Rental Cash Flow Calculator
Rental cash flow estimates what remains after effective rent, operating expenses, and debt service. The result can help compare scenarios, but it changes quickly when vacancy, repairs, rates, taxes, or insurance move.
Estimates are based on your inputs and assumptions. DealSharp does not provide financial, investment, legal, tax, or lending advice.
Run the number, then pressure-test the assumptions.
Rental cash flow estimates what remains after effective rent, operating expenses, and debt service. The result can help compare scenarios, but it changes quickly when vacancy, repairs, rates, taxes, or insurance move.
Use this page to understand the metric directionally, then compare it against financing, reserves, repair risk, cash flow, and your own constraints.
Use this working calculator as a starting point, then run the full deal in DealSharp when you need more inputs, side-by-side scenarios, and risk context.
Rental cash flow = effective rent - operating expenses - debt service
If effective rent is $1,900, operating expenses are $600, and debt service is $1,050, estimated monthly cash flow is $250.
Assumptions
Rental cash flow
Estimated outputs
Scenario snapshot
Scenario estimate based on the inputs shown here. Use the full DealSharp app to compare financing, repairs, vacancy, cash flow, and risk assumptions before deciding.
How to read this number
The useful move is not treating one number as a final answer. Use it to decide which assumptions deserve more review, then compare the result against cash flow, financing, reserves, repair risk, and your own constraints.
Inputs required
- Metric inputs shown in the formula or calculator.
- Income, expense, debt, value, and cash assumptions where relevant.
- Investor-provided numbers that should be checked against source documents.
Outputs explained
- Scenario estimate based on the inputs.
- Plain-English context for comparing the metric.
- Limitations and assumptions to review before relying on the result.
Assumptions to review
- Inputs are estimates supplied by the user.
- Market rent, lender terms, taxes, insurance, repairs, and legal details can change the result.
- DealSharp does not provide financial, investment, legal, lending, tax, or accounting advice.
What this tells you
- Positive modeled cash flow can create more room for reserves and surprises.
- Thin cash flow can make a deal more sensitive to vacancy, repairs, or rate changes.
- Cash flow is useful beside DSCR, cap rate, and cash-on-cash return.
What this does not tell you
- Cash flow does not tell you property condition, tenant quality, legal terms, tax impact, or future resale value.
- It is only as reliable as the expense and rent assumptions.
Common mistakes
- Using rent before vacancy.
- Skipping property management because you plan to self-manage.
- Ignoring big repairs and replacement reserves.
FAQ
Is rental cash flow before or after taxes?
Most simple rental cash flow calculations are before income taxes unless labeled otherwise.
Why does vacancy matter so much?
Vacancy reduces collected rent and can turn a thin cash-flow scenario negative.
Run the full deal before deciding
This page helps with one metric or workflow. DealSharp is built for full real estate deal analysis: assumptions, financing, cash flow, repair scenarios, DSCR, cap rate, and risk flags based on your inputs.
Open DealSharpDisclaimer
DealSharp provides calculation and scenario-modeling tools for informational purposes only. Outputs are estimates based on your inputs and assumptions. DealSharp does not provide financial, investment, legal, lending, tax, or accounting advice. Verify important decisions with qualified professionals.