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  3. How-To Guide: Use ChatGPT to Speed Up Complex Income Analysis
1
of 4— Use ChatGPT to clarify your analysis method before you start

What you'll accomplish

By the end of this guide, you'll have a system for using ChatGPT to accelerate complex income analysis — structuring your analysis plan, double-checking your methodology, summarizing findings for the file, and drafting clear explanations for LOs and borrowers. This guide focuses on what AI can help with while keeping you in control of the actual calculation.

What you'll need

  • ChatGPT account at {{tool:ChatGPT.url}} (free tier works; {{tool:ChatGPT.plan}} recommended for Custom Instructions)
  • Income documentation for the file you're working on (you'll extract numbers manually)
  • IMPORTANT: Never paste actual borrower PII (name, SSN, DOB) into ChatGPT — work with anonymized figures only
  • Cost: Free

How-To Guide: Use ChatGPT to Speed Up Complex Income Analysis

Step 1: Use ChatGPT to clarify your analysis method before you start

Before diving into a complex income type, confirm your methodology with ChatGPT:

  1. Open {{tool:ChatGPT.url}} and start a new conversation
  2. Ask your methodology question:
Copy and paste this
I'm underwriting a conventional loan for a borrower who is a 40% owner of an S-corp. They receive both W-2 wages from the business and show K-1 income. What is the Fannie Mae method for calculating qualifying income? Which forms do I need, what add-backs are allowed, and how do I handle income that's declining year-over-year?
  1. Read the methodology explanation before starting your analysis
  2. Ask follow-up questions: "What if the S-corp has a loss in Year 2 but income in Year 1?"

What you get: A clear walkthrough of the methodology before you start — so you calculate correctly the first time, rather than discovering an error after 2 hours of work.

Tools:ChatGPT