Internal Rate of Return (IRR)
Internal Rate of Return (IRR)
IRR is the annualized return on your real estate investment accounting for cash flow in each year plus the sale proceeds at exit. It's the standard metric professionals use to compare deals because it accounts for timing, compounding, and the full investment lifecycle.
Key takeaways
- IRR is the discount rate that makes NPV (net present value) of all cash flows equal zero. It's measured in percentage terms and tells you the annualized return.
- Cash-on-cash measures year-one return only. IRR measures return over the full hold period (5, 10, 20 years), accounting for rent growth, debt paydown, and sale proceeds.
- A property with 8% cash-on-cash might have 12% IRR if rents grow and you sell at a gain. Or 5% IRR if the market softens.
- IRR is sensitive to hold period, exit price, and rent growth assumptions. Small changes in any assumption dramatically shift IRR. This makes IRR both powerful and dangerous.
- Institutional investors target 15–20%+ IRR. Individual investors often accept 8–12% IRR. If your IRR is below 6%, you're better off in REITs or bonds.
Why IRR matters
Cash-on-cash is a snapshot: your return in year one. But real estate is a long-term game. IRR is the long-term score.
Consider two properties:
Property A: Generates $12,000 cash flow year one ($100k down). Year-one cash-on-cash: 12%. But rents are stagnant. You sell in year 5 at the same price you bought (no appreciation). Total cash received over 5 years: $60,000 (5 × $12,000) plus $100,000 return of capital = $160,000 total. Your IRR is 10%.
Property B: Generates $6,000 cash flow year one (6% cash-on-cash, same $100k down). But rents grow 3%/year. In year 5, you sell at a 20% price gain. Total cash: year 1-5 cash flow plus 20% appreciation gain. Your IRR is 15%.
Cash-on-cash favors Property A (12% vs. 6%). But IRR favors Property B (15% vs. 10%). IRR accounts for the full investment arc, not just year one.
The math (conceptual)
IRR solves for the discount rate where all cash flows, properly discounted, sum to zero:
0 = −Initial Investment + (CF₁/(1+r)¹) + (CF₂/(1+r)²) + ... + (CFₙ + Exit Price)/(1+r)ⁿ
Where r = IRR, and CF = cash flow in each year.
You don't calculate this by hand. A spreadsheet (Excel's IRR function) or a financial calculator solves for r automatically.
A worked example
Property: $400,000 purchase, $80,000 down (20% down), $320,000 financed at 6%, 30 years.
Assumptions:
- Year 1 NOI: $28,000
- Rents grow 2.5%/year
- Debt service: $19,200/year
- Year 1 cash flow: $8,800
- Hold 10 years, sell at same price (no appreciation, conservative)
Year 0: −$80,000 (down payment)
Year 1: +$8,800
Year 2: +$9,020 (rent growth)
Year 3: +$9,245
Year 4: +$9,476
Year 5: +$9,713
Year 6: +$9,955
Year 7: +$10,204
Year 8: +$10,459
Year 9: +$10,720
Year 10: +$10,988 + $113,000 (sale proceeds after payoff)
= +$123,988
(Note: Sale proceeds = sale price minus remaining loan balance. By year 10, the $320,000 loan is mostly paid down.)
Running IRR on these cash flows: IRR = 11.2%
Now assume the property appreciates 2%/year instead (more realistic):
Year 10: +$10,988 + $145,000 (sale price $487,000, less remaining loan)
= +$155,988
New IRR: 13.8%
Same property, same cash flow, but with modest appreciation—IRR jumped 2.6 percentage points. This is why real estate investors obsess over appreciation markets.
IRR's sensitivity to assumptions
IRR is powerful but fragile. Small changes in assumptions swing IRR dramatically:
Base case: $400k property, 2% annual appreciation, 2.5% rent growth, 10-year hold. IRR = 13.8%.
If rent growth is 1% instead: IRR drops to 11.5%. (Negative surprise)
If you hold 15 years instead of 10: IRR rises to 14.2%. (Time compounds value)
If the market softens and property sells at 10% loss: IRR drops to 9.5%. (Appreciation assumed but not realized)
This is why institutional investors stress-test IRR. They calculate:
- Base case IRR (most likely scenario)
- Bull case IRR (best reasonable outcome)
- Bear case IRR (stress scenario, property softens, rents stall)
If even the bear case IRR is acceptable (say, 8%+), the deal is worth the risk.
Comparing IRR across deals
A 15% IRR is universally better than a 10% IRR, all else equal. But IRR comparison requires equal risk assessment:
- A 12% IRR in a stable multifamily property (low risk) is better than a 12% IRR in a speculative development deal (high risk), because you're not compensated for the extra risk.
- A 12% IRR on a 5-year hold (quick exit, less capital lock-up) is better than a 12% IRR on a 15-year hold (capital tied up longer).
Institutional investors often use "IRR-adjusted returns" to account for risk, but the principle is simple: higher IRR is better, but you must account for risk and liquidity.
Typical IRR benchmarks
REITs or index funds: 7–10% annualized returns (historical), including dividends and appreciation.
Individual rental properties (stabilized): 8–12% IRR. Cash flow properties in secondary markets trend toward the higher end (12%+); appreciation-focused properties in primary markets trend lower (8–10%).
Value-add deals (business plan execution): 12–18% IRR if the business plan works. 4–6% if it fails (rents don't improve, you sell at a loss).
Development deals: 15–25%+ IRR if successful. Downside is major (negative IRR, total loss).
Institutional multifamily: 12–16% IRR (targeting). Most traded deals in 2023–2024 were in the 8–12% range due to cap-rate expansion.
If your deal is projecting an IRR much higher than these benchmarks, either you've found a rare opportunity or your assumptions are too optimistic. Stress-test them.
IRR vs. equity multiple
Equity multiple is related but different:
Equity multiple = Total cash returned ÷ Initial investment
A 2x equity multiple means you got $2 back for every $1 invested. Over a 10-year hold, this equals a 7.2% IRR (roughly). Over a 5-year hold, it equals a 14.9% IRR.
Equity multiple is simpler to calculate but doesn't account for timing. IRR is more sophisticated and preferred by professionals.
IRR with financing changes and refinancing
Refinancing complicates IRR. If you refinance in year 5 at a lower rate, you get cash out (reducing your net investment) or reduce future debt service (improving cash flow). This boosts IRR.
Example: Refinance in year 5, pulling out $50,000 in cash (at a lower rate). This $50,000 is a positive cash flow in year 5, improving overall IRR. Refinancing is a strategy to boost returns—but it requires rate declines and is risky if rates go the other direction.
Decision tree for IRR analysis
Next
IRR accounts for all cash flows over time—a complete picture. But it makes heavy assumptions about future rent growth, appreciation, and your ability to exit. Equity multiple and DSCR approach the problem differently: one measures cash returned relative to invested, the other measures your margin for error. Together, these metrics tell a complete story.