Calculator details
Enter your values below. Use the information icon beside any field for guidance.
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Use the information icons beside each input to see exactly what the field means and what value to enter.
Your results
Estimated results based on the values and assumptions you entered.
Estimate
Calculator-specific details based on your current inputs
Formula & calculation method
The model simulates mortgage amortization, home appreciation, rent growth, ownership-cost growth, selling costs and the renter's alternative investment balance. Buyer net equity at the horizon is compared with the renter investment balance.
Formula version 3.0 · Intermediate calculations use full precision; displayed values are rounded for readability.
Compare renting-and-investing with buying-and-building-equity over a chosen horizon instead of comparing rent with mortgage payment alone.
What this calculator helps you decide
A fair comparison includes down payment opportunity cost, mortgage balance, appreciation, rent growth, ownership costs, selling costs and investment return. Change those assumptions one at a time because they drive the outcome.
A housing calculation is strongest when it shows what is building equity and what is simply a cost. Read the rent vs buy calculator output with that distinction in mind before comparing it with another housing option.
Start with the right inputs
Use the values shown in the calculator as the working assumptions. The calculator returns the result shown in the result panel. Enter figures from the same point in time and use one currency throughout; mixing an old balance with a new rate or a monthly figure with an annual figure can make an otherwise correct formula answer the wrong question. This interpretation applies specifically to the Rent vs Buy Calculator and its registered inputs.
Use comparable housing: the rent should represent a property you would realistically rent instead of the property you might buy. Include a realistic holding period, because transaction costs and mortgage amortization make short and long comparisons behave very differently.
Behind the calculation
Calculation used: The model simulates mortgage amortization, home appreciation, rent growth, ownership-cost growth, selling costs and the renter's alternative investment balance. Buyer net equity at the horizon is compared with the renter investment balance.
The buying path tracks mortgage amortization, home appreciation, ownership costs and selling costs. The renting path grows rent and compounds the cash that remains available for investment. The comparison is therefore based on net position at the selected horizon, not rent versus mortgage payment alone.
What the output is telling you
For rent vs buy calculator, separate the financing decision from the property decision. The loan determines principal and interest, while ownership costs and the time you expect to keep the home determine whether the monthly figure is realistic for this particular use case.
The result is scenario analysis, not a forecast; taxes, transaction costs and local housing conditions can materially change the comparison.
Stress-test the assumptions
What the calculator does not know
The result for rent vs buy calculator can move sharply when the rate, property value, down payment or holding period changes. Use those inputs as deliberate stress tests rather than treating a default percentage as a forecast.
The result is scenario analysis, not a forecast; taxes, transaction costs and local housing conditions can materially change the comparison. Keep provider statements, tax rules, account rules or legal disclosures as the final authority whenever they apply.
Authoritative references
Questions specific to rent vs buy calculator
What decision should this result support?
A fair comparison includes down payment opportunity cost, mortgage balance, appreciation, rent growth, ownership costs, selling costs and investment return. Change those assumptions one at a time because they drive the outcome.
What can make the real-world number different?
The result is scenario analysis, not a forecast; taxes, transaction costs and local housing conditions can materially change the comparison.
What is the safest way to use the estimate?
Use the Rent vs Buy Calculator to compare plausible scenarios, then verify the external inputs that control the decision. For this calculation, the most important discipline is to keep the inputs internally consistent and to avoid treating an assumed rate, future value or provider rule as guaranteed.