What Not to Do Before Closing on a House: Credit, Cash, Jobs

A $200 car payment can pass through a mortgage file without anyone noticing. A $412 one can send the same file back through underwriting. The difference is not the car, and it is not your credit score. It is a threshold in a table: the debt-to-income ratio your lender recalculates has to cross 45%, or move three full percentage points, before anything is required to be re-run.

That is the shape of nearly every warning on every "don't do this before closing" list. Almost none of them are about punishment for spending money. Each is a documentation rule with a number in it, and the number is more often about your income than about the thing you bought. Which means the useful version of the list is not avoid everything — it is know which number you are near, and which piece of paper makes the problem ordinary again.

Everything below is sourced to the rule it comes from, with the date I read it. Thresholds quoted are Fannie Mae's conventional requirements, the rulebook behind most non-government loans. If your file is FHA, VA or USDA, the structure is the same and the numbers are not; ask your loan officer which handbook your file answers to before you rely on a figure here.

The paragraph you signed and never read back

Section 6 of the Uniform Residential Loan Application — Freddie Mac Form 65 / Fannie Mae Form 1003, Effective 1/2021, read 2 October 2026 — is headed Acknowledgments and Agreements, and the first two bullets of its subsection (1), The Complete Information for this Application, do most of the work:

The information I have provided in this application is true, accurate, and complete as of the date I signed this application.

If the information I submitted changes or I have new information before closing of the Loan, I must change and supplement this application, including providing any updated/supplemented real estate sales contract.

Read those together and the duty is clear enough: the representation is dated, the obligation is not. It runs to the closing of the loan, and it is phrased as something you do, not something you wait to be asked about. The last bullet of the same subsection says that any intentional or negligent misrepresentation of information may bring civil liability and criminal penalties "under the provisions of Federal law (18 U.S.C. §§ 1001 et seq.)."

Subsection (6) of the same page is the other half. By signing, you expressly authorize the lender and other loan participants to obtain and share a consumer credit report on you and to "verify any data contained in my consumer credit report, my loan application and other information supporting my loan application" — "for so long as they have an interest in my loan or its servicing."

So the second look is not a trick played on you late in the process. It is permission you gave on day one, next to a duty you accepted in the same paragraph.

Three clocks, all of them ending at the note date

The date that governs is the note date — the day you sign the promissory note — and not the date on the calendar invite your agent sent. Three separate requirements count backwards from it.

Four months, for documents. Selling Guide B1-1-03, Allowable Age of Credit Documents (04/02/2025, read 2 October 2026) says credit documents — credit reports and employment, income and asset documentation — "must be no more than four months old on the note date," and that where consecutive documents are in the file, the most recent one sets the age. Nothing in your behavior triggers this. Time does.

Ten business days, for the employment call. B3-3.1-04, Verbal Verification of Employment (03/04/2026, read 2 October 2026) requires a verbal VOE within 10 business days before the note date for employment income, and within 120 calendar days for self-employment income. The lender "must independently obtain a phone number and, if possible, an address for the borrower's employer" — by directory, internet or licensing bureau — rather than taking the number from your application.

No fixed day, for credit. The guide does not name a date for a second credit pull the way it names one for the employment call. What it does instead is make new debt the lender's problem: B3-2-10 lists among its resubmission triggers "additional debt(s) disclosed by the borrower or identified by the lender during the mortgage process." A rule written that way assumes somebody looks.

Note what happens when the closing date slips. The clocks do not slide with it — they keep ending at the note date, which has moved, so documents that were current become stale and a verbal VOE that was done becomes too old. That is one reason a delay produces a fresh round of requests rather than a quiet wait, and it is covered in more detail in underwriting conditions and why clear to close slips.

Credit: your lender is pricing a payment, not reading a score

Here is the table that decides whether a new monthly obligation matters, reproduced from B3-2-10's own resubmission examples (the section is dated 12/04/2019; I pulled it on 2 October 2026 and these four rows were still there):

The third row looks like an error until you read the trigger language: resubmission is required when the recalculated ratio "now exceeds 45%," or increases by three percentage points or more where the recalculated ratio is 50% or less. A file already above 45% cannot newly exceed it, so the 46-to-48 move clears both tests — two points, and no crossing. The 35-to-40 move fails the second test despite ending at a comfortable 40%.

Which produces the one piece of arithmetic worth doing yourself. Three percentage points of your gross monthly income is the practical ceiling on any new payment. On $7,500 a month that is $225; on $4,200 a month it is $126. A payment at or above that figure forces the file back through the system even if the resulting ratio looks fine. That is an illustration of the method, not a number to quote at anyone — your qualifying income is whatever your lender calculated it to be, which is frequently not what you think you earn.

Things that create a new monthly payment, in rough order of how often they show up two weeks before closing: a financed vehicle, store financing for furniture or appliances (a promotional rate is still a tradeline), a credit card carrying a balance, and a loan co-signed for somebody else, which is your payment on your credit report regardless of who writes the check.

Two moves people make trying to help deserve their own warning, because both land on a different trigger in the same table. Paying a debt down is generally fine. Paying it down with money the file is counting on is not: B3-2-10 also requires resubmission when the actual assets needed to close exceed the "Funds Required to Close" figure in the DU findings, unless the lender has documented enough liquid assets to cover it, and when verified reserves fall below the "Reserves Required to be Verified" figure — with an allowance only where documented reserves still equal at least 90% of it. Your down payment and your reserves are line items in an approval. Spending them changes the approval.

Cash: "large" is measured against your income

The most misunderstood rule in this stretch is the large-deposit rule, because almost everyone assumes it has a dollar amount in it. It does not. B3-4.2-02, Depository Accounts (12/14/2022, read 2 October 2026):

A large deposit is defined as a single deposit that exceeds 50% of the total monthly qualifying income for the loan. When bank statements (typically covering the most recent two months) are used, the lender must evaluate large deposits.

On $3,500 of monthly qualifying income, $1,800 is a large deposit. On $9,000, it is not. The same transfer is a question on one file and invisible on another.

What happens next depends on the transaction, and the guide is explicit about the asymmetry. On a refinance, "documentation or explanation for large deposits is not required." On a purchase, if the funds are needed for the down payment, closing costs or reserves, "the lender must document that those funds are from an acceptable source" — and the examples of acceptable documentation it offers are modest: a written explanation from the borrower, proof of ownership of an asset that was sold, or a copy of a wedding invitation supporting receipt of gift funds.

The consequence of failing to document is not denial either. It is subtraction: verified funds "must be reduced by the amount (or portion) of the undocumented large deposit," and the lender then has to confirm the remaining funds still cover down payment, closing costs and reserves. An unexplained deposit does not make you look dishonest so much as it makes you look poorer than you are, right at the moment somebody is checking whether you can close.

Only the unsourced part counts, which the guide demonstrates with its own scenario: a borrower with $4,000 of monthly income receives a $3,000 deposit, $2,500 of which is documented as a federal tax refund. The $500 remainder is 12.5% of monthly income, short of the 50% definition, so the deposit is not a large deposit at all.

Gifts have their own paperwork, and it is more specific than most people expect. B3-4.3-04, Personal Gifts (02/04/2026, read 2 October 2026) requires a gift letter signed by the donor that specifies the actual or maximum dollar amount, includes the donor's statement that no repayment is expected, and gives the donor's name, address, telephone number and relationship to you. The donor "may not be, or have any affiliation with, the builder, the developer, the real estate agent, or any other interested party to the transaction." And the transfer itself has to be evidenced — the guide's list includes a copy of the donor's check with your deposit slip, withdrawal and deposit slips, evidence of an electronic transfer to your account or to the closing agent, the donor's check to the closing agent, or a settlement statement showing receipt. Where the money does not move until settlement, the donor must hand the closing agent an electronic transfer, a certified check, a cashier's check or another official check.

Every item on that list is a paper trail. Which is the practical rule hiding inside all of it: do not accept cash. Currency satisfies none of those documentation options, and a deposit of it cannot be made ordinary after the fact.

Two smaller habits cause the same trouble. Shuffling money between your own accounts manufactures deposits that somebody now has to trace to their origin, and the account you drained still needs statements. And selling something — a car, a motorcycle, a camera — is a perfectly acceptable source if you keep the bill of sale and can show you owned the thing. Without those, it is an unsourced deposit that gets subtracted.

Employment: the call lands inside the last ten business days

B3-3.1-04 states the reason for the late timing in one sentence: the verbal VOE "is intended to help the lender mitigate risk by confirming, as late in the process as possible, that the borrower remains employed as disclosed on the loan application," and a change in employment status "could have a significant impact on that borrower's capacity to repay the mortgage loan and must be fully reevaluated."

Three details inside that are worth knowing before you make a decision rather than after:

• Temporary leave is not unemployment. If the employer confirms the borrower is currently on temporary leave, the guide requires the lender to consider the borrower "employed," with the income treatment handled under its temporary-leave section.
• Self-employment income gets 120 calendar days, not ten business days, which sounds generous until you notice that the verification is of a business existing, not of a paycheck arriving.
• Income moving down is its own trigger. B3-2-10 lists "verified income is less than the income on the loan application submitted to DU" alongside new debt as a cause of resubmission. A commission structure that changes, or a shift from overtime-heavy to base-only hours, is a change even when nobody changed employers.

The expensive version is moving from a W-2 job to 1099 or to your own company. It is not forbidden. It is that the documentation the whole file rests on — pay stubs, a verbal VOE to an employer, an income calculation built on wage history — stops describing how you get paid, and the replacement documentation for self-employment is a different and longer set.

Also: an alternative is permitted. The lender may obtain the verbal VOE after closing, up to the time of loan delivery, and if it cannot be obtained before delivery the loan is ineligible for sale to Fannie Mae. That is a lender problem rather than yours, but it explains why a loan officer who has been relaxed all month gets strange about your start date.

The list of things that are fine

Most of the advice circulating about this window is an undifferentiated "change nothing," which is both impossible and unhelpful. Against the rules above, these are not events:

• Paying your existing bills on schedule, including using a credit card the way you normally do and paying it off.
• Your usual paycheck deposits, at their usual size and interval.
• Paying the inspector, the appraiser, the surveyor — expected transaction costs leaving an account.
• A tax refund arriving, provided you keep the documentation that says what it was.
• Booking movers, ordering utilities, buying a homeowner's policy. The policy is required; the movers are paid after the keys exist.
• The earnest money already sitting in escrow, which was verified when it was deposited.

And one action is free in every direction: telling your loan officer before you do the thing. A question asked in advance costs an email. The same facts discovered in a credit refresh eight days out cost a conversation, a document, and sometimes a closing date.

If you have already done it

Work out which document makes the event ordinary, then send it unprompted and in writing so it lands in the file rather than in somebody's memory.

Then ask the right question about timing. Not "how many days until closing," but how many days until the note date, and does anything in the file go stale before then — because the four-month document rule and the ten-business-day employment call both answer to that date, and a delay moves it.

One thing a new condition does not automatically do is add three days to your closing. The three-business-day waiting period restarts for a short, closed list of changes, and a late document request is not on it; the mechanics are in the Closing Disclosure three-day rule and what resets it. What a late condition does do is consume the slack in the schedule, which is why it so often shows up on the list of early signals that a deal is dying.

Lenders are not looking for a reason to say no in the last three weeks. They are confirming that the file they approved still describes the borrower who is about to sign. Every rule above is a version of the same question — is this still true? — and almost all of them can be answered with one document, provided you send it before someone else has to go looking.