Calculator Inputs
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Currency
Property purchase
Income
Operating expenses
Enter monthly amounts. The calculator annualizes them automatically.
Financing
Estimate whether a rental property is likely to be cash-flow positive after rent, vacancy, operating expenses, mortgage payments, and upfront investment costs.
Enter your assumptions. Empty fields are treated as 0.
Enter monthly amounts. The calculator annualizes them automatically.
Start with purchase and upfront cash values, then add monthly rent, vacancy, operating expenses, and your mortgage payment. Keep assumptions realistic and include costs you might otherwise skip during a quick deal review.
Rent alone can make a deal look strong while real costs hide weak margins. Vacancy, repairs, taxes, service charges, and financing all affect whether a property supports itself month to month. A practical decision starts with net cash flow, then confirms return quality with yield and cash-on-cash return.
After you run scenarios here, track and organize your real income and expenses in one dashboard. You can review performance by property, monitor recurring costs, and compare returns over time.
How to calculate ROI on a rental property
Use PropFlow to track rental property cash flow and returns in one place.
Start Tracking Your Portfolio →It shows monthly net cash flow, annual net cash flow, gross rental yield, net rental yield, cash-on-cash return, expense ratio, and payback period based on your assumptions.
No. It provides estimates only and does not constitute financial, tax, legal, or investment advice.
Cash flow is money left after income, expenses, and mortgage payments. ROI and cash-on-cash return compare those returns against your invested capital.
Yes. Ignoring vacancy, maintenance, and reserves usually overstates returns and can hide risk.
Yes, for basic estimates. Use the RM or SGD options and enter accurate local taxes, maintenance fees, service charges, and financing assumptions. Check local tax and legal treatment separately.