What exit cap rate premium do underwriters typically apply?

Standard practice is 50–100 basis points above the going-in cap rate. A deal acquired at a 5.25% cap rate would use a 5.75–6.25% exit cap rate. Some aggressive underwriting desks use only 25–50bps, but this leaves minimal cushion for market shifts and property aging.

How do underwriters validate the borrower's going-in cap rate?

Compare the implied going-in cap rate (underwritten NOI ÷ purchase price) to recent comparable sales in the submarket, adjusting for property class, condition, and stabilization status. If the going-in cap rate is more than 50bps below comparable transactions, the purchase price may be aggressive.

Why is exit cap rate important for loan underwriting?

Exit cap rate determines the terminal property value, which must exceed the outstanding loan balance at maturity for the borrower to refinance or sell. If cap rates expand more than projected, the borrower may not be able to exit the loan—leading to maturity default risk even if the property performs well operationally.

How should underwriters stress-test cap rate assumptions?

Run scenarios at +50bps, +100bps, and +150bps above the base exit cap rate. At each level, calculate exit LTV, exit DSCR (for refinance viability), and remaining equity value. The loan should maintain acceptable LTV (below 75–80%) even under the +100bps stress scenario.

How to Use Cap Rate as an Underwriter

Role Context

For loan underwriters, the cap rate serves two distinct purposes: validating the borrower's purchase price (is the going-in cap rate reasonable?) and estimating terminal value for exit analysis. The exit cap rate assumption directly affects loan viability because it determines whether the borrower can refinance or sell at maturity.

For the complete formula and benchmarks, see our Cap Rate guide.

Going-In Cap Rate: Price Reasonableness Check

When a borrower requests a loan at a specific purchase price, the underwriter calculates the implied going-in cap rate and compares it to recent comparable transactions. If the implied cap rate is significantly below market, the borrower may be overpaying—increasing LTV risk and reducing the property's ability to be sold or refinanced at maturity.

Going-In Cap Rate = Underwritten NOI ÷ Purchase Price × 100

Use the underwriter's normalized NOI, not the borrower's pro forma

If comparable sales in the submarket are closing at 5.25-5.75% cap rates and the subject's implied cap rate is 4.50%, the underwriter should question the purchase price. Overpaying reduces the collateral cushion and increases the probability of a maturity default if values do not appreciate as projected.

Exit Cap Rate: The Terminal Value Assumption

For loans with a fixed term (typically 5-10 years), the underwriter must assess whether the borrower can exit—either through sale or refinance—at maturity. This requires an exit cap rate assumption:

Terminal Value = Year N NOI ÷ Exit Cap Rate

Terminal value must exceed the outstanding loan balance with adequate margin

The standard underwriting convention is to apply an exit cap rate 50-100 basis points above the going-in cap rate. This conservatism accounts for property aging, potential market shifts, and the uncertainty inherent in forward-looking assumptions. An underwriter who assumes cap rate compression at exit is taking unwarranted market risk.

Scenario	Year 7 NOI	Exit Cap Rate	Terminal Value	Loan Balance	Exit LTV
Base Case	$2.4M	5.75%	$41.7M	$22.8M	54.7%
Stress (+75bps)	$2.4M	6.50%	$36.9M	$22.8M	61.8%
Severe Stress (+150bps)	$2.4M	7.25%	$33.1M	$22.8M	68.9%

Even under severe stress, the exit LTV remains below 70%, indicating the loan has adequate collateral protection at maturity. If exit LTV exceeds 75-80% in a stress scenario, the underwriter should consider reducing loan proceeds.

Cap Rate in LTV Calculation

When a formal appraisal is not yet available, underwriters estimate the property's value using the income approach to calculate a preliminary LTV. The cap rate applied to underwritten NOI determines this value. Using a cap rate that is too low inflates the value and understates LTV, potentially approving a loan that is overleveraged.

Stress Testing Cap Rate Assumptions

Historical range analysis: Compare the going-in cap rate to the 10-year historical range for the submarket. If the borrower is buying at the bottom of the range, downside risk is elevated.
Rate sensitivity: Model how much cap rates need to expand before exit LTV exceeds the lender's comfort level (typically 75-80%).
Combined stress: Apply cap rate expansion simultaneously with NOI decline to model a recessionary exit scenario.

Common Underwriter Mistakes with Cap Rate

Assuming stable cap rates at exit: Always apply an exit cap rate premium over going-in. Properties age, markets cycle, and risk premiums fluctuate.
Using comparable transactions from a different cycle: A cap rate from 2021 (low-rate environment) is not applicable in 2025. Use the most recent 6-12 months of transactions.
Not adjusting cap rates for property condition: A newly renovated property and a deferred-maintenance property in the same submarket should not be valued at the same cap rate.

Run your own cap rate scenarios with our multifamily cap rate calculator. See how BubbleGum BI supports underwriting workflows on our solutions for owners and lenders.

Validate Cap Rate Assumptions with Market Data

BubbleGum BI provides underwriters with submarket-level cap rate benchmarks, comparable transaction data, and stress testing tools to ensure exit assumptions are defensible.

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