5 AI Prompts Every Founder Should Run Against Their Financial Model

Most founders have a financial model. Fewer have ever actually interrogated it. The model sits in a folder, gets updated before board meetings, and otherwise goes untouched until something breaks.

That's a waste of the cheapest analyst you have access to. Paste the right numbers into any AI assistant with the right prompt, and you get a second opinion on your own model in under five minutes, for free.

Here are five prompts worth running today.

Why the prompt matters more than the model

Handing an AI assistant your spreadsheet and asking "does this look okay?" gets you a shallow answer. Ask it a specific, adversarial question, and it starts finding the things you'd rather it didn't.

The prompts below are ordered from most defensive to most diagnostic. Run all five before you show the model to anyone else, including yourself, next quarter.

Prompt one: the runway pressure test

Prompt: "Here's my monthly burn and cash balance for the last six months: [paste data]. Model out three scenarios: if burn stays flat, if it grows 10% a month, and if I cut costs by 15% starting next month. What's my runway in each case?"

Most founders know their current runway. Fewer have actually modeled how fast that number moves under normal, not catastrophic, conditions. This prompt turns a single static figure into a range you can actually plan around.

Prompt two: the break-even sensitivity check

Prompt: "My fixed costs are $X per month and my gross margin is Y%. What revenue do I need to hit break-even, and how does that number change if my margin drops by 5 points?"

Break-even isn't one number, it's a moving target that depends on assumptions you might not be tracking closely. This prompt exposes how fragile your break-even point actually is to a margin swing you could hit without noticing.

Prompt three: the assumption sanity check

Prompt: "Here are the key assumptions in my model: [list them, e.g. churn rate, CAC, sales cycle length]. Which of these are you most skeptical of for a [your industry] company at [your stage], and why?"

Every model has a few assumptions doing more work than the founder realizes. This is the one prompt on this list built specifically to argue with you, not confirm what you already believe.

Prompt four: the cash flow risk scan

Prompt: "Here's my projected cash inflows and outflows for the next six months: [paste data]. Are there any months where I'm at risk of a cash shortfall, even briefly, and what would need to be true to avoid it?"

Annual and quarterly views hide monthly cash crunches. A business can be profitable on paper and still run out of cash in a specific bad month if a customer pays late or a big expense lands wrong. This prompt catches the timing problem, not just the totals problem.

Prompt five: the investor readiness gap check

Prompt: "I'm preparing to raise a pre-seed round. Here's a summary of my financial model: [paste summary]. What questions would a skeptical investor ask about these numbers that I haven't already answered?"

If you've read our investor readiness checklist, this prompt is the practical follow-up: run your actual model through the same scrutiny before someone else does it for you, in a meeting, with money on the table.

A quick reality check on doing this

None of these prompts require a paid tool. Any AI assistant will work, provided you give it real numbers and a specific question, not a vague one. The answers you get back are only as good as what you feed in, so round or anonymize figures you're not comfortable pasting into a chat window, and don't treat the output as gospel. It's a second opinion, not a verdict.

Where this breaks down

AI is good at finding inconsistencies and asking pointed questions. It's bad at knowing your market, your customers, or the specific reason last month's numbers looked weird. Treat every answer as a prompt for your own judgment, not a replacement for it.

This is exactly the gap NumberIQ's AI Prompt Pack is built to close: a curated set of prompts like these, mapped to the actual tabs in your model, included free with NumberIQ Pro and Founder Starter. Take a look: https://www.numberiq.ai/pricing

FAQ

Do I need a paid AI tool to run these prompts?

No. Any general-purpose AI assistant works, as long as you give it real figures and a specific question. The prompt quality matters more than which tool you use.

Is it safe to paste my financial data into an AI chat?

Depends on the tool's data policy and whether you're on a free or paid tier. If you're cautious, round your figures or strip identifying details like company name before pasting.

How often should I run these prompts against my model?

Monthly at minimum, and before any investor conversation or board meeting. Assumptions drift as your business changes, and a prompt that gave you comfort three months ago might surface a different answer today.

What's the difference between this and NumberIQ's AI Prompt Pack?

These five are a starting point anyone can use for free. The AI Prompt Pack, included with NumberIQ Pro and Founder Starter, maps a full set of prompts directly to your model's tabs so you're not guessing what to paste in.