| The tradeoff | Rent is fixed by the property, so raising the loan raises the payment and lowers the ratio |
| Loan-to-value | The loan divided by the value the lender accepts. 25 percent down is 75 percent LTV |
| What moves | Principal and interest |
| What does not move | Taxes, insurance, association dues and the rent |
| Three ceilings | The ratio-derived amount, the LTV ceiling, and program and file limits. The lowest one wins |
| Cash-out | Commonly capped below purchase leverage |
Short answer: on a DSCR loan the rent is fixed by the property, so every dollar you borrow above a certain point buys you a higher payment and a lower coverage ratio. Leverage and coverage move in opposite directions. The practical question is not what the minimum down payment is but at what loan amount this property still covers itself, and whether you have that cash.
Loan-to-value is the loan divided by the value the lender accepts. Put 25 percent down and you are at 75 percent LTV. The calculators on this site take those two numbers and show you the consequence immediately.
Why leverage and coverage pull against each other
The debt-service coverage ratio is qualifying rent divided by the full monthly payment, which includes principal, interest, taxes, insurance and association dues. Raising the loan raises principal and interest. Taxes and insurance do not move. Rent does not move either.
So the ratio falls as leverage rises, and it falls faster than most investors expect, because only part of the payment is sensitive to the loan size. That is the entire tradeoff in one sentence.
The same property at three leverage points
Assumptions, all hypothetical: a single rental unit, purchase, value $400,000, market rent $3,000 a month, real-estate taxes $400 a month, hazard insurance $150 a month, no association dues. Illustrative rate of 7.25 percent held constant across all three columns, 30-year fixed. The rate is not a quote and is held fixed here only to isolate the effect of leverage.
| 70% LTV | 75% LTV | 80% LTV | |
|---|---|---|---|
| Loan amount | $280,000 | $300,000 | $320,000 |
| Down payment | $120,000 | $100,000 | $80,000 |
| Principal and interest | $1,910.09 | $2,046.53 | $2,182.96 |
| Taxes, insurance, dues | $550.00 | $550.00 | $550.00 |
| Full monthly payment | $2,460.09 | $2,596.53 | $2,732.96 |
| Qualifying rent | $3,000.00 | $3,000.00 | $3,000.00 |
| DSCR | 1.22x | 1.16x | 1.10x |
Read the ends of that table against each other. Forty thousand dollars less cash at closing costs about 0.12 of coverage and $273 a month of payment. Neither number is right or wrong. They are a price you either want to pay or do not.
The part the table cannot hold constant
Holding the rate fixed isolates the leverage effect, but it is not how pricing works. Lenders and the institutions that buy these loans price risk, and leverage is one of the inputs they price. Moving from 70 to 80 percent LTV commonly changes the rate or the points, which pushes the real 80 percent payment higher than the figure above and the real ratio lower. Treat the table as the floor of the effect, not the whole of it. Cash-out refinances are usually capped lower than purchases as well, so the right-hand column may simply not exist on a refinance of the same property.
Three ceilings, and the lowest one wins
Investors often ask what loan a property supports and get three different answers, because there are three different limits.
- The ratio-derived amount. What the rent supports at the lender's minimum coverage. The DSCR loan calculator computes this from your target ratio.
- The LTV ceiling. The maximum percentage of value the program allows for that property type and transaction.
- Program and file limits. Minimum and maximum loan sizes, credit, reserves, property type and experience overlays.
Your actual maximum is the most restrictive of the three, every time. A property with strong rent can be capped by LTV, and a property with a generous LTV allowance can be capped by coverage. Never quote yourself the friendliest of the three.
What the extra cash actually buys
Lower leverage is not automatically the better deal. The money you leave in the property is money that is not buying the next one. What lower leverage does buy is margin.
- Room above the minimum ratio, so a tax reassessment or an insurance increase does not push the file under the line before closing.
- A payment the property can carry through a vacancy without you funding it.
- In most programs, better pricing, which compounds over the hold.
Higher leverage buys reach and speed. The honest framing is a portfolio question, not a mortgage question, and the right answer differs by investor.
A common mistake: solving for the down payment first
Investors frequently decide on 20 percent down, then discover the ratio is short and treat that as a surprise. The sequence works better in the other direction. Establish the qualifying rent, establish the taxes and insurance, then find the loan amount where the coverage holds with room to spare. The down payment is the output of that calculation, not the input to it.
Note also that the down payment is only one of three cash requirements. Closing costs and reserves are separate, and reserves are commonly measured in months of the full payment, which means raising leverage raises the reserve requirement too.
Mistakes to watch for
- Comparing leverage scenarios at one rate and forgetting that pricing moves with leverage.
- Assuming the purchase LTV ceiling also applies to a cash-out refinance.
- Reading the calculator's illustrative maximum loan as an approval rather than one of several ceilings.
- Budgeting the down payment and forgetting closing costs and reserves.
- Taking maximum leverage at a ratio barely above the minimum, which leaves no room for a tax or insurance change between application and closing.
The last of those is the one that most often turns a clear approval into a re-priced file a week before closing.
Frequently asked questions
How much do I need to put down on a DSCR loan? It varies by program, property type, transaction and file. There is no universal minimum, and the more useful question is what loan amount the property's rent supports at the lender's required coverage.
Does a bigger down payment improve my rate? Lower leverage generally prices better, though how much depends on the lender and the rest of the file. A quote is the only way to know.
Is 80 percent LTV available on a cash-out refinance? Cash-out is commonly capped below purchase leverage. The specific ceiling depends on the program and the property type.
If my ratio is short, is more cash the only fix? No. A lower loan amount is one lever. Structure, verified pricing and the rent documentation are others. That is the subject of what to do when the DSCR comes in short.
Next step
Run your property at two or three leverage points in the DSCR Program Calculator and watch what the ratio does, then send us the value, rent, taxes, insurance and the loan amount you want so we can review the structure. A deal review comes back from a specialist, with no credit pull at that stage.