Real Estate Tax Calc
Why cap rates differ
A cap rate reflects the market's assessment of income stability and risk. Property types with more stable, predictable income tend to trade at lower (compressed) cap rates; riskier or less liquid types require higher cap rates to attract capital.
Approximate ranges by type
These are broad ranges and vary significantly by market: Multifamily apartments: 4–6%. Single-family rentals: 5–8%. Industrial/warehouse: 4–6%. Retail (neighborhood centers): 5–8%. Office: 6–9% (elevated in recent years due to remote work concerns). A well-leased Class A warehouse in a coastal market can trade below 4%; a rural strip center can trade above 10%.
Market matters as much as type
High-demand coastal markets compress cap rates across all property types — sometimes 3–4% for multifamily in gateway cities. Midwest and Sun Belt secondary markets often trade 2–4 points higher for the same asset. Lower cap rate means higher price for the same income stream, reflecting stronger demand and lower perceived risk.
How to calculate a cap rate
A capitalization rate is simply net operating income (NOI) ÷ property value or price. NOI is annual rental income minus all operating expenses — property taxes, insurance, management, maintenance, any owner-paid utilities, and a vacancy allowance — but before mortgage payments, depreciation, and income taxes. Example: a fourplex produces $60,000 in gross rent, loses $4,000 to vacancy, and incurs $26,000 in operating expenses, for an NOI of $30,000. At a $500,000 price the cap rate is $30,000 ÷ $500,000 = 6%. Rearranged, the formula also gives value: NOI ÷ cap rate. If comparable fourplexes trade at a 5% cap, that same $30,000 NOI implies a $600,000 value.
What drives the differences between property types
Cap-rate spreads between asset classes come down to income durability and effort. Multifamily and industrial trade at low cap rates because housing demand is broad and warehouses often carry long leases to creditworthy tenants with minimal landlord duties. Office carries higher cap rates because leases are long but re-tenanting is expensive and remote work has clouded demand. Retail depends heavily on location and tenant mix. Hotels and short-term rentals sit at the highest cap rates of all because their income resets nightly and is highly sensitive to the economy. In short, the more stable and hands-off the cash flow, the lower the cap rate buyers will accept.
Cap rates move with interest rates
Cap rates don't exist in a vacuum — they trade at a spread over the 10-year Treasury yield. When risk-free rates rise, investors demand higher cap rates (lower prices) to keep real estate competitive; when rates fall, cap rates compress and values rise. During the low-rate 2010s, cap rates fell to historic lows across every property type. As rates climbed in 2022–2024, cap rates widened and many valuations reset downward. This is why a “good” cap rate is always relative to the current rate environment and to your own cost of borrowing.
Property class within a type
Within any asset class, quality tiers matter. Class A properties — newer, prime locations, strong tenants — command the lowest cap rates because they're seen as safe and liquid. Class B properties are older but well-located and trade a point or two higher. Class C properties are older, in weaker areas, or need work, and carry the highest cap rates to compensate for turnover, deferred maintenance, and financing difficulty. A 5% cap on a Class A apartment building and a 9% cap on a Class C building in the same city can both be fairly priced given their very different risk profiles.
A worked comparison of two deals
Consider two properties, each with $40,000 of NOI. Property A is a stabilized suburban apartment building priced at $800,000 (a 5% cap). Property B is a single-tenant retail store priced at $500,000 (an 8% cap). The 8% cap looks more attractive on paper, but if that retail tenant leaves, the building may sit empty for a year and cost tens of thousands to re-lease, while the apartments simply re-rent unit by unit. The extra three points of cap rate is the market pricing that risk, not handing you free return. Always ask what a higher cap rate is compensating you for.
Common cap-rate mistakes
The most frequent error is trusting a broker's pro-forma NOI — projected, optimistic numbers — instead of actual in-place income and expenses. A second is omitting reserves and management from expenses, which inflates NOI and understates the true cap rate. A third is comparing cap rates across markets without adjusting for growth: a 4% cap in a fast-growing metro may outperform a 9% cap in a shrinking town. Finally, remember cap rate ignores financing entirely — two investors buying the same 6%-cap building can earn very different cash-on-cash returns depending on their loans.
Compare the cap rate to your cost of capital
A cap rate is only “good” relative to your alternatives. Line it up against your mortgage rate first: if you can borrow at 6% and the property caps at 5%, each borrowed dollar earns less than it costs — negative leverage that pulls your cash-on-cash return below the cap rate. When the cap rate exceeds your loan rate, leverage works in your favor. Also compare the cap rate to truly passive yields like Treasury bonds; real estate should pay a risk premium over the risk-free rate to compensate for illiquidity, management, and vacancy. If a property's cap rate barely beats a government bond, you're taking on a lot of work and risk for little extra reward.
