I had a deal fall apart in 2024 because my debt service coverage ratio came in at 0.97. Not 0.50. Not some catastrophic number. Three hundredths below the lender's threshold. That three-hundredths gap cost me a $1.4 million acquisition and four months of work.

If you don't understand DSCR, you will lose deals you should have closed. So let me break it down the way I wish someone had explained it to me when I was starting out.

What DSCR Actually Means

Debt service coverage ratio answers one question: can this property pay its mortgage?

That's it. No complexity. No mystery. The lender wants to know that the income the building generates is enough to cover the debt payments with room to spare.

The formula is simple.

DSCR = Net Operating Income / Annual Debt Service

NOI is your gross income minus operating expenses, before mortgage payments. Annual debt service is your total mortgage payments for the year, principal and interest combined.

If your building produces $120,000 in NOI and your annual mortgage payments are $100,000, your DSCR is 1.20. That means for every dollar of debt, the property generates $1.20 in income. The lender has a 20-cent cushion.

The Numbers That Matter

Here's where most investors get tripped up. They think of DSCR as a pass/fail test. It's more nuanced than that.

Below 1.0 means the property doesn't generate enough income to cover its debt. You're writing checks out of pocket to keep the mortgage current. Lenders won't touch this. Neither should you, unless you have a very specific value-add-playbook-for-b-and-c-class-multifamily) plan with the capital to execute it.

1.0 to 1.15 is the danger zone. Technically the property covers its debt, but one bad month, one vacancy, one surprise repair, and you're underwater. Most conventional lenders won't lend here.

1.20 to 1.25 is the standard minimum for most commercial and DSCR lenders. This is where the conversation starts.

1.30 to 1.50 is comfortable. You have real margin. Lenders give you better terms here because their risk drops.

Above 1.50 is strong. You will get the best rates, the most favorable terms, and lenders will compete for your business.

We target a minimum DSCR of 1.25 on every acquisition we underwrite-a-multifamily-acquisition). Not because the lender requires it. Because if our DSCR is that tight at purchase, any operational hiccup puts us in a bad position.

How to Calculate It Step by Step

Let me walk through a real example using numbers from a 20-unit B-class building in the Omaha metro.

Gross Potential Rent: $14,400/month ($720/unit average), or $172,800/year

Other Income: Laundry, pet fees, late fees. Call it $6,000/year.

Gross Potential Income: $178,800

Now subtract vacancy. We use 7% for B-class in our market, even if the building is currently full. That's $12,516 off the top.

Effective Gross Income: $166,284

Operating expenses on a 20-unit building in our market typically run 45-50% of EGI. We will use 47%, which accounts for property taxes, insurance, repairs, management fees, utilities, turnover costs, and reserves.

Operating Expenses: $78,153

NOI: $88,131

Now the debt side. Let us say the purchase price is $1,200,000 with 25% down. That's a $900,000 loan at 7.25% interest on a 25-year amortization.

Monthly Payment: $6,528 Annual Debt Service: $78,336

DSCR = $88,131 / $78,336 = 1.125

That deal doesn't work at those terms. The DSCR is below our 1.25 minimum and below most lenders' thresholds. The building cash flows, but barely. One bad quarter and you're reaching into your pocket.

Five Ways to Improve Your DSCR

When a deal comes in below threshold, you have five levers. Most investors only think of two.

1. Increase the Down Payment

More equity means a smaller loan, which means lower debt service. In the example above, going from 25% to 30% down drops the loan to $840,000, dropping annual debt service to $73,114. New DSCR: 1.205. Getting closer.

The trade-off is real though. Every extra dollar in the down payment is a dollar not working somewhere else. There's an opportunity cost to buying your way into a better DSCR.

2. Negotiate a Lower Purchase Price

If the DSCR doesn't work at the asking price, the asking price is too high. This is one of the most honest conversations you can have with a seller. You aren't lowballing them. The math simply doesn't support their number.

3. Find Better Debt Terms

Shop the loan. We typically get quotes from four to six lenders on every deal. A quarter-point difference in rate on a $900,000 loan changes your annual debt service by roughly $2,250. A longer amortization (30 years instead of 25) can drop your monthly payment meaningfully.

4. Increase NOI Before Closing

This is the value-add play. If you can identify below-market rents, billback opportunities on utilities, or unnecessary expenses in the current operation, you can underwrite to a higher stabilized NOI. But be honest with yourself. The lender will underwrite on trailing actuals, not your pro forma. You need to prove the upside is achievable.

5. Reduce Operating Expenses

Every dollar you cut from expenses flows straight to NOI, which flows straight to your DSCR. We have seen buildings where the previous owner was overpaying for landscaping, insurance, or trash removal by 20-30%. Those savings are real and they move the needle.

What Happens When You Drop Below 1.0

I want to be direct about this because I see investors brush it off. A DSCR below 1.0 means you're losing money every single month on a cash basis. The property can't sustain itself.

If you're in this position, you have three options.

Inject capital. Keep funding the gap from other income or reserves. This is a timer, not a strategy. Eventually the reserves run out.

Restructure the debt. Refinance-decision-framework) to better terms, extend the amortization, or negotiate with the lender. This only works if the lender cooperates and the property supports a new appraisal.

Sell. Sometimes the best investment decision is to stop the bleeding. A property that doesn't cover its debt is a liability, not an asset.

Managing multifamily properties across the Omaha metro has taught me that DSCR isn't a number you calculate once at acquisition and forget. It should be part of your quarterly review. Rents change. Expenses change. Interest rates change. Your DSCR today might not be your DSCR in 18 months.

Why the Lender Cares More Than You Think

Here's the part most investors miss. The lender isn't just checking a box. They're underwriting their own risk, and DSCR is the single best predictor of whether a commercial real estate loan will default.

A lender who writes a loan at a 1.10 DSCR knows that a 10% drop in income, which is one or two vacancies on a small building, puts that loan into default territory. They have seen the cycle. They know what happens when markets soften or expenses spike.

When you show up to a lender with a 1.35 DSCR, you aren't just showing them a number. You're showing them margin. You're showing them that this property can absorb hits and still make every payment. That's why your rate goes down, your terms get better, and the process moves faster.

DSCR isn't just a lending metric. It's a management metric, an investment metric, and a survival metric. Know your number. Track it quarterly. And never let it surprise you.

We talk about this every week on the Freedom Fighter Podcast. Listen on Spotify, Apple, or YouTube. Or reach out at Tanner@TopTierInvestmentFirm.com.

Tanner Sherman is the Principal and Managing Broker of Top Tier Investment Firm in Omaha, Nebraska. He co-hosts the Freedom Fighter Podcast with Ryan of Avara Investments.

How to Calculate DSCR and Why Your Lender Cares