Refinancing swaps an existing loan for a new one on different terms. That swap changes your credit file, and your score can slip a little at first. The sources reviewed here describe the dip as small and temporary, though none of them give a firm number.

What changes on your report

Two things happen almost at once. A lender pulls your report, and a new account replaces an old one. Here is the order most borrowers see it in.

  1. The inquiry: the lender checks your file, which is recorded as a hard inquiry and can trim a few points.
  2. The turnover: the original loan is paid off while the new balance is reported as a fresh account.
Close view of hands sorting plain envelopes on a sofa cushion in soft morning light, with a mug of tea nearby.
Sorting the paperwork one envelope at a time. Loan terms are easier to review calmly, and the score effects are usually small and temporary.
  1. The age adjustment: a newly opened account can pull down the average age of your accounts.
  2. The rebound: regular, on-time payments on the new loan build a fresh payment record over the following months.

The sources do not give a specific point range for any of these steps. The size of the shift depends on the rest of your file.

Why a refinance can lower your score at first

When you submit a full application, the lender reviews your credit history. Each time a creditor pulls your report for a new credit line, it is recorded as a hard inquiry, and that can lower your score slightly. Applying to refinance usually triggers one.

The new account matters too. Refinancing a car, for example, means you apply for a new auto loan and use it to pay off the old one. That resets the age of the debt. Length of credit history makes up about 15% of a FICO-style score, so a refinanced loan that resets account age may have a proportional effect. A loan you held for three years is replaced by one opened this month, and the average age of your accounts shifts.

Replacing one auto loan with another may change your credit mix very little. But a newly reported loan can read as more debt, at least until payments start showing up on the file.

Why the effect often fades

The sources describe the drop as short-lived. One lender-side guide says people generally lose only a few points from the final refinance application, and many see their credit rebound within several months, depending on how the borrower handles the debt. Another notes that the score could rebound with timely, regular payments on the new loan.

Hard inquiries do not vanish right away. According to one credit bureau's consumer guidance, they can stay on a report for up to two years, but the effect on the score generally lasts a shorter period. The guidance does not say exactly how long. How long a dip lasts for any one borrower is also not covered.

There is a longer-term upside as well. Refinancing can help a score over time if it lowers your debt-to-income ratio or makes payments easier to keep up with. Lower monthly payments or a faster payoff can both play that role.

How to limit the impact before you apply

Start with a rate check. Some lenders offer prequalification or rate estimates that show as a soft pull rather than a hard pull. Ask before you submit anything. A rate estimate that does not touch your score lets you compare terms before you commit to a full application.

Keep other credit requests out of the same window. Multiple applications over a short period can lower a score more than a single one. Holding off on new cards or a mortgage application around the time you refinance is the simple fix.

Think about a cosigner too. If you refinance with one, the lender also pulls the cosigner's credit report. That person's file takes the inquiry as well, so they should know before you apply.

Questions to ask and signs to watch for

Put three questions to the lender. Does it use a soft pull for rate estimates, and does the final application differ? Will it pull a cosigner's report? How will the new loan be reported to the credit bureaus?

A lender that will not say whether its prequalification uses a hard or soft pull leaves you unable to judge the score impact. Treat that as a warning sign. Several new credit applications in a short span can compound the dip, so be wary of any process that nudges you toward extra products.

Also weigh whether the new terms fit your budget. A lower rate, a different term, or smaller monthly payments can each justify the small score cost, but only you can judge that. The sources do not say whether closing the old loan affects your score in a specific way, and they do not cover disputing errors after a refinance. They also offer no personal financial advice. For regulator guidance on credit reporting and your rights, the Consumer Financial Protection Bureau and the Federal Trade Commission publish consumer resources. Outcomes vary by credit file, so none can be guaranteed.

Please seek a professional. This article is general information, not financial, tax or insurance advice. Please seek a licensed financial, tax or insurance professional about your own situation.