Cash flow, explained like you're 12

If a property collects $10 and owes $8, cash flow is $2.

You understood the idea before algebra. Real estate added a forty-page deck so somebody could argue that the roof does not count.

Cash flow is the money left after money comes in and the property pays the bills that actually apply. It matters because leftover cash can be distributed, saved, or used for the next problem. No leftover cash means the owner has to reach into another pocket.

Count the money that made it home

A lease may say tenants owe $10,000 this month. That is scheduled rent. If $9,400 reaches the bank because one unit is empty and another tenant has not paid, actual collected rent is $9,400.

The mortgage does not accept scheduled rent. Neither does the plumber.

Start with the rent roll, then compare it with the collection report or bank deposits and the operating statement. A model that uses full rent, no vacancy, and no concessions is showing the grocery list before anything reached the checkout belt.

Subtract every recurring bite

Operating expenses can include property taxes, insurance, repairs, maintenance, utilities, payroll, management fees, legal and accounting costs, marketing, landscaping, and pest control.

After those expenses, you have net operating income, usually shortened to NOI. NOI is before the loan payment and some owner-level costs. It is an important number. It is not automatically the cash an owner can take home.

Owner cash flow usually comes after debt service, reserve deposits, major capital needs, and any rules in the deal documents. When someone says “cash flow,” ask where in that subtraction they stopped. That one question can recover several missing bills.

Do the refrigerator-door math

Here is one month:

• Rent actually collected: $10,000
• Operating expenses: $4,000
• Debt payment: $3,500
• Reserve set-aside: $800
• Cash flow before taxes and owner decisions: $1,700

Now an air conditioner dies and costs $6,800. That repair equals four months of the $1,700 cash flow.

The property did not break arithmetic. It exposed arithmetic that was left out.

Find the bills under the placemat

The easiest way to dress up cash flow is to exclude reserves. The next easiest is to count future rent as though it already cleared the bank. Another favorite is removing the management fee because the owner plans to do the work.

Self-management may save a check to a property manager. It does not erase the calls, leasing, collections, bookkeeping, vendor coordination, or weekends. If the property works only when your labor costs $0, write “my labor: $0” on the page and see how proud the deal looks.

Also separate repairs from capital work. A small service call and a full roof replacement do not hit on the same schedule, but both are paid with real dollars.

Let the paper settle the argument

For an existing property, pull the documents that show what came in and what went out:

• rent roll and lease records
• trailing 12-month operating statement
• bank statements or collection report
• loan statement and debt-payment schedule
• property tax bill and insurance quote
• repair history and reserve budget

Put historical results in one column and projections in another. Do not let next year’s hoped-for rent sneak into last year’s bank account.

Then ask: What expenses are excluded? What happens if collections fall 5%? Which bill rose fastest last year? Who decides whether cash is paid out or held in reserve?

Your next step is one subtraction. Take actual collected rent for a month, subtract operating expenses, debt, and the reserve deposit, and compare your answer with the advertised cash-flow number. If they differ, the difference needs a name before it gets your money.