How to use GPT-5 to build a 13-week cash flow forecast in 5 minutes

Impress your CEO and the Board by mastering AI.

Imagine it’s Friday afternoon.

And your CEO texts you:

“Do we have enough cash to cover payroll in six weeks?”

You open 5 different spreadsheets.

1. AR aging

2. AP schedule

3. Payroll calendar

4. Bank statements

5. Capex plan

But each one is messy and out of sync.

So you spend hours stitching them together into a rolling 13-week cash forecast. And by the time it’s done, you’re exhausted.

Yet, you’re not sure if the numbers are right.

Now imagine this instead:

You drop 5 files into GPT-5.

1. Opening Cash Assumptions

2. Cash Outflow

3. Sales

4. Ap Aging

5. Payroll calendar

And within 5 minutes, it gives you a 13-week cash flow forecast.

Scenarios. Risks flagged. Red zones highlighted.

And, most importantly, an explanation you can trust.

Because this time you didn’t let AI hallucinate.

Yes, it’s possible.

In today’s edition I’ll show you how you can build a 13-week cash flow forecast with GPT-5 and turn it into a board-ready website in 5 minutes.

1. I built a 13-week cash flow forecast with GPT-5

2. A board-ready website with 1 prompt

You can see the full site here.

Let’s dive in.

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How to Build a 13-week Cash Flow Forecast with GPT-5

Files to upload:

1. OpeningCash_Assumptions_Simple.xlsx

2. Sales_& Payout last 8 weeks.xlsx

3. AP Aging.xlsx

4. Payroll calendar.xlsx

5. Outflows.xlsx

COPY-PASTE Prompt