Multifamily DSCR Requirements: How 1.20x Coverage Sizes Your Loan

Quick Answer

Multifamily DSCR = Net Operating Income ÷ Annual Debt Service, and it must be ≥ 1.20x (1.25x if interest-only). Unlike residential DSCR, the numerator is NOI — rent after vacancy, taxes, insurance, management, utilities, repairs, and reserves — not gross rent. Your maximum loan is the lower of two ceilings: 75% of appraised value, or the loan whose payment your NOI covers at 1.20x. On thin-margin buildings, DSCR binds first and quietly shrinks the loan below 75% LTV.

Every multifamily quote conversation eventually arrives at the same sentence: "leverage is determined by in-place cash flow." It sounds like boilerplate. It's actually the entire underwriting model in seven words — and if you understand the math behind it, you can size your own deal from a rent roll and a T-12 before you ever talk to a lender, and you'll never be ambushed by a loan amount that came in $300K under your assumption.

Here's that math, the way an underwriter actually runs it.

Multifamily DSCR vs. Residential DSCR: Same Name, Different Test

If you're coming from 1–4 unit DSCR loans, recalibrate first. Residential DSCR is a gross test: market rent from the appraisal's rent schedule, divided by the full mortgage payment (PITIA). A 1.0 means the rent equals the payment. Simple.

Commercial multifamily runs a net test. The numerator is net operating income — what's left after the building pays its own bills — and the threshold is higher:

	Residential DSCR (1–4 units)	Multifamily DSCR (5+ units)
Income used	Gross market rent (Form 1007/1025)	NOI: actual rents − vacancy − all operating expenses
Payment tested	Full PITIA	Annual debt service (P&I or IO)
Typical minimum	1.0 (sub-1.0 and no-ratio programs exist)	1.20x P&I · 1.25x interest-only
What moves it	Rent vs. payment	Occupancy, expenses, taxes, management — the whole P&L

Because operating expenses typically absorb 35–45% of gross rents on an apartment building, a multifamily loan needs far more gross income per borrowed dollar than a residential file. That's not the lender being stingy — it's the recognition that a building with 20 tenants has 20 turnovers, a boiler, a roof, a parking lot, and a property tax bill that reassesses on sale.

The Numerator: How Underwriters Rebuild Your NOI

You'll submit a rent roll and trailing-12 operating statements. The underwriter doesn't take them at face value — they rebuild the P&L line by line, taking the more conservative of your actuals and market norms:

Vacancy floor. Even a 100%-occupied building gets a minimum vacancy/collection-loss factor (commonly around 5%, market-dependent). Full occupancy today is not a permanent condition.
Imputed management. Self-managing? An expense line gets added anyway — the lender underwrites the building as if it had to survive professional management, because someday it might.
Taxes at tomorrow's number. On a purchase, expect taxes underwritten at the post-sale reassessed value where the state reassesses on transfer — the same trap that kills residential deals, at commercial scale. (Our PITIA guide covers the residential version of this.)
Insurance at renewal quotes. A below-market legacy premium gets adjusted up to what a new policy actually costs.
Repairs & replacement reserves. A per-unit maintenance and reserve allowance appears even if last year happened to be cheap.

The result — underwritten NOI — is usually lower than the NOI in the offering memorandum. Pre-size your deal with conservative numbers and the lender's quote will land near your expectation instead of under it.

The Worked Example: A 12-Unit Building, Start to Finish

🧮 Illustrative sizing — 12 units, avg. $1,750/unit

Gross scheduled income: 12 × $1,750 × 12 = $252,000/yr
Less 5% vacancy/collection loss: −$12,600 → $239,400 effective gross income
Less operating expenses (40%): taxes $38,000 · insurance $14,000 · management $12,000 · utilities/common $16,200 · repairs & reserves $15,400 · admin $5,000 ≈ −$100,600
Underwritten NOI: ≈ $138,800
Max annual debt service at 1.20x: $138,800 ÷ 1.20 = $115,667 (≈ $9,639/mo)
Loan that payment supports (30-yr amortization, illustrative rate): ≈ $1.4M
The other ceiling: appraisal $2.1M × 75% LTV = $1.575M
Result: DSCR binds — the loan is ≈ $1.4M (~67% LTV), not $1.575M.

Illustrative only. Rates, expense ratios, and adjustments vary by market, file, and the day you lock.

Notice what happened: the buyer walked in planning "75% leverage" and the cash-flow test quietly took 8 points of LTV away. On a $2.1M purchase that's roughly $175K more equity than budgeted. Nothing went wrong — this is the system working as designed. The buildings that get full 75% leverage are the ones whose income earns it.

