DSCR Loan Calculator

DSCR loans removed the biggest bottleneck in scaling a rental portfolio: your W-2. Before these existed, investors in Memphis and Birmingham were buying $120,000 duplexes that cash flowed from day one, and getting denied because their tax returns showed $55,000 in income after depreciation. The property worked. The borrower didn't look like it. DSCR loans flipped the underwrite: qualify the building, not the person behind it.

What is a DSCR loan?

A DSCR loan is a mortgage that qualifies on the property's rental income instead of your personal income. No W-2s. No tax returns. No debt-to-income ratio. The lender asks one question: does the rent cover the mortgage? If the property's net operating income exceeds the loan payment by the lender's required margin, typically a 1.20 DSCR, the deal qualifies regardless of what your 1040 says.

That sounds simple. It is. The complexity is in the pricing, not the concept. DSCR loans carry higher rates, require more down, and often include prepayment penalties that conventional loans do not. You are paying a premium for the right to be underwritten as an investor, not an employee.

How the calculator sizes your loan

This calculator works backward from income. You tell it what the property earns, and it tells you the maximum loan that income can support at a given rate and DSCR requirement. The math is two steps:

The annuity factor is standard amortization math: (1 − (1 + r)⁻³⁶⁰) / r, where r is the monthly interest rate. You don't need to touch it. The calculator above handles it.

What matters is the intuition. A higher DSCR requirement shrinks your max payment because the lender demands a wider cushion between income and debt. A higher rate shrinks your max loan because more of each payment goes to interest, so the same payment supports less principal. Move the sliders above and watch both effects in real time.

Worked example

Take a single-family rental in Indianapolis pulling $2,800/mo in rent with $700/mo in operating expenses. Monthly NOI: $2,100. The lender wants a 1.20 DSCR at 7.25%.

At 80% LTV, that loan supports a purchase price around $320,000. The property needs to appraise at or above that number, or you bring the difference as additional down payment.

Now change one variable. Drop the rate to 6.50%, realistic if you shop aggressively or have a 760+ credit score, and the same $1,750 payment supports roughly $277,000 in financing. That is $20,500 more borrowing power from three-quarters of a point. Adjust the rate slider above to see it move.

DSCR loan vs conventional mortgage

Conventional financing is cheaper per deal. That is not the debate. The debate is what happens at deal 6, deal 10, deal 15. Here is how the two products compare once you stop looking at a single transaction:

An investor in Dallas buying property #3 should use conventional. An investor in Kansas City buying property #12 does not have that option. The products serve different phases of the same portfolio.

How rate changes move your borrowing power

The property's income is what it is. The DSCR target is what the lender says. That leaves rate as the only lever you can actually shop. And the difference is not marginal. Using the same $2,100 monthly NOI and 1.20 DSCR ($1,750/mo max payment):

Each half-point of rate costs roughly $12,000 to $14,000 in borrowing power on this deal. That gap widens on larger properties. A four-unit in Cleveland with $4,200/mo NOI loses over $25,000 in capacity per half-point. Getting three quotes instead of one is the highest-ROI hour you will spend on a DSCR deal.

DSCR loan requirements (2025–2026)

Credit score matters more than most investors expect. The difference between a 660 and a 740 on a DSCR loan can be 75 to 100 basis points of rate. On a $250,000 loan, that is $150/mo in payment, which directly shrinks the loan the property's income can support. If your score is borderline, waiting three months to clean it up can save you more than negotiating with five different lenders.

The prepayment penalty trap

This is where DSCR loans bite investors who do not read the fine print. Almost every DSCR product includes a prepayment penalty, typically structured as a step-down: 5-4-3-2-1 (5% of the balance if you pay off in year one, 4% in year two, etc.) or a shorter 3-2-1.

On a $256,500 loan, a 5% penalty in year one is $12,825. That number does not show up in any rate comparison or monthly payment calculation. It shows up when you try to sell or refinance.

BRRRR investors get hit hardest. The whole strategy assumes a refinance within 6 to 18 months. If you take a DSCR loan for the initial purchase with a 5-year prepay, you are paying 4% to 5% of the balance to refinance on schedule. On that $256,500 loan, that is $10,000 to $12,800 coming straight out of your cash-back. Some lenders offer no-penalty options at 25 to 50 basis points higher. That is often worth it if your hold period is under three years. Model both scenarios before you lock.

When DSCR loans make sense

Conventional financing is cheaper. Use it when you can. But DSCR loans exist because "when you can" has an expiration date for serious investors. Here are the situations where paying the premium is the right move:

• You've hit the conventional wall. After 10 financed properties, Fannie and Freddie are done with you. DSCR is the primary path forward for long-term holds. Property 11 closes the same way as property 3. The lender does not care how many you already own.
• Your tax returns work against you. An investor in Phoenix taking cost segregation on three properties might show $40,000 in taxable income on $200,000 in actual revenue. A conventional lender sees a $40,000 earner who cannot support more debt. A DSCR lender does not look at that number at all.
• Speed matters.DSCR loans skip income verification entirely, which cuts underwriting time. If you're competing against cash offers on a duplex in Atlanta or Tampa, a 21-day DSCR close is more competitive than a 45-day conventional process.
• You want clean asset protection. Closing directly in an LLC at the table: no post-closing deed transfer, no triggering a due-on-sale clause. For investors building a portfolio across multiple entities, this alone justifies the product.

When they do not make sense

Not every deal deserves DSCR financing. The rate premium eats margin, and on thin deals, it eats all of it.

• The property barely cash flows. A rental in Austin pulling $1,800/mo with a conventional payment of $1,650 has a thin margin to begin with. Add 1.5 points of rate premium and the payment jumps to $1,850. Now you are subsidizing the property monthly. DSCR loans amplify good deals and expose bad ones.
• You have conventional capacity left. If you have W-2 income, fewer than 10 financed properties, and clean tax returns, conventional is almost always cheaper. The rate savings compound over 30 years. Do not pay DSCR pricing out of convenience when conventional is available.
• Your exit is short-term. If you plan to sell or refinance within 18 months and the loan carries a 5-year prepay, the penalty can wipe out a year of cash flow. Either negotiate the prepay structure or use a different product.

Closing in an LLC

This is the operational advantage investors underestimate until they need it. Conventional lenders require you to close in your personal name, then transfer the property to an LLC after closing, technically triggering the due-on-sale clause. Most lenders do not enforce it. Some do. It is an unnecessary risk.

DSCR lenders expect entity closings. You vest the property directly in your LLC at the closing table. No post-closing deed transfer, no legal gray area. For an investor in Houston running 15 rentals across three LLCs, this is not a nice-to-have. It is how the business actually operates.

There is no property count limit either. Conventional financing caps out at 10 financed properties per borrower. DSCR has no cap. Property 25 underwrites the same way as property 5.