Your credit score affects nearly every aspect of your financial life, from the interest rates you pay on loans to whether you can rent an apartment or get a job. Yet most people don’t understand how it works or what they can do to improve it. Understanding your credit score is the first step toward taking control of this powerful financial tool.

Your credit score is a three-digit number that represents your creditworthiness—essentially, how likely you are to repay borrowed money. It’s calculated based on several factors: payment history, amounts owed, length of credit history, new credit, and types of credit used. Payment history and amounts owed carry the most weight, accounting for about two-thirds of your score.

The most important factor is your payment history. Every on-time payment helps, and every late or missed payment hurts. This is why it’s crucial to pay all your bills on time, every time. Set up automatic payments or calendar reminders to ensure you never miss a due date. Even one late payment can significantly damage your score.

Credit utilization—the amount of credit you’re using compared to your total available credit—is the second most important factor. Ideally, you should keep your utilization below 30 percent. If you have a $10,000 credit limit, try to keep your balance below $3,000. Paying down balances and keeping them low will improve your score over time.

Length of credit history matters, which is why closing old accounts can actually hurt your score. Even if you’re not using a credit card, keeping it open (and paid off) can help your score. Don’t close accounts just because you’re not using them—especially your oldest accounts.

Improving your credit score takes time and patience. There are no quick fixes or magic solutions. Focus on the fundamentals: pay everything on time, keep balances low, and avoid opening too many new accounts at once. Check your credit report regularly for errors and dispute any inaccuracies immediately.

Your credit score isn’t a reflection of your worth as a person—it’s simply a tool that lenders use to assess risk. Understanding how it works gives you the power to improve it. Start by checking your credit report, then focus on the factors you can control. With time and consistent effort, you can build a credit score that opens doors instead of closing them.