Rent vs Buy Calculator

Use this rent vs buy calculator to compare the total cost of renting against buying a home over your chosen period and see which option costs less.

Monthly rent US$

Home price US$

Down payment US$

Mortgage rate %

Mortgage term years

Years to compare years

Total cost of renting —

Total cost of buying —

Renting minus buying —

We always strive to use the latest data for every variable so our results and reports are as accurate as possible. Even so, errors are possible — you should not rely on this tool or its report alone, and we accept no liability for any decision made based on it.

What it does

The Rent vs Buy Calculator compares the total cash cost of renting a home for a chosen number of years against the cash cost of buying the same home over the same window: your deposit plus every mortgage payment you make.

Data sources & parameters

This calculator uses standard financial formulas and runs entirely in your browser. It needs no external rate data — your result is computed only from the values you enter above.

The formula

total_rent = rent × 12 × years; buy = deposit + monthly_payment × 12 × years, where monthly_payment amortises (home_price − deposit) over 30 years

How it works

Renting cost is the monthly rent times twelve times the years. Buying cost is the deposit plus the mortgage payments made during the window, based on a standard 30-year amortisation at the rate you enter. The difference shows which path uses less cash over that period.

Where it is used

Deciding whether to keep renting or buy now
Seeing how the comparison shifts with the length of stay
Testing the effect of a larger deposit or a lower mortgage rate

Worked example

Renting at $1,500.00 a month for 10 years costs …. Buying a $300,000.00 home with a $60,000.00 deposit at 6% costs … in cash over the same period, a difference of ….

What the rent vs buy calculator does

Comparing a monthly rent with a monthly mortgage payment is misleading, because the two hide very different things. The rent vs buy calculator compares the total cash you would spend renting over a chosen number of years with the total cash you would spend buying the same home over the same window.

The arithmetic is the same in any country and currency. You enter your rent, the price of the home you are considering, your deposit, the mortgage rate on offer, and how long you expect to stay.

How the comparison is built

Your monthly rent is multiplied by twelve and then by the number of years you plan to compare, giving the total rent you would pay during the period.

Buying has two parts: the deposit, paid upfront, and the mortgage payments you make during the comparison window. The calculator amortises the loan (the home price minus your deposit) over a standard 30-year term at your rate, giving a fixed monthly payment, which it multiplies by the number of months in your comparison period. Adding the deposit gives the total cash cost of buying over that window.

The difference is the renting cost minus the buying cost. A negative number means renting costs less cash over the period you chose; a positive number means buying costs less.

The inputs

Monthly rent is the recurring cost of renting. The calculator applies today's rent to every year, so rising rents would make renting more expensive than shown.
The home price drives the size of your loan and therefore your payments.
A larger deposit shrinks the loan and lowers each payment, but it is cash committed upfront, and the calculator counts it in full on the buying side.
The mortgage rate has the largest effect on the cost of buying; even a one-point change can move total payments substantially over a long comparison.
Years to compare is how long you expect to stay, and it decides more than any other input which way the comparison tips.

Why the length of stay matters most

Over a short window, buying tends to look expensive: the deposit is a large sum against just a few years of payments. Renting, with no upfront lump sum, often costs less cash in those first years.

Over a longer window, the deposit weighs less against the years of payments. If your monthly mortgage payment is below your rent, each extra year narrows the gap the deposit created, and at some point buying costs less cash. This matches the conventional advice that buying rarely pays off unless you stay put for several years.

What the calculator leaves out

This cash-flow view does not count the equity a buyer builds. Each mortgage payment that reduces the loan turns cash into ownership, and at the end of the period the buyer holds an asset while the renter holds nothing. The tool also leaves out changes in the home's value, which over long periods often favour buying, and the transaction costs, maintenance, insurance, and taxes of ownership, which push the other way.

Renting has its own uncounted value: flexibility. A renter can move for a job, a relationship, or a change of heart without the cost and delay of selling, and for many people that is worth a great deal.

Exploring scenarios

Raise the years to compare and see how long you have to stay before buying pulls ahead on cash alone.
Increase your deposit to see how much it lowers the total buying cost.
Move the mortgage rate up and down to see how sensitive the buying side is to borrowing costs.
Try a higher rent to reflect a rising market and watch renting lose ground over long horizons.

The pattern tells you more than any single figure about where your own break-even lies. Then add what the calculator cannot measure: how long you expect to stay, how much you value the flexibility of renting, whether you want the responsibility of ownership, and how confident you are about the local property market.

This article is general information only and is not financial advice.

About This Rent vs Buy Calculator

Use this rent vs buy calculator to get an instant estimate based on the figures you enter. Adjust the inputs above to match your situation, or browse all our calculators to plan your next step.

Frequently asked questions

How does the rent vs buy calculator work?

It adds up the cash you would spend renting over your chosen period (the monthly rent times twelve times the number of years) and compares it with the cash cost of buying, which is your deposit plus every mortgage payment made during the same window. The result shows which path uses less money over that period.

Does the calculator include the equity I build by buying?

No. This is a pure cash-flow comparison. It counts the money that leaves your account, not the ownership stake you gradually build or any change in the home's value. Because buyers keep the equity while renters keep nothing, the long-term case for buying is usually stronger than the cash figures alone suggest.

Why does buying often look expensive over a short period?

Upfront costs such as the deposit weigh heavily when spread over just a few years, and buying only catches up over time if the monthly payment is below the rent. The shorter your stay, the harder it is for buying to beat renting on cash alone, which is why the length of stay is the most important input.

What mortgage term does the calculation assume?

The monthly payment is based on a standard 30-year amortisation of the loan, which is the loan amount after your deposit. You still choose how many years to compare, but the payment size is set as if the loan runs for 30 years, matching how most home loans are structured.

Should I rent or buy based on this result?

Treat the result as one input, not a verdict. It captures cash outlay clearly but leaves out equity, price growth, maintenance, and the flexibility renting offers. Use it to see how the balance shifts with your deposit, rate, and length of stay, then weigh those factors against your own plans.

Is my data kept private?

Yes. The calculation runs entirely in your browser. Nothing you enter is uploaded, stored, or shared with anyone.

About the author

Written and reviewed by

Taha Kheirandish

Economics student and independent researcher

Taha Kheirandish reads tax codes the way other people read maps — to find out where a system actually leads, not where it claims to go.

He is an economics student, and his work here is comparative by design. A pension deferral bonus in Quebec, a commuting allowance in Germany, a rent-increase ceiling in the Netherlands: each is a decision a government made about how money should move, and each reads differently once you set it beside eight others. He builds and checks these calculators across nine markets from primary sources — the regulation rather than a summary of it, the ministry’s own circular rather than a news item quoting it.

That is the editorial standard of the site as well as his habit. Every rate, threshold and bracket here carries the document it was read from and the date it takes effect, and gets re-checked when the law moves rather than when someone happens to notice.

He is a researcher, not a licensed adviser, and nothing on this site is personal financial advice. It is arithmetic done carefully with its sources shown — so that you can check it, and take it to someone who is.

View profile LinkedIn Instagram YouTube