11.2 Loan Types, Programs & Underwriting Standards

11.2 Loan Types, Programs & Underwriting Standards

Exam Focus: Mortgage underwriting evaluates both the borrower's creditworthiness and the collateral property's value. The broker examination requires detailed knowledge of the distinction between conforming and non-conforming conventional loans, Private Mortgage Insurance (PMI) cancellation mandates under the Homeowners Protection Act of 1998, government-backed financing programs (FHA, VA, USDA), and exact Debt-to-Income (DTI) qualifying calculations using standard front-end and back-end ratios.

1. Conventional Mortgage Loans & Private Mortgage Insurance (PMI)

A conventional loan is a residential mortgage loan that is neither insured by the Federal Housing Administration (FHA) nor guaranteed by the Department of Veterans Affairs (VA) or the United States Department of Agriculture (USDA).

┌─────────────────────────────────────────────────────────────────────────────┐
│                     CONVENTIONAL MORTGAGE CATEGORIES                        │
├──────────────────────────────────────┬──────────────────────────────────────┤
│      CONFORMING CONVENTIONAL LOANS   │    NON-CONFORMING / JUMBO LOANS      │
├──────────────────────────────────────┼──────────────────────────────────────┤
│ • Underwritten to strict Fannie Mae/ │ • Loan amount exceeds Federal Housing│
│   Freddie Mac secondary guidelines   │   Finance Agency (FHFA) baseline cap │
│ • Must not exceed statutory FHFA     │ • Cannot be purchased or securitized │
│   conforming loan limits             │   by Fannie Mae or Freddie Mac       │
│ • Standard DTI ratios (28% / 36%)    │ • Stricter underwriting criteria     │
│ • Highly liquid secondary market     │ • Requires higher credit scores &    │
│   saleability via GSE MBS            │   significant post-closing cash reserves│
└──────────────────────────────────────┴──────────────────────────────────────┘

Private Mortgage Insurance (PMI) Mechanics

When a borrower obtains a conventional loan with a Loan-to-Value (LTV) ratio exceeding 80% (meaning the borrower provides a down payment of less than 20%), the lender requires Private Mortgage Insurance (PMI) to protect against default risk.

• Coverage: PMI does not insure the entire loan amount; it insures the top 20% to 25% of the loan balance against loss in the event of default and foreclosure.
• The Homeowners Protection Act of 1998 (HPA / "PMI Cancellation Act"): Federal law (12 U.S.C. § 4901) establishes strict statutory cancellation rights for residential mortgages on single-family primary residences:
  1. Borrower-Requested Cancellation (80% LTV): The borrower has the legal right to submit a written request to cancel PMI once the principal balance reaches 80% of the original property value (based on the scheduled amortization table or actual prepayments), provided the borrower has a good payment history and no subordinate liens.
  2. Automatic Lender Cancellation (78% LTV): The lender must automatically terminate PMI on the date the principal balance is scheduled to reach 78% of the original purchase price or appraised value (whichever was lower at origination), provided the loan is current.

2. Government-Backed Loan Programs: FHA, VA & USDA

To expand homeownership opportunities for low-to-moderate-income families and veterans, the federal government operates specialized mortgage insurance and guarantee programs:

1. FHA-Insured Mortgage Loans (HUD Title II, Section 203(b))

• Purpose & Mechanism: The Federal Housing Administration (FHA), a division of HUD, does not originate or fund loans. Instead, it insures approved private lenders against 100% of the losses sustained from borrower default.
• Low Down Payment: Requires a minimum down payment of only 3.5% (96.5% LTV) for borrowers with a credit score of 580 or higher (10% down payment for scores between 500 and 579).
• Mortgage Insurance Premiums (Two Types Required):
  1. Upfront Mortgage Insurance Premium (UFMIP): A one-time charge (currently 1.75% of the base loan amount) paid at closing or financed into the total mortgage balance.
  2. Annual Mortgage Insurance Premium (Annual MIP): An ongoing annual premium (typically 0.55% of the remaining balance) divided into 12 equal monthly installments and added to the monthly PITI payment. For loans with maximum LTV, Annual MIP remains for the entire life of the loan.
• FHA Amendatory Clause: Mandatory contractual addendum stipulating that the buyer cannot be required to purchase the property or forfeit their earnest money if the property appraises for less than the agreed purchase price.
• Assumability: FHA loans are fully assumable with lender credit qualification (no investor due-on-sale enforcement without cause).

