Rental Property Calculator (2026)
Full investment analysis — enter purchase details, financing, and expenses to instantly see cash flow, cap rate, cash-on-cash return, gross yield, and NOI.
How to AAnalyze a Residential Rental Property Deal
Successful real estate investing requires separating emotional appeal from cold financial fundamentals. Professional real estate investors rely on five core metrics to evaluate prospective income properties: Gross Yield, Net Operating Income (NOI), Cap Rate, Monthly Net Cash Flow, and Cash-on-Cash Return.
| Investment Rule / Metric | Formula / Definition | Benchmark Target |
|---|---|---|
| The 1% Rule | Monthly Rent ÷ Purchase Price × 100 | ≥ 1.0% (e.g., $2,000/mo on a $200k property) |
| The 50% Rule | Operating Expenses ≈ 50% of Gross Rental Income | Rough rule of thumb for non-mortgage costs |
| Cap Rate (Capitalization Rate) | Annual Net Operating Income (NOI) ÷ Property Value | 6.0% – 9.0% for stable cash-flow markets |
| Cash-on-Cash Return (CoC) | Annual Pre-Tax Cash Flow ÷ Total Out-of-Pocket Cash Invested | 8.0% – 12.0%+ accounting for mortgage leverage |
| Debt Service Coverage Ratio (DSCR) | Net Operating Income ÷ Annual Principal & Interest Payments | ≥ 1.20 to 1.25 for commercial & DSCR financing |
Cap Rate vs. Cash-on-Cash Return: What is the Difference?
Many novice investors confuse Cap Rate with Cash-on-Cash Return, but they answer two completely different financial questions:
- Cap Rate evaluates the asset: It measures the unleveraged annual return of the real estate as if you bought it with 100% cash. It allows you to compare a property in Texas directly against one in Ohio without the skew of different interest rates or loan terms.
- Cash-on-Cash Return evaluates your financial leverage: It measures the actual cash return you receive on the actual dollars wired out of your bank account (down payment plus closing costs). When interest rates are lower than your cap rate, leverage magnifies your return.
Planning for Capital Expenditures (CapEx)
Routine maintenance (fixing a running toilet or repairing a disposal) is distinct from Capital Expenditures (CapEx). CapEx represents long-term replacement reserves for major structural components. Failing to set aside $150 to $250 per unit each month for CapEx is the most common reason small rental businesses fail when an HVAC unit ($6,000–$9,000) or shingle roof ($8,000–$14,000) requires emergency replacement.
Frequently Asked Questions
A thorough rental property analysis checks five numbers: gross yield (screens the market), cap rate (compares properties), NOI (lender and valuation metric), cash flow (monthly profitability), and cash-on-cash return (return on your specific investment).
At 2026 rates (~7%), most properties need a gross yield above 9–10% to produce positive monthly cash flow with conventional financing. Focus on markets where rent-to-price ratios are strong: Cleveland OH, Memphis TN, Cincinnati OH, Indianapolis IN, and Birmingham AL.