, plus 0.20% when an insured loan is amortized over 30 years. The premium is added to the mortgage. Ontario then charges 8% PST on the premium (premium × 0.08), and that amount cannot be financed: it is paid through your lawyer on closing.
Payment
Monthly periodic rate i = (1 + r/2)1/6 − 1, where r is the annual rate as a decimal. Monthly payment = P × i ÷ (1 − (1 + i)−n), where P is the insured mortgage and n is the amortization in months. Accelerated bi-weekly = monthly ÷ 2, paid 26 times a year. Bi-weekly = monthly × 12 ÷ 26.
Carrying cost
Monthly property tax = price × municipal tax rate ÷ 12. The calculator adds a heating estimate of $125 a month, the figure lenders commonly use, to give a total monthly carrying cost.
Land transfer tax and cash to close
Ontario land transfer tax is charged in brackets: 0.5% up to $55,000; 1.0% from $55,000 to $250,000; 1.5% from $250,000 to $400,000; 2.0% from $400,000 to $2,000,000; 2.5% above $2,000,000. First-time buyers get up to $4,000 back. No Niagara municipality charges a second, municipal land transfer tax. Cash to close = down payment + land transfer tax after any refund + PST on the premium + about $1,850 for lawyer, title insurance and disbursements.
Stress-test income
Qualifying rate = the higher of 5.25% or your rate + 2.00%. The calculator recomputes the payment at that rate and divides the housing costs (qualifying payment + property tax + heat) by 39%, the maximum gross debt service ratio on an insured file, to show the minimum household income.
Worked example: first-time buyer, $485,000 in Welland
A first-time buyer puts the minimum down on a $485,000 Welland home, chooses a 30-year amortization and an indicative insured 5-year fixed rate of 4.29%.
| Line | Calculation | Amount |
|---|---|---|
| Minimum down payment | 5% × $485,000 | $24,250.00 |
| Base loan (95.00% LTV) | $485,000 − $24,250 | $460,750.00 |
| Insurance premium | (4.00% + 0.20%) × $460,750 | $19,351.50 |
| Insured mortgage | $460,750 + $19,351.50 | $480,101.50 |
| Monthly payment | 4.29%, 360 months | $2,362.42 |
| Accelerated bi-weekly | $2,362.42 ÷ 2 | $1,181.21 |
| Property tax | $485,000 × 1.32% ÷ 12 | $533.50 |
| Total monthly carrying cost | payment + tax + $125 heat | $3,020.92 |
| Land transfer tax after refund | $6,175 − $4,000 | $2,175.00 |
| PST on premium (cash) | 8% × $19,351.50 | $1,548.12 |
| Lawyer, title, disbursements | budget | $1,850.00 |
| Cash needed on closing | down + LTT + PST + legal | $29,823.12 |
The qualifying rate is 6.29% (4.29% + 2.00%), which gives a qualifying payment of $2,943.32. Housing costs at that rate are $2,943.32 + $533.50 + $125 = $3,601.82 a month, so a household income of roughly $110,825 is needed to stay within a 39% GDS.
A repeat buyer of the same resale home is limited to 25 years: the premium drops to 4.00% ($18,430), the mortgage is $479,180, the payment rises to $2,596.48, and the cash PST is $1,474.40.
Property tax across the 12 municipalities
Tax rates below are approximate effective residential rates; confirm with the municipality's current tax rates before you rely on them. The spread matters because tax sits inside your GDS ratio. On the same $485,000 home, Fort Erie's rate of about 1.68% works out to $679 a month, while Grimsby's rate of about 1.15% would be $464.79: a difference of about $214 a month that lenders count against your income.
