Cap rate is the fastest way real estate investors size up a deal, and also the fastest way to get misled by one. It compresses a property into a single percentage — the return you would earn if you paid all cash and nothing went wrong. That is useful for comparing listings quickly. It is not a substitute for reading the actual numbers behind the deal.
What changed in 2026
- Cap rates have moved with interest rates, and the gap between what sellers list and what buyers will actually pay has been the story of the last two years. Verify current local cap rates yourself rather than trusting an old market report.
- Lenders are underwriting more conservatively, which means deals that only work on optimistic NOI projections are getting rejected before they close.
- More listings now disclose trailing twelve-month financials instead of pro forma projections, making cap rate comparisons more honest than a few years ago.
The formula, in plain terms
Cap rate = Net Operating Income ÷ Purchase Price.
Net operating income (NOI) is rental income minus operating expenses — taxes, insurance, maintenance, management, and vacancy allowance — but before your mortgage payment. That last part trips up beginners constantly: debt service is a financing decision, not a property characteristic, so it stays out of the formula.
A property earning $60,000 in NOI on a $1,000,000 purchase price has a 6% cap rate. Buy the same property for $800,000 and the cap rate rises to 7.5% — same asset, better price, higher return.
What counts as a good cap rate
There is no universal answer; it depends entirely on the market and the risk profile of the asset.
| Property type / market |
Typical cap rate range |
What drives it |
| Class A apartments, major metro |
4–5.5% |
Low risk, strong tenant demand, less upside |
| Class B/C multifamily, secondary market |
6–8% |
More management work, more upside potential |
| Single-family rentals |
5–8% |
Varies widely by neighborhood and condition |
| Triple net commercial (see triple net lease basics) |
5–7% |
Long leases shift risk to the tenant |
| Distressed or value-add property |
8%+ |
Higher risk, often needs capital and work |
A high cap rate is not automatically a bargain — it usually means the market is pricing in more risk, more vacancy, or more deferred maintenance.
Cap rate vs cash-on-cash return
Cap rate ignores your financing. Cash-on-cash return does not — it measures actual cash flow against the cash you put in, after debt service. Two investors can buy the identical property at the identical cap rate and get very different cash-on-cash returns depending on their loan terms. If you are comparing a leveraged rental purchase to an unleveraged one, like REIT investing versus direct ownership, cap rate alone will not tell the full story.
Common pitfalls
- Trusting a seller pro forma. Ask for trailing twelve-month actuals, not projected rents after renovations that have not happened yet.
- Ignoring capital expenditures. A roof or HVAC replacement due next year should factor into your real return, even though it does not appear in the NOI line.
- Forgetting vacancy in hot markets. A 0% vacancy assumption is a red flag on any pro forma, no matter how tight the market looks today.
This is general information, not financial, legal, or tax advice — run your own numbers and talk to a professional before committing capital.
FAQ
Is a higher cap rate always better?
No. It usually signals higher risk — a rougher neighborhood, older building, or thinner tenant demand — not a hidden bargain.
Does cap rate account for appreciation?
No, it is a snapshot of current income return only. Long-term total return also depends on appreciation and loan paydown.
Can cap rate go negative?
Effectively, yes, if operating expenses exceed rental income, though that usually signals a property is not viable as currently run.
How do I find local cap rates?
Ask a commercial broker for recent comparable sales, or check listing data for trailing NOI on similar properties in your target area.
Where to go next
For related fundamentals, see REIT vs direct real estate ownership, what a triple net lease means for investors, and commercial vs residential real estate.