Cap Rate vs Yield and Yield on Cost: Pricing a Deal You Plan to Fix

Cap rate and yield get used as if they were the same word. They are not. Cap rate is net operating income divided by the price. Rental yield is often that same math, and just as often it is run on gross rent instead of net income, which gives a much bigger number. Yield on cost is net operating income divided by every dollar you put in, purchase price plus the renovation.

Buy a finished house and the three numbers sit close together. Buy a house to fix and re-rent, and they split. The cap rate on your purchase price flatters you, because it credits income the property cannot produce until you spend more money.

Is cap rate the same as yield?

Not quite. Cap rate is one specific yield: first-year net operating income over the price or value of the property. The word yield is broader. It can mean gross rent over price, net income over price, income over total cost, or the whole return across a holding period. When somebody quotes a yield, ask what sits on top of the fraction and what sits underneath. That single question settles most arguments about cap rate and yield. The same mix-up happens with cap rate and ROI.

The three numbers side by side

Start with the standard example on this site: a $500,000 house renting for $4,000 a month. Gross rent is $48,000. At 5% vacancy you collect $45,600. Taxes run $6,000, insurance $2,500, and 18% of collected rent, $8,208, covers maintenance, reserves and management. Net operating income is $28,892.

Cap rate

$28,892 divided by $500,000 is 5.78%. The denominator is price or market value. No financing, no renovation.

Rental yield

Net rental yield is the same 5.78%. Gross rental yield skips the expenses: $48,000 over $500,000 is 9.6%. Gross yield is fine as long as you remember it ignores every bill. It is the inverse of the gross rent multiplier, which here is 10.4 times gross rent.

Yield on cost

Often written YoC. Stabilized net operating income divided by total project cost: purchase, closing, construction, and holding costs while the work runs. On a finished house bought at $500,000 with nothing to do, yield on cost and cap rate are the same number. The moment you spend a dollar on the building, they part.

Why the purchase price is the wrong denominator for a renovation

A renovation deal keeps two sets of books. On one side is what you pay the seller. On the other is what you pay the roofer, the plumber, the lender and the tax collector while the house sits empty. Rent after the work has to pay for both.

Divide post-renovation income by the purchase price alone and you get a number nobody can buy. On the house below, $28,892 of stabilized income over a $400,000 purchase price reads 7.22%, which looks strong in a market where finished houses trade at 5.78%. That 7.22% is not real. It answers a question nobody asked.

Yield on cost asks the right one: for everything I spend, how much income do I end up with?

Working a value-add deal: cost in, income out

Same house, rough shape, vacant, listed at $400,000. It cannot be rented until it is repaired.

• Purchase price: $400,000
• Renovation: $60,000
• Closing costs plus taxes, insurance and utilities during the work: $12,000
• Total cost in: $472,000

After the work it rents for $4,000 a month, the market rent from the standard example. The expense assumptions do not change: 5% vacancy, $6,000 of taxes, $2,500 of insurance, 18% of collected rent. Stabilized net operating income is $28,892.

Yield on cost is $28,892 divided by $472,000, or 6.12%.

Finished houses in this market trade at a 5.78% cap rate. Capitalize the same income at that rate and the house is worth about $500,000. You spent $472,000 to own $500,000 of property, so the work created roughly $28,000 of value before selling costs.

Now let the budget run over. Ninety thousand dollars of work instead of sixty puts total cost at $502,000, and yield on cost drops to 5.76%, just under the market cap rate. The finished house is then worth less than the project cost. The rent never changed. The cost denominator did, and that is the whole case for watching it.

The development spread and what counts as enough

The gap between yield on cost and the market cap rate is the development spread, also called the return on cost spread. In the first case it is 6.12% against 5.78%, a spread of 0.34 points, or 34 basis points. In the overrun case it is negative.

There is no official threshold. Commercial developers often talk about wanting one to two points of spread over the cap rate they expect when they sell, because the spread has to absorb construction risk, lease-up risk and the chance cap rates rise while they build. Single-family and small multifamily projects usually run thinner than that, and much of the payoff arrives as forced equity and a refinance rather than as yield. A 34 basis point spread leaves little room for error. To widen it, push on the purchase price or the scope of work, not on the rent assumption.

One caution about the exit. The spread is measured against the cap rate the market will pay later, not the one it pays today. If cap rates drift to 6.5%, the same $28,892 of income supports a value near $444,000, and a profitable project becomes a loss.

What yield means outside the United States

In the UK, Australia, New Zealand and much of Europe, agents quote rental yield instead of cap rate. Gross yield is annual rent over price, the 9.6% above. Net yield takes out operating costs and lands on the cap rate, 5.78%. Same arithmetic, different label. Published figures are usually gross, which is why overseas rental numbers look so high beside American cap rates.

Bond and stock language adds another layer, where yield often means a return earned over time, the way the internal rate of return blends income with sale proceeds. A cap rate is one year’s snapshot and knows nothing about year five.

Picking the right one for your deal type

Buying a stabilized rental: use the cap rate. It prices the property against comparable sales and it is the language brokers and appraisers speak.

Buying to renovate, build or reposition: use yield on cost to underwrite the project, then the market cap rate to value the finished product. Both, in that order.

Comparing markets or countries: match the definitions first. Gross against net misleads you by nearly four points on this example alone.

Judging your own return after a loan: neither one. Cap rate and yield on cost both ignore the mortgage, and that comparison belongs in cap rate against cash on cash return.

Run your own numbers

The cap rate calculator on the home page takes these inputs directly: price, rent, vacancy, taxes, insurance and the maintenance share. For a cap rate, enter the purchase price. For yield on cost, enter total cost in the price field instead, purchase plus renovation plus holding costs, and keep the stabilized rent. The simple tab handles the one-line version when you already know the income: $30,000 of net operating income on $500,000 is 6%. Run it both ways and look at the gap.