Cap rate versus quick screens like GRM and the 1% rule
Investors use several shortcuts to filter deals, and they answer different questions. The gross rent multiplier (GRM) — price ÷ annual gross rent — and the 1% rule — monthly rent ≥ 1% of price — ignore expenses entirely, so they're fast but crude. The cap rate is more precise because it uses NOI after operating costs, capturing the reality that a property with high taxes or heavy management is worth less than its gross rent suggests. Use GRM and the 1% rule to screen a long list quickly, then compute a real cap rate on the survivors before making an offer.
Value-add: buying at a high cap and compressing it
Much of the return in commercial and multifamily investing comes from raising NOI after purchase. Buy a mismanaged building at a high going-in cap rate, then increase rents to market, cut wasteful expenses, and add income streams. Because value = NOI ÷ cap rate, every extra dollar of stabilized NOI is worth many dollars of value at the prevailing market cap rate. If the market cap is 6%, adding $10,000 of annual NOI creates roughly $167,000 of value. This “cap-rate compression through NOI growth” is the engine behind value-add strategies, and it's why a higher going-in cap rate on a fixable property can be an opportunity rather than just a risk flag.
Why office cap rates climbed
Office deserves special mention because its cap rates rose sharply in the 2020s. The shift to remote and hybrid work pushed up vacancy, shortened effective lease terms, and made lenders wary, so buyers demanded far higher cap rates — and lower prices — to take on the risk. Class B and C office in weaker submarkets was hit hardest, with some buildings repricing dramatically or converting to other uses. The lesson generalizes: a property type's cap rate range isn't fixed. Structural changes in how tenants use space can move an entire asset class, so treat published ranges as a snapshot, not a permanent law.
Using cap rate to set an offer price
Because value = NOI ÷ cap rate, you can reverse the formula to price a deal. Estimate the property's realistic stabilized NOI using in-place income and honest expenses (including reserves and management), then divide by the cap rate that comparable sales support in that market. If a fourplex nets $30,000 and similar properties trade at a 6% cap, your supported value is about $500,000. Run a sensitivity check: at a 5.5% cap it's ~$545,000, at 6.5% it's ~$462,000. That range tells you how much a small shift in market cap rate moves the price, and it keeps you from overpaying when a broker quotes an optimistic NOI or an aggressively low cap rate.
A cap rate is a snapshot, not a projection
Remember that a cap rate reflects a single year's income at a single price — it says nothing about the future. It doesn't capture rent growth, upcoming lease rollovers, or a looming capital expense like a roof or parking lot due in three years. Two properties can both show a 6% cap today yet diverge sharply over a decade because one sits in a growing market with rising rents and the other faces flat demand and deferred maintenance. For anything beyond a quick comparison, pair the cap rate with a multi-year pro forma and an internal rate of return (IRR) that models rent growth, expenses, capital costs, and an eventual sale. The cap rate tells you where a deal starts; only a fuller projection tells you where it ends up.
Frequently asked questions
Is a higher cap rate always better?
Not necessarily — a higher cap rate often signals more risk, a weaker location, or less stable tenants.
What cap rate should I target?
Compare cap rates to local alternatives and to your cost of debt. A cap rate below your mortgage rate creates negative leverage.
What's the difference between a cap rate and cash-on-cash return?
Cap rate measures a property's unleveraged yield (NOI ÷ price) and ignores your mortgage. Cash-on-cash return measures after-financing cash flow against the actual cash you invested, so it reflects your leverage.
What is a “going-in” versus an “exit” cap rate?
The going-in cap rate is based on today's NOI and purchase price. The exit (or terminal) cap rate is what you assume a future buyer will pay when you sell — usually estimated a bit higher than today's to stay conservative.
Should I use market rent or actual rent in the NOI?
Use actual, in-place income to judge what you're buying today, then separately model market rent to estimate upside. Underwriting on market rent alone is how investors overpay.
Can the cap rate be too low to make sense?
Yes. When a property's cap rate falls below your mortgage rate, you have negative leverage, and if it barely beats a risk-free Treasury yield you're being paid too little for the risk and effort. A very low cap rate only makes sense when strong rent growth or appreciation is expected.
Educational information and estimates only. Not tax advice. Tax rules change and vary by situation; consult a qualified tax professional before acting.