Use a realistic stay length
Buying has closing and selling costs that are spread over the years of ownership. A short stay can make those costs dominant. Calculate several horizons rather than choosing the one that favors a preferred option.
Home buying
Rent vs. Buy Calculator
Compare estimated homeowner equity with a renter investment account after mortgage costs, rent growth, appreciation and transaction costs.
Modeled advantage of renting
$15,667.85
Net homeowner equity
$173,100.59
Modeled renter portfolio
$188,768.44
Monthly mortgage payment
$2,022.62
Future home value
$491,949.55
Remaining mortgage
$289,331.98
Result comparison
Modeled advantage of renting: $15,667.85
Net homeowner equity: $173,100.59
Modeled renter portfolio: $188,768.44
Monthly mortgage payment: $2,022.62
Future home value: $491,949.55
Remaining mortgage: $289,331.98
Modeled advantage of rentingRemaining mortgage
This simplified comparison excludes taxes, deductions, renovation, rent deposits, moving costs and uneven market returns.
Calculation method
Home equity versus renter portfolio
Net home equity equals future home value minus the remaining mortgage and sale costs. Future home value uses the appreciation assumption.
Detailed guide
Compare assets at the same future date
A rent-versus-buy calculator needs a common endpoint. The buying path produces home equity after the remaining mortgage and estimated selling costs. The renting path starts with the cash not used for down payment and purchase costs, grows it at the assumed investment return and adds monthly cost differences.
This makes the primary result an asset comparison rather than a simple sum of rent versus mortgage payments. Mortgage principal is not treated as a lost expense because it increases equity. At the same time, taxes, insurance, maintenance and transaction costs reduce the buying result.
Home equity versus renter portfolio
Buy advantage = net home equity − modeled renter portfolio
Net home equity equals future home value minus the remaining mortgage and sale costs. Future home value uses the appreciation assumption.
The renter portfolio begins with down payment and purchase costs. Each month it earns the assumed return and receives the difference when modeled owner costs exceed rent.
Decision guide
Compare renting and buying over the same horizon
Top Google calculators model upfront and recurring costs, investment opportunity cost, home appreciation, rent growth, selling costs, and the break-even year. The answer is highly sensitive to how long you stay and what happens to cash not used for a purchase.
Include all ownership cash flows
Add mortgage principal and interest, taxes, insurance, association dues, maintenance, closing costs, and selling costs. Principal builds equity and should not be treated exactly like interest, while maintenance remains a true expense.
Model the renter’s alternative use of cash
The down payment and monthly savings under renting can remain invested. Assign a conservative return and apply it consistently. Ignoring opportunity cost makes buying look stronger; assuming an unrealistic return makes renting look stronger.
Keep nonfinancial factors visible
Mobility, renovation freedom, maintenance responsibility, school plans, and housing stability cannot be reduced to one dollar result. Use the calculator to understand the financial threshold, then make the decision with those constraints alongside it.
Fair comparison
- Use the same time horizon.
- Include purchase and sale costs.
- Model invested cash differences.
- Stress-test rent and home growth.
How to compare scenarios
Save a baseline, then change only one input at a time: amount, rate, term, or recurring payment. Record the supporting outputs as well as the headline result—contributions, interest, total cost, remaining balance, or target date. This isolates the assumption that actually changes the decision instead of hiding it inside several simultaneous edits.
Do not tune every assumption until the calculator produces a preferred answer. Start with a cautious case, follow with a central case, and treat the favorable case as an upside scenario. A calculator result is not a lender quote, market forecast, or tax determination; actual dates, rounding, fees, contract rules, and required payments must be checked in primary documents.
Keep enough precision in the inputs and round only the output used for a decision. If the estimate supports a transaction, loan, tax calculation, or long-term plan, repeat it with figures from the contract or official statement. Any difference helps identify the assumption that still needs verification.
Assumptions that can reverse the answer
Time horizon
Buying transaction costs are concentrated at the beginning and sale. A shorter stay often makes those costs more important.
Maintenance and major repairs
Use a realistic monthly owner-cost allowance. Averages cannot predict the timing of a roof, appliance or structural expense.
Investment discipline
The renter result assumes the available upfront cash and positive monthly differences are actually invested.
Rent vs. buy questions
Does the calculator treat mortgage payments as an expense?
It includes the cash payment but also credits the homeowner with equity after subtracting the remaining loan.
Are tax deductions included?
No. Eligibility and value depend on current tax rules and individual circumstances.
What does a positive buy advantage mean?
Under the entered assumptions, net home equity exceeds the modeled renter portfolio at the end of the comparison period.
Data sources
These primary sources explain the rules and concepts referenced by this calculator. The calculation itself uses only the assumptions entered above.
Updated: August 1, 2026
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