2. VA-Guaranteed Mortgage Loans (GI Bill)

• Purpose & Mechanism: The Department of Veterans Affairs (VA) guarantees the top portion (typically 25%) of a mortgage loan originated by approved private lenders on behalf of eligible military service members, veterans, and qualifying surviving spouses.
• 100% Financing (0% Down Payment): Eligible veterans can purchase a primary residence with no down payment (100% LTV).
• NO Monthly Mortgage Insurance: VA loans have zero monthly mortgage insurance premiums (no PMI and no annual MIP), significantly lowering the veteran's monthly payment.
• Certificate of Eligibility (COE): Verifies the veteran's entitlement based on required active-duty or military service duration.
• VA Funding Fee: A one-time statutory fee (ranging from 1.25% to 3.3% depending on down payment and first-time vs. subsequent use) that can be paid in cash or financed into the loan. The Funding Fee is completely waived for veterans receiving VA compensation for a service-connected disability and eligible surviving spouses.
• Certificate of Reasonable Value (CRV): An appraisal issued by a VA-certified appraiser establishing the property's maximum loan ceiling. The mandatory VA Escape Clause protects the veteran's earnest money if the CRV comes in below the contract sales price.

3. USDA Rural Housing Loans (Section 502 Direct & Guaranteed)

• Purpose: Administered by the U.S. Department of Agriculture to promote homeownership in designated rural areas and outlying suburban communities.
• 100% Financing: Offers 0% down payment financing for low-to-moderate-income families whose household income does not exceed 115% of the Area Median Income (AMI).

3. Comprehensive Loan Programs Comparison Matrix

4. Borrower Underwriting & Qualifying Debt-to-Income (DTI) Calculations

Mortgage underwriters evaluate a borrower's capacity to repay by calculating two statutory Debt-to-Income (DTI) ratios based on the borrower's Gross Monthly Income (GMI).

┌─────────────────────────────────────────────────────────────────────────────┐
│                     QUALIFYING RATIO MATHEMATICAL FORMULAS                  │
├─────────────────────────────────────────────────────────────────────────────┤
│                                                                             │
│ 1. FRONT-END RATIO (Housing Expense Ratio):                                │
│                     Total Monthly PITI Housing Expense                      │
│    Front-End DTI = ────────────────────────────────────  ≤ Target Benchmark │
│                             Gross Monthly Income                            │
│                                                                             │
│ 2. BACK-END RATIO (Total Debt Ratio):                                       │
│                     Total Monthly PITI + Recurring Monthly Debts            │
│    Back-End DTI  = ────────────────────────────────────────────── ≤ Target  │
│                                 Gross Monthly Income                        │
│                                                                             │
└─────────────────────────────────────────────────────────────────────────────┘

Components of Total Monthly Housing Expense (PITI)

• P = Principal payment (reduces outstanding loan balance)
• I = Interest payment (cost of borrowing)
• T = Property Taxes (1/12th of annual county/city/ISD ad valorem taxes placed in escrow)
• I = Hazard Insurance (1/12th of annual homeowner insurance policy + flood/windstorm insurance)
• Additional Items: Monthly Private Mortgage Insurance (PMI) or FHA MIP, plus mandatory Homeowners Association (HOA) or Condominium maintenance dues.

Recurring Monthly Debts (Back-End Debt Definition)

Includes all recurring contractual financial obligations extending beyond 10 months: auto loans, minimum credit card payments, student loans, child support, alimony, and personal installment loans. (Excludes utilities, groceries, auto insurance, and healthcare expenses).

Standard Underwriting Qualifying Benchmarks

Comprehensive DTI Calculation Scenario

Case Scenario: Buyer Sarah earns a gross annual salary of $120,000 ($10,000 Gross Monthly Income). Her recurring monthly obligations include an auto loan payment of $450/month, student loans of $300/month, and minimum credit card payments of $250/month (Total recurring non-housing debt = $1,000/month). She is applying for a standard conventional loan (28% / 36% ratios).

Step 1: Calculate Maximum Housing Expense under Front-End Ratio (28%): $\text{Max PITI} = \$10,000 \times 0.28 = \$2,800$

Step 2: Calculate Maximum Housing Expense under Back-End Ratio (36%): $\text{Max Allowable Total Debt} = \$10,000 \times 0.36 = \$3,600$ $\text{Max PITI under Back-End} = \$3,600 - \$1,000 = \$2,600$

Conclusion: To qualify under both conventional guidelines, Sarah's maximum allowable monthly PITI housing expense is the lesser of the two figures, which is $2,600 per month.