DSCR calculator
A DSCR calculator should test rental income against the full property payment.
Estimate rental income, payment, taxes, insurance, HOA dues, reserves, LTV, and cash-flow fit before treating a rental deal as financeable.
What DSCR math should include
DSCR is property-first. Rent, payment, taxes, insurance, HOA dues, vacancy, repairs, and reserves decide whether the loan path is worth pursuing.
- Market rent and lease assumptions
- Principal, interest, taxes, insurance, HOA
- Vacancy, maintenance, reserves, and LTV
- Exit plan and property condition
Using AirDNA or another STR projection? Use it to pressure-test the investment, not as automatic qualifying rent. Enter only the rent source the selected lender and product permit, then keep operating cash flow separate from the lender's DSCR calculation. Review the STR evidence questions.
Does the property support the payment?
Compare qualifying monthly rent with principal, interest, taxes, insurance, and HOA. Then review the separate operating-expense cushion before deciding whether the deal deserves a full analysis. The payment model uses a fixed 30-year amortization; use the actual proposed term and lender’s rent definition for a file review.
Planning estimate only, not an approval, appraisal, rent determination, or rate quote. Lenders define eligible rent and minimum DSCR differently. Property type, lease history, short-term-rental rules, appraisal rent, reserves, prepayment terms, credit, and loan-to-value can change eligibility and pricing.
Payment and cash-to-close control
Use the numbers as a planning view, then confirm taxes, insurance, credits, and program fit before the offer moves.
Check the inputs behind the result
Use the calculator that matches the decision, then replace broad estimates with the property's actual taxes, insurance, dues, credits, and timing.
What Matt checks behind the estimate
Documents and facts
- Property address or target area
- Price range and timeline
- Income and down payment or equity
- Credit concern or deal blocker
Common deal blockers
- Taxes, insurance, and HOA dues
- Appraisal or repair conditions
- Credit, income, or reserve friction
- Program timing or documentation gaps
Put the result in context
Use the matching loan and market guides to understand which assumptions can change the estimate.
What to send when the estimate needs a real review
Send the property address, price or balance, goal, timing, and the input that needs to be verified.
Useful inputs
Check the estimate against the real property
Questions to ask about the estimate
Can I use this calculator number as a final approval?
No. Use it as a planning estimate, then verify taxes, insurance, credits, income, assets, and program rules before relying on it.
What should I send after using the calculator?
Send the property price or address, down payment or equity, estimated taxes and insurance, credit concern, and timeline.
Why can the real payment differ from the estimate?
Taxes, insurance, HOA dues, mortgage insurance, credits, lock timing, and underwriting conditions can all change the final number.
Educational information only. Not a loan approval, rate quote, or commitment to lend. Final approval depends on borrower, property, program, pricing, and underwriting review.
