IRR vs Cash-on-Cash vs Cap Rate
IRR vs Cash-on-Cash vs Cap Rate
Cap rate, cash-on-cash, and IRR each answer different questions. Cap rate asks: what does this real estate earn? Cash-on-cash asks: what do I make in year one on my cash? IRR asks: what's my total return over my full hold period? Professionals use all three.
Key takeaways
- Cap rate (NOI ÷ price) is leverage-independent. Two deals with different financing have the same cap rate if NOI and price are identical. Cap rate normalizes across deals.
- Cash-on-cash (annual cash flow ÷ your equity) is leverage-dependent. More aggressive financing inflates cash-on-cash in year one but creates downside risk.
- IRR (annualized return over full hold period) is forward-looking, accounting for rent growth, appreciation, and the sale exit. It's what you actually made (or lost) annualized.
- A high cap rate doesn't guarantee high IRR. A 6% cap rate property might have 10% IRR if rents grow and it appreciates; or 3% IRR if the market softens.
- A high cash-on-cash doesn't guarantee good long-term returns. Aggressive leverage might create 15% year-one cash-on-cash but negative IRR if the property declines in value.
When each metric is useful
Use cap rate to:
- Compare similar properties across different geographies (normalize for market conditions)
- Assess whether a property is cheap or expensive relative to market
- Understand the underlying real estate quality independent of how you finance it
Use cash-on-cash to:
- Evaluate your year-one cash return given your specific financing
- Compare two deals you can finance differently
- Assess whether cash flow is positive and sustainable early on
Use IRR to:
- Compare deals with different hold periods and exit assumptions
- Account for appreciation and rent growth in your decision
- Evaluate value-add or development deals where cash flow is negative early but strong later
- Benchmark against alternatives (stocks, bonds, other real estate)
Three properties, one story
Property A: $500,000 asset, $50,000 NOI (10% cap rate). Financed 70% ($350,000 debt at 6%, 30 yr).
Debt service: $21,000
Cash flow: $29,000
Cash invested (down + closing): $150,000 + $10,000 = $160,000
Year-one cash-on-cash: 18.1%
10-year hold: Rents grow 2%, property appreciates 2%.
Year 10 NOI: $61,000
Year 10 sale (at $608,900): Debt paid down to $258,000, equity $350,900
Total cash received over 10 years: ~$550,000
IRR: 16.8%
Cap rate tells you it's a solid underlying asset (10%). Cash-on-cash tells you it's a strong year-one play (18.1%). IRR tells you the full story (16.8% annualized over 10 years).
Property B: $500,000 asset, $25,000 NOI (5% cap rate). Financed 90% ($450,000 debt at 6%, 30 yr).
Debt service: $27,000
Cash flow: −$2,000 (negative; you pay)
Cash invested: $50,000 + $10,000 = $60,000
Year-one cash-on-cash: −3.3%
10-year hold: Rents grow 3%, property appreciates 3%.
Year 10 NOI: $34,500
Year 10 sale (at $671,400): Debt paid down to $328,000, equity $343,400
Total cash over 10 years: ~$210,000 (negative years 1-3, positive later)
IRR: 18.4%
Cap rate reveals Property A is a better asset (10% vs. 5%). But cash-on-cash and IRR tell a different story: Property B's aggressive leverage and growth assumptions outperform Property A on a full hold basis (18.4% IRR vs. 16.8%), despite negative year-one cash flow.
Property C: $500,000 asset, $30,000 NOI (6% cap rate). Financed 50% ($250,000 debt at 6%, 30 yr).
Debt service: $15,000
Cash flow: $15,000
Cash invested: $250,000 + $10,000 = $260,000
Year-one cash-on-cash: 5.8%
10-year hold: Rents grow 1%, property appreciates 0%.
