People Use AI
Finance

Debugging Excel financial model formulas with AI

Use AI assistance inside spreadsheets to quickly identify and fix formula issues (e.g., circular references) in debt schedules and other model components to restore trust in outputs like NPV and IRR.

Why the human is still essential here

A finance professional must validate the model logic, interpret the business implications, and sign off on outputs for stakeholders (e.g., board review); AI accelerates troubleshooting but doesn’t own the financial judgment.

How people use this

Circular reference root-cause trace

AI scans the workbook’s calculation chain to pinpoint the exact cells creating a circular reference in a debt schedule and suggests a corrected linking approach.

Microsoft Excel Copilot

Formula explanation and safer rewrite

AI explains a complex nested formula driving NPV/IRR and rewrites it using clearer constructs (e.g., LET/XLOOKUP) to reduce brittleness and range errors.

ChatGPT

Range consistency and broken-link detection

AI reviews exported formulas to flag inconsistent ranges, accidental hardcodes, and broken external links that can distort outputs before a board meeting.

Claude

Community stories (1)

X

I watched a $3.5M acquisition almost fall apart during a board review.

I watched a $3.5M acquisition almost fall apart during a board review.

Not because the strategy was wrong.
Not because the market changed.

Because of a single circular reference error in the debt schedule.

One hashtag#REF! error appeared. Then another.

Suddenly, the NPV didn't make sense. The IRR was jumping. The Board lost confidence in 10 minutes.

I spent 14 hours that weekend rebuilding the entire model from scratch. At that point, I had been in finance for 15 years.

And there I was, tracing cell dependencies like an intern at 2 AM.

That’s when it hit me: the manual way is a massive risk.

We accept "messy data" and "manual linking" as normal. It isn't. It’s a liability.

Today, that same error takes me 60 seconds to fix.

I use AI to debug formulas, clean messy imports, and review models.

I don't need to be a Excel advanced. I just need to know how to direct the AI agent inside my sheet.

What took 14 hours now takes 14 minutes.

You can either keep grinding manually, or you can learn the new way to work. Ready to level up? Join our Corporate Finance Hub® and master AI in finance. Stop fixing formulas. Start making decisions.

Join here:

https://t.co/SU0kSRB1i5

Also, do not forget to join my Webinar : AI in Action: 10 Real Use Cases for FP&A:

luma.com/xjj56tuc

BR
Bojan RadojicicCEO at Finance & Tax Advisory Firm
Mar 6, 2026