Rent vs. Buy: The Honest Version of the Math
Rent is not "throwing money away," and a mortgage payment is not pure saving — most of it, early on, is interest, taxes, insurance, and upkeep. The comparison done properly, including the costs each side prefers to forget.
Published · Home & Mortgage · 1 min read
The rent-versus-buy debate is fought with two dishonest slogans. "Rent is throwing money away" ignores that most of an early mortgage payment is also money you never see again. "The market beats housing" ignores leverage and the fact that you have to live somewhere. The honest comparison is duller and more useful: total unrecoverable costs on each side, plus what the difference could earn elsewhere.
The owner's unrecoverable costs
Only principal builds equity. The rest of ownership is consumption, just like rent:
- Mortgage interest — the bulk of early payments on any long loan;
- Property tax and insurance — forever, even after payoff;
- Maintenance — averaging roughly 1–2% of home value a year, lumpy and unbudgeted;
- Transaction costs — several percent to buy, more to sell; amortized over a short stay they dwarf everything else, which is why short horizons favor renting almost automatically;
- The down payment's forgone return — $80,000 in equity is $80,000 not compounding in an index fund.
The renter's side of the ledger
Rent is the obvious cost — plus renters insurance and the exposure everyone underweights: rent grows. A fixed-rate owner's P&I is frozen for decades while rents compound; twenty years in, this single fact drives most of ownership's historical wins. The renter's counterweight is flexibility (career moves, family changes, neighborhood mistakes cost a lease, not a sale) and the discipline-dependent assumption that the monthly savings actually get invested rather than absorbed.
What usually decides it
Horizon first: under roughly five years, transaction costs make renting the default winner. Past that, the answer turns on local price-to-rent ratios, your tax situation, and the appreciation and investment-return assumptions you feed the model — which is precisely why it should be a model, not a slogan. The rent vs. buy calculator runs both sides' full cost stacks over your horizon with assumptions you control — and shows how the verdict flips as you move them, which is the real lesson.
Run your own numbers
More on home & mortgage
- What One Extra Mortgage Payment a Year Actually Does
- Mortgage Points: Prepaying Interest and the Break-Even That Decides It
- Biweekly Mortgage Payments: A Good Trick You Should Not Pay For
This article is general education, not tax, legal, investment, or financial advice. Figures used in examples are illustrations, not quotes or predictions. For decisions that depend on your full situation, talk to a qualified professional.