Year 10 NOI: $33,000
Year 10 sale (at $500,000): Debt paid down to $169,000, equity $331,000
Total cash over 10 years: ~$280,000
IRR: 6.2%
Cap rate is in the middle (6%). Cash-on-cash is modest (5.8%). IRR is weak (6.2%)—essentially a bond-like return. Property C is conservative but uninspiring.
When each metric lies
Cap rate lies when:
- You're comparing highly leveraged to unleveraged properties (cap rate ignores financing, so you miss the risk difference)
- Market conditions are about to shift (cap rate is a current snapshot; if rates rise or sentiment shifts, cap rates will expand and values fall)
- You're comparing different time periods without adjusting for interest rate changes
Cash-on-cash lies when:
- You're comparing deals with different hold periods (a 5-year hold and a 20-year hold can't be fairly compared on year-one cash-on-cash)
- You're using excessive leverage to artificially inflate year-one returns (the deal might collapse in year 3)
- The property is in decline but looks good year one (negative later years)
IRR lies when:
- Your assumptions are wrong (if you assume 3% rent growth but the market declines, your IRR will be much worse)
- You fail to account for risk (a 20% IRR in a distressed deal is worse than a 12% IRR in a stabilized deal if the distressed deal fails)
- You're comparing a 5-year development timeline to a 30-year hold (timing matters, and high IRR over 5 years might be worth less than moderate IRR over 30 years)
The leverage trap
Aggressive leverage can inflate year-one cash-on-cash while destroying IRR:
Property: $1,000,000, $60,000 NOI (6% cap rate). Market softens, property drops 10% in value.
Conservative financing (50% down, $500k debt):
- Year-one cash-on-cash: 9.6%
- 5-year sale (10% market decline): Property now worth $900,000. Debt paid down to $383,000. Equity: $517,000. Loss: $0 (debt paydown offset the decline)
- 5-year IRR: 6.8%
Aggressive financing (10% down, $900k debt):
- Year-one cash-on-cash: 48% (wow!)
- 5-year sale (10% market decline): Property now worth $900,000. Debt still $695,000. Equity: $205,000. Loss: $95,000 of your original $100,000.
- 5-year IRR: −14% (you lost 14% annualized)
The aggressive financing looked amazing year one (48% cash-on-cash!) but destroyed returns in a down market. This is why smart investors don't chase cash-on-cash alone—they stress-test IRR across scenarios.
Matrix comparison
| Metric | Measures | Independent of Leverage? | Time Frame | Use For |
|---|---|---|---|---|
| Cap Rate | Real estate yield (NOI ÷ price) | Yes | Snapshot, current | Normalizing deals, comparing markets |
| Cash-on-Cash | Year-one return on your equity | No | Year one only | Assessing immediate cash position |
| IRR | Annualized return over full hold | No (depends on exit) | Full hold period | Comparing complete investment scenarios |
How to use all three together
Step 1 (Cap Rate): Is the underlying real estate a good value? Is the cap rate above market average (cheap) or below (expensive)?
Step 2 (Cash-on-Cash): Given your financing, will you have positive cash flow? Can you afford to hold if appreciation stalls?
Step 3 (IRR): Given reasonable rent growth and appreciation assumptions, is the total return acceptable? How does IRR change under stress scenarios (slower rent growth, no appreciation)?
If cap rate is weak (below-market), you're betting on appreciation or rent growth for IRR to work. This is high-risk. If cap rate is strong (above-market), even modest appreciation generates good IRR.
If cash-on-cash is negative, you need confidence in the business plan (value-add) or appreciation (growth market) to justify it.
If IRR is below your hurdle rate (say, 10%), pass unless the deal has special attributes (tax benefits, strategic value, downside protection).
Decision tree
Next
You now have three lenses to evaluate deals: cap rate (the asset), cash-on-cash (year-one pocket), and IRR (total return). But there are more metrics that matter: equity multiple (total cash back), DSCR (margin for error), LTV (leverage risk), and debt-yield (lender's perspective). Together, these form a complete analysis toolkit.