Rent or Buy Calculator

Rent is not “money thrown away” and a mortgage is not “an investment” — both are costs, and the cheaper one depends mostly on how long you will stay. Enter the home’s price, your loan terms, the rent on an equivalent place, and the years you realistically expect to stay, and this rent or buy calculator totals both paths honestly: every ownership cost in, every dollar of equity and appreciation back out.

The Only Honest Way to Compare: Total Cost Over Your Horizon

Every shortcut in this debate lies. "Rent is throwing money away" ignores that interest, taxes, insurance and maintenance are equally unrecoverable. "A mortgage payment is an investment" ignores that in the early years almost none of it is principal. The honest comparison — the one this calculator runs — totals each path's true cost over the same years. Renting's cost is the rent itself, rising with inflation. Buying's net cost is everything that leaves (down payment, closing costs, mortgage payments, property tax, insurance, maintenance, selling costs) minus everything that returns (the sale price less the remaining loan balance — your equity and appreciation, converted back to cash). Whoever's total is smaller wins for that horizon, and the horizon is the whole game: buying carries heavy fixed costs (roughly 2 percent in, 6 percent out) that need years of ownership to amortise, which is why short stays favour renting almost everywhere and long stays favour buying almost everywhere, with the crossover — the break-even year — set by local prices, rents and rates.

Worked Example: $450,000, Seven Years, 6.5%

The defaults: a $450,000 home, 20 percent down, a 6.5 percent 30-year mortgage ($2,275.44 a month on the $360,000 loan), rent of $2,200 a month on the equivalent place, both inflating at 3 percent. Over seven years: renting totals $202,289. Buying's outflows total $373,087 (down payment, closing, payments, tax, insurance, maintenance), the sale recovers $227,945 net of the remaining $325,498 balance, and after selling costs the net cost of buying is $178,349 — cheaper by $23,940. Now move the horizon, which is the calculator's real lesson: at five years renting wins by $1,242 (the transaction costs have not yet amortised), and at ten years buying wins by $75,376 (equity compounds while rent only climbs). Same house, same rates, three different answers — separated purely by how long you stay. Anyone who gives you a horizon-free verdict on renting versus buying is selling one of the two.

The Costs Each Side Prefers to Forget

Renters forget that rent is a price that resets: over 30 years at 3 percent growth, $2,200 becomes $5,340 a month, and the renter owns nothing at the end of the payments — the fixed-rate mortgage's great hidden asset is that its payment is the one housing cost that does not inflate. Owners forget the opportunity cost: the $90,000 down payment, invested instead at a 7 percent return, would grow to about $144,500 in seven years — the renter who invests the difference (down payment plus the monthly cost gap) narrows or reverses many comparisons, and this page's note flags that it does not model that discipline because so few renters actually practise it; if you will, subtract the invested difference's growth from the renting total. Owners also forget maintenance's variance: the 1 percent rule is an average of quiet years and roof-and-furnace years, and the landlord's true product is not the home but the transfer of that variance — a service worth real money to a household without reserves, and priced in the rent.

Non-Financial Terms of the Debate

The calculator prices the financial half; the other half is real and sometimes decisive. Buying buys control and stability — no landlord's sale or non-renewal can move you, the school district is yours as long as you pay, and the walls can be painted any colour a covenant allows. Renting buys mobility and optionality — a job across the country is a notice period, not a sale process; a neighbourhood mistake is a year, not a decade. Early-career households with uncertain geography should weight the rental side's option value heavily even when the arithmetic mildly favours buying; rooted households should notice that the mortgage's forced saving (the principal inside every payment, growing monthly) is the only savings plan most families never skip, which is a behavioural asset no spreadsheet in this hub can price but every retiree's balance sheet quietly records. The CFPB's Owning a Home guides walk the buying side's process and true costs in official detail.

