The Owner's Crystal Ball: See Cash Trouble 13 Weeks Out

Every contractor has lived some version of this week: the P&L says you're profitable, the pipeline is full, the crews are busy — and you're refreshing the bank balance on Thursday night wondering if Friday's payroll clears.

That's not a profit problem. It's a visibility problem. And it has a fix that every private-equity-owned company in America runs as a matter of policy: the 13-week cash flow.

What it is

A 13-week cash flow is a simple, rolling forecast of every dollar coming in and going out of your bank account, week by week, for the next 13 weeks. Not accrual accounting. Not percent-complete revenue. Cash — checks, ACH, credit card deposits, payroll runs, insurance premiums, truck payments, tax deposits.

Each week, you drop in what actually happened, push the window forward a week, and compare what you predicted against what hit the account. Within a month or two, your assumptions get sharp. Within a quarter, so do you.

Why 13 weeks?

Because a quarter is exactly the distance where cash problems are still cheap to fix.

• Shorter than 13 weeks, and you only see problems when they're expensive: it's hard to open a line of credit, collect an aging receivable, or reschedule a big material buy in two weeks.
• Longer than 13 weeks, and it's a guess. Job schedules move, weather happens, customers pay late. Precision past a quarter is false comfort.

Thirteen weeks is the sweet spot: far enough out to act, close enough in to be accurate.

Why it matters more in the trades

A trades business is a machine that converts labor and material into receivables — and receivables into cash, eventually. Every part of your model works against cash:

• You pay crews weekly and suppliers in 30 days, but collect in 45, 60, sometimes 90.
• Growth makes it worse, not better. Every new job front-loads labor and material before a dollar comes back. Winning three big jobs in the same month can be the most dangerous thing that happens to you all year.
• Seasonality stacks on top: your best revenue quarter and your thinnest cash quarter are often the same quarter.

The 13-week cash flow makes all of that visible while it's still a plan, not an emergency. In our founder's operating years, this one tool repeatedly surfaced cash crunches months before they hit — which meant they never actually hit. The line got opened, the collections push happened, the big buy got scheduled — early, calm, and cheap.

How to know if yours is telling the truth

Plenty of owners have a spreadsheet called "cash flow." Here's the test:

1. It's weekly, not monthly. Payroll is weekly. Monthly cash forecasts hide the exact week that hurts you.
2. It starts from the bank, not the P&L. If it doesn't reconcile to your actual bank balance every week, it's fiction.
3. It gets updated every week — actuals vs. what you forecast. The gap between the two is where you learn. A forecast that never gets scored never gets better.
4. Someone owns it. Not "the bookkeeper when she has time." A named person, every Monday.

Profit is an opinion. Cash is a fact. The 13-week cash flow is how you deal in facts.

What to do with what it shows you

The forecast isn't the point — the action is. When the week-9 number goes negative, you have nine weeks of options: pull collections forward, stage the material purchase, push a discretionary spend, draw the line early instead of at the last minute. When it shows a surplus, you can finally answer "can we afford the new truck?" with a date instead of a feeling.

That's the difference between running your business on your numbers and being run by them.

Want to see your own 13 weeks? It's the first thing we build in every engagement — usually live within the first two or three weeks. Here's how the full system works.