Financing
Rent vs Buy Calculator
Buying isn't automatically “throwing money away” on rent, and renting isn't automatically the cheaper choice. This compares the full net cost of each over the years you plan to stay — appreciation and equity on one side, the opportunity cost of your down payment on the other — with every assumption yours to set and every step shown.
The home
Owning costs
Renting
Time & opportunity
Net cost of buying $174,937
Net cost of renting $164,836
Compares total cost, not monthly. The result flips with your assumptions — nudge appreciation, rent growth, or years staying to see how sensitive it is.
Informational only, not professional advice. This is a pre-tax financial comparison built from your own assumptions about the future — it can't predict appreciation or rents, model your taxes, or price the non-financial reasons to rent or own.
Methodology
Both paths are put on the same footing — total cash out over the holding period, minus the assets you still hold at the end — following the standard rent-vs-buy framing (Investopedia: Renting vs. owning a home). Payments and payoff use the standard amortization formula (Investopedia: Amortization). The calculation:
- Upfront cash = down payment + buying closing costs
- Ownership costs = mortgage P&I + property tax + insurance + maintenance + HOA, summed year by year against the appreciating home value
- Net sale proceeds = home value at sale − remaining loan balance − selling costs
- Net cost of buying = upfront + ownership costs − net sale proceeds
- Net cost of renting = total rent (grown each year) − investment earnings on the upfront cash a renter doesn't tie up
- Lower net cost wins; the gap is how much cheaper it is over the period
Crediting the renter with earnings on the down payment — not just the buyer with equity at sale — is what keeps the comparison symmetric. Both sides end the period holding an asset (a sold house, or an invested portfolio), and the model counts each the same way. Because every input is an assumption about an unknowable future, the answer is best read as a sensitivity test: change the holding period or appreciation and watch how fast the verdict moves.
Assumptions and limitations
- The monthly cost difference isn't invested. The renter earns a return on the upfront cash, but neither side invests the month-to-month savings — a deliberate simplification that keeps the math transparent and slightly understates renting when it's much cheaper monthly.
- Pre-tax. No mortgage-interest or property-tax deduction, and no tax on investment gains — these can move the result if you itemize.
- Appreciation, rent growth, and investment return are future assumptions, not forecasts. Small changes compound over a long horizon.
- Insurance is held flat and HOA constant; property tax and maintenance scale with the home's value. No PMI is modeled for down payments under 20%.
- Non-financial factors — stability, mobility, and the meaning of ownership — aren't priced and can outweigh the dollar figure.
Last reviewed: July 2026
Frequently asked questions
How does a rent vs buy calculator decide which is cheaper?
It compares the total net cost of each path over the years you plan to stay, not the monthly payment. Buying's net cost is everything you pay to own — the upfront down payment and closing costs, then years of mortgage payments, taxes, insurance, and upkeep — minus what you get back when you sell, which includes your equity and any appreciation. Renting's net cost is the total rent you pay, minus what the money you didn't tie up in a down payment could earn if you invested it instead. Whichever net cost is lower wins. Framing both sides as 'money out minus what you end up holding' is the only fair way to compare them, because buying returns an asset at the end and renting doesn't.
Why does the down payment's opportunity cost matter?
Because a renter who doesn't buy still has that cash, and it can be invested. Ignoring this is the single most common way rent vs buy comparisons quietly favor buying: they count the buyer's equity at sale as a benefit but forget the renter's down payment could have grown in the market the whole time. This calculator credits the renter with the investment earnings on the upfront cash the buyer tied up, at a return rate you set. Set that rate to what you'd realistically earn — a conservative portfolio return, not zero, and not a boom year — because it directly changes the answer.
What's the biggest factor in the rent vs buy decision?
How long you stay. Buying carries large one-time costs — closing costs to purchase, then 5–6% in selling costs to leave — and those are spread over the years you own. Stay two years and they dominate; stay ten and appreciation and equity have time to overtake them. That's why the same home can favor renting over a short horizon and buying over a long one. Appreciation and rent-growth rates matter too, but they're assumptions about the future no one can know; the holding period is something you actually control, so it's the first lever to test.
What does this calculator leave out?
Two things worth naming. First, it doesn't invest the month-to-month cost difference on either side — it credits the renter only with earnings on the upfront cash, not on any monthly savings, so a scenario where renting is much cheaper monthly is modestly understated in renting's favor. Second, it uses pre-tax figures and doesn't model the mortgage-interest or property-tax deductions, which can lower the real cost of owning if you itemize. It also can't price the things that aren't financial: stability, freedom to move, or the pride and responsibility of ownership. Treat the number as one important input to the decision, not the whole of it.
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