NOI vs Cash Flow: The Difference Operators Never Explain

Net operating income and cash flow are different numbers. Operators talk about them like they are interchangeable. They are not.

The gap between them is where deals quietly underdeliver against pro forma. Here is what you need to know.

Net Operating Income Defined

NOI is income minus operating expenses. That is it. No debt service. No capital expenditures. No depreciation. No taxes on income.

It is a property-level operating metric. It tells you how the building performs as a business before any of the financing or capital decisions get layered on top.

NOI is the number that gets capitalized to determine asset value. A property generating 200 thousand of NOI at a 6 cap is worth 3.33 million dollars. That is why every operator wants to grow NOI.

Cash Flow Defined

Cash flow is what is left for investors after everything is paid. Operating expenses, debt service, capex reserves, and any other obligations all come out before investors see a dollar.

On the same 200 thousand NOI building, if debt service is 110 thousand and capex reserves are 15 thousand, cash flow is 75 thousand. Distributable to LPs and GPs based on the waterfall.

That is a 22.5 percent gap between NOI and cash flow. Common in any leveraged real estate deal.

Why the Gap Matters to LPs

If you only look at NOI, you miss the cash flow story. A deal can have growing NOI and falling cash flow if debt service increases or capex needs balloon.

Floating rate debt is a perfect example. Rates move up, debt service moves up, cash flow drops even if NOI is flat. The asset value might be unchanged or even improved. But your distribution check shrinks.

LPs should always look at cash flow on cash invested. That is what hits your account. NOI is the operator's metric. Cash flow is yours.

Capex Reserves Are Real Money

Most sponsors fund capex reserves before distributing to investors. This is correct. The asset has to be maintained.

A building should generally hold 250 to 400 dollars per unit per year in capex reserves, depending on age and condition. On a 30 unit building, that is 7,500 to 12 thousand dollars a year just to fund the reserve.

That money comes out of cash flow. If the sponsor is underfunding reserves to boost current distributions, you are getting paid your own future capex.

Debt Service Coverage and Cash Flow

DSCR is NOI divided by debt service. Lenders care about DSCR. LPs should care about it too because it determines how much cushion exists in the deal.

A 1.25 DSCR means there is 25 cents of NOI for every dollar of debt service. If NOI drops 20 percent, the deal is barely covering debt and cash flow is essentially zero.

Underwriting that assumes a 1.25 DSCR for the life of the deal is fine. Underwriting that requires a 1.5 plus DSCR to hit pro forma cash flow is fragile. Read the underwriting carefully.

The Honest Number

When evaluating a deal, ask the sponsor for cash on cash by year for the entire hold period. Not just year one. Not just the average. Each year.

Year one cash on cash is often higher than year two because of interest-only periods on the loan. Year five cash on cash is often higher because rent growth has compounded. The shape of the cash flow curve matters.

If a sponsor only shows you average cash on cash, ask why. Sometimes the answer is benign. Sometimes there is a year in the middle where cash flow is essentially zero and they did not want to highlight it.