How long do I need to stay for buying to make sense?

There's no universal number. It depends on your down payment, mortgage rate, closing costs, and local price trends. Run the comparison at a shorter and a longer horizon than you expect to see how sensitive the answer is.

Does the rent-vs-buy comparison include home equity or appreciation?

The site's default comparison is a cash-flow comparison — total rent paid versus total cash spent on a down payment and mortgage payments. It does not add back home equity built or price appreciation unless you account for it separately, so a negative 'buying costs more' result can still leave you owning an asset with resale value.

Why does the calculator's mortgage payment look unusually high?

The site's rent-vs-buy model amortizes the loan fully within your chosen comparison period, not over a standard 30-year term. A 7-year comparison period means the payment shown pays off the loan in 7 years, which is higher than a real 30-year mortgage payment on the same loan. For a realistic monthly payment on a full-term mortgage, use the mortgage calculator directly and separately compare that payment to rent.

What costs does a basic rent-vs-buy comparison typically leave out?

Property taxes, insurance, maintenance, and HOA fees on the buying side, and renter's insurance on the renting side, are commonly excluded from a basic model. Add a realistic estimate of these for your specific situation before treating the raw output as the full picture.

Housing decision

Should I rent or buy?

The honest answer is "it depends on how long you'll stay" — and the comparison flips at a specific crossover point. Here's a worked example at two different time horizons, plus a modeling quirk worth knowing before you trust the number.

The decision in one line

Buying has larger upfront costs — a down payment and closing costs — that renting doesn't. Those costs need time to be offset by paying down principal, so a short expected stay tends to favor renting, and a long one tends to favor buying. The right question isn't "which is cheaper" in the abstract, it's "at my expected time horizon, which is cheaper."

Worked example: $2,200 rent vs. a $450,000 home

$2,200/month rent compared against a $450,000 home with a $90,000 down payment at 6.5%, over two different comparison periods:

	7-year horizon	15-year horizon
Total rent paid	$184,800	$396,000
Down payment + mortgage payments	$539,047	$654,478
Rent cost minus buying cost	−$354,247	−$258,478

In both cases the raw cash comparison favors renting — but the gap narrows sharply as the horizon lengthens, from about $354,000 at 7 years to about $258,000 at 15 years, because the same down payment and loan get amortized over more years. Note what's missing from the "buying cost" figure: it's cash paid out, not net cost, since it doesn't subtract any home equity built or price appreciation. A buyer in this example still owns a home worth roughly what they paid (plus or minus market movement) at the end of the period — this comparison only tells you the cash-flow side of the decision.

The modeling quirk to know about

This site's rent-vs-buy comparison amortizes the mortgage fully within your chosen comparison period — a 7-year comparison pays off the loan in 7 years, not 30. That's why the monthly mortgage payment implied above ($5,346/month at 7 years) is much higher than a real 30-year mortgage payment on the same loan would be. This is a deliberate simplification for an apples-to-apples "total cash out the door over N years" comparison, but it means the payment number is not a realistic monthly budget figure. For that, use the mortgage calculator directly with a full 30-year term and compare that payment to rent separately.

How to decide

Run the comparison at your realistic expected time horizon, not a round number.
Rerun it at a shorter and longer horizon to see how sensitive the answer is to your assumption.
Add a real estimate of property tax, insurance, maintenance and HOA fees for the specific home you're considering — these aren't in the basic model.
Separately check a realistic 30-year (or your actual target term) mortgage payment against your monthly budget using the mortgage calculator.
Remember the buying-cost figure here is cash spent, not net cost — home equity and any appreciation aren't subtracted out.

Run your own rent vs. buy numbers ↗ Check a realistic mortgage payment ↗

Frequently asked questions

Should I rent or buy?: It depends most heavily on how long you plan to stay. Buying carries larger upfront costs that need years to be offset by paying down principal, so a short expected stay tends to favor renting and a long one tends to favor buying — run the comparison at your actual expected time horizon, not a generic default.
How long do I need to stay for buying to make sense?: There's no universal number. It depends on your down payment, mortgage rate, closing costs, and local price trends. Run the comparison at a shorter and a longer horizon than you expect to see how sensitive the answer is.
Does the rent-vs-buy comparison include home equity or appreciation?: The site's default comparison is a cash-flow comparison — total rent paid versus total cash spent on a down payment and mortgage payments. It does not add back home equity built or price appreciation unless you account for it separately, so a negative 'buying costs more' result can still leave you owning an asset with resale value.
Why does the calculator's mortgage payment look unusually high?: The site's rent-vs-buy model amortizes the loan fully within your chosen comparison period, not over a standard 30-year term. A 7-year comparison period means the payment shown pays off the loan in 7 years, which is higher than a real 30-year mortgage payment on the same loan. For a realistic monthly payment on a full-term mortgage, use the mortgage calculator directly and separately compare that payment to rent.
What costs does a basic rent-vs-buy comparison typically leave out?: Property taxes, insurance, maintenance, and HOA fees on the buying side, and renter's insurance on the renting side, are commonly excluded from a basic model. Add a realistic estimate of these for your specific situation before treating the raw output as the full picture.

Source note: Figures above are computed illustrations from entered assumptions, not a forecast. All calculations happen in your browser — nothing you enter is sent to a server or stored. This is educational financial information, not a housing recommendation.