Tracking vendor invoices manually across disparate spreadsheets leads to missed payments, damaged supplier relationships, and inaccurate cash flow forecasting. This guide shows you how to use Claude AI to automatically categorize your open invoices into standard 30-day aging buckets. By having Claude generate the required date math and PivotTable structure, you can transform a raw AP subledger into a dynamic aging dashboard.
The Final Aging Dashboard
By the end of this process, you will have a summarized view of exactly who you owe and how far past due those invoices are, structured like this:
Preparing Your AP Data
Before prompting Claude, extract your open payables from your accounting system (like QuickBooks, Xero, or NetSuite). The key is to ensure every row represents a single invoice and includes a definitive "Due Date."
Consistent data is crucial when using AI for Excel. If your Due Dates are sometimes text or missing entirely, the aging formula will fail. Clean the dataset first, ensuring all dates are formatted correctly.
Why this matters for Cash Flow
Understanding precisely when cash needs to leave the business prevents liquidity crises. Keeping this aging report updated is the first step toward building a reliable forecast, which you can explore further in our course on how to automate a cash flow dashboard.
The Exact Claude Prompt
Copy this prompt directly into Claude. It provides the strict guardrails necessary to ensure Claude writes a functional, error-free formula utilizing the TODAY() function, preventing hallucinations.
Frequently Asked Questions
Can Claude handle my company's specific net payment terms?
Yes. You can instruct Claude to adjust the calculation logic based on specific payment terms (e.g., Net 30, Net 60) if you include that column in your data prompt.
Should I use IF formulas or a PivotTable for the aging report?
You need both. Claude will generate the IF or IFS formulas to assign each invoice to an aging bucket at the row level, and then guide you on summarizing those buckets using a PivotTable.
How do I keep the AP aging buckets updating automatically?
Claude will utilize the TODAY() function in the Excel formulas. This ensures that every time you open the workbook, the invoice aging recalculates dynamically based on the current date.