When Your Credit Score Drops During a Mortgage Transaction

One of the most stressful calls I get from buyers in the middle of a transaction goes something like this: their loan officer has just told them their credit score dropped — and now their approval, their rate, or their private mortgage insurance eligibility is in question. Closings have been delayed, and in some cases derailed, because of a score change that the buyer didn’t see coming.

Here’s what you need to know about why credit scores drop during a mortgage transaction, what happens when they do, and how to protect yourself.

Why Credit Scores Change During a Transaction

Your credit score is not a fixed number — it’s a snapshot calculated at a specific point in time based on what’s currently on your credit report. Between your preapproval and your closing date, your score can move up or down based on activity happening in the background, even if you haven’t done anything intentional.

Common reasons a score drops mid-transaction:

• New balances or charge-ups. If you’ve used a credit card during the transaction and the new balance has been reported to the bureaus, your utilization rate increases — and your score can drop, sometimes significantly.
• A new account or inquiry. Opening any new credit — a store card, a car loan, a buy-now-pay-later plan — creates a hard inquiry and a new account, both of which can lower your score.
• A payment reported late. Even a single 30-day late payment can cause a dramatic score drop. Stay current on everything during your transaction.
• Paying off or closing an account. Counterintuitively, paying off a collection or closing a paid-off card can sometimes lower your score by changing your utilization ratio or removing an established tradeline.
• The credit report expiring and being refreshed. Mortgage credit reports are valid for 90 days. If your report expires before closing and needs to be refreshed, the new report reflects your current scores — which may be different from what was originally pulled, for better or worse.

What Happens When Your Score Drops

The impact depends on how much your score dropped and where it lands relative to key pricing and program thresholds.

For conventional loans, Fannie Mae and Freddie Mac price loans based on credit score tiers. The key thresholds are 680, 700, 720, and 740. If your score drops across one of these tiers — say from 721 to 719 — your rate or closing costs may increase. Your loan officer will need to re-run pricing and potentially issue a revised Loan Estimate.

For FHA loans, the minimum qualifying score is 580 for 3.5% down. If your score drops below that threshold mid-transaction, your loan structure may need to change — requiring a larger down payment or a different program entirely.

For VA loans, there are no score-based pricing adjustments — one of the program’s significant advantages. A score drop mid-transaction is less likely to affect your rate. However, lenders still have their own minimum score requirements (typically 580–620), and if your score drops below your lender’s overlay, your approval could still be at risk. Contact your loan officer immediately if your score has changed.

For private mortgage insurance (PMI), some MI companies have their own score requirements that are separate from the lender’s. A score drop can affect PMI eligibility or pricing even when the loan itself still qualifies.

In any scenario, if your score has changed and a soft pull or refreshed credit report reveals it, your loan file will need to go back through underwriting to evaluate the impact. This takes time — which is why score drops discovered late in a transaction are so disruptive.

What to Do If Your Score Drops Mid-Transaction

If your loan officer tells you your score has dropped, take action immediately — don’t wait to see how it plays out.

• Find out exactly what changed. Ask your loan officer to pull the updated report and identify what triggered the drop. Understanding the cause tells you whether it’s fixable before closing.
• Ask about rapid rescore. If the drop was caused by an error or a balance that has since been paid down, a rapid rescore can update the bureau data and recalculate your score within a few business days — faster than waiting for the normal reporting cycle. Not every situation qualifies, but it’s worth asking.
• Get a revised rate quote. If the drop affects your pricing tier, ask for updated numbers so you know exactly where you stand.
• Don’t make any more changes. Once a score drop has been identified, freeze all credit activity. No new purchases, no paying things off, nothing — until you’ve talked to your loan officer.

How to Prevent a Score Drop in the First Place

The best protection is knowing what not to do between preapproval and closing. Most mid-transaction score drops are preventable.

• Do not open any new credit accounts — cards, car loans, financing plans, or anything else
• Do not make large purchases on existing credit cards
• Do not pay off or close accounts without first checking with your loan officer
• Do not pay off collections without talking to your loan officer first — this can reactivate the account and temporarily drop your score
• Do not co-sign for anyone else’s loan
• Make every payment on time — on every account, without exception
• Know when your credit report expires (90 days from the original pull) and flag it with your loan officer if closing is approaching that window

For a full breakdown of when and how your credit is pulled during the mortgage process, see How Many Times Will Your Credit Be Pulled During a Mortgage Transaction?

The Best Time to Review Your Credit Is Before You Start

Ideally, you’re reviewing your credit profile with a mortgage professional well before you find a home — not scrambling to fix something after you’re already in contract. A pre-application credit review gives you time to address issues, understand your score relative to key pricing thresholds, and avoid surprises mid-transaction.

For a complete guide to credit and mortgage qualifying in Washington State, visit my Credit & Mortgage Guide for Washington State Homebuyers & Homeowners.

If you have questions about your credit or are preparing to buy or refinance a home in Washington State, let’s talk.