Built for people who live in financial models.
Formula Audit XL is an Excel formula auditing add-in. It does one job: help you understand, navigate, and verify a complex Excel model faster than you could with native Excel tooling alone.
The product came from a recurring frustration. Financial modellers in FP&A, investment banking, private equity, audit, and consulting spend a large share of their time on one class of problem: working out what a model actually does. Which cells feed which formulas. Whether the formula in column H row 40 is consistent with the rest of the row. Whether that external link still resolves. Whether a new version introduced a regression.
Excel's built-in auditing tools have existed for decades. They are not bad; they are simply not designed for the scale and structure of a real financial model. Formula Audit XL is.
Who Formula Audit XL is for
The product is aimed at anyone who builds or reviews complex multi-sheet Excel models as part of their work. In practice that means:
- FP&A analysts and managers Monthly close, reforecasting, board reporting.
- Investment banking analysts LBO, DCF, merger models under deadline pressure.
- Private equity associates Due-diligence model review on third-party workbooks.
- Big-4 audit and advisory teams Reviewing client models as part of audit or transaction work.
- Corporate finance teams Capital allocation, business case, and infrastructure models.
- Independent consultants Delivering models you can stand behind to a paying client.
How we approach the product
Finance-native
Built by people who have spent years inside financial models. We know the difference between a clean three-statement model and a spaghetti workbook no one dares touch.
Audit-first
Every feature exists to answer one question: "is this model correct?" Trace, map, compare, check. Each one directly reduces the risk of a broken formula reaching a board deck.
Local-only
No data leaves your machine. The add-in runs inside Excel on your machine. We do not receive, store, or process your model contents. The free web tools run in your browser with no upload to our servers.
The free tier and free tools
We publish a set of free web tools (an Excel circular-reference finder, an external-link scanner, and a hardcode detector) alongside a free add-in tier with limited functionality. The free tier does real, useful work. It exists because the fastest way to earn trust in this market is to demonstrate value before asking for money.
The paid plans add the features that matter when model accuracy is the job: the full Explore Precedents & Dependents tree, the one-click Model Check health report, Cell Map, and the inconsistent-formula and named-range audits.
Compatibility
For Microsoft Excel on Windows: 2016, 2019, 2021 & 365. The add-in installs via the standard Office add-in mechanism and appears in the Excel ribbon. No VBA, no macros, no external dependencies. System requirements are on the download page.
Questions? We are reachable.
Contact us directly or browse the help docs.
For Microsoft Excel on Windows: 2016, 2019, 2021 & 365 · No data leaves your machine