Three Cash Flow Models: Why Some Owners Use Other People's Money While Yours Sits in the Warehouse

Three Cash Flow Models: Who Fronts the Money Decides Whether Your Cash Gets Trapped

Every business has a time gap between paying out and collecting in—and whoever funds that gap defines three ways to play. The three cash flow models: the traditional model fronts your own money and traps it in inventory; the payables model runs on your supplier’s money; the prepayment model collects the customer’s money first—other people’s money doing the work. Same profit, completely different bank account.

You may know this picture: Ahmad’s car dealership does close to RM20M a year, with RM600K of showroom inventory that looks like success—and a 1 AM Maybank2u balance of RM3,800, a supplier’s final payment due next week, payroll at month-end, rent five days late. Ahmad isn’t unprofitable; he’s strangled by his cash flow model. Let’s take the three models apart.

The Belief That Quietly Kills Owners: “You Have to Buy Stock Before You Can Sell”

We were all taught the same business logic: pay for inventory first → sell it → collect the money. Sounds like common sense, doesn’t it?

That “common sense” is exactly the trap. It assumes one thing—your money has to leave first, and stay gone for a long time, before it gets a chance to come back. From the moment you pay your supplier to the moment your customer pays you, your cash is locked up. However long it’s locked, that’s how long you have to fund it yourself.

This isn’t a failure of effort or ability on Ahmad’s part. It’s the business model itself, designed so the owner fronts the money. Blame the structure, not the operator—same cars, but one owner’s cash is frozen for five months and another’s is never tied up at all. The difference isn’t the person. It’s the structure.

Owners who understand the structure ask a different question: can this deal be done without my money? Often the answer is yes. It comes down to which of three cash flow models you’re running.

Three Cash Flow Models: Whose Money Is Working for You?

Every business has a time gap between paying out and collecting in. Who funds that gap decides which model you’re in.

Model 1: Traditional — Your Own Money, Trapped in Inventory

This is Ahmad. Put up your own cash (or the bank’s) to buy stock, let it sit in the warehouse, and only collect once it sells.

Here’s how the cash flow math works:

Cash Gap = Inventory Days + Receivable Days − Payable Days

Ahmad's dealership:
Inventory turnover = 150 days (avg 5 months to sell a car)
Receivable days    = 0 days   (most buyers pay on the spot)
Payable days       = 30 days  (supplier gives one month's credit)

Cash Gap = 150 + 0 − 30 = 120 days

Meaning: for every car, Ahmad's money is locked for 120 days
before it cycles back. RM600K of inventory = RM600K of cash,
frozen for roughly 4 months.

The money isn’t gone—it’s stuck. The bigger the business grows, the more cash gets stuck. That’s why Ahmad is profitable on paper but scraping the bottom of his account: his growth is being fed by his own cash.

Model 2: Payables-Funded — Use the Supplier’s Money

Same cars, different negotiation. Ahmad goes back to his supplier: “Leave the stock with me, I settle as each car sells, and give me 90 days’ terms.”

Same dealership, payable days negotiated from 30 to 90:

Cash Gap = 150 + 0 − 90 = 60 days

From 120 days down to 60—the gap is cut in half.
You used to front RM600K. Now you front about half: RM300K.
The RM300K freed up covers payroll, rent, and a few more
fast-moving cars.

You didn’t earn one ringgit more in profit. But you freed up half the cash you had to put up. That freed cash is your supplier working for you.

Side note: to work out how many days your own cash gap runs—and which model to shift toward first—start with the free AI profit diagnosis — a real consultant, 30-45 minutes, no hard selling.

Model 3: Prepayment — Use the Customer’s Money, the Gold Standard

The highest-level play: the customer pays first, you deliver later.

A dealership can do this with an order-based model—a customer picks a car, puts down a 30% deposit, and only then do you source it. Gyms, renovation firms, custom furniture, annual software subscriptions, education programs—they’re all masters of the prepayment model. The customer’s money lands in your account first; then you arrange the cost.

