Compare the multi-year economics of renting and buying
Renting is primarily a housing expense, while buying combines housing costs, financing, transaction costs, and an asset that may create equity. This calculator follows both paths year by year and subtracts estimated sale equity from ownership cash outflows.
Calculation Methodology & Assumptions
The calculator compares two complete monthly paths. Buying starts with the down payment and buyer closing costs, then tracks mortgage principal and interest, ownership cash costs, home value, selling costs, and the actual scheduled mortgage balance. Renting tracks annual rent increases, renter costs, and a monthly-compounded alternative investment that receives the initial cash not used to buy and each monthly cash-flow difference. Net ownership cost is ownership cash outflow minus net sale equity; the displayed advantage compares the buyer’s net sale equity and any owner investment with the renter’s investment balance.
Planning guide
What does the calculator compare?
It compares estimated financial positions over the selected period. It does not decide whether you should rent or buy, and it does not model personal preferences or every cost of moving.
How should I enter the home price and down payment?
Enter the expected purchase price and the cash down payment. The calculator treats purchase price minus down payment as the mortgage principal and keeps buyer closing costs separate.
What belongs in buyer closing costs?
Use an estimate for lender, title, appraisal, government, prepaid, and other purchase costs you expect to pay at closing. The amount is included once in the initial buying cash flow.
How are mortgage payments calculated?
The fixed-rate mortgage uses monthly principal-and-interest amortization. Each payment is split into interest and principal, and the year-end balance comes from the same monthly schedule used for the projection.
How are rent, taxes, and insurance changed over time?
Rent, property tax, and homeowners insurance use explicit annual growth assumptions. Rent steps up once per year; annual ownership amounts are paid monthly after their annual growth is applied.
What is included in maintenance?
Maintenance is modeled as a percentage of the estimated home value for each month. This is a planning allowance, not a prediction of the timing or size of actual repairs.
What happens when the home is sold?
At each year-end, the model estimates a sale price, subtracts selling costs calculated from that future sale price, and subtracts the actual remaining mortgage balance to calculate net sale equity.
What does the alternative investment balance mean?
It is a modeled account for cash not committed to the more expensive monthly housing path. The initial renter account receives the down payment and buyer closing costs, and monthly differences are invested symmetrically.
How should I interpret break-even?
Break-even is the first modeled year in which buying’s financial position exceeds renting’s under these assumptions. If it does not occur within the selected period, the calculator says so instead of inventing a year.
What should I stress-test?
Try lower appreciation, higher maintenance, different rent growth, higher mortgage rates, different selling costs, and a shorter stay. Also consider liquidity, mobility, reserves, property condition, and costs that are not modeled.
The US Consumer Financial Protection Bureau offers home-buying tools, HUD publishes home-buying guidance, and the Financial Consumer Agency of Canada explains mortgage decisions and costs.
Frequently asked questions
Does the calculator tell me whether to rent or buy?
No. It presents an estimate under the inputs you provide. Personal priorities, liquidity, mobility, risk tolerance, and local conditions may matter as much as the modeled result.
Is mortgage principal an expense?
Principal is a cash outflow and reduces the mortgage balance, which can increase equity. The calculator does not classify principal as a nonrecoverable ownership cost.
How is net sale equity calculated?
At each year-end, estimated sale price minus selling costs minus the scheduled remaining mortgage balance equals net sale equity. Selling costs are calculated from the future sale price.
What does the renter investment account represent?
It models the potential value of the down payment and buyer closing costs not committed to buying, plus monthly cash-flow differences, using the selected monthly-compounded return.
What if renting costs more each month?
The model is symmetric: when renter cash flow is higher, the difference is invested on the owner side. This avoids assuming that only renters can invest monthly savings.
Are appreciation and investment returns guaranteed?
No. They are planning assumptions used for illustration. Actual home prices and investment returns can be lower, higher, or negative.
Does the model include taxes or tax deductions?
No complex tax effects or deductions are included. Country selection provides regional context and currency guidance, not tax advice.
Why might break-even occur after the mortgage is paid off?
The selected comparison period can extend beyond the new loan term. Buying may still be compared with ongoing rent and the current mortgage’s remaining payments, so a later modeled crossover can be mathematically valid.
Trust and methodology
Results are educational estimates, not mortgage, financial, tax, legal, valuation, or housing advice. Assumptions and local costs can change substantially.