Investment Math
Cash-on-Cash Return and What Leverage Does to It
What counts as a satisfactory result depends on the market, the property type and the investor's alternatives. No figure here is presented as a normal or target return, and exam items supply the numbers you need rather than expecting you to recall any.
This measure answers a narrower question than the capitalization rate does. Not what the property earns against its price, but what the investor's own money earned in a year against the amount of that money actually committed.
Because it counts the loan payment as a cost and counts only the cash the investor put up, it is the ratio that changes when financing changes. That behavior is what exam items are usually built around.
Two Figures, Each Assembled Separately
The numerator is one year of pre-tax cash flow. Begin with net operating income, which is collections after vacancy and credit loss less the costs of operating the property, and then subtract the year's debt service: principal and interest together, not interest alone.
Note the ordering. Operating expenses come out before the loan payment does, and the loan payment comes out at this stage and not earlier. Candidates who subtract debt service while computing net operating income end up deducting it twice and arrive at an answer that is too low.
The denominator is everything the investor actually paid out of pocket to acquire the asset and put it into service. That means the down payment, the closing costs the buyer bore, and any initial repair or improvement spending needed before the property could operate as assumed.
Borrowed money is not in the denominator. That is the whole point of the measure: it deliberately excludes the part of the purchase price that someone else funded, because the question being asked is what the investor's own committed dollars produced.
Divide the first figure by the second and express the quotient as a percentage. Both figures are pre-tax, so the result says nothing about the investor's own tax position.
How It Differs From the Capitalization Rate
The two ratios are built from overlapping inputs and answer different questions. Items often place them side by side to see whether you can tell them apart.
Different numerator. Capitalization uses net operating income. This measure uses what is left after the loan is paid, so a property with heavy debt service shows a much smaller top number.
Different denominator. Capitalization divides by the full price or value. This measure divides only by the cash the buyer committed, which is smaller whenever any borrowing is involved.
Different subject. One describes a property; the other describes a position in that property. Two investors buying identical buildings at identical prices compute identical capitalization rates and can compute very different results here.
Different sensitivity. Change the loan terms and this ratio moves while the capitalization rate does not. That is why it is the measure quoted when the question is about the effect of borrowing.
Leverage cuts both ways. When the property earns more per dollar than the borrowing costs per dollar, borrowing raises the result, which is positive leverage. When borrowing costs more than the property earns, the same mechanism drives the result down and can drive cash flow negative.
Neither ratio is a total return. Appreciation, the equity built as the loan balance falls, and tax treatment are all outside both of them.
The Errors That Show Up Most
Nearly every wrong answer on these items comes from one of a short list of missteps.
Putting the whole purchase price in the denominator. If the item mentions a loan at all, the denominator is the cash contribution, not the price. This single substitution produces a plausible-looking wrong answer that is almost always among the choices.
Using interest only as the debt service. Cash flow is reduced by the entire payment the investor makes. Principal reduction is a real cash outlay in the year even though it builds equity rather than disappearing.
Forgetting the costs beyond the down payment. Closing costs and any initial work stated in the item belong in the denominator. Leaving them out inflates the result.
Deducting income tax or depreciation. The measure is pre-tax, and depreciation is not a cash outlay at all. Neither belongs anywhere in the calculation.
Mixing monthly and annual figures. Loan payments are usually quoted monthly and income annually. Put everything on an annual basis first and the rest of the item is straightforward.
These are habits, and habits respond to repetition under time pressure. RE License Prep opens with a free diagnostic, shows through your PassPulse Score whether a corrected habit is holding, and orders the remaining investment-math work in your PassMap™. Full access is $79 one time with a 30-day money-back guarantee.
Two Worked Items
Both items below are written for practice here and are not drawn from any licensing examination. Every figure is illustrative and chosen only to make the arithmetic clean.
Question 1
Illustrative figures: a building produces net operating income of $66,000 for the year, and the annual debt service on the loan is $48,000. The buyer paid $180,000 down, $12,000 in closing costs, and $8,000 for repairs required before the first tenant moved in. What is the cash-on-cash return?
9 percent. Cash flow is $66,000 less $48,000, or $18,000; the cash committed is $180,000 plus $12,000 plus $8,000, or $200,000, and $18,000 divided by $200,000 is 0.09, so the pre-purchase repair spending has to sit in the denominator alongside the down payment and the closing costs.
Question 2
Illustrative figures: an investor will not buy unless the first year returns 10 percent on the cash committed. The property under consideration produces $42,000 of net operating income and carries $30,000 of annual debt service. What is the largest cash contribution that still meets the target?
$120,000. Cash flow is $42,000 less $30,000, or $12,000, and dividing that $12,000 by the 0.10 the investor insists on gives $120,000, which is the arithmetic of the ratio run backwards from the required result to the allowable denominator.
Common Questions on This Calculation
Is appreciation counted?
No. Only the cash that moved during the year is counted. An increase in the property's value produces no cash until a sale or a refinance, so it sits outside this ratio entirely, as does the equity built by paying down principal.
Why do leveraged investors prefer it to the capitalization rate?
Because they are not asking what the building yields on its full price. They are asking what the portion they funded themselves returned, and only a measure that subtracts the loan payment and divides by their own contribution answers that.
Can the result be negative?
Yes. When debt service exceeds net operating income, the year's cash flow is negative and so is the ratio. The investor is funding operations out of pocket, which is a position taken deliberately only when something else, such as an expected repositioning, justifies it.
Does more borrowing always improve the number?
Only while the property earns more per dollar than the debt costs per dollar. Past that point additional borrowing lowers the result, and it also shrinks the cushion between income and the payment, so the measure improves in years that go well and deteriorates faster in years that do not.
Should the reserve for replacements be subtracted?
Follow the item. If a reserve is listed among the operating expenses, it has already reduced net operating income and should not be deducted a second time. If the item does not mention one, do not add one.
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