Buyers: What Not to Do While Your Mortgage Is in Underwriting
Once your mortgage is in underwriting, the lender is checking that the financial picture you applied with still holds. Many lenders verify things again near closing, which can include employment, bank balances and sometimes credit. A change that seems harmless, such as financing a new sofa or moving savings between accounts, can raise questions, delay closing or change what you qualify for.
This article is a practical list of what to avoid while your loan is in process, and what to do instead. It doesn't walk through how underwriting works step by step; the A4H explainer on conditional approval to clear to close covers that. Lender requirements vary, so the most important rule on this list is simple: before any financial move, ask your loan officer first.
Why Small Changes Can Matter During Underwriting
Your loan approval is based on a snapshot of your credit, income, debts and assets. Underwriters look at things like your debt-to-income ratio, your credit history, the money available for your down payment and closing costs, and any reserves the loan program requires. If one piece of that snapshot changes, the lender may need to re-review the file, ask for more documents or reconsider the approval.
Until your loan is cleared to close and funded, approval remains subject to lender review. That's why the safest approach is to keep your financial life as steady and as well-documented as you can from application to closing.
What Not to Do, and What to Do Instead
1. Don't apply for new credit
That includes credit cards, auto loans, personal loans, store financing offers and buy-now-pay-later plans. A new account can add a credit inquiry, a new monthly payment or both, and lenders may ask you to explain recent inquiries. A new payment can also change your debt-to-income ratio. The A4H article on how your credit affects your mortgage options explains why that matters.
Instead: Hold off on new credit until after closing. If you think you truly need new credit before then, talk with your loan officer before you apply.
2. Don't make big purchases
New furniture, appliances, a car or a big vacation can affect your loan in two ways. Charging them adds debt. Paying cash reduces the money the lender counted on for your down payment, closing costs and any required reserves.
Instead: Make a list of what you'll need for the new home and plan to buy after closing. If a purchase can't wait, ask your loan officer how it might affect your file first.
3. Don't change jobs or how you're paid without telling your lender
Changing employers, switching from salary to commission, moving to self-employment, cutting hours or taking unpaid leave can all affect how a lender calculates your income. Some changes may be manageable; others may require more documentation or change what you qualify for. Self-employment in particular is often documented differently, and some programs look for a longer track record of self-employed income.
Instead: If you're considering a change, talk with your loan officer before you accept or announce it. If a change happens that isn't your choice, tell your loan officer right away.
4. Don't make large or undocumented deposits
Underwriters often ask where deposits came from, especially ones that look unusual compared with your regular income. Cash deposits can be especially hard to document. Money from a relative may need to be handled as a gift with specific paperwork, depending on the loan program. The A4H article on gift money rules and paperwork covers how that typically works.
Instead: Ask your loan officer before depositing anything outside your normal paychecks. Keep a paper trail, such as a copy of the check, a gift letter or a bill of sale, for anything you deposit.
5. Don't move money between accounts without a paper trail
Shifting funds from savings to checking, consolidating accounts, or cashing out investments can create new deposits the lender needs to trace. Closing an account the lender already reviewed can also lead to extra document requests.
Instead: Leave your money where it is unless your loan officer or closing agent tells you to move it. If you do move it, keep complete statements that show the money leaving one account and arriving in the other.
6. Don't co-sign for anyone
When you co-sign a loan or lease, lenders may treat that obligation as your debt, even if someone else makes the payments. That can affect your debt-to-income ratio. The A4H explainer on understanding debt-to-income shows how lenders often look at monthly obligations.
Instead: Politely wait until after closing, and ask your loan officer before agreeing to co-sign anything.
7. Don't close credit cards or other accounts
Closing an older card can affect how much of your available credit you're using and the length of your credit history, which may change your credit scores. It can feel like a responsible move, but the timing may not help you.
Instead: Keep accounts open and in good standing. If you want to close one, ask your loan officer whether to wait until after closing.
8. Don't pay off or consolidate debt without asking
Paying down debt sounds like it should always help. During underwriting, though, it can use up funds the lender counted on, require new documentation, or briefly affect your credit. Sometimes paying off a specific debt is helpful, and sometimes a lender asks you to do it as a condition, but that's a decision to make with your loan officer.
Instead: Ask before paying off, paying down or consolidating any debt. If the lender wants a debt paid, they'll usually tell you which one and how to document it.
9. Don't miss or delay payments
A late payment during underwriting can show up on your credit and raise questions. With moving costs and a busy schedule, it's easy to lose track of a due date.
Instead: Set reminders or autopay for every bill, including your current rent or mortgage, until well after closing.
10. Don't ignore or delay document requests
Underwriters often ask for updated pay stubs, bank statements, letters of explanation or proof of where money came from. Slow or incomplete responses are a common cause of closing delays, and missing a request can hold up the clear to close.
Instead: Answer requests as soon as you can. Send every page of a statement, even the blank ones, and read each request carefully so you send exactly what was asked for. If you don't understand a request, call your loan officer.
11. Don't leave anything out
Be honest and complete with your lender. Knowingly giving false information on a mortgage application can have serious legal consequences. If you're unsure whether something is relevant, such as a new debt, a pending legal matter or an upcoming change in income, ask.
Instead: Tell your loan officer about changes as they happen, even if you think they're minor.
If Something Already Changed
If you've already opened a card, changed jobs or made a big purchase, don't panic and don't hide it. Call your loan officer, explain what happened and ask what they'll need. Depending on the change and the loan program, it may mean extra paperwork, a re-review or a change to your loan terms, and in some cases it could affect approval. The sooner your lender knows, the more options there may be. Let your agent know too, since a delay could affect your contract's financing deadline or closing date. The A4H article on a buyer's timeline from offer to keys shows where underwriting fits in the larger schedule.
A Quick Checklist Until Closing
- Ask your loan officer before any financial move
- No new credit, no co-signing, no closing accounts
- Hold big purchases until after closing
- Keep your job and pay structure steady, or tell your lender right away
- Document every deposit outside normal pay
- Keep money where it is unless told otherwise
- Pay every bill on time
- Answer document requests quickly and completely
Frequently Asked Questions
Will my lender check my credit again before closing?
Many lenders re-check or monitor credit before closing, and many also re-verify employment near the closing date. Practices vary by lender and loan program, so assume changes may be noticed and ask your loan officer what to expect.
Can I keep using my credit cards normally?
Normal, everyday use is often fine, but running up balances can affect your credit and your debt-to-income ratio. Keep balances steady and pay on time. If you're unsure, ask your loan officer.
Once I'm clear to close, can I go furniture shopping?
It's generally safest to wait until your loan has closed and funded. A lender may still verify information after the clear to close. Ask your loan officer when it's safe to make larger purchases.
What if I lose my job during underwriting?
Tell your loan officer right away. A loss of income can affect approval, and your lender needs to know before closing. Also let your agent know, because your contract's terms, such as a financing contingency, may matter.
The Bottom Line
Underwriting is the time to keep your finances quiet, steady and well-documented. Skip new credit and big purchases, keep your job and accounts as they are, document every unusual deposit, pay every bill on time and answer lender requests quickly. Most of all, ask your loan officer before any financial move, not after.
This article is general information, not legal, tax or financial advice. Underwriting requirements vary by lender and loan program, and loan approval is subject to credit approval and lender review. Talk with a licensed loan officer about your specific situation. Advice4Homeownership is a publisher, not a lender.
