You just got the term sheet back from the lender. The rate, the IO period, the amort, the balloon: it’s all there. You want to map it out period by period so you can see exactly how the debt behaves over the hold, how much principal you’re actually paying down, and what the lender’s true yield looks like after fees.
But building that schedule from scratch in Excel takes time. Setting up the IO-to-amortizing transition, handling curtailments, computing lender APR with origination fees and points: it’s fiddly work. Not hard, just slow. And when you’re juggling three deals at once, “I’ll build the amort schedule later” turns into “I never built the amort schedule.”
That’s exactly what this task is built to fix.
What This Task Does
You give it your loan terms. Either paste them as text (loan amount, rate, amort period, term, IO period, curtailments, origination fee, points) or upload a term sheet, commitment letter, or loan agreement and let the AI pull the numbers out.
From there, the Excel Analyst builds you a complete Excel workbook: an inputs section with all nine loan parameters, a full period-by-period amortization schedule with IO and amortizing phases, curtailments, and a balloon payment at maturity. It also calculates borrower metrics (total interest, loan paydown percentage), lender metrics (lender APR inclusive of fees and points), and runs sanity checks to make sure everything ties.
The whole process takes roughly 10 minutes of your time. The AI does the rest.
Who This Task Is For
Anyone in CRE who touches debt, whether you’re sizing it, underwriting it, or managing it post-close, needs an amortization schedule at some point. The question is whether you spend the time building one or let the AI handle the setup so you can focus on the analysis.
This task is built for:
- Acquisition analysts who need a quick debt schedule to plug into their underwriting models
- Loan officers and originators who want to show borrowers exactly how their payments break down over the term
- Asset managers who need to track debt service obligations and paydown across a portfolio
- Developers and sponsors who want to model different loan structures quickly before locking terms
In short: if you already have loan terms, this task gives you a finished, formatted amortization schedule.
Why It Matters
An amortization schedule is one of those outputs everyone needs and nobody wants to build. The math isn’t complicated. The Excel setup is just tedious: formulas referencing input cells, conditional logic for the IO-to-amortizing transition, handling edge cases like curtailments and balloon payments, formatting it so it’s actually readable.
You already know how to build one. That’s not the issue.
The issue is that you have three term sheets on your desk and a call in 20 minutes. Building a schedule for each one is 20 minutes of work per deal. That’s an hour you don’t have. So you eyeball the numbers, skip the detailed paydown analysis, and move on.
Without the schedule, you miss things. You don’t catch that the lender APR is 40 basis points above the note rate after fees. You don’t see that the balloon is larger than you assumed because the amort period is longer than the term. You don’t have a clean artifact to hand to your capital markets team or your LP.
This task turns 20 minutes of spreadsheet work into 10 minutes, and the output is more complete than what most people build manually: full period-by-period detail, borrower and lender metrics, sanity checks, all formatted and formula-driven. That’s the multiplier.
What the Output Looks Like
The Excel workbook generated by this task includes:
- An inputs section with all nine loan parameters in editable blue-font cells that drive every downstream formula
- A full period-by-period amortization schedule with beginning balance, payment, interest, principal, curtailment, and ending balance columns
- Automatic handling of interest-only periods, amortizing periods, and the balloon payment at maturity
- Borrower metrics including total interest paid, total principal paid, and loan paydown percentage
- Lender metrics including lender APR calculated with origination fees and discount points
- Built-in sanity checks that verify the schedule ties to the loan amount and payment calculations
The output is not a rough sketch you have to clean up. It’s a polished, formula-driven workbook, the kind you’d expect from a senior analyst who’s built hundreds of these.
CRE Agents is a platform built for commercial real estate professionals who want to move faster without cutting corners. Task #[TASK_NUMBER] is just the beginning.
Frequently Asked Questions About Building Loan Amortization Schedules With AI
Yes, always review the output before sharing externally. The schedule is formula-driven and accurate to the inputs provided, but you should verify that the extracted loan terms match your source document. The built-in sanity checks flag common errors automatically, so start there. Once you confirm the inputs are correct, every downstream calculation follows standard amortization math. Most users find one quick scan is all it takes.
Absolutely. The output follows the same structure and conventions used by institutional lenders and underwriting shops. It includes period-by-period detail, borrower and lender metrics, and lender APR calculated with fees and points. The formatting is clean, the formulas are transparent (no hardcoded values), and every input is in a clearly labeled editable cell. It’s the same deliverable a senior analyst would produce, just faster.
Yes. Run it once per loan. Each run produces a standalone Excel workbook, so you can build schedules for every deal in your pipeline without any setup or cleanup between runs. If you have five term sheets to model, that’s five runs at roughly 10 minutes each. The workbooks are independent, so you can share, archive, or plug them into your underwriting models individually.