Investors
Cash-on-Cash Return vs. IRR: what is the difference?
By Steve Lockhart
The short answer
Cash on cash is the practical, year-one number: take the annual pre-tax cash flow, which is rent minus every expense and the mortgage payment, and divide it by the cash you actually invested, down payment, closing costs, and any upfront repairs.
Full answer
Cash on cash is the practical, year-one number: take the annual pre-tax cash flow, which is rent minus every expense and the mortgage payment, and divide it by the cash you actually invested, down payment, closing costs, and any upfront repairs. The result is the return on your money in an average early year. It is the measure that keeps an investor honest about how a deal performs with their actual financing in place.
IRR is the return that makes the present value of all future cash flows equal your initial investment. It is a fuller calculation because it accounts for every cash flow across the whole hold period, including the eventual sale, so it captures mortgage paydown and appreciation, not just monthly rent. Because IRR spans years, it is the measure to use when comparing a long-term hold against other long-term uses of the same capital, and it is best run with a spreadsheet or underwriting tool rather than by hand.
Use cash on cash to judge whether a property is worth buying and how it performs with your loan, and use IRR to judge the whole investment over time. They can disagree: heavier leverage can boost cash on cash while financing costs and slower growth drag the IRR down, or a property can show modest cash flow and strong long-term IRR. Run both with honest inputs and compare them against your goals and your alternatives, because one number alone can mislead.
A note from Steve: nothing on this page is investment, legal, or tax advice. Markets move, and every property is different. Run your own numbers on the specific deal, and talk to your CPA and attorney before you commit.
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Frequently asked
Questions investors often follow up on
Which measure should I prioritize?
It depends on your goal. If the property must produce income now, cash on cash matters most, because it measures your annual return on money actually invested. If you are building long-term wealth, IRR matters most, because it includes paydown, appreciation, and the eventual sale. Serious investors evaluate both.
Why would cash on cash and IRR disagree?
They measure different horizons. A high cash on cash often comes with leverage, which can add risk and slow long-term growth, while a low cash-on-cash property can still create wealth through appreciation and paydown over many years. The disagreement is information, not confusion.
Do I need special tools to calculate IRR?
IRR is a present value calculation, so most investors use a spreadsheet, a financial calculator, or underwriting software. The inputs matter more than the tool: realistic rent, vacancy, expenses, financing, a hold period, and an exit price.
The Lockhart Method
The Lockhart Method
Your Home | My Strategy | Proven Results
My strategy: we compute cash on cash for the reality of the first years and IRR across the hold period, with the same conservative inputs for both. The two numbers get compared against your alternatives before you commit, so the decision rests on wealth built over time, not just this year's rent.
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