How do I shop for a mortgage without hurting my credit?

FICO and VantageScore models treat multiple mortgage inquiries made within a 14-to-45 day window as a single inquiry, so rate shopping from several lenders in a short window has minimal credit impact. The right approach: pull your own credit first to know your score, get Loan Estimates from multiple lenders within a focused window, and avoid applying for other credit in the months before you close.

The biggest misconception about mortgage shopping is that comparing lenders will tank your credit score. It won't — if you do it correctly. The CFPB confirms that multiple mortgage inquiries within a focused window are treated as a single inquiry by major scoring models, making rate shopping essentially free from a credit-score standpoint.

How the inquiry deduplication window works

FICO models use a 45-day window: any mortgage-related hard inquiries within that period count as one. VantageScore uses a 14-day window. Both models also include a 30-day buffer — inquiries made in the 30 days before the score is calculated for a mortgage application are typically excluded from the score entirely. The practical implication: compress all your lender applications into two to three weeks and you will see at most one hard inquiry hit your score, typically reducing it by fewer than five points temporarily.

Steps to shop safely

Check your own credit first. Pull your free reports at annualcreditreport.com and your score through your bank or card issuer. Self-checks (soft pulls) never affect your score.
Dispute errors before you apply. Incorrect derogatory marks or wrong balances can drag your score down 20-50 points. File disputes at least 60 days before you plan to apply.
Get Loan Estimates from at least three lenders within the same two-week window. The CFPB's standardized Loan Estimate form makes lenders quote the same line items so you can compare rate, APR, points, and closing costs on equal terms.
Avoid opening new credit lines or closing old ones in the 3-6 months before closing. New accounts lower your average account age; closing cards raises your utilization.
Don't make large purchases on credit between application and closing. Lenders re-pull credit just before funding; new balances can change your DTI and trigger a re-underwriting.

What actually hurts your credit during the process

Shopping across different types of credit (mortgage, auto, card) in the same window — these are scored separately and each type counts.
Missing a payment on any existing account during the application period — even one 30-day late can reset lender risk tiers.
Applying for new credit (cards, personal loans) after mortgage application but before closing — this can change your DTI and potentially invalidate underwriting.

Mortgage shopping & credit facts

Multiple mortgage applications within a 45-day window are counted as a single inquiry under FICO scoring models. — CFPB — Does applying for a mortgage hurt my credit score?
A single hard inquiry typically reduces a credit score by fewer than five points and the effect fades within 12 months, according to CFPB guidance. — CFPB — Credit inquiries
Consumers are entitled to a free copy of their credit report from each of the three major bureaus once per year at AnnualCreditReport.com, per the Fair Credit Reporting Act. — CFPB — Free credit reports

Key takeaways

Compress all mortgage lender applications into a 14-day window to guarantee deduplication under both FICO and VantageScore — you will see at most one inquiry hit your score.
Pull your own credit reports and dispute any errors at least 60 days before applying; errors are common and their removal can meaningfully move your score.
Use the CFPB's standardized Loan Estimate to compare lenders on APR, total closing costs, and monthly payment — not rate alone.
Do not apply for new credit, make large credit purchases, or close old accounts between application and closing day.
One hard inquiry from mortgage shopping is a negligible, temporary score dip — it should never stop you from getting competing offers.