Real Estate
Rental Property Affordability Calculator
Calculate separate purchase-price ceilings from available acquisition cash and DSCR-supported debt capacity, then expose the binding constraint.
Price supported by acquisition cash-
Effective monthly rent-
Monthly net operating income-
Maximum monthly debt payment from DSCR-
Monthly payment per 100,000 financed-
Loan capacity from debt payment-
Purchase price supported by modeled debt capacity-
Planning acquisition price limit-
Difference between cash and income price limits-
Decision view
Rental acquisition dual-limit gate
Rental acquisition dual-limit gateThe planning purchase-price ceiling is the lower of the cash-supported and DSCR-supported limits.
Exact scenario comparisonLoan interest rate (%) changes while all other entered assumptions remain constant.
| Loan interest rate (%) | Price supported by acquisition cash | Effective monthly rent | Monthly net operating income | Maximum monthly debt payment from DSCR | Monthly payment per 100,000 financed | Loan capacity from debt payment | Purchase price supported by modeled debt capacity | Planning acquisition price limit | Difference between cash and income price limits |
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How to use Rental Property Affordability Calculator
- Use realistic vacancy and operating costs.
- Confirm lender DSCR and amortization assumptions.
- Compare the modeled ceiling with valuation, reserves, and capital needs.
Calculator guide
Understanding Rental Property Affordability Calculator
A rental acquisition is constrained by both cash at closing and income available for debt service; the lower limit governs.
Calculation method
How the calculation works
Calculate separate acquisition-price limits from available cash and rental-income debt coverage, then use the lower as the planning affordability ceiling. Divide cash by down-payment plus closing allowance, calculate NOI after vacancy and operating expense, divide by minimum DSCR for debt payment, capitalize that payment into loan capacity, and compare limits.
Acquisition screen
Check the gap before making an offer
A workable price also needs reserves and valuation support.
Worked situations
Practical examples
- More cash does not help when NOI is the binding limit.
- Higher required DSCR lowers supported debt.
- The affordability ceiling is not market value.
Better inputs
Useful tips
- Add taxes, insurance, repairs, and capital reserves.
- Stress-test rent and rate.
- Keep post-closing liquidity.
Before relying on the result
Limitations and common mistakes
- This is not underwriting or valuation.
- Taxes, insurance, capital expenditures, lender adjustments, fees, and appraisal are excluded.
- One fixed-rate amortizing loan is assumed.
Reference
Key terms
- NOI
- Effective rent less operating expense before debt.
- DSCR
- NOI divided by debt service.
- Cash limit
- Price supported by acquisition cash.
- Income limit
- Price supported by modeled debt capacity.
Important note
Calculated from the entered property and financing assumptions. It does not replace lender, appraisal, legal, tax, or investment review.
Frequently asked questions
Why use the lower limit?
Both cash and debt-service constraints must be satisfied.
Is affordable price the property value?
No.
Are operating expenses complete?
Only the entered monthly amount is included.
Does DSCR include taxes and insurance?
Only if they are included in entered operating expense under the intended convention.