Interest rates have a dramatic effect on what you can afford. Each 1% increase in mortgage rates reduces your purchasing power by approximately 10%. If rates climb from 4.5% to 5.5% while you wait, a buyer who could afford a $500,000 home may now qualify for only $450,000, even if their income has not changed. You can track current rates on the Bank of Canada rates page.

Rate movements are unpredictable, which means delaying your purchase is a gamble in both directions.

Every month you rent is money that builds your landlord's equity instead of your own. If you are paying $2,000 per month in rent, that is $24,000 per year, or $48,000 over two years, with nothing to show for it at the end. A mortgage payment, by contrast, splits between interest and principal repayment. Even in the early years when interest dominates, a portion of every payment reduces your loan balance. Over five years of ownership, you could build $50,000 to $80,000 in equity through principal repayment alone, plus any appreciation in the home's value.

Despite the costs of delay, there are valid reasons to hold off. If your credit score is below 680, spending time improving it can help you qualify for a better rate, saving thousands over your mortgage term. If you are close to the 20% down payment threshold, waiting a few months to cross that line eliminates the CMHC insurance premium entirely, a savings of tens of thousands of dollars. Unstable employment or the possibility of relocating within a few years also argues for patience. Rushing into a purchase you cannot comfortably afford is always worse than waiting strategically with a clear savings plan.