IRR in Real Estate, Explained Without the Jargon

Cap rate tells you about one year. Cash-on-cash tells you about one year. Real estate is held for five, ten, thirty years, and the sale at the end is often the largest single cash event in the whole deal.

IRR is the metric that handles all of it at once. It is also the metric most often quoted without being understood, including by people raising money from you.

What IRR actually answers

Internal rate of return is the annualized return that accounts for the size and the timing of every cash flow in a deal.

The mechanical definition: IRR is the discount rate at which the present value of all cash inflows equals the present value of all outflows. Set the net present value to zero, solve for the rate, and that rate is the IRR.

The intuitive version is more useful. Imagine a savings account that pays a constant rate. You deposit your equity at closing, withdraw the cash flow each year, and withdraw the sale proceeds at the end. The IRR is the interest rate that account would need to pay to produce exactly those withdrawals from exactly that deposit.

That is why timing matters so much. A dollar received in year one and a dollar received in year ten are not equal, and IRR is the only common metric that prices that difference.

A worked five-year hold

A fourplex bought for $500,000 with 25% down.

Cash flows:

The year 5 sale: NOI of $36,579 capitalized at 6.75% gives a sale price of about $542,000. Subtract 6% selling costs and the remaining loan balance of roughly $353,000, and net proceeds land near $196,900.

IRR: approximately 12.4% Equity multiple: 1.60x — $223,647 total returned on $139,000 invested

Now notice what the single-year metrics said about this same deal. The cap rate was 6.5%. The year-one cash-on-cash was 2.4%. Either number in isolation makes this look like a weak deal. The IRR says otherwise, because most of the return is in principal paydown and the sale, neither of which shows up in a year-one snapshot.

That is the case for IRR. It is also, immediately, the case for being careful with it.

Where IRR misleads

1. It is dominated by the exit assumption

In the example above, the sale contributes more to the IRR than five years of cash flow combined. And the sale price came from one input: the exit cap rate.

Change the exit cap from 6.75% to 7.5% — a 75 basis point move, entirely plausible over five years — and the sale price drops to roughly $488,000. Net proceeds fall to about $106,000, and the IRR falls to roughly 2.9%.

Same building, same rents, same operations. One assumption about a future market condition nobody can forecast, and the deal went from good to barely worth doing.

Any sponsor presenting a projected IRR is presenting an exit cap rate assumption in disguise. Ask what it is. If it is lower than the cap rate they are buying at — that is, if they are assuming they will sell into a stronger market than they bought in — treat the entire projection with suspicion. Underwriting exit cap at 25–50 bp above entry cap is the conservative convention, and it exists for good reason.

2. Short holds inflate it

IRR is annualized, so a large gain over a short period produces a spectacular number that may represent very little money.

Flip a property in four months for a $40,000 profit on $200,000 of equity and the IRR is roughly 76%. Hold a rental for ten years and double your equity and the IRR is about 7%. The first number is much larger. The second may well have made you more money, and it did so without requiring you to find another deal three times a year.

IRR measures the rate at which capital compounds while deployed. It says nothing about how long you can keep it deployed, and the gap between “high IRR” and “high return” is exactly the reinvestment problem.

3. It says nothing about scale

A 30% IRR on $20,000 and a 12% IRR on $2 million are not comparable as life outcomes. IRR is a rate; it has no size.

This is why equity multiple should always be read next to it.

Read IRR and equity multiple together

Equity Multiple = Total cash returned ÷ Total cash invested

No time value, no annualization — just how many times your money came back.

The two can point in opposite directions, and the disagreement is informative:

• High IRR, low multiple (say 25% IRR, 1.3x): a fast deal. Real return, but you now need somewhere to put the money.
• Low IRR, high multiple (say 9% IRR, 2.4x): a long hold. Less impressive annually, more money in absolute terms, and no reinvestment problem.

A sponsor quoting only IRR on a short hold, or only multiple on a long one, is choosing the flattering metric. Ask for both.

What counts as a good IRR

Same logic as a good cap rate — it is a spread over the risk-free rate, adjusted for what can go wrong.

Rough ranges for stabilized residential, when the 10-year Treasury is in the 4% area:

Higher targets are not better. They are the market’s price for execution risk, and the projections that produce them contain more assumptions that can break.

Treat any projection above 20% on a stabilized asset as a signal to examine the exit cap and the rent growth assumption before anything else. That is nearly always where the number came from.

Calculating it

IRR cannot be solved algebraically; it is found by iteration. In practice:

Excel or Google Sheets: lay cash flows in a column with the initial equity as a negative in period 0, then =IRR(range). For irregular timing use =XIRR(values, dates), which is more accurate for real deals since closings and sales rarely fall neatly on year boundaries.

Deal analysis software: most tools compute IRR automatically once you enter hold period and exit assumptions. The thing to verify is whether the tool lets you set the exit cap rate independently, or whether it silently assumes you sell at the same cap rate you bought at. Tools that do the latter systematically flatter every projection, and it is a surprisingly common default. We flagged which tools handle this properly in best real estate deal analysis software.

Whichever you use, run the exit cap sensitivity. One line of ±50 bp around your base case tells you more about the deal’s risk than the base case IRR itself.

FAQ

What is the difference between IRR and cash-on-cash return? Cash-on-cash is a single year and ignores the sale. IRR covers the entire hold including sale proceeds and accounts for when each dollar arrives.

Can IRR be negative? Yes — when total cash returned is less than invested. Some cash flow patterns with multiple sign changes can also produce more than one mathematically valid IRR, which is one reason net present value is preferred for certain structured deals.

Does IRR include appreciation? Yes, through the sale proceeds. It is embedded in your exit assumption rather than stated separately, which is precisely why that assumption deserves scrutiny.

Is a 20% IRR good? On a stabilized rental, a projected 20% IRR is aggressive and usually depends on optimistic exit or rent growth assumptions. On a genuine value-add or development deal it is a normal target — because those deals can also lose money.