Say Ahmad switches to an "order-and-source" model:
Customer orders, pays 30% deposit = RM15,000 (on a RM50K car)
You use that deposit + 90-day supplier terms to source the car
Car arrives, customer pays the RM35,000 balance,
then you settle the supplier

Cash Gap = negative

Meaning: before you've paid the supplier, the customer's money
is already in your account. You're running the customer's deal
with the customer's money.

The prepayment model’s cash gap is negative—the customer’s money arrives before your cost does. In this model you not only avoid fronting cash, the deposits become free working capital you can recycle into operations and expansion. That’s why some owners run businesses worth tens of millions and never run dry: they’re not using their own money.

The Core Principle: Make Money Using Other People’s Money

Line up all three models and one thread runs through them—the operators who win are always finding ways to use other people’s money. There are three sources of “other people’s money” you can pull on:

This is leverage—in plain terms, making money with money that isn’t yours. It’s not a licence to pile on debt. It’s a prompt to see clearly: that time gap in your business—why does it have to be filled with your own cash?

Three Things an Owner Can Do This Week

No need to wait for a big meeting or hire a consultant—you can start these three this week:

1. Calculate your current cash gap. Pull your inventory days, receivable days, and payable days, and run the formula above. First, know how many days—and how many ringgit—of your money are locked up right now.
2. Pick one supplier and renegotiate terms. Start with your biggest one. Move from 30 days to 60 and you instantly free up a month’s worth of fronted cash. It’s just a conversation—worst case, they say no.
3. Find one place to take a deposit. Is there any part of your business where the customer can pay something up front? A deposit, a prepaid package, an annual fee, a membership—even if only some customers pay early, your cash flow model starts shifting toward the gold standard.

Building all three models systematically into your company—turning a “front the money” business into an “other people’s money” business—is exactly what we walk owners through hands-on in our working capital optimization service and the Budget Management (3+1)-Day Program.

FAQ

Which of the three cash flow models is best?

The prepayment model (using the customer’s money) has the healthiest cash position, because the customer’s money arrives before your cost does, making your cash gap negative—you’re running the business on other people’s money. But not every business can move straight to prepayment. The practical path is: first use the payables model (longer supplier terms) to shrink the cash gap, while finding openings for prepayment (deposits, prepaid packages, annual fees), and progressively shift the business from “fronting cash” to “using other people’s money.”

How do you calculate the cash gap?

Cash Gap = Inventory Days + Receivable Days − Payable Days. Inventory days is the average time from buying stock to selling it; receivable days is how long customers owe you before paying; payable days is how long you owe suppliers before paying them. The result is how many days you have to front your own money on each transaction. The longer the gap, the more cash is locked up; when it turns negative, you’re running the business on other people’s money.

Isn’t it risky to use customer and supplier money?

Using other people’s money isn’t risky in itself—the risk comes from using it without doing the math. Stretching supplier terms and collecting customer deposits is healthy and mutually beneficial as long as it’s built on transparent decision accounts and kept promises: suppliers want stable long-term orders, and customers paying deposits get priority or a better price in return. What’s genuinely dangerous is the traditional model, where the owner unknowingly funds inventory with personal savings and high-interest loans, tying personal finances to the company’s cash flow.

Stop Feeding Your Own Money Into a Business Others Would Gladly Fund

Ahmad didn’t sell his cars cheaper and didn’t shrink his business. He simply switched his cash flow model from “my own money” to “my supplier’s and my customer’s money,” and his account immediately breathed easier. If you’re also staring at your balance at 1 AM, the problem usually isn’t that you earn too little—it’s that the business is running on the wrong cash flow model. And the model can be changed.

To find out which model your business is stuck in and how to shift it toward using other people’s money, book a strategy call with us, or sign up for the Budget Management (3+1)-Day Program and we’ll run the numbers on your own figures.

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