How Taking Out a Loan Affects Your Credit Score

Key Takeaways

Applying for a loan triggers a hard inquiry, which can lower your score by 5–10 points temporarily.
A new loan reduces your average account age, another short-term negative.
Consistent on-time payments are the most powerful way a loan can improve your score over time.
Adding an installment loan improves your credit mix, which makes up 10% of your FICO score.
Paying off a loan can cause a small, temporary score drop because it closes an active account.

Taking out a personal loan has a layered effect on your credit score — some impacts are immediate and negative, others are delayed and positive. Understanding the full timeline helps you time your borrowing strategically and avoid being surprised when your score moves in unexpected directions.

Stage 1: Applying (The Hard Inquiry)

When you formally apply for a personal loan, the lender pulls your credit report with a "hard inquiry." This is visible to other lenders and has a measurable impact on your score.

A single hard inquiry typically reduces your FICO score by 5–10 points.
The effect is temporary — most hard inquiries stop affecting your score meaningfully within 12 months and fall off your report entirely after two years.
Multiple hard inquiries in a short period (for the same type of loan) are often treated as a single inquiry by FICO, recognizing that you are rate-shopping. This "de-duplication window" is 14–45 days depending on the FICO version.

To minimize hard inquiry damage, use pre-qualification tools first. Pre-qualification uses a soft inquiry (no score impact) to show you likely rates before you formally apply. See our guide on hard vs. soft credit inquiries for the full breakdown.

Stage 2: Opening the Account

Once approved and the loan is opened, two additional effects kick in:

Reduction in Average Account Age

The length of your credit history makes up 15% of your FICO score. Opening a new account reduces your average account age across all open accounts. If you have a 7-year-old credit card and open a new loan, your average account age drops. The older your existing accounts, the smaller this effect. For borrowers with thin credit files, this impact can be more noticeable.

New Account Classification

FICO's "New Credit" category (10% of your score) penalizes recently opened accounts modestly. A new account signals that you are taking on new debt, which lenders view as slightly elevated risk in the short term.

Short-Term vs. Long-Term Credit Impact

Timeframe	What Happens	Net Score Impact
At application	Hard inquiry recorded	-5 to -10 points
Month 1–3	New account lowers avg. age; new credit category flagged	-5 to -15 points total
Month 6–12	On-time payments begin building positive history	Neutral to +10 points
Year 1–2	Consistent payments significantly outweigh initial dips	+20 to +40 points possible
Loan payoff	Account closes; minor drop from reduced mix	-5 to -10 points (temporary)

Stage 3: Repayment (Where the Real Credit Building Happens)

Payment history is the largest component of your FICO score at 35%. Every on-time monthly payment on an installment loan is recorded and adds to your positive payment history. Over 12–24 months of consistent payments, the cumulative positive effect of a personal loan easily outweighs the initial hard inquiry and account-age reduction.

This is why credit-builder loans — small loans designed specifically to establish payment history — are so effective for people with thin credit files. The loan mechanics are the same; the intent is just more explicit. See our guide on credit-builder loans for more detail.

The Credit Mix Benefit

If you previously had only credit cards (revolving credit), adding a personal loan (installment credit) improves your credit mix — a factor worth 10% of your FICO score. Lenders like to see that you can manage different types of debt responsibly. This benefit is modest but real, especially for borrowers trying to round out a thin credit profile.

For a deeper understanding of this distinction, see our guide on installment loans vs. revolving credit.

What Happens When You Pay Off a Loan

Counterintuitively, paying off a loan can cause a small, temporary score drop. When the account closes:

Your credit mix may become less diverse
The account's positive payment history remains on your report for 10 years, but the account is no longer "active"
Your total number of open accounts decreases

This drop is usually 5–10 points and is temporary. Do not let the fear of this minor dip discourage you from paying off debt — eliminating interest expense is almost always the right financial decision.

The biggest credit score benefit from a personal loan is not opening it — it is paying it on time, every month, for the life of the loan.

Bottom Line

A personal loan will initially nudge your credit score down slightly. Within 6–12 months of responsible repayment, however, the loan becomes a net positive for your credit profile. The math works in your favor as long as you make every payment on time. If you are concerned about your score before a major application (mortgage, car loan), consider timing your personal loan at least 6–12 months in advance.