A Deep Dive into Renting vs. Buying Over Time
Deciding whether to rent or buy a home is one of the biggest financial and lifestyle choices you’ll make. In this post, we’ll explore:
- How costs compare over different time horizons
- The influence of interest rates
- Inflation’s hidden impact on mortgage debt
- When you truly “break even”
- The effects of frequent buying and selling versus long-term ownership
- Risks and rewards of timing the property cycle
Renting vs. Buying Across Time Horizons
Your decision often hinges on how long you plan to stay in a property. Here’s a side-by-side look at renting and buying over common holding periods:
| Time Horizon | Renting Pros & Cons | Buying Pros & Cons |
|---|---|---|
| 1 Year |
• High flexibility • No equity built • Sink cost |
• Heavy upfront costs • Market risk if selling soon • Ownership feeling |
| 3 Years |
• Still mobile • Rent likely rises • No asset build |
• Hard to recoup purchase costs • Possible break-even only in hot markets |
| 5 Years |
• Cumulative rent adds up • Flexibility remains |
• Equity starts to accumulate • Potential for capital gain |
| 10 Years | • Rent inflation likely outpaces wage growth |
• Interest portion shrinks over time • Tax perks and gains compound |
| 25 Years | • Decades of rent payments with no return |
• Mortgage nearly paid off • Long-term appreciation likely high |
| 50 Years | • Lifetime of rent with zero asset creation |
• Mortgage gone • Housing cost limited to upkeep • Major net worth boost |
The Power of Interest Rates
Interest rates dramatically reshape the buying equation:
- Higher Rates: Monthly repayments spike, especially early on when interest dominates. Equity builds more slowly.
- Lower Rates: Purchasing becomes far more affordable. Fixed-rate loans lock in savings.
Renters feel rate shifts indirectly—landlords facing higher borrowing costs tend to raise rent, and more potential buyers stay renting, driving up demand.
Inflation: Mortgage Payments Become “Cheaper” Over Time
One overlooked advantage of fixed-rate home loans is that inflation erodes the real value of repayments:
- A $3,000/month payment in Year 1 could feel like $2,100 (in today’s dollars) by Year 10 if wages and prices rise.
- As your income grows with inflation, the mortgage takes up a smaller slice of your paycheck.
- Meanwhile, property values tend to keep pace with or outstrip inflation, improving your debt-to-asset ratio.
Example:
You buy for $800,000 with a $640,000 mortgage at 4% fixed.
Year 1
• Repayment: $3,000/month
• Salary: $100,000 → Repayment = 36% of income
Year 10 (3% salary inflation)
• Salary: ~$134,000 → Repayment = ~27% of income
• Home value (4% growth): ~$1,200,000
• Equity: ~$560,000
Finding Your Break-Even Point
Industry calculators often pinpoint the 5–7 year mark as when ownership overtakes renting in cost. Why does it take so long?
- Upfront Costs: Stamp duty, legal fees, inspections can total 5–6% of purchase price.
- Front-Loaded Interest: Early repayments pay mostly interest, not principal.
- Selling Expenses: Agent commissions (2.5–3%) and conveyancing add up.
- Rent Avoids These Costs: Pure operating expense, with no equity build.
Scenario Analysis: Selling Every 7 Years vs. Holding 25 Years
Let’s compare total transaction costs for an $800,000 home in NSW:
| Scenario | Stamp Duty (NSW) | Agent Fees (2.5%) | Other Move Costs | Total Transaction Costs |
|---|---|---|---|---|
| Sell & Buy Every 7 Years (4×) | ~$160,000 | ~$80,000 | ~$40,000 | ~$280,000+ |
| Own for 25 Years (1×) | ~$32,000 | $0 | ~$10,000 | ~$42,000+ |
Frequent trading can incur over $200K more in fees alone and resets your equity build regularly.
Market Cycles & Timing Risk
The “7-year cycle” is a guideline, not a guarantee. Modern cycles may span 15–18 years:
- Selling at a downturn and buying in a slump can wipe out gains.
- If you upgrade within the same market, downturn effects can offset each other.
- Moving between different regions risks misaligned cycles (e.g., Sydney slump vs. Brisbane boom).
Strategic Insight: Time in the market beats timing it. Riding out cycles maximizes long-term compound growth.
Conclusion
Renting makes sense if you need flexibility or plan to move within 5 years. Ownership starts to pay off after about 5–7 years and accelerates dramatically if you hold for 25+ years. Interest rates, inflation dynamics, transaction costs, and cycle timing all tilt the scales toward long-term holding for wealth creation.
So buy if your lifestyle allows it, and stay until it no longer makes sense!

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