The Ultimate Loan Audit Document Checklist (2026 Edition)

Before an auditor can find errors, overcharges, or legal violations in your loan, they need the raw data. Whether you are dealing with a mortgage, an auto loan, or student debt, having the right documents is the difference between a successful forensic audit and a dead end.

We created this comprehensive checklist so you know exactly what to request from your lender or pull from your files before starting an audit. Note: If you are missing any of these documents, your lender is legally required to provide them upon written request.

Mortgage Loan Audit Checklist

Mortgages are the most complex financial instruments most consumers will ever sign. To perform a full forensic securitization audit and check for TILA/RESPA violations, you need the complete origination file.

• The Promissory Note: This is the actual IOU. We need to see the original note and any "Allonges" (attachments) that show how the note was endorsed and transferred between banks.
• The Deed of Trust (or Mortgage): The document that secures the note to your property. We need the recorded copy showing the county stamps.
• Closing Disclosure (CD) or HUD-1 Settlement Statement: This shows every fee you were charged at closing. This is where we find illegal kickbacks and overcharges.
• Loan Estimate (or Good Faith Estimate): We compare this to the Closing Disclosure to ensure fees did not increase beyond legal tolerance limits.
• Notice of Right to Cancel: Required for refinances. If this was filled out incorrectly, you may have an extended right to rescind the loan.
• Complete Payment History: A line-by-line ledger from your servicer showing every payment made, how it was applied (principal vs. interest), and every fee assessed.
• Any Notices of Default or Foreclosure Documents: If you are in active foreclosure, we need every piece of correspondence from the trustee or servicer.

Auto Loan Audit Checklist

Auto loan audits focus heavily on dealership math and hidden add-ons. Dealership finance offices are notorious for slipping unauthorized products into the final contract.

• Retail Installment Sales Contract (RISC): The long contract you signed at the dealership. This shows the exact interest rate, amount financed, and total sale price.
• Buyer's Order / Bill of Sale: This breaks down the vehicle price, trade-in allowance, and taxes before financing is applied.
• Aftermarket Product Contracts: Separate agreements for extended warranties, GAP insurance, tire and wheel protection, or prepaid maintenance. We check these to see if you were charged for products you declined.
• Payment Ledger: From the finance company, showing how your monthly payments are being applied to the principal balance.

Student Loan Audit Checklist

Student loans are often transferred between multiple servicers over decades, making payment histories incredibly messy. An audit untangles the math to ensure you are not paying capitalized interest you do not owe.

• Master Promissory Note (MPN): The original agreement you signed when taking out the loans.
• Federal Student Aid (FSA) Data File: You can download this text file directly from StudentAid.gov. It contains the complete history of all your federal loans.
• Complete Servicer Payment History: You must request this directly from your current servicer. It should show every payment since the loan entered repayment.
• Income-Driven Repayment (IDR) Approvals: Documents showing what your payment was supposed to be based on your income, which we compare against what you were actually billed.

Next Steps

Once you have gathered these documents, do not try to untangle the math yourself. Explore our professional loan audit services or contact SDAudit today. We will review your files, find the errors, and give you the proof you need to hold your lender accountable.