| Municipality | Benchmark price | Approx. tax rate | Tax / month | Minimum down | Ontario LTT |
|---|---|---|---|---|---|
| St. Catharines | $530,000 | ~1.26% | $556 | $28,000 | $7,075 |
| Niagara Falls | $565,000 | ~1.22% | $574 | $31,500 | $7,775 |
| Welland | $485,000 | ~1.32% | $534 | $24,250 | $6,175 |
| Grimsby | $725,000 | ~1.15% | $695 | $47,500 | $10,975 |
| Fort Erie | $485,000 | ~1.68% | $679 | $24,250 | $6,175 |
| Lincoln (Beamsville, Vineland, Jordan) | $695,000 | ~1.18% | $683 | $44,500 | $10,375 |
| Thorold | $525,000 | ~1.30% | $569 | $27,500 | $6,975 |
| Niagara-on-the-Lake | $865,000 | ~1.08% | $779 | $61,500 | $13,775 |
| Pelham (Fonthill, Fenwick) | $795,000 | ~1.21% | $802 | $54,500 | $12,375 |
| Port Colborne | $475,000 | ~1.48% | $586 | $23,750 | $5,975 |
| West Lincoln (Smithville) | $660,000 | ~1.19% | $654 | $41,000 | $9,675 |
| Wainfleet | $635,000 | ~1.28% | $677 | $38,500 | $9,175 |
Benchmark prices from Niagara Association of REALTORS® HPI composites (rounded); tax rates are approximate effective residential rates; confirm with the municipality. No municipal land transfer tax applies anywhere in Niagara.
What the calculator does not include
- Condo fees: lenders count 50% of them in GDS, so add them if you are buying a condo or townhouse with a fee.
- Variable-rate compounding: some variable mortgages compound monthly, so a lender's figure can differ by a few dollars.
- New-home items: HST rebates, development charges and builder adjustments. Confirm eligibility and timing with your real estate lawyer.
- Rural add-ons such as water potability and flow tests or a septic inspection ($400–$800).
- Your credit, income documents and the property itself, which only a full application can assess.
To see how much you can borrow rather than what a given price costs, use the affordability and stress test calculator. The full closing-cost breakdown is in our Niagara closing cost guide, and the 30-year rules are explained in 30-year amortization rules in Ontario.
Next steps
- Save your scenario. Copy the calculation link; it reopens with your exact inputs.
- Compare towns. Switch the municipality to see how tax changes the carrying cost and the income needed.
- Send it to us. Use the form below or the pre-approval page to have an FSRA-licensed agent check the numbers against real lender criteria and hold a rate for up to 120 days, lender-dependent.
Frequently asked questions
Why is the PST on mortgage insurance not added to my mortgage?
Ontario charges 8% provincial sales tax on the default insurance premium, and lenders cannot add that tax to the loan. The premium itself is financed, but the PST is collected in cash by your real estate lawyer on closing. On a $460,750 loan at a 4.20% premium, that is $1,548.12.
Do Niagara buyers pay a municipal land transfer tax?
No. Only the provincial Ontario land transfer tax applies anywhere in the Niagara Region. Toronto charges a second, municipal tax, but no Niagara municipality does. On a $485,000 purchase the provincial tax is $6,175, or $2,175 after the full $4,000 first-time buyer refund.
How does the calculator work out my monthly payment?
It uses the Canadian convention for fixed rates: interest compounds semi-annually, so the monthly rate is (1 + r/2)^(1/6) − 1. The payment is P × i ÷ (1 − (1 + i)^−n). For example, $500,000 at 4.29% over 25 years is about $2,709 a month, and over 30 years about $2,460.
Can I choose a 30-year amortization with less than 20% down?
Yes, if you are a first-time buyer or you are buying a newly built home. The insurer adds 0.20% to the premium for the 30-year term. Repeat buyers of resale homes with less than 20% down are limited to 25 years.
Are the property tax figures exact?
No. They are approximate effective residential rates for each municipality, applied to the price you enter. Your actual bill depends on the assessed value and the current year's rates, so confirm with the municipality's current tax rates.
Is the result a mortgage approval?
No. It is an estimate based on indicative rates, on approved credit. Rates change daily, and approval depends on your income, credit, down payment source and the property. A pre-approval with a licensed agent is the next step.
Pre-approval & rate review
Get your Niagara mortgage numbers checked
Tell us where you are buying or what you owe. We reply by email, usually within one business day, with options from across the lender tiers.
- A licensed advisor reviews your numbers against A-lenders, Ontario credit unions and alternative lenders.
- Rate holds of up to 120 days on purchases and renewals (lender-dependent).
- On prime files the lender pays the brokerage, so there is no fee to you; any fee on alternative or private files is disclosed in writing first.
- Nothing goes to a lender or credit bureau until you say so.
Prefer email? Write to hello@mortgageniagara.com.