Free Tool

Cap Rate Calculator

Calculate the cap rate of any property in seconds. Solve for cap rate, or solve for value at a target cap rate. Built for small multifamily operators.

$

NOI = gross rent + other income − operating expenses. Excludes mortgage.

$

What you'd pay all-cash for the property today.

Or load an example
Cap Rate
6.40%
$48,000 NOI ÷ $750,000 value
5% – 6.5%
Premium Market
Stabilized Class A/B in strong secondary markets (Austin, Denver, Raleigh, Nashville). Reasonable for institutional product. Tight cash flow margins; debt service coverage is the watchout.
The Basics

What is cap rate?

Cap rate (capitalization rate) is the ratio of a property's net operating income to its value. It tells you the unlevered yield — what you'd earn annually if you paid all cash and had no mortgage.

It's the most common metric for comparing properties because it strips out the noise of how different buyers might finance the same deal. Two investors looking at the same building see the same cap rate, even if one is paying cash and the other is putting 25% down.

The Formula
Cap Rate = Net Operating Income ÷ Property Value × 100
Example: A 12-unit Class B with $96,000 annual NOI selling for $1,500,000.
$96,000 ÷ $1,500,000 × 100 = 6.4% cap rate.

What goes into NOI: Gross rent + ancillary income (laundry, parking, late fees) − operating expenses. Opex includes property tax, insurance, property management, repairs, maintenance, utilities you pay, and a vacancy allowance (typically 5–8%).

What does NOT go into NOI: Mortgage payments, capital improvements, or depreciation. Those affect your levered returns and tax picture, but not the property's underlying yield.

Market Context

What's a "good" cap rate?

Depends entirely on market, asset class, and your strategy. Here's how to read different cap rate ranges for small multifamily in the current rate environment.

< 5%

Aggressive / Coastal Trophy

Typical for stabilized Class A in tier-1 coastal markets (SF, NYC, Boston, LA). Operators are paying for safety + appreciation, not yield. At this level you're usually losing cash flow to long-term wealth play.

5% – 6.5%

Premium Market

Stabilized Class A/B in strong secondary markets (Austin, Denver, Raleigh, Nashville). Reasonable for institutional product. Tight cash flow margins; debt service coverage is the watchout.

6.5% – 8%

Solid Multifamily Market

The sweet spot for most small multifamily operators today. Cash flow positive after debt service, room for value-add upside. Most 30-100 door operators target this band.

8% – 10%

High Yield / Value-Add

Either tertiary market product or properties with operational/physical upside. Strong day-1 cash flow but inspect for deferred maintenance, tenant quality, market trajectory. Common in Midwest secondary.

10%+

Speculative / High Risk

Usually distress, declining markets, or aggressive seller pro-forma vs actuals. Diligence with extreme care. Real returns are often 200-400 bps lower than headline once you account for real expenses, vacancy, and capex.

Comparisons

Cap rate vs cash-on-cash return

They're different lenses on the same deal. Cap rate is property-level yield (unlevered). Cash-on-cash is your personal cash yield after debt service (levered).

Cap Rate
NOI ÷ Value

Independent of financing. Used to compare properties. Same answer whether you pay cash or finance.

Cash-on-Cash
Cash Flow ÷ Cash Invested

After debt service. Used to evaluate your personal return. Can be 2-3x the cap rate when financed aggressively.

On a property with a 6.5% cap rate, financing 75% LTV at 7% debt cost might produce a cash-on-cash return of 5-9% depending on terms. Both numbers matter. Cap rate sets the ceiling on what financing can do.

Watch-outs

Common cap rate mistakes

01Using gross income instead of NOI

The single most common cap rate mistake. Gross rent isn't NOI — you have to subtract operating expenses first. A property at $120k gross income with $48k opex has $72k NOI, not $120k. Using gross numbers inflates cap rate by 40-60%.

02Skipping vacancy/turnover allowance

Even a fully-occupied property should be underwritten with 5-8% vacancy allowance. The day one tenant leaves and the unit sits empty for 30 days during turnover, your cap rate drops. If you skip this, you're using best-case numbers.

