Does Buying a Home Lower Your Credit Score Temporarily?

Yes, buying a home usually does lower your credit score, but only for a while. The dip comes from three scoring factors taking a hit at the same moment you close: a hard inquiry from the lender, a large new debt appearing on your report, and a drop in the average age of your accounts. Most buyers see their scores return to where they started within about a year, and a mortgage paid on time eventually becomes one of the strongest positives on the report.

Why the Score Drops at Closing

Three things happen to your credit file around the time you buy a home. Each one pulls the score in the same direction.

The Hard Inquiry

When you formally apply, the lender pulls your full report. Federal law limits who can request it and requires a valid reason such as evaluating a loan you applied for.¹ Each hard inquiry can lower your score by roughly five to ten points.² Inquiries stay visible for two years, but FICO only counts them in the score for the first twelve months.³

Comparison shopping doesn’t multiply the damage. FICO groups all mortgage-related inquiries made within a 45-day window into a single inquiry for scoring purposes. Quotes from two lenders or ten hit your score the same, as long as the pulls fall inside that window. The CFPB notes that even if shopping stretches past 45 days, the savings from a better rate usually outweigh the small effect of an extra inquiry.⁴

A Big New Balance

Amounts owed make up 30 percent of your FICO score, the second-largest factor.⁵ A brand-new mortgage shows up owing close to 100 percent of the original loan amount, since you haven’t made any principal payments yet. FICO’s model compares what you still owe on an installment loan to the original balance, so a fresh mortgage starts at the worst possible ratio.⁶

Installment debt is treated more gently than revolving debt. Credit card utilization tends to weigh more heavily in this category than the balance on an installment loan, and as you pay the mortgage down each month, the balance-to-original ratio drops and the drag on your score shrinks.⁶

A Younger Average Account Age

Length of credit history is 15 percent of the score, and the model looks at the age of your oldest account, the age of your newest, and the average across all of them.⁵ A new mortgage enters at age zero and drags that average down. If you had three accounts each ten years old, the average was ten years; add a mortgage and it drops to seven and a half. The effect is mechanical and reverses on its own as the new account ages.

One Factor That Can Help Right Away

Credit mix is 10 percent of your score and rewards you for managing different types of credit. If your file previously held only credit cards, or cards and a car loan, a mortgage adds a new category: a secured installment loan tied to real property.⁵ When the mortgage is your first installment loan, the diversification benefit can partially offset the hit from the inquiry and new debt. FICO also notes that you don’t need one of every account type for a good score.

How Long the Dip Lasts

Research tracking thousands of borrowers found that scores took roughly five months to reach their lowest point after closing, then another five months to climb back to where they started. That’s about eleven months from purchase to full recovery. The exact timeline depends on the rest of your credit profile, the size of the mortgage, and how consistently you pay.

Recovery is driven by payment history, which is 35 percent of the FICO score, the single biggest factor.⁷ Every on-time mortgage payment adds a positive data point. Over years, a well-managed mortgage lifts the same score it initially lowered, and typically higher than before.

Protecting Your Score Between Application and Closing

The window between applying and closing is the riskiest stretch for your credit. Your lender may pull your report again right before funding, and any negative change could delay the loan or push you into a worse rate.

Avoid new credit applications. Opening a card, financing furniture, or refinancing a car loan while your mortgage is in process adds hard inquiries and new debt, and even a small drop can trigger additional review.⁴
Keep your job stable. Lenders often verify employment twice, once at application and again just before closing. Switching jobs, especially to a different industry or a commission-based role, can pause or reopen the underwriting.
Document large deposits. Keep a paper trail for money moved between accounts or received as a down payment gift. Lenders are generally required to verify the source of funds, and unexplained deposits stall the process.⁸
Pay down existing balances. Lower credit card utilization before you apply, which helps both your score and your debt-to-income ratio.

Checking your own credit doesn’t count as a hard inquiry and won’t affect your score, so pulling your own report before you apply is a good way to catch errors before a lender sees them.⁴

A Later, Smaller Dip if Your Servicer Changes

After closing, your loan may be transferred to a different company that collects the payments. Most transfers have no effect on your credit. In some cases, though, the old account appears as paid off and closed while a new one opens with the transferred balance. That can produce a small temporary drop because the new account lowers your average account age, similar to what happened at closing. It corrects itself over time as long as no payments are missed during the transition.

1
Office of the Law Revision Counsel. 15 USC 1681b Permissible Purposes of Consumer Reports
2
myFICO. How Soft vs Hard Pull Credit Inquiries Work
3
myFICO. The Timing of Hard Credit Inquiries: When and Why They Matter
4
Consumer Financial Protection Bureau. What Happens When a Mortgage Lender Checks My Credit
5
myFICO. How Scores Are Calculated
6
myFICO. How Owing Money Can Impact Your Credit Score
7
myFICO. How Payment History Impacts Your Credit Score
8
Consumer Financial Protection Bureau. Submit Documents and Answer Requests From the Lender