Buying a house usually lowers your credit score in the short term and strengthens it over the long run. In the months around closing, a hard inquiry from the lender, a large new loan balance, and a younger average account age all pull your score down. Once the mortgage is in place and you start making payments on time, the single most heavily weighted part of your score — payment history — begins working in your favor. Within about a year, most buyers see their scores return to pre-purchase levels, and after several years of on-time payments, the score is often stronger than it was before the purchase.
Why Your Score Drops in the Short Term
Three things happen to your credit report when you buy a house, and each one pushes the score in the same direction.
First, the lender runs a hard inquiry to evaluate your application. A hard pull can temporarily lower your score by roughly five to ten points.1myFICO. How Soft vs Hard Pull Credit Inquiries Work Hard inquiries fall under the “new credit” category, which accounts for about 10% of your FICO score.2myFICO. How New Credit Impacts Your Credit Score FICO only factors in inquiries from the past 12 months, but the inquiries themselves stay on your report for two years.3Equifax. Hard Inquiry vs Soft Inquiry – Whats the Difference
Second, a six-figure loan appears on your report with a balance close to the full amount borrowed. The “amounts owed” category makes up 30% of your FICO score, and for installment loans it looks at how much you still owe compared with the original loan amount. A brand-new mortgage weighs against you in this part of the calculation and improves gradually as you pay down the principal.4myFICO. How Owing Money Can Impact Your Credit Score One piece of good news: a mortgage balance does not count toward your revolving credit utilization ratio, so taking on the loan will not make it look like you have maxed out your credit cards.5Experian. Can an Installment Loan Help Improve Your Credit Score
Third, the new account drags down the average age of your credit history, which accounts for about 15% of the FICO score.6FICO. FAQs About FICO Scores in the US A new mortgage enters your report with zero months of history. If you have a ten-year-old credit card and a five-year-old auto loan, your average age is seven and a half years; add the mortgage and that drops to about five. The effect is strongest for people with only a few existing accounts and fades as the mortgage ages.
Shopping Multiple Lenders Without Compounding the Hit
Scoring models expect you to compare offers before committing to a mortgage. FICO treats all mortgage-related hard inquiries made within a 45-day window as a single inquiry, and the Consumer Financial Protection Bureau confirms that the impact on your credit is the same no matter how many lenders you consult, provided the last credit check falls within 45 days of the first.7Consumer Financial Protection Bureau. What Happens When a Mortgage Lender Checks My Credit VantageScore uses a shorter 14-day window.8TransUnion. How Rate Shopping Can Impact Your Credit Score Cluster your applications into a two-week stretch and you stay safe under both models.
If you want to gauge your eligibility before formally applying, a pre-qualification typically involves only a soft inquiry, which has no effect on your score.9Experian. Hard Inquiry vs Soft Inquiry – Whats the Difference A full pre-approval usually requires a hard pull because the lender is verifying your finances more thoroughly.
What to Avoid Between Application and Closing
The period between your mortgage application and closing day is one of the most credit-sensitive windows you will experience. Lenders typically pull your credit a second time shortly before closing, and any changes to your financial profile during underwriting can cause problems or even derail the loan entirely.
During this window, avoid:
- Opening new credit accounts. A new credit card or auto loan adds another hard inquiry and a new account, both of which can lower your score at the worst possible moment.
- Making large purchases on credit. Running up existing card balances increases your revolving utilization ratio, which drags down the “amounts owed” portion of your score.
- Closing existing accounts. Shutting down a credit card reduces your total available credit, which raises your utilization ratio, and may also lower the average age of your accounts.
- Changing jobs or moving large sums of money. These do not directly affect your credit score, but they can complicate underwriting and delay or prevent closing.
Once you have signed the closing documents and confirmed the loan has been funded and disbursed, you can resume normal financial activity.
How Long Recovery Takes
Research on borrowers who took out mortgages suggests scores generally take close to a year to return to pre-purchase levels. The decline tends to bottom out around five to six months after closing, with recovery taking a similar amount of time.
You can speed the process by keeping credit card balances low, making every mortgage payment on time, and avoiding new credit applications in the months after closing.
The Long-Term Payoff
Once you start making payments, the mortgage becomes the single most influential item on your credit report over the long haul. Payment history makes up 35% of your FICO score, more than any other category.10myFICO. How Payment History Impacts Your Credit Score Mortgage servicers typically report your payment status to Equifax, Experian, and TransUnion once a month.11Experian. How Often Is a Credit Report Updated Each on-time payment reinforces your reliability and gradually pushes your score upward. A decade of perfect mortgage payments creates one of the strongest credit profiles a lender can see.
The loan also helps the “credit mix” category, which makes up about 10% of your FICO score. Scoring models favor borrowers who demonstrate the ability to manage different types of debt.12myFICO. Types of Credit and How They Affect Your FICO Score If your profile previously consisted only of credit cards, adding an installment loan like a mortgage can produce a modest positive boost in this category over time. The benefit is real but unlikely to be dramatic on its own.
What a Late Payment Costs
Most mortgages include a grace period of about 15 days after the due date, during which you can pay without incurring a late fee. The grace period and credit reporting run on different timelines, though. A servicer can report a payment as delinquent to the credit bureaus once it is more than 30 days past due.13Experian. Do Mortgages Have a Grace Period A payment made on day 20 may trigger a late fee but will not show up as a delinquency on your credit report.
Once a payment crosses the 30-day mark, the consequences become much steeper. A single late mortgage payment can drop your score by roughly 90 to 150 points depending on your starting score and the rest of your credit profile. Late payments remain on your credit report for up to seven years, though their influence on the score diminishes over time.14Consumer Financial Protection Bureau. How Long Does Information Stay on My Credit Report
If payments fall far enough behind to trigger foreclosure, the damage is severe. A foreclosure can reduce a FICO score by 85 to 160 points or more, with the largest drops hitting borrowers who had the highest scores before the foreclosure. A short sale, where the lender agrees to accept less than the remaining balance, carries a similar credit impact and also appears on the report as a settled account. Both remain on your credit report for seven years from the date of the first missed payment that led to the default.15Experian. Short Sale vs Foreclosure – Whats the Difference