Real Estate
Rent vs Buy Calculator
Estimate mortgage principal and fixed monthly principal-and-interest payment, add entered annual property tax, insurance, and upkeep, and compare the resulting monthly ownership outflow with rent. Use it as a budget screen before considering appreciation, selling costs, equity, rent growth, and opportunity cost.
Mortgage principal-
Monthly principal and interest-
Estimated monthly ownership cost-
Monthly ownership minus rent-
Exact scenario comparison
Mortgage rate (%) scenarios
Exact scenario comparisonMortgage rate (%) changes while all other entered assumptions remain constant.
| Mortgage rate (%) | Mortgage principal | Monthly principal and interest | Estimated monthly ownership cost | Monthly ownership minus rent |
|---|
Period-by-period detail
Monthly schedule and annual summary
How to use Rent vs Buy Calculator
- Enter current rent, purchase price, down payment, mortgage rate and term, plus annual tax, insurance, and upkeep.
- Compare rent with the calculated monthly ownership outflow while keeping principal-and-interest and nonloan ownership costs separate.
- Before deciding, model closing and selling costs, rent growth, maintenance variation, investment return on cash, equity, and the expected holding period.
Calculator guide
Understanding Rent vs Buy Calculator
Monthly rent and a mortgage payment are not directly comparable until recurring ownership costs and the cash tied up in a down payment are made visible. This page performs a first-pass monthly outflow comparison while deliberately separating that result from a complete wealth or break-even analysis.
Calculation method
How the calculation works
Subtract the down payment, calculate a fixed-rate mortgage payment, add entered ownership costs, and compare the monthly outflow with rent. Subtract the down payment, calculate a fixed-rate mortgage payment, add entered ownership costs, and compare the monthly outflow with rent.
Worked situations
Practical examples
- For a $450,000 home with a $90,000 down payment, enter $360,000 as the implied financed principal by entering price and down payment separately.
- Combine recurring property tax, homeowners insurance, and a realistic maintenance allowance in annual ownership costs.
- Run higher-rate and higher-upkeep scenarios before deciding whether the monthly difference fits the household budget.
Better inputs
Useful tips
- Keep utilities out of the comparison unless rent and ownership scenarios include them on the same basis.
- Add condominium or homeowners association fees to annual ownership costs when they are unavoidable.
- Use a full holding-period model when the decision depends on future sale proceeds, appreciation, rent growth, or investment return on the down payment.
Before relying on the result
Limitations and common mistakes
- The page compares current monthly cash outflow and does not treat mortgage principal as equity accumulation.
- Closing costs, selling costs, appreciation, rent increases, tax effects, investment opportunity cost, mortgage insurance, and maintenance volatility are excluded unless embedded in the annual cost input.
- Financing approval, property condition, legal obligations, lifestyle preferences, and market risk require separate review.
Reference
Key terms
- Mortgage principal
- Purchase price less the entered down payment.
- Principal and interest
- Level monthly payment produced by the entered fixed rate and term, excluding escrow and other property costs.
- Ownership cost
- Mortgage payment plus entered tax, insurance, and upkeep converted to a monthly amount.
- Monthly difference
- Estimated monthly ownership outflow minus entered monthly rent.
Important note
Calculated from the entered property and financing assumptions. It does not replace lender, appraisal, legal, tax, or investment review.
Frequently asked questions
Does a positive difference mean renting is always better?
No. It means ownership has higher modeled monthly outflow; equity, appreciation, transaction costs, risk, and nonfinancial preferences remain unresolved.
Should mortgage principal count as a cost?
It is part of required cash outflow but also reduces loan balance. A complete economic comparison separates interest and ownership expenses from equity accumulation.
Where should HOA fees be entered?
Add the annualized amount to the annual tax, insurance, and upkeep field.
Does the down payment affect opportunity cost?
Yes, but this page uses it only to reduce principal. A complete model should compare alternative returns and liquidity for that cash.