Why Interest-Only Costs You 5 Points of Coverage

The interest-only threshold is 1.25x instead of 1.20x, and the reason is mechanical: an IO payment is smaller than an amortizing payment on the same balance, so testing it at the same 1.20x would let IO files carry meaningfully more debt on identical income. The stricter ratio claws that back. In practice, IO still often supports a similar or slightly larger loan with better in-hold cash flow — it just doesn't let you leverage dramatically past the amortizing case, which is the point.

Rates Move, and Your Loan Size Moves With Them

Here's the part buyers underestimate in a moving market: when DSCR is the binding ceiling, your maximum loan is a function of the interest rate. A higher rate means a bigger payment per dollar borrowed, which means fewer dollars borrowed at the same 1.20x coverage. A rate drift of half a point between offer and closing can shave tens of thousands off a DSCR-constrained loan. That's why rate lock at application — available on our program, with the deposit refunded at closing — is worth more in multifamily than almost anywhere else: it freezes both your rate and your loan size while underwriting runs.

Five Legitimate Ways to Improve Coverage

Document every rent increase. Executed leases and signed renewal letters count toward in-place income; verbal intentions don't. Close after the increases take effect, not before.
Fix the tax and insurance lines before underwriting does. Appeal an over-assessment, shop the insurance renewal — a $10K expense reduction is ~$8,300 of debt capacity at 1.20x.
Recover what tenants should pay. Utility bill-back (RUBS) programs, where market-standard and properly implemented, move real dollars from expense to income.
Choose the structure deliberately. A hybrid with a longer initial fixed period, a different amortization, or the IO-at-1.25x trade can each change what the same NOI supports — this is a structuring conversation, not a spreadsheet cell.
Bring more equity and buy the building, not the leverage. If the deal only works at 75% LTV with pro-forma rents, it doesn't work yet. Stabilize on a bridge loan, then refinance into permanent debt — including agency lease-up take-outs — once the income is real.

Want Your Deal Pre-Sized?

Send the rent roll and T-12. We'll run the two-ceiling math and tell you what the building actually supports — before you write the offer.

See the Multifamily Program →

Frequently Asked Questions

What DSCR is required for a multifamily loan? +

1.20x for principal-and-interest loans and 1.25x for interest-only on our multifamily program (5+ units). The ratio is calculated on net operating income — collected rent minus vacancy and all operating expenses — against the annual debt payment. That's a stricter test than residential DSCR, which compares gross market rent to the mortgage payment.

How is multifamily DSCR different from residential DSCR? +

Residential DSCR (1-4 units) divides gross market rent by the full mortgage payment (PITIA). Multifamily DSCR divides net operating income — after vacancy, taxes, insurance, management, utilities, repairs, and reserves — by annual debt service. Because roughly 35-45% of gross rent typically goes to expenses, a building needs substantially more gross income per dollar of loan than a 1-4 unit rental would.

Why does interest-only require 1.25x instead of 1.20x? +

An interest-only payment is smaller than an amortizing payment on the same loan, which would let IO borrowers qualify for more debt on the same income. The higher 1.25x threshold offsets that: it tests the smaller IO payment against a stricter cushion, keeping leverage from ballooning simply because principal is deferred.

Do lenders use my actual expenses or their own estimates? +

Both — and they take the more conservative of the two, line by line. Underwriters compare your trailing-12 operating statements against market norms: if your self-managed building shows no management expense, they'll impute one; if your insurance is below market renewal quotes, they'll adjust it up; and they typically apply a minimum vacancy factor even if the building is 100% occupied.

What if my property doesn't hit 1.20x at 75% LTV? +

The loan gets smaller until it does. DSCR and LTV are two independent ceilings and the lower one wins — a building with thin cash flow might max out at 60-65% LTV even though the program allows 75%. The fixes are structural: a larger down payment, a longer amortization or different structure, documented rent increases, or expense corrections that raise underwritten NOI.

Can I use projected rents instead of in-place rents? +

Generally no — leverage is determined by in-place cash flow. Signed leases starting soon and documented, executed rent increases can count; pro-forma rents you hope to achieve after renovations cannot. If the value-add story is the whole deal, the usual path is bridge financing through stabilization, then permanent financing — including agency lease-up take-outs — once actual income supports it.

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DSCR Capital Partners is a brand of UTM Financial, LLC (NMLS #2591548), a licensed mortgage broker. The multifamily program described is offered through wholesale and correspondent lender partners in select major metropolitan markets only; terms are subject to change and final terms depend on full underwriting. Worked examples are illustrative, not quotes. Informational only; not a loan commitment or legal/tax advice. Equal Housing Lender.