Free Cap Rate & Cash-on-Cash Calculator

Capitalization rate (cap rate) is the most quoted number in real estate investing, and the most commonly miscalculated. The formula is simple: Cap Rate = Net Operating Income (NOI) ÷ Purchase Price. The trap is in the NOI. Net operating income includes annual gross rent, plus other income (laundry, parking, pet fees), minus operating expenses: property taxes, insurance, property management (typically 8–10% of rent), repairs and maintenance (5–10%), vacancy allowance (5–8%), HOA dues, utilities the landlord pays, lawn care, snow removal, and a capital expenditure reserve (5–10% for roof, HVAC, water heater, appliances). What does not belong in NOI: mortgage principal and interest, depreciation, income taxes, and one-time capex like a full kitchen remodel — those live below the NOI line. Worked example: a $400,000 single-family rental with $36,000 in annual rent ($3,000/mo), $4,800 property tax, $1,800 insurance, $3,600 management, $2,400 repairs, $2,160 vacancy, and $1,800 capex reserve = $16,560 expenses. NOI = $36,000 − $16,560 = $19,440. Cap rate = $19,440 ÷ $400,000 = 4.86%. That same property pencils very differently if you skip the management fee and capex reserve — which is exactly how listing agents make pro formas look better than they really are. Our calculator forces every line item, so the cap rate you walk away with is defensible. Pair it with our free commission calculator when you're modeling a 1031 exchange or quick-flip exit.

Cap rate ranges in 2026 vary wildly by market and asset class, and the "national average cap rate" you see on Google is a meaningless blended number. Here's the honest playbook: Tier-1 coastal metros (NYC, San Francisco, Boston, Seattle, San Diego) Class A: 4.0–5.0%. Investors accept lower yields because appreciation and rent growth do most of the work. Sun Belt growth markets (Phoenix, Charlotte, Tampa, Austin, Nashville, Raleigh) Class B: 5.5–7.0%. The sweet spot for buy-and-hold investors who want both cash flow and appreciation. Midwest and smaller-market Class B/C (Cleveland, Indianapolis, Memphis, Birmingham, Kansas City): 7.0–10.0%+. Higher cap rates compensate for slower rent growth and thinner buyer pools at exit. Short-term rentals (Airbnb, VRBO): typically 8–12% on gross-rent-equivalent basis, but with double the expense ratio of long-term rentals. The non-negotiable rule: compare your prospect's cap rate to local sold comps in the same asset class — your title company can pull the last 6 months of investor sales in the same zip code. A 7% cap looks great in San Francisco and terrible in Memphis. If you're sizing up a property by physical specs, our square footage calculator helps you sanity-check the price-per-square-foot against neighborhood comps before you even open the spreadsheet.

This is the single most common confusion in rental property analysis, and it costs investors deals. Cap rate is unlevered — it ignores your mortgage entirely and tells you what the property earns in cash. Cash-on-cash return is levered — it tells you what your cash invested earns after debt service. Formula: CoC = (NOI − Annual Debt Service) ÷ Total Cash Invested. Total cash invested = down payment + closing costs + initial repairs + reserves. Worked example using the property from section 1 (NOI $19,440 on $400K): with a 25% down, 30-year mortgage at 7.0%, monthly P&I is $1,996, annual debt service $23,948. NOI minus debt service is negative $4,508 — this property has negative cash flow on paper. Total cash in: $100,000 down + $12,000 closing + $5,000 reserves = $117,000. Cash-on-cash = −3.85%. Now reverse it: same property, 7% cap, but rates drop to 5.5% — annual debt service falls to $20,439, cash-on-cash flips positive to ~−0.85%, and at 4.5% rates you'd see meaningfully positive cash-on-cash. Positive leverage (cap rate > interest rate) is what makes cash-on-cash exceed cap rate; negative leverage (the world we've lived in since 2023) means cash-on-cash is lower than the cap rate, and many "good" deals on paper are cash-flow negative. Use cap rate to compare properties; use cash-on-cash to decide whether your capital should go into this deal.

Debt Service Coverage Ratio is the metric that gets DSCR loans approved or rejected. Formula: DSCR = NOI ÷ Annual Debt Service. A DSCR of 1.00 means the property breaks exactly even on debt; 1.20 means the property generates 20% more income than the mortgage payment requires. Lender thresholds in 2026: 1.00 = absolute minimum, only some non-QM lenders will go this low and the rate premium is brutal. 1.20 = the standard floor for most DSCR investment loans (Visio, Kiavi, LendingOne, Lima One, Easy Street). 1.25–1.30 = where pricing gets noticeably better — typically 25–50 bps off your rate. 1.30+ = best-tier pricing, especially with 25%+ down. Using our $400K example: NOI $19,440 ÷ debt service $23,948 = 0.81 DSCR — declined by every DSCR lender. To fix a borderline DSCR you have three levers, ranked by effectiveness: (1) more down payment (going from 20% to 30% down on this property pushes DSCR from 0.74 to 0.94 — still short, but the math gets there with rent bumps); (2) raise rents via light value-add (paint, appliances, in-unit laundry) — every $100/mo of new rent adds ~$1,000 to NOI and ~0.05 to DSCR on a typical loan; (3) buy down the rate with discount points if you're holding 5+ years. Watch for lenders who calculate DSCR using market rent versus actual rent — a vacant property can still close on market rent, but the underwriter will want a 1.25+ DSCR on a market-rent basis to offset the lease-up risk.

The point of the calculator is speed. Here's the workflow that separates investors who close 4 deals a year from investors who analyze 400 deals and close zero. Step 1 — GRM screener (10 seconds per listing): Gross Rent Multiplier = Purchase Price ÷ Annual Gross Rent. Anything above 12 in a Sun Belt market or 15 in a tier-1 metro is almost always a pass on a buy-and-hold basis — the rents simply can't support the price. GRM is a fast first filter that doesn't require you to estimate a single expense. Step 2 — Cap rate (60 seconds per listing): if GRM passes, build a quick NOI using the line items in section 1 above and check the cap rate against local comps. Below market by more than 100 bps? Pass, unless there's a clear value-add story (under-rented, mismanaged, deferred capex you can fix). Step 3 — Cash-on-cash (90 seconds): add your actual financing terms — down payment %, rate, amortization. If cash-on-cash is below your hurdle (most buy-and-hold investors target 6–8% in 2026, BRRRR investors target 12%+ post-refi), pass. Step 4 — DSCR (10 seconds): if you're financing with a DSCR loan, confirm DSCR ≥ 1.20 before you spend another minute. Below 1.20 means you'd have to bring extra cash to qualify, which kills your cash-on-cash anyway. Properties that survive all four steps deserve a property tour, comp pull, and a written offer. For the marketing side of the equation — once you own the property and need to advertise the rental — pair this calculator with our listing description generator for the rental ad copy, and read our guide on commercial real estate photography for multi-family listings or the best camera for real estate video guide for STR walkthroughs. Investor-focused agents should also bookmark our real estate marketing guide for agents and consider AI virtual staging for vacant units to cut days-on-market and protect your projected rents.