Most people know they should protect their credit score, but far fewer know exactly what damages it. Understanding what hurts your score is genuinely empowering, because nearly all of it is within your control, and avoiding a handful of specific mistakes protects the number that quietly shapes your access to loans, cards, and good interest rates. This guide from The Finance Reveal explains what hurts your credit score, building on our guides to how credit scores work and improving your credit score in the wider Credit Score section. This is general education, not financial advice.

The Biggest Culprit: Missed and Late Payments

By far the most damaging thing you can do to your credit score is to pay late or miss payments altogether. Payment history is one of the most heavily weighted factors in how scores are calculated, so a record of paying on time is the single strongest foundation, and a missed payment is correspondingly one of the biggest negatives. A payment that becomes significantly overdue, or an account that goes into default or collections, can weigh on your score for a long time.

This is why the most important credit habit is simply paying at least the minimum on every account by its due date, every time. Because payment history carries so much weight, protecting it does more for your score than almost anything else, which is the flip side of the advice our guide to improving your credit score gives. If you struggle to remember due dates, automating at least the minimum payment is one of the most protective moves you can make.

Other Common Ways People Damage Their Score

Beyond missed payments, several other behaviors reliably drag a score down. The table below summarizes the main ones.

High credit utilization, using a large share of your available credit limit, is a major factor, since carrying balances close to your limits signals risk even if you pay on time, the number our guide to credit limit and utilization explains. Applying for a lot of new credit in a short period through many separate applications can also weigh on your score, since a flurry of unrelated applications suggests you may be under financial pressure, a nuance our guide to hard versus soft inquiries clarifies. And serious negative events, such as defaulting on a loan, having an account sent to collections, or other major derogatory marks, can damage your score substantially and stay on your record for a long time, which is part of the broader relationship our guide to how debt affects your credit score describes.

Subtle Mistakes and How to Avoid Them

Some score damage comes from less obvious sources. Errors on your credit report, such as accounts that are not yours or payments wrongly marked late, can unfairly lower your score, which is why checking your report and correcting mistakes matters, the habit our guide to reading your credit report builds. Closing old credit accounts can sometimes hurt too, because it may reduce your available credit and shorten the length of your credit history, a subtlety our guide to whether closing a card hurts your score explores. Even something as simple as not using credit at all can leave you with too little history for a strong score.

The reassuring theme is that nearly everything that hurts your credit is avoidable with a few consistent habits: pay on time, keep your balances low relative to your limits, apply for new credit only when you genuinely need it, keep useful old accounts open, and check your report periodically for errors. Because credit scoring systems differ by country, the exact weightings and rules vary, but these fundamentals hold widely. Understanding what damages a score is really just the mirror image of knowing how to protect one, and the same handful of behaviors that avoid harm are the ones that steadily build a strong score over time.

Frequently Asked Questions

What hurts your credit score the most?

Late or missed payments are typically the most damaging, because payment history is one of the most heavily weighted factors. An account that becomes seriously overdue, defaults, or goes to collections can weigh on your score for a long time. This is why paying at least the minimum on every account by its due date is the single most protective credit habit.

Does high credit utilization lower your score?

Yes. Using a large share of your available credit limit, known as high utilization, is a major negative factor, because carrying balances close to your limits signals risk even if you pay on time. Keeping your balances low relative to your limits helps protect your score, which is one of the more controllable ways to influence it from month to month.

Do too many credit applications hurt your score?

They can, when there are many scattered applications for different types of credit in a short period, since that pattern suggests financial pressure. However, multiple inquiries for the same loan within a short shopping window are often grouped as one. It is a flurry of unrelated applications, rather than occasional purposeful ones, that tends to weigh on your score.

Can errors on my credit report lower my score?

Yes. Mistakes such as accounts that are not yours or payments wrongly recorded as late can unfairly lower your score. This is why checking your credit report periodically and disputing any errors you find is important, since a mistake you never notice could quietly cost you a better rate or an approval. Catching and correcting errors protects your score at no cost.

The Bottom Line

Knowing what hurts your credit score is empowering because nearly all of it is within your control. The single biggest culprit is late or missed payments, since payment history is one of the most heavily weighted factors, so paying at least the minimum on every account by its due date is the most protective habit you have. Beyond that, high credit utilization drags scores down by signaling risk when you carry balances close to your limits, a scattering of unrelated credit applications in a short time suggests financial pressure, and serious negatives like defaults and collections can damage your score substantially and linger for years. Subtler harms include errors on your credit report that you never catch, closing old accounts in a way that shortens your history or cuts your available credit, and even having too little credit history to score well. The reassuring flip side is that almost everything damaging is avoidable with the same few habits: pay on time, keep balances low, apply for credit only when you need it, keep useful old accounts open, and review your report for errors. Because credit systems vary by country, the exact rules differ, but these fundamentals hold broadly, and knowing what to avoid is simply the mirror image of knowing how to build a strong score. For more, see our guides to improving your credit score, credit limit and utilization, and reading your credit report, and explore the full Credit Score section. This article is general information, not personalized financial advice, and credit scoring works differently by country.