Young adults in their 20s can damage their credit scores through seven avoidable mistakes that shape their financial future.

Payment history is the most important factor affecting your credit score. Missing a payment or paying after the due date hurts your profile, especially once a payment becomes 30 days overdue. Setting automatic payments or calendar reminders can help you pay at least the minimum amount by the due date, though paying the full balance is better.

Credit utilization measures the percentage of available credit you use. If your credit limit is $2,000 and your balance reaches $1,800, your utilization rate is 90%. Keeping this percentage below 30% maintains a healthier credit profile. High utilization makes lenders view you as someone who depends heavily on credit.

Applying for several credit cards within a short period creates unnecessary pressure. Each application triggers a hard inquiry, which can temporarily lower your credit score. Apply only when you have a genuine financial need rather than for rewards or introductory offers.

Closing an older credit card after getting a newer one with better rewards can reduce your total available credit and hurt your credit utilization. Older accounts also contribute to the length of your credit history. Before closing an account, consider its annual fees, benefits, and overall impact on your credit profile.

Review your credit report regularly for errors such as incorrect balances, unfamiliar accounts, or wrongly reported late payments. Dispute any inaccurate information with the relevant credit bureau.

Carrying a credit card balance month to month does not improve your credit score. You do not need to pay interest to build positive credit history. Carrying unpaid balances increases debt and makes monthly payments harder to manage.

Spending beyond your budget using credit card access creates financial problems. Prioritize essential expenses, build emergency savings, and make investment decisions based on available funds rather than borrowed money.

Under the FICO scoring model, 670-739 is considered good. Lenders generally view scores above 740 more favorably. Checking your own credit score is a soft inquiry and does not negatively affect your score.