03Believing the seller's pro forma

Brokers and sellers will show you a pro forma where rents are pushed to market and expenses are aspirationally lean. Always run cap rate on T-12 actuals first. Use pro forma to evaluate upside, not price.

04Forgetting property management cost

If you're not paying yourself for PM time, your NOI is inflated by 6-10%. Underwrite a market-rate PM line (8-10% of gross for small multifamily) even if you self-manage. Otherwise you can't compare your deal to a deal you'd hire PM for.

05Comparing cap rates across markets/classes

A 7% cap rate in Phoenix Class A means something completely different than 7% in rural Ohio Class C. Compare cap rates within the same market and asset class, not across them.

FAQ

Frequently asked questions

What is cap rate?+
Cap rate (capitalization rate) is the ratio of a property's net operating income (NOI) to its current market value or purchase price. It tells you the unlevered yield — what your annual return would be if you paid all cash. Formula: Cap Rate = NOI ÷ Property Value × 100. A property generating $80,000 of NOI at a $1,000,000 value has an 8% cap rate.
What's a good cap rate?+
Depends entirely on market, asset class, and your strategy. For small multifamily today, most operators target 6.5%–8%. Below 5% is usually a trophy/appreciation play in tier-1 markets. Above 10% almost always signals risk — either tertiary market, deferred maintenance, or seller pro-forma vs actuals. The right cap rate is one that pencils with your debt cost and risk tolerance.
Cap rate vs cash-on-cash — what's the difference?+
Cap rate is the unlevered yield — what you'd earn if you paid all cash, ignoring financing. Cash-on-cash is the levered yield — your annual cash flow divided by the actual cash you put down. If you finance 75% of the deal, cash-on-cash can be 2-3x your cap rate. Both matter: cap rate tells you the property's intrinsic yield; cash-on-cash tells you your personal return.
What counts as NOI?+
Net operating income = gross rental income + other income (laundry, parking, fees) − operating expenses. Operating expenses include property tax, insurance, property management, repairs/maintenance, utilities you pay, and a vacancy/turnover allowance (typically 5–8%). NOI does NOT include mortgage payments, capex/improvements, or depreciation. Those come below the line.
Does cap rate include the mortgage?+
No. Cap rate is a property-level metric, independent of how you finance it. The mortgage affects your cash-on-cash return, IRR, and equity multiple — not cap rate. This is why cap rate is the standard way to compare properties: it strips out the noise of different financing structures.
How does cap rate change with interest rates?+
Cap rates and interest rates move together over long cycles — when borrowing costs rise, buyers demand higher cap rates to keep deals working, so prices fall. After 2022-2023 rate hikes, cap rates expanded 75-150bps in most US multifamily markets. The spread between cap rate and debt cost (typically 100-200bps) determines whether deals pencil.
Should I use trailing-12 NOI or pro forma?+
Use trailing-12 (T-12) actuals for the cap rate you're buying. The seller's pro forma is what they think the property could earn — useful for value-add planning but never for the price discussion. If a seller's pro forma cap rate is 8% and T-12 actual cap rate is 5.5%, you're paying 8% but buying 5.5% of cash flow on day 1.
What's the relationship between cap rate and property value?+
Cap rate and value are inversely related. At a fixed NOI, lower cap rate = higher value. If a property has $60,000 NOI: at a 6% cap rate it's worth $1,000,000; at a 7.5% cap rate it's worth $800,000; at a 10% cap rate it's worth $600,000. This is also why operational improvements (raising NOI) compound — every dollar of recurring NOI added is worth roughly $12-15 in property value at typical cap rates.
Why does cap rate matter for small multifamily specifically?+
Small multifamily (under 100 units) often trades at 50-150bps higher cap rates than institutional product in the same market — because the institutional buyer pool is smaller. Operators who can run small multifamily efficiently can capture meaningful yield premium over what a Yardi-running REIT could justify.
What's a 'cap rate compression' market?+
When buyer demand exceeds supply, multiple bidders push prices up — which by definition compresses cap rates (since price went up but NOI didn't). Sunbelt markets compressed dramatically 2020-2022 before reversing in 2023. The opposite (cap rate expansion) is when prices fall faster than NOI declines, which is what most US markets saw 2023-2025.
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