Enter the rent
Use the monthly market rent you believe the property can reasonably support.

A quick check before you commit
Work out whether a rental property’s income covers its payment before you commit to a deal. Use the numbers you have, then take the result into a fuller quote conversation.
Powered by Iron Oak Lending | Dallas, Texas
The simple test
Monthly rent
÷ monthly payment
A useful first look at how much room the property’s income has to cover its debt service.
Run the numbers
Start with the loan amount—not the purchase price—and add the monthly costs that belong in the payment. The result is an estimate for planning, not a lender decision.
A short walkthrough
Use the monthly market rent you believe the property can reasonably support.
Use the proposed loan amount, not the purchase price of the property.
Choose the interest rate and the 30-year or 40-year term you want to model.
Add taxes, insurance, and HOA, then read the ratio and the plain-English verdict.
Read the result
The DSCR ratio is monthly rent divided by the total monthly payment. It is a way to see whether the property’s modeled income covers the debt it would carry.
The modeled rent does not fully cover the modeled monthly payment. You would need more income, a smaller payment, or a different structure to close the gap.
Rent roughly matches the payment. There is little room for vacancy, repairs, or a rent estimate that comes in lower than expected.
The property shows a more useful cushion between rent and payment. That is a common rule of thumb, not a universal approval standard.
The modeled rent covers the payment with more room left over. A stronger ratio can help the conversation, but it does not decide the loan by itself.
A ratio around 1.20 is a common lender rule of thumb, not a universal approval standard. Programs differ, and the full file still includes the property, borrower, leverage, reserves, and market.
The variables behind the result
The ratio can change quickly when one part of the deal moves. These are the levers worth checking before you rely on the first estimate.
A realistic market-rent estimate gives the ratio its income side. The appraisal and rent evidence help confirm it.
A larger loan usually creates a larger payment. Lower leverage can improve coverage, but it also means more cash invested.
The rate changes the principal-and-interest payment, so even a small shift can move the ratio on a tight deal.
These costs sit on top of principal and interest. Include them for a more useful estimate of the monthly payment.
A longer term can lower the modeled monthly payment, while the loan structure and program still shape the actual terms.
Repairs, vacancy, neighborhood demand, and the property’s operating story can change the rent and terms a lender is willing to use.
Keep the estimate in context
This calculator estimates payment and coverage from the inputs you provide. It is not a loan approval, a quote, or a promise of terms.
The lender’s appraisal and rent analysis make the final call on the property’s value and usable income. Credit, reserves, property type, leverage, and the program also affect the terms.
Ready for a real quote?
Share the property and the estimate. We’ll help you understand what the deal may need.
Pre-qualification is a preliminary inquiry only — it is not an approval, pre-approval, rate quote or commitment to lend.
Keep learning
Start with the full overview and choose the right path for the deal.
See the path from first conversation through closing.
Translate DSCR, LTV, and other investor-loan language.
Explore financing for 1–4 unit investment properties.
See how larger income-producing properties are reviewed.
Review financing for apartments and 5+ unit properties.
Learn how property income can lead the qualification conversation.
Understand how leverage changes equity and loan sizing.
Bring the property and numbers you are considering.
Let’s diagnose the deal
Bring the property, the rent, and the questions. We’ll help you see the next move.