Cap Rate Interview Questions for REPE: Formulas, Traps, and Model Answers

Cap rate questions are the heartbeat of REPE interviews. They look basic, which is why candidates get sloppy. Interviewers use cap rates to test whether you understand price versus yield, which NOI you are capitalizing, and how exit assumptions drive returns. If you can do the mental math and explain the traps, you clear a huge chunk of technical screens.

The core definition

Cap Rate = NOI ÷ Property Value (or Purchase Price)
Value = NOI ÷ Cap Rate

Cap rates move inversely with price for a given NOI. Lower cap = higher price. Higher cap = lower price.

Going-in vs exit cap

Which NOI belongs where

On a five-year hold, exit usually capitalizes Year 6 NOI, not Year 5. Buyers underwrite the first year they own.

Mental math drills interviewers love

Drill 1: NOI $8.4M, price $140M. Cap rate?
8.4 / 140 = 6.0%

Drill 2: NOI $6.0M, going-in cap 5.0%. Price?
6.0 / 0.05 = $120M

Drill 3: Forward NOI $7.0M, exit cap 5.5%. Gross exit?
7.0 / 0.055 ≈ $127.3M

Drill 4: Same exit, cap widens to 6.0%. New gross?
7.0 / 0.06 ≈ $116.7M

Be ready to do these without a calculator. Speed matters in REPE screens.

Cap compression and expansion

Compression: exit cap lower than entry cap → higher exit value for the same NOI path (all else equal). Needs a story: de-risked asset, stronger buyer pool, market yield decline.

Expansion: exit cap higher than entry → value headwind. Common stress case.

Cap rates vs IRR

Cap rate is a snapshot yield on NOI versus value. IRR is a time-weighted return on equity cash flows over the hold, including leverage, capex, and exit. Students sometimes treat them as substitutes. They are not.

A deal can have a low going-in cap (expensive entry) and still clear IRR if NOI growth and leverage work. Or a high going-in cap can still fail if capex and vacancy eat you alive.

How debt interacts

Lenders care about DSCR and LTV, not your marketing cap rate narrative. If you buy at a 4.5% going-in cap on in-place NOI, Year-1 cash flow may not support the leverage you want. That is how cap rate conversations connect to debt sizing.

Model answers (30 to 45 seconds)

"What is a cap rate?"
"NOI divided by value. It is the property's yield before leverage. Higher cap means higher yield and, for the same NOI, a lower price."

"Going-in vs exit?"
"Going-in uses entry NOI over purchase price. Exit uses the buyer's forward NOI over sale price. They answer different questions and should not silently reuse the same NOI definition."

"What happens if exit caps expand 50 bps?"
"Sale price falls roughly in proportion to the yield change, equity proceeds drop after debt payoff, and IRR/MoIC fall. I always sensitize exit cap because disposition dominates many returns."

"Would you buy a 4% cap deal?"
"Depends on NOI durability, growth, basis versus replacement, and financing. A 4% cap on fragile NOI is very different from a 4% cap on contractual, long-WALT cash flow in a deep market."

Extended interview follow-ups

Expect:

• Cap rate vs cash-on-cash return
• Effect of leverage on equity yield
• Why two buildings with the same NOI trade at different caps (location, credit, growth, risk)
• How you treat reserves / capex below NOI in valuation conversations

Practice plan

Day 1: 20 mental math flash drills (NOI, price, cap).
Day 2: Explain going-in vs exit with a five-year hold example.
Day 3: Build an acquisition model and shock exit cap ±50 bps.
Day 4: Answer "why would caps differ across two assets?" with three reasons.
Day 5: Timed mock: five cap rate questions back to back.

Practice on SheetRank

Sunbelt-style multifamily cases force you to touch going-in economics and exit capitalization with forward NOI. That is the same muscle REPE interviews test on a whiteboard.