The Rent vs Buy Calculator compares the total cost of renting a home with the total cost of buying over a chosen horizon. Enter rent, rent growth, insurance, down payment, mortgage terms, taxes, maintenance, appreciation, and how long the household stays, and the Rent vs Buy Calculator returns cumulative costs each way plus the break-even year where buying becomes cheaper under those assumptions.
This is a decision tool, not a price quote. Small changes in appreciation, rent growth, or the planned move date can flip the winner. State every assumption on the results screen so the comparison stays honest.
*These results are estimates for information only, not financial, tax, or real-estate advice. Outcomes depend heavily on the horizon, home appreciation, rent growth, interest rate, and cost assumptions entered; change those inputs and the break-even year can move by several years.*
Compare renting and buying a home
The Rent vs Buy Calculator compares renting and buying by summing each path's cash costs over the same number of years, then adjusting the buy side for equity and sale proceeds at exit. Total cost over the horizon is the figure that answers which path used more cash after those adjustments.
Renting spends cash on rent and renter's insurance while the down payment that was not used can stay invested. Buying spends the down payment, then mortgage principal and interest, property tax, insurance, and maintenance, and later recovers equity and any appreciation net of selling costs when the home is sold. The Rent vs Buy Calculator puts both ledgers on one timeline so year-by-year cumulative cost can be compared.
Transaction costs at purchase and sale matter. Ignoring closing costs makes buying look cheaper too early; including them pushes break-even later.
Add up the cost of renting
The Rent vs Buy Calculator adds up the cost of renting as growing rent plus renter's insurance, minus an opportunity credit for investing the down payment that buying would have required. Rent growth compounds the annual rent; insurance is a recurring cash cost.
Example path: rent starts at $2,000 per month ($24,000 per year) and grows 3% per year. Year-1 rent is $24,000; year-2 rent is $24,000 x 1.03 = $24,720. Over 10 years the sum of growing rent alone is far larger than 10 x $24,000 because of that growth. Adding renter's insurance each year raises the rent-side total. If a $60,000 down payment would have been required to buy, the rent path can credit investment growth on that $60,000 at a stated after-tax return; that credit reduces the net cost of renting in the model.
The Rent vs Buy Calculator shows rent, insurance, and the down-payment investment credit as separate lines so none of those pieces is buried.
Add up the cost of buying
The Rent vs Buy Calculator adds up the cost of buying as the down payment plus the stream of mortgage principal and interest, property tax, homeowners insurance, and maintenance, then subtracts equity built and home appreciation and adds selling costs at exit. Buy-side cost is therefore cash out the door net of what is recovered when the home is sold.
Mortgage payments follow standard amortization at the loan rate and term. Property tax and insurance often sit in escrow; maintenance is an owner cost renters do not pay. Example fragments: a $300,000 price with 20% down means $60,000 cash at purchase and a $240,000 loan; monthly principal and interest on that loan at a stated rate is fixed for a fixed-rate mortgage, while tax and insurance can rise. At exit, remaining loan balance is paid from sale proceeds; equity and appreciation reduce net buy cost, while agent commissions and closing costs raise it.
Appreciation is an assumption, not a promise. The Rent vs Buy Calculator applies the appreciation rate entered; stress-test 0% and lower rates before treating one run as decisive.
Find the break-even year
The Rent vs Buy Calculator finds the break-even year as the first year when cumulative buy-side net cost falls below cumulative rent-side net cost. Break-even answers how long the household must stay for buying to win under the stated assumptions.
Early years often favor renting once down payment and closing costs are counted, because those cash hits arrive immediately. Later years can favor buying when equity builds and rent keeps rising. If cumulative buy cost drops below cumulative rent cost in year 8, break-even is year 8 for that scenario. Moving in year 3 can leave buying more expensive even when a 15-year horizon would have favored owning.
Change rent growth, appreciation, or the mortgage rate and break-even moves. The Rent vs Buy Calculator should print those assumptions next to the break-even year so the decision stays tied to inputs the user can defend.
Frequently asked questions
How does rent vs buy comparison work?
Rent vs buy comparison totals the cash cost of renting and the net cash cost of buying over the same horizon, then finds when buying becomes cheaper. The Rent vs Buy Calculator reports both cumulative paths and the break-even year under the assumptions entered.
What costs belong on the rent side?
Rent-side costs include rent (often growing each year) and renter's insurance, with an optional credit for investing the down payment not spent on a purchase. The Rent vs Buy Calculator lists those components separately.
What costs belong on the buy side?
Buy-side costs include down payment, mortgage principal and interest, property tax, insurance, maintenance, and selling costs, reduced by equity and appreciation at exit. The Rent vs Buy Calculator amortizes the loan and applies the appreciation rate entered.
What is the break-even year?
The break-even year is the first year cumulative buy net cost falls below cumulative rent net cost. The Rent vs Buy Calculator reports that crossover for the scenario. Short stays often favor renting; long stays can favor buying when assumptions hold.
Why do assumptions matter so much?
Appreciation, rent growth, interest rates, taxes, and the move date drive the totals. Changing any one of them can move break-even by years. The Rent vs Buy Calculator is only as reliable as the inputs stated beside the result.
Does buying always win over long horizons?
Buying often looks better over long horizons when appreciation and rent growth are positive, but high rates, high maintenance, weak appreciation, or large transaction costs can keep renting ahead. Run more than one scenario.
How does this relate to rental property and mortgage tools?
This page decides whether to rent or buy a primary home. The Rental Property Calculator analyzes an investment property's income return. The Mortgage Calculator sizes payment and amortization for the buy side in more detail on QuickCalculators.
Summary
The Rent vs Buy Calculator sums growing rent and insurance (net of down-payment investment credit) against down payment, mortgage, tax, insurance, maintenance, and exit costs net of equity and appreciation. Break-even is the year cumulative buy cost falls below cumulative rent cost, and that year moves when rent growth, appreciation, rates, or horizon change.
Early years often favor renting after closing costs; longer stays can favor buying when the assumptions hold. These results depend on the inputs entered and are estimates for information only, not real-estate advice.