How to Calculate IRR for Real Estate Investments

What Is IRR in Real Estate?

Internal rate of return (IRR) is the annualized rate of return that makes the net present value of all cash flows from an investment equal to zero. In simpler terms, IRR is the annual percentage return you earn on your invested capital, accounting for both the amount and timing of every cash inflow and outflow over the investment's life. It is the most comprehensive return metric in real estate investing because it captures cash flow distributions, principal paydown, appreciation, and the time value of money.

Why IRR Matters More Than Other Metrics

Cap rate tells you the property's current yield but ignores financing and appreciation. Cash-on-cash measures annual income but doesn't capture total returns or the timing of cash flows. Equity multiple shows total return but ignores when you receive the money. IRR combines all of these into a single, time-weighted metric.

A deal that returns 2.0x equity multiple over 3 years (IRR of approximately 26%) is far superior to one that returns 2.0x over 7 years (IRR of approximately 10%). Same multiple, drastically different returns — and IRR captures this difference.

How IRR Is Calculated

IRR uses the same concept as the time value of money. It finds the discount rate where the present value of all future cash flows equals the initial investment.

The cash flow timeline for a typical multifamily deal:

The IRR is the rate that makes the present value of years 1-5 equal to the $1,500,000 investment. For this example, the IRR is approximately 16.4%.

What Is a Good IRR for Multifamily?

Higher target IRRs correspond to higher risk. A stabilized Class A property with an 8% IRR has predictable cash flows and minimal execution risk. A heavy value-add deal targeting 20% IRR requires successful renovations, rent increases, and a favorable exit market.

Key Variables That Drive IRR

Purchase Price

Every dollar of overpayment at acquisition reduces IRR. Buying at a 6.5% cap rate vs. a 6.0% cap rate on a $5M property saves $384,000 in equity — which significantly boosts IRR if the exit is similar.

Rent Growth

Rent growth compounds over the hold period. A property growing rents at 3% annually vs. 2% over a 5-year hold generates approximately $100,000 more in cumulative cash flow on a 60-unit building — and the higher exit NOI increases sale proceeds by $500,000 or more at a 5.5% exit cap.

Exit Cap Rate

This is the biggest single lever on IRR. Your exit cap rate assumption determines the sale price. A 50 basis point difference in exit cap rate can swing IRR by 3 to 5 percentage points. Conservative underwriters assume exit cap rates 50 to 100 basis points higher than the going-in cap rate.

Hold Period

Shorter hold periods generally produce higher IRRs if the deal appreciates significantly. A value-add deal that reaches stabilization in year 2 and sells in year 3 will likely show a higher IRR than the same deal held for 7 years, because the early-year value creation is spread over fewer years.

Leverage

Higher leverage amplifies returns in both directions. A deal financed at 75% LTV will have a higher IRR than the same deal at 65% LTV — assuming the deal performs as projected. But leverage also amplifies losses if the deal underperforms.

Sensitivity Analysis: How Assumptions Change IRR

Using the 48-unit example above, changing one assumption at a time:

The exit cap rate assumption has the largest impact. Always stress-test your IRR at exit cap rates 50 to 100 basis points above your base case.

Common IRR Mistakes

Ignoring capital expenditure timing. If you plan $500,000 in renovations in year 1, that upfront cash outflow significantly reduces IRR compared to spreading capex over 3 years.

Using unrealistic rent growth. Projecting 4% to 5% annual rent growth when the market averages 2% to 3% inflates IRR by 3 to 5 percentage points. Use market-supported assumptions.

Forgetting closing costs at exit. Disposition costs including broker commissions (1-3%), transfer taxes, and legal fees typically run 2% to 4% of sale price. On a $6M exit, that's $120,000 to $240,000 that reduces proceeds and IRR.

Not modeling refinance scenarios. A cash-out refinance in year 3 returns capital to investors, which can dramatically change IRR. Model both refinance and no-refinance scenarios.