Real (inflation-adjusted) mortgage cost
Inflation erodes the real cost of a fixed mortgage payment. Year 25's $3,500 payment is worth far less in today's dollars than year 1's.
Your scenario
Result
Real cost assumes inflation runs steady. Spikes (like 2022-2023) and dips (post-2008) move the answer.
Why a fixed mortgage payment shrinks in real terms
When you sign a Canadian mortgage, your nominal monthly payment is fixed for the term (typically 5 years). But every year, inflation erodes the purchasing power of that dollar. By year 25, a $3,500 payment is worth far less in today's purchasing power than year 1's — even though the nominal dollars haven't changed.
This is one of the quiet benefits of a long-amortization fixed-rate mortgage: future you pays back the loan with cheaper future dollars, while present you locks in today's home price.
The math in plain words
At 2.5% inflation, $1 today is worth roughly $0.54 in 25 years. So your year-25 payment of $3,500 is equivalent to about $1,889 in today's dollars. Sum the entire stream and the real total cost is meaningfully less than the nominal total.
Worked example — $3,500/mo over 25 years
- Nominal total payments: $3,500 × 12 × 25 = $1,050,000
- At 2.5% inflation, real total cost: ~$782,000
- Inflation erosion: ~$268,000 you don't really pay
- Year-25 payment in today's dollars: $1,889
This is why mortgages are powerful wealth-building tools even when the rate looks high in nominal terms.
Canadian inflation context
- Bank of Canada target: 2% (with 1-3% control range)
- 50-year average: ~3.5% (boosted by 1970s-1980s spike)
- 2000–2020 average: ~1.8%
- 2021–2023 spike: peaked above 8% in mid-2022
- 2024–2026 trend: back toward 2% target as policy tightened
The math here assumes steady inflation. Real outcomes vary — high-inflation periods erode the loan faster (good for borrowers, bad for savers).
The flip side — what inflation hurts
- Fixed-rate savings: a 4% GIC during 6% inflation loses 2% per year of real purchasing power
- Pensioners on fixed incomes: indexed pensions help, non-indexed don't
- Cash sitting in chequing: directly loses to inflation
- Wages that don't keep up: real income falls when inflation outpaces wage growth
Inflation hedges for Canadians
- Owning real estate — historically rises with or above inflation
- Equities — long-run returns include an inflation component
- Real Return Bonds — federally issued, principal indexed to CPI (discontinued for new issues but existing series still circulate)
- I-bonds, TIPS — US equivalents available via brokerage
- A fixed mortgage on a primary residence — the quietest hedge of all
Related
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