Desktop Underwriter Practice Cases​

Our practice cases give you unlimited hands-on experience with the underwriting process. The cases represent different common types of loans and provide data for one or more borrowers. The expected underwriting recommendation for each practice case varies (based on the latest version of DU).

Using the Practice Cases

Lenders are encouraged to use these practice cases as a framework for exploring the underwriting process using different loan products, property types, and interest rates. Lenders are also encouraged to create their own practice cases using the practice borrowers available through the Test Credit Agency. A list of all practice borrowers available is shown in the Test Credit Report Characteristics.

There are three documents to download to use with each practice case.

  • The Instructions PDF provides a description of the case, including sections of the Findings page.
  • The 1003 PDF provides a copy of the completed Uniform Residential Loan Application form (Form 1003) for the case that you can use if you are entering the data manually.
  • The Import file contains the actual loan data for the case. Download this file to your computer to import the loan data directly into DU or into any LOS that accepts the Fannie Mae Version 3.2 file format. The Import files are ZIP files.

To download and extract a ZIP file using WinZip®:

  1. Click the link.
  2. Select a folder on your computer where you want to save the file.
  3. Right-click the saved .zip file. A Windows® menu appears.
  4. Select (left-click) WinZip, then Extract to folder. A new folder is created, which uses the title of the file name, minus the extension. The file resides in this folder.

       Note: If using a software package other than WinZip to unzip files, refer to the instructions provided by that manufacturer.

Test Credit Agency

The Test Credit Agency allows lenders  to request simulated credit reports for the practice borrowers. These reports are available to lenders free of charge, as are any underwriting submissions requested for the practice cases. For detailed instructions on submitting practice cases to the Test Credit Agency, see:

Practice Cases

Get practice evaluating a 95% LTV mortgage for borrowers purchasing a leasehold estate as their primary residence. This practice case’s complexity is basic, and learning objectives include:

  • Entering data for borrowers who share joint credit
  • Ordering a three-in-file merged credit report
  • Entering data for self-employed borrowers
  • Entering “Other” income
  • Entering “Cash deposit on sales contract”
  • Entering a buydown option
  • Entering “Estate in leasehold”

Files to download:

Get practice evaluating an 85% LTV mortgage for borrowers who are refinancing their primary residence. This practice case’s complexity is intermediate, and learning objectives include:

  • Entering data for two borrowers who share joint credit
  • Entering data for a self-employed borrower
  • Ordering a credit report
  • Entering “Other” income
  • Completing the Details of Transaction for a refinance

Files to download:

Get practice evaluating an 80% LTV mortgage for borrowers refinancing their second home. This practice case’s complexity is complex, and learning objectives include:

  • Entering housing expenses for second homes
  • Entering a resubordinated HELOC
  • Adding liabilities that do not appear on the credit report
  • Paying off an existing first mortgage while resubordinating an outstanding HELOC

Files to download:

Get practice evaluating a VA mortgage for borrowers purchasing a primary residence. This practice case’s complexity is intermediate, and learning objectives include:

  • Entering data for a VA loan
  • Entering a job-related expense
  • Ordering a credit report
  • Entering data for a second job

Files to download:

Get practice evaluating an FHA mortgage for a borrower purchasing a primary residence. This practice case’s complexity is intermediate, and learning objectives include:

  • Ordering a credit report
  • Entering data for an FHA loan
  • Entering a gift asset as a down payment source and an asset

Note: You must have a valid FHA Lender ID or a valid Sponsored Originator EIN (if a broker or correspondent) to submit this practice case for an underwriting recommendation. In addition, you can use the borrower and Social Security number listed in this document when performing practice submissions to the FHA TOTAL Mortgage Scorecard.

Files to download:

Get practice evaluating a 90% LTV high-balance mortgage loan application. This practice case’s complexity is intermediate, and learning objectives include:

  • Entering data for two borrowers who share joint credit
  • Ordering a credit report
  • Entering data for a high-balance mortgage loan in a high-cost area

Files to download: