What Happens If Your Credit Score Drops During a Mortgage Transaction?

I recently received a call from a home buyer who was anxious — her loan officer had told her that her credit score had dropped below a key threshold and she may no longer qualify for the mortgage she’d been approved for. It was a stressful situation that could have been avoided with a little advance awareness.

Credit scores are not static. They change constantly based on account activity, balances, payment history, and new inquiries. When your credit report is pulled at the start of a mortgage transaction, it’s a snapshot of that moment — and a lot can change between application and closing.

How Long Is a Credit Report Valid for a Mortgage?

For most conventional loans, a credit report is valid for 90 to 120 days from the date it was pulled. If your transaction is taking longer than expected and your credit report expires before closing, the lender may need to pull a new one — and your scores at that point may be higher or lower than they were originally.

A dropping score on a refreshed credit report can affect your loan approval, your interest rate, or your mortgage insurance eligibility depending on your loan-to-value ratio and the program you’re using. This is particularly impactful in the 720, 740, and 760 score tiers where conventional pricing and PMI rates shift meaningfully.

What Can Cause Your Credit Score to Drop Mid-Transaction?

• New credit applications — every hard inquiry can lower your score temporarily
• New accounts opened — new credit cards, car loans, or personal loans change your credit profile
• Large purchases on existing credit cards — increasing your utilization ratio can drop your score quickly
• Paying off or closing accounts — counterintuitively, paying off and closing a credit card can lower your score by reducing available credit or shortening your credit history
• Paying a collection — this sounds like the right thing to do, but paying a collection can sometimes cause your score to drop. Always discuss with your loan officer before paying any collection during a transaction
• Late payments — even one missed or late payment during the transaction can be damaging
• Balance increases on existing accounts — if your credit card balances rise, your utilization goes up and your score can go down

How to Protect Your Credit Score During a Mortgage Transaction

The goal is simple: keep your credit profile as stable as possible from the time your credit is pulled to the day your loan funds. Here’s what that looks like in practice:

• Do not apply for new credit — no credit cards, car loans, store financing, or any new accounts
• Do not make large purchases on existing credit cards — keep balances low and stable
• Do not pay off or close accounts without first discussing it with your loan officer
• Do not pay collections without checking with your loan officer first — the impact on your score may be the opposite of what you’d expect
• Continue making all payments on time — this one is non-negotiable
• Know when your credit report expires — ask your loan officer upfront so there are no surprises if the transaction extends

What to Do If Your Score Drops Mid-Transaction

Don’t panic — but don’t wait either. Contact your loan officer immediately. Here’s what needs to happen:

• Understand exactly how the score change affects your loan approval, rate, and mortgage insurance
• Find out whether the score drop is temporary or reflects a real change in your credit profile
• Ask whether rapid rescore options are available — in some cases a lender can submit documentation to the credit bureaus to have a score updated within a few business days
• Review whether switching to a different loan program might provide a better path forward

The earlier you flag the issue, the more options you have. A credit score drop in the final week before closing leaves very little room to maneuver. The same issue identified three weeks out is usually workable.

The Best Time to Review Your Credit Is Before the Transaction Starts

If you’re thinking about buying or refinancing in the next 6–12 months, meet with a mortgage professional before you’re under contract to review your credit and identify anything that could be improved — or that might cause issues during a transaction. A few months of proactive credit management before applying can make a meaningful difference in your rate and approval options.

If you’re already in a transaction and concerned about your credit, let’s talk — the sooner, the better.

Let’s Talk

Rhonda Porter is a Licensed Mortgage Advisor (NMLS #121324), serving home buyers and homeowners throughout Washington State.