Mortgage
Calculate monthly mortgage payments, loan-to-value (LTV) and total interest for equal (annuity) or declining instalments.
Open calculatorRent vs buy
Compares buying a property with an annuity mortgage (plus monthly service/maintenance charges) against renting a comparable home and investing the down payment at your chosen return rate. At the end of the comparison horizon, the model contrasts net home equity (market value minus remaining mortgage balance) with the renter’s investment portfolio. When the price falls below the loan balance, equity is negative and the calculator shows the cash needed to close the loan on sale.
Purchase price of the home — excluding notary, transfer tax and renovation costs.
Down payment as a percentage of the purchase price — the remainder is financed via the mortgage.
%
Annual nominal interest rate on an equal-instalment (annuity) mortgage.
%
Total loan repayment term in years.
Fixed monthly ownership costs — building admin, maintenance reserve, property tax.
Monthly rent for a comparable property in the same neighbourhood.
Number of years over which to compare both scenarios (up to the loan term).
Assumed yearly percentage increase in the property’s market value.
%
Expected annual return if the renter invests the down-payment sum in deposits, bonds or funds.
%
Initial monthly outlay (buying)
4,311
Monthly mortgage payment
3,511
Total cash paid to own over horizon
647,329
Total cash paid in rent
420,000
Home equity at horizon (value minus loan balance)
470,487
Value of invested down payment
211,756
Net buyer position (equity minus running costs)
-46,843
Net renter position (portfolio minus rent paid)
-208,244
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Entry transaction costs (2% PCC transfer tax, notary, agency fee) and major refurbishments are not included in the baseline formula. Negative equity means selling at this horizon requires extra cash to clear the mortgage — that amount lowers the buyer’s net position.
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Educational estimate only. Not medical, tax, legal or financial advice.