Cash-on-cash return answers the most personal question in real estate investing: for every dollar of my own money in this deal, how many cents does it pay me back each year? Unlike cap rate, which describes the property, cash-on-cash (CoC) describes your outcome — down payment, financing, and all.
It is also the number that turns "is this a good deal?" into a concrete negotiating position, because you can run it backward to find the exact price that makes a property work for you.
The Formula
Cash-on-cash return = annual pre-tax cash flow ÷ total cash invested
Annual pre-tax cash flow is what's left after everything: rent minus vacancy, operating expenses, and twelve months of mortgage payments. Total cash invested is every dollar you put in — down payment, closing costs, upfront repairs, and any reserves you funded at purchase.
Example: you buy a rental with $55,000 down, $6,000 in closing costs, and $9,000 in initial repairs — $70,000 of cash in. After all expenses and the mortgage, the property clears $475 a month, or $5,700 a year. Your cash-on-cash return is $5,700 ÷ $70,000 ≈ 8.1%.
Note what CoC ignores: appreciation, loan paydown, and tax benefits. Those are real sources of return, but CoC deliberately measures only the cash the deal puts in your pocket this year. That makes it a conservative, hard-to-fudge yardstick.
Setting a Target CoC
Before you shop, decide what return your cash needs to earn to make a deal worth the work and risk. Investors set this differently — some benchmark against what their money could earn elsewhere, others add a premium for the effort of owning property. Whatever your number, the discipline matters more than the exact figure: a target CoC turns you from someone reacting to asking prices into someone who knows their walk-away point.
The target does the most good when you apply it before making an offer, because price is the one variable you can still negotiate.
Working Backward to a Max Offer
Here is the powerful part. For any given property, the rent is what it is, expenses are what they are, and your financing terms are whatever you can get. Hold those constant, and cash-on-cash return becomes a function of one thing: the price you pay.
That means you can invert the calculation. Instead of asking "what's my return at the asking price?", ask "what's the highest price at which this property still hits my target return?" That price is your max offer.
Sketching the logic: a higher price raises both your down payment (more cash in) and your loan size (bigger payment, less cash flow). Both effects push CoC down. Somewhere on that curve is the price where CoC equals your target — pay less and you beat your goal; pay more and you've knowingly accepted a weaker return.
Doing this by hand means iterating: guess a price, compute the down payment, payment, and cash flow, check the CoC, adjust, repeat. The free Shouldirefi Deal Analyzer automates the loop — enter the rent, expenses, and financing assumptions plus your target return, and it estimates the maximum price that hits your number.
Using Max Offer in Practice
Walking into a negotiation with a max offer changes your posture. The asking price becomes just a data point. If your target-based max offer is $242,000 and the seller wants $265,000, you can offer with confidence, negotiate without emotion, and walk away without regret — the numbers already told you where the deal stops working.
Two cautions. First, your max offer is only as good as your inputs: optimistic rent or skinny expense estimates produce a max offer that's too high. Second, recheck the math when anything changes — financing terms move, an inspection reveals repairs, or the rent estimate firms up. The target stays fixed; the max offer moves with reality.
All figures are estimates for informational purposes only — not financial advice. Consult a qualified professional before making financial decisions.