MBA CRU study guide
MBA CRU · Work through your exam, one topic at a time.
The Certified Residential Underwriter (CRU) designation appears in the Mortgage Bankers Association's catalog of Certificates and Designations, listed alongside the AMP, CMB, CRI, CCMS, RCMS, CMCP, and the Residential Loan Processor Certificate. That listing is the only thing the source page confirms: it names the credential and places it under MBA's certificates-and-designations menu, which also links to a Digital Badge Program by Credly. The page does not publish eligibility rules, an exam blueprint, domain weights, question counts, a time limit, a passing score, a fee, a retake policy, or a validity period, so treat any figure you see elsewhere as unverified until you confirm it with MBA directly. The credential is aimed at professionals who evaluate residential loan files - income, assets, credit, collateral, and program guidelines - but the source does not state prerequisites, so check the designation page before assuming a required years-of-experience threshold. Because the published material is thin, preparation should lean on the source of truth: read the CRU designation page and its linked policies in full, then build a study plan around the residential underwriting topics MBA's single-family education catalog covers, including loan production and underwriting, regulatory compliance and fraud, and secondary-market considerations. Practice explaining decisions in writing, since underwriters must justify exceptions and document compensating factors. Topics on this exam: Residential Underwriting. The MBA CRU study guide has 1 section and about 396 words.
01Residential Underwriting
The Residential Underwriting domain tests the decision chain from application to eligible collateral. You must verify income, assets, credit, and property; calculate DTI and LTV/CLTV; apply investor, insurer, and program rules; and document any exception with compensating factors. Occupancy must match program requirements, and investment properties require rental income analysis and reserves. Salary/wage base income is supported by a YTD paystub and W-2; bonus, overtime, and commission are generally averaged over two years and must be likely to continue.
396 words, about 2 minMore study resources for MBA CRU
- Practice questionsFor a conventional conforming loan, what is the maximum allowable total debt-to-income ratio when the borrower has strong credit, verified reserves, and no compensating risk factors?
- FlashcardsPITI. The four components of a housing payment: principal, interest, property taxes, and hazard insurance.
- Cheat sheetQualifying ratio limits for conventional loans: housing ratio (PITI / gross monthly income) generally capped at 28%, total debt ratio (PITI plus all monthly obligations / gross monthly income) generally capped at 36%; FHA commonly allows 31% housing and 43% total with compensating factors.
- Key termsMortgage. A loan secured by real property, where the lender can take the home if the borrower fails to repay.
- Study planMap the full residential underwriting workflow from application intake to final decision, and label each stage with its decision point.
- Common mistakesThe tax return is treated as a single income figure rather than a reconciliation exercise; candidates under time pressure grab the bottom line and move on, and they have not internalized which Schedule C and Form 1120 lines are cash versus non-cash.
- Exam-day guideBring the original, unexpired ID in the name you used to register.