What Is Mortgage Underwriting?

Mortgage underwriting is the process in which a bank or lender evaluates a loan applicant’s credit, income, assets, debts, and the property’s value to determine whether to approve the loan.
In other words, it’s the stage where the lender decides “Does this borrower have the ability to repay the loan?”

Main Steps of the Mortgage Underwriting Process

① Credit Review

• • • The lender reviews the borrower’s credit score, payment history, and any delinquencies or derogatory accounts.
    • A higher FICO score increases the likelihood of loan approval with better terms.

② Income Verification

• • • They verify whether the borrower has stable income through documents such as W-2s, tax returns, pay stubs, and bank statements.
    • For 1099 self-employed borrowers, the focus is on business income and tax filings. Some programs allow the use of business bank statements instead of tax returns.
    • For investment properties, programs such as DSCR loans can use rental income instead of tax returns to qualify.
    • For standard (QM) loans, the most recent two years of tax returns are require

③ Asset Verification

• • • They verify whether you have sufficient funds to cover the down payment and closing costs,
      and whether the source of funds is clearly documented.
    • Recent large deposits may also require proof of source.
    • For standard (QM) loans, the most recent two months of bank statements are required.
      If you prepare the funds in advance, you can proceed faster without needing to provide additional documentation for the source of funds.

④ Debt and DTI (Debt-to-Income) Ratio Review

• • • All monthly debts (car loans, credit cards, student loans, etc.) are totaled to calculate the Debt-to-Income ratio (DTI).
    • Generally, a DTI of 43% or lower is considered ideal for approval.

⑤ Appraisal and Property Review

• • • An appraisal is ordered to confirm the home’s market value, ensuring that the loan amount does not exceed the property’s worth.

⑥ Final Underwriting & Loan Approval

• • • Once all conditions (documents or explanations) are satisfied, the file receives Clear to Close (CTC) status, and the loan moves to the closing stage.

💡 Tips During the Underwriting Process

• • • Avoid large unexplained deposits or withdrawals — they may require source of funds verification.

    • Do not open new credit cards or loans during the process.

    • Avoid any employment or income changes until after closing.

    • Submit all requested documents promptly to prevent delays.