Rental property calculator
Adjust the assumptions to screen a potential rental. Calculations use the same rental finance engine as Dwelize reports.
Your assumptions
All amounts are in USD.
Estimated results
Monthly cash flow
-$73
Cap rate
6.1%
Cash-on-cash return
-1.3%
Monthly mortgage
$1,730
GRM
10.4
Break-even rent
$2,689
How this is calculated
Cash flow accounts for rent, vacancy, maintenance, tax, insurance, and mortgage payment. Cap rate uses net operating income before financing; cash-on-cash return compares annual cash flow with cash invested.
Read methodologyReady to analyze a real address?
A full report adds a property workspace, editable assumptions, valuation workflow, comparable properties, and sharing.
Analyze a propertyFor educational screening only. This calculator is not investment, tax, legal, lending, or appraisal advice. Verify property facts, costs, financing, and local market conditions before acting.
How to analyze a rental property
Turn a quick calculation into a repeatable underwriting process.
A rental property calculator is a useful place to begin because it makes the relationship between price, rent, operating costs, and financing visible in seconds. It is not a shortcut around research. The value comes from treating every input as a question: where did this rent estimate come from, will taxes reset after a sale, what does the insurance quote say, and what repair work is hidden behind the listing photos?
For a first screen, start with the asking price and a conservative monthly rent. Add your actual down-payment target, interest rate, and loan term, then include property tax, insurance, vacancy, maintenance, and a repair budget. The calculator returns cash flow, cap rate, cash-on-cash return, GRM, mortgage payment, and break-even rent together. Reading the metrics side by side is more useful than declaring a deal good because of one attractive percentage.
When a scenario looks promising, test what happens if rent comes in lower, insurance costs more, a repair reserve grows, or financing changes. A deal that remains understandable under a downside case is worth deeper diligence. Use the rental-property analysis checklist, review a complete expense budget, and then create an address-specific report for valuation and comparable-property context.
Cash flow answers
Does projected income exceed the recurring operating costs and debt service you have modeled?
Return metrics answer
How does the property perform before financing, and how does annual cash flow relate to cash invested?
Break-even rent answers
How much rent is required to cover modeled recurring costs, and how much cushion exists versus credible market rent?
Input checklist
What to verify before making an offer
- Use several relevant rent references instead of relying only on the listing estimate.
- Check address-level taxes and insurance, including likely post-purchase changes.
- Separate immediate renovation cash from recurring maintenance and longer-term capital expenses.
- Use written or realistic financing terms and include the cash needed to close.
- Review comparable sales and condition before treating purchase price or ARV as supported.
Suggested next reads
Learn the inputs behind the results
Rental property calculator FAQ
The calculator models monthly mortgage payment, monthly cash flow, cap rate, cash-on-cash return, gross rent multiplier, and break-even rent from one connected set of purchase, rent, financing, tax, insurance, vacancy, maintenance, and repair assumptions.
There is no universal target. A useful result depends on the property type, local market, condition, financing, required reserves, and your strategy. Compare scenarios using credible local inputs instead of optimizing for one number.
No. It is a screening tool. Before acting, verify rent, property tax, insurance, condition, repair scope, financing, comparable sales, local regulations, and the facts that could change your offer or plan.
A rental can look profitable when those costs are omitted. Explicit reserves make the scenario more honest and make it easier to see the rent cushion required for the deal to work.
Need an address-specific answer?
Create a Dwelize report to keep your assumptions, valuation context, comparable properties, analysis, and sharing in one place.
Analyze a property