Reading Your Own Break-Even Year

The most useful way to use this calculator is not once, at the defaults, but in a sweep: run your numbers at three, five, seven and ten years and find the stay length where the verdict flips — your break-even year, for your market and your rate. Three patterns to read in the sweep. If the flip comes before year four, buying is robust: even a somewhat shorter stay than planned leaves you ahead, and the purchase can absorb life's surprises. If it lands between five and eight — the worked example's territory — the decision is genuinely about your life: job stability, family plans and how much you value the non-financial terms are the real inputs, and the calculator has done its job by proving the money is close enough that they should decide. If the flip never arrives inside ten years, renting is not a consolation prize but the financially superior structure in your market, and the winning move is to rent unapologetically while investing the down payment and the monthly difference — the strategy that, in high price-to-rent cities, quietly builds more wealth than the purchase it is always apologising for. Re-run the sweep when rates move a point or your plans change by two years; the verdict is a function of both, and it expires faster than any other number in personal finance.

How Sensitive Is the Verdict? Testing the Assumptions

A calculator's assumptions deserve the same scepticism as its conclusions, so here is the worked example stress-tested. Appreciation at 0 percent (the home's price frozen for seven years): the sale recovers only the balance reduction, buying's net cost rises to about $276,000, and renting wins by roughly $73,000 — appreciation is doing heavy lifting in the base case, which is why flat-market cities flip the folklore. Rent rising at 5 percent instead of 3: renting's total climbs to about $215,000 and buying wins by roughly $37,000 — expensive rental markets punish staying a renter. The mortgage rate at 5 percent: the payment falls to about $1,933, buying's net cost over seven years drops to about $141,000, and buying starts winning from year four. The pattern across all three: the verdict is a local, current fact — about your city, your rate quote and your horizon — with a shelf life, not a philosophy. The inputs are the argument; change them honestly and the page will argue the other side with the same conviction.

Related Tools

More from the Finance Calculators hub: the Mortgage Calculator with Taxes and Insurance — the buying side's full monthly picture — the Home Loan Calculator, and the Mortgage Refinance Calculator for the loan you would improve later.

Frequently Asked Questions

What is the 5-year rule for buying a home?

The folk rule that buying only beats renting if you stay at least five years — a break-even shorthand from an era of lower rates and faster appreciation. The worked example shows its mechanics (the crossover here sits just past five years) and its fragility: at lower rates the crossover can arrive in year three, in a flat market year nine. The rule's durable core is the shape of the truth — transaction costs need years to amortise — while its number is whatever this calculator says for your prices, your rent and your rate.

Is the price-to-rent ratio a good shortcut?

As a market thermometer, yes: divide the home's price by the annual rent of an equivalent place (here 450,000 / 26,400 = 17). Below about 15, buying tends to win quickly; above 21, renting is stubbornly competitive even over long horizons, because the rent is cheap relative to the capital the purchase ties up. Coastal markets in the high 20s and 30s are where the ratio earns its keep — it warns that the local verdict may defy national folklore in both directions.

Should I count the mortgage interest deduction?

If you itemise, partially: the US deduction (on the first $750,000 of mortgage debt) refunds your marginal tax rate times the interest — worth perhaps a fifth to a third of the interest line for higher earners, and nothing at all for the large majority who now take the standard deduction. This calculator leaves it out (conservative for buying); if you reliably itemise with a high marginal rate, shade the buying cost down by your rate times the interest paid, which the amortization page on this hub totals for your exact loan.

What if I buy and then rent the place out when I move?

Then the comparison changes species: the home stops being housing and becomes a leveraged rental investment, judged by cap rate and cash flow against the alternative of selling and investing the proceeds — a different calculator's question (and landlording's costs, vacancies and management enter with it). Households that "couldn't sell" into accidental landlording usually discover the move's tax wrinkle too: the primary-residence capital-gains exclusion fades after three years out of the home. Decide as an investor, with investor arithmetic, not as a homeowner with a hope.

How does a future rate drop change the answer?

It improves the buying side retroactively — a refinance (priced on the companion page) cuts the remaining years' payments — while the renter's costs march on untouched, which is an underappreciated asymmetry: the buyer holds an option on falling rates, the renter holds exposure to rising rents. It cuts both ways in reverse (rates can rise, though the fixed payment insulates the buyer from exactly that), and either way the calculator's fixed-rate frame understates the buyer's flexibility rather than the renter's.