A multifamily refinance equity gap is the cash shortfall when a replacement loan cannot cover the existing debt payoff and refinancing requirements. Positive property equity does not guarantee enough loan proceeds. In the hypothetical example below, a building has $1.4 million of equity but needs about $836,000 in cash to refinance after costs, reserves and credits.

Equity in a multifamily investment is property value minus debt. Refinance proceeds also depend on whether the property’s income can support the new loan payments. Freddie Mac’s January 2024 maturity-risk research illustrates how higher borrowing costs can strain refinancing even when income has grown. That historical analysis explains the mechanism; it does not establish August 2026 distress levels.

How value and income limit refinance proceeds

Loan-to-value, or LTV, limits borrowing against the lender’s accepted property value:

LTV loan limit = value × maximum LTV.

Debt-service coverage ratio, or DSCR, compares accepted annual cash flow with annual debt payments. A 1.25× minimum requires $1.25 of qualifying cash flow for each $1 of debt service:

Maximum annual debt service = qualifying cash flow ÷ required DSCR.

Convert that payment allowance into a loan amount using the underwriting interest rate and amortization schedule. The smaller of the LTV and DSCR loan amounts controls this calculation. Other underwriting conditions can reduce the actual commitment.

Thresholds depend on the product. Fannie Mae’s fixed-rate term sheet, for example, lists an 80% maximum LTV and 1.25× minimum DSCR for conventional properties, with amortization up to 30 years. The example below assumes a stricter 75% LTV.

Calculate the multifamily refinance equity gap

Assume a stabilized 24-unit apartment property with these hypothetical figures. They are modeling inputs, not market quotes or universal lending requirements.

NOI is property income after operating expenses, before debt service. It is not necessarily the cash flow used to calculate DSCR. Fannie Mae’s conventional underwriting calculation, for example, deducts replacement-reserve expense to reach underwritten net cash flow, even when that escrow is not funded. Here, $312,000 minus $12,000 leaves $300,000.

Before sizing debt, reconcile rental income and check rental operating assumptions, including vacancy, concessions, taxes and insurance.

Calculate both loan limits

For this simplified valuation, assume the lender accepts value calculated as NOI divided by the capitalization rate, or cap rate:

$312,000 ÷ 0.06 = $5,200,000.

The LTV limit is therefore $5,200,000 × 75% = $3,900,000.

The DSCR test permits annual principal and interest of $300,000 ÷ 1.25 = $240,000. At 6.50% with monthly payments amortized over 30 years, the annual mortgage constant—the annual principal and interest per dollar borrowed—is approximately 0.075848163.

To reproduce it, calculate constant = 12 × i ÷ [1 − (1 + i)^(−n)], where i is 0.065 ÷ 12 and n is 360. Then:

DSCR loan limit = $240,000 ÷ 0.075848163 ≈ $3,164,216.

Use the smaller limit: approximately $3.164 million. DSCR controls the loan amount even though LTV would allow $3.9 million.

Reconcile loan proceeds with cash required

The building’s equity is $5.2 million − $3.8 million = $1.4 million, before transaction costs. Yet the replacement loan falls about $636,000 short of the payoff. Closing requirements increase the cash contribution:

The general formula is payoff + costs + required deposits − gross loan proceeds − available credits, with a minimum cash contribution of zero. A negative result indicates potential excess proceeds, subject to the lender’s cash-out restrictions.

This financing shortfall does not, by itself, establish insolvency or predict default.

Which costs and reserves belong in the cash budget?

Request a dated payoff statement covering every lien being retired. Include accrued interest and any applicable prepayment premium; neither increases the stated payoff in this example.

Obtain quotes for lender and broker fees, legal work, appraisal, environmental and property-condition reports, title insurance and recording. Include prepaid interest and required tax, insurance, repair or replacement deposits. Fannie Mae’s December 2025 closing requirements require itemizing charges, upfront escrows, reserves and payoff interest.

Keep the two reserve assumptions separate. The example’s $12,000 annual reserve deduction reduces debt capacity; its $125,000 deposit requirement creates a funding need at closing. Escrowed money may remain an asset, but it cannot simultaneously pay off the old loan.

Count each charge once. If a lender quotes proceeds net of fees or reserves, reconcile them to gross proceeds before using the formula. Count refunds or transfers only if they are confirmed available at closing; a later refund cannot fund the closing wire. Separately budget any required liquidity that must remain after closing.

How changing assumptions affects the gap

These scenarios change one assumption at a time. Closing charges, deposits and credits remain fixed, as does the $12,000 annual reserve deduction. Results are rounded to the nearest $1,000.

Rate and amortization change how much income can support

A lower rate supports more principal within the same payment allowance. Shorter amortization raises payments and reduces proceeds while repaying principal faster. Longer amortization reverses that trade-off. Amortization is separate from the loan’s maturity date.

Interest-only payments do not necessarily increase underwriting capacity. Fannie Mae’s DSCR guidance uses amortizing payments even during an interest-only period and applies the greater of the note rate or required underwriting rate floor.

NOI and cap rates can change which limit controls

With NOI up 10%, qualifying cash flow becomes $331,200 and value rises to $5.72 million at the unchanged 6% cap rate. Both loan limits rise, but DSCR still controls.

At the unchanged $312,000 NOI, a 7.50% cap rate reduces value to $4.16 million. The 75% LTV ceiling falls to $3.12 million, below the unchanged DSCR ceiling. A lower interest rate alone would no longer increase proceeds under these assumptions.

Before committing capital, ask the lender to reconcile its accepted income, both loan limits and net funding. Then distinguish loan coverage from investor cash flow to assess whether the required contribution and ongoing cash flow support your ownership plan.