A good cap rate for a rental property in 2026 is 7% to 9% in most of the markets we lend in. Below 7%, today's debt costs mean you're probably feeding the property every month unless you're betting on appreciation. Above 9%, the market is paying you extra to take a risk it has already noticed, and your job is to find out what that risk is before you close. That's the short answer. The rest of this post is the math behind it, because the investors who get hurt by cap rates are rarely the ones who can't calculate them. They're the ones who don't know what the number is quietly assuming.
What a cap rate actually measures
A cap rate (capitalization rate) is a rental property's annual net operating income divided by its purchase price. Net operating income, or NOI, is the rent minus operating expenses like taxes, insurance, management, maintenance, and a vacancy allowance. It does not include the mortgage. A property that costs $200,000 and clears $15,000 a year before debt service is a 7.5% cap.
Two things follow from that definition, and both get ignored.
First, the cap rate is a debt-free number. It measures what the building earns, not what you earn. Your return depends on how you finance the deal, which is why two investors can buy identical 7.5-caps and one makes 11% on their cash while the other loses money every month.
Second, the expense line is where cap rates get faked. A listing pro forma that assumes 25% expenses will show you a beautiful cap rate. On the working-class rentals that make up most of our loan book, real operating expenses run 35% to 45% of collected rent once you count vacancy and turnover, plus the roof that doesn't care about your spreadsheet. Recalculate every advertised cap with your own expense number. The advertised one is marketing.
Cap rate vs. gross yield: the mix-up that costs real money
Most numbers quoted in listings and at meetups aren't cap rates at all. They're gross yields: annual rent divided by price, expenses ignored. When we published our breakdown of where rental yields are strongest in the Mid-Atlantic, those were gross yields. Middle River and Dundalk at 11.2%, Patterson Park at 9.4%. Run a realistic 40% expense load against that 11.2% and you get roughly a 6.7% cap. Still strong. But it's a different number, and if you compare a "cap rate" someone derived from rent-divided-by-price against a true cap rate built on real expenses, you're comparing apples to a smaller apple.
The 1% rule is the same shortcut wearing different clothes. A $160,000 house renting for $1,900 a month passes it with room to spare, and that's a useful 30-second screen. Just know that after real expenses it pencils to roughly an 8.5% cap, not the 14% gross the rule implies. Screens find deals. Caps underwrite them.
Why 2026 debt costs set the floor
A cap rate only tells you whether a deal is good relative to what money costs, and right now DSCR rates average about 7.1%, with ours starting at 6.125%.
The comparison that matters is cap rate against your loan constant: a year of principal and interest divided by the loan amount. At a 7% rate on a 30-year amortization, the constant works out to about 8%. Buy above it and financing amplifies your return. Buy below it and financing eats your return, which the industry politely calls negative leverage.
Numbers make it obvious. Take a $200,000 property at 75% LTV: a $150,000 loan at 7%, about $12,000 a year in debt service.
- At an 8.5% cap, NOI is $17,000. You clear about $5,000 on $50,000 invested. That's 10% cash-on-cash, better than the unlevered 8.5%.
- At a 6% cap, NOI is $12,000. You clear about nothing on the same $50,000. The building earns 6% and every dollar of it goes to the lender.
Same financing, same price. The cap rate decided which investor got paid. It's also why cap rates and the DSCR ratio travel together: a property bought below roughly a 7% cap in this rate environment usually can't hit a 1.2 DSCR at 75% LTV without a bigger down payment.
What a good cap rate looks like by market type
Cap rates aren't one national number, so calibrate by what the market is selling you.
Appreciation markets run low. Arlington, Alexandria, Bethesda, and close-in DC trade at gross yields of 5% to 6%, which is a cap in the 4s after expenses. Buyers there are underwriting equity growth, not income, and at 2026 debt costs those deals need large down payments just to break even monthly.
Stabilized workforce rentals across our footprint are where the 7% to 9% caps live: the Baltimore metro, Central PA, Richmond, and Hampton Roads. That's the band where the rent covers the debt with margin and the DSCR math works at normal leverage.
Above 10%, you've left "good deal" and entered "priced risk." Think heavy-turnover blocks, or rural properties with no real comps. Sometimes that risk is manageable and the double-digit cap is real money. Often the expense assumption is fiction. The Mid-South and Midwest markets where out-of-state investors are buying sit in between: 8% to 12% gross yields that pencil to solid caps when the property manager holds expenses down.
What moves cap rates from here
Cap rates track the 10-year Treasury plus a risk premium, the way every income stream gets priced. When the 10-year falls a point and stays there, caps compress behind it, slowly, because sellers adjust faster to good news than buyers do to bad.
The other mover is the expense line. Insurance renewals are running 10% to 20% higher across our book, and rising premiums come straight out of NOI, which pushes true caps down even while asking prices pretend otherwise. When you underwrite a 2026 purchase, use this year's insurance quote and next year's tax assessment, not the seller's trailing twelve months.
A good cap rate is the one you calculated yourself, not the one in the listing. If your number says 7% or better with honest expenses and current debt costs, the deal can carry itself. If it says 5% and your plan is "rents will grow," you're not buying an income property. You're buying a hope with a roof on it.
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Frequently asked questions
Do cap rates include the mortgage payment?
No. Cap rate is calculated before any debt: net operating income divided by price. That makes it useful for comparing properties regardless of financing, and useless on its own for predicting your monthly cash flow.
Is a higher cap rate always better?
No. A high cap is compensation for risk the market has already priced in, like a tougher tenant base or aging systems. A 10-cap that runs 20% vacancy nets less than a well-run 7.5-cap.
What cap rate do lenders require?
On 1-4 unit rentals, lenders don't underwrite the cap rate directly. They underwrite DSCR, the rent against the proposed payment, and most programs want 1.0 to 1.25. A property bought at a healthy cap usually clears DSCR automatically; that's the connection.
Does cap rate matter for a fix and flip?
Not really. Flips are priced on after-repair value and margin, not income. The cap rate starts mattering the day you decide to keep the property as a rental instead of selling it.