
Gerri Detweiler
Education Consultant, Nav

Editorial note: Our top priority is to give you the best financial information for your business. Nav may receive compensation from our partners, but that doesn’t affect our editors’ opinions or recommendations. Our partners cannot pay for favorable reviews. All content is accurate to the best of our knowledge when posted.
Credit repair often takes time, but there’s one way to potentially change your credit scores dramatically—in as little as a month. It’s called “debt utilization,” and when used correctly, it may improve your credit scores.
When Calvin first started tracking his credit scores with Nav, for example, he was struck by how much his personal credit score would fluctuate from month to month. In the first four months he monitored it, his score went up 52 points, down 42 points then back up again by 46 points. (All of these changes were in relation to his original credit score.) He wasn’t doing anything crazy like opening a bunch of new cards to earn credit card rewards, nor had he paid anything late. It seemed his credit scores were moving in conjunction with one major factor: his credit card balances.
Calvin saw firsthand how a factor called “debt usage” or “utilization” can quickly increase — or lower — credit scores.
For example, here’s what happened to Calvin’s scores as his utilization changed:

Debt usage compares balances to credit limits on revolving accounts, mainly credit cards but also on lines of credit.
Let’s say you have a credit card account with a credit limit of $1,000, and your card issuer reports to the credit bureau that your balance is $500. Your debt usage ratio is 50%. If instead your reported balance is $200, your debt usage ratio is 20%.There is no perfect debt usage ratio, but generally lower is better (except 0%) and once it starts creeping above 20-25%, you may start to see it impact your credit scores. Some consumers find that paying down high-balance credit cards (reducing debt usage) can improve their credit scores quickly.
Debt usage is calculated both on individual revolving accounts and in the aggregate (the total of all credit limits on open accounts compared to the total of all revolving balances). Notice in Calvin’s example there is a figure for total debt usage. In September it drops by 7 percentage points and his scores jump considerably. In October it’s higher, and his score is closer to the original score.
But those relatively small changes in his overall debt usage probably aren’t driving those big swings. Instead, what’s more interesting here is the debt on his two credit cards. In October, his debt usage on his first credit card jumped to 79%. That’s considered very high and his credit score drops quite a bit that month. It’s lower in September (56%) and his score is much better.It’s worth noting that a debt usage ratio of 56% is still on the high side. If it were lower, he may have had an even better score, though other factors such as age of credit, payment history, credit mix and applications for new credit impact scores as well.
Set your foundation for growth
You'll need more than a score to grow your business with credit and financing — sign up for Nav Prime to unlock credit and cash flow monitoring, credit building tools, and matched services like bank accounts and business formation.
If you learn that your credit utilization ratio is affecting your credit scores, here are some strategies that may help to bring that number down:
A few things to keep in mind if you are working on debt usage:
Debt utilization is just one of the major factors that can help you build good credit scores. The other major credit score factors are:
Payment history. Late payments or other negative information will hurt your credit scores. On-time payments, of course, can improve your credit, whether you’re trying to build credit or rebuild bad credit.
Credit inquiries & new accounts. Opening new accounts can increase your overall credit limits (a plus) but there will be a hard inquiry that can temporarily lower your credit scores. It’s fine to get a new credit card you really want, but understand that you may see a temporary dip in your scores.
Age of credit: This refers to how long you’ve had credit accounts listed on your credit file. Overall, an older credit history is better than a shorter one. Individuals with a relatively new credit history may benefit from becoming an authorized user on another person’s credit card, if it has a long reporting history with no missed payments and low utilization.
Types of credit. You’ll generally score better for this factor if you have a mix of different types of credit accounts (installment versus revolving).
It’s OK to show no balances on any of your credit cards from time to time, but if your credit report consistently lists a 0% credit utilization rate you may not get as high a credit score as you would otherwise. Remember, this doesn’t mean you have to carry debt. Most credit card companies report balances at the statement closing date, not after you make your payment.
No, credit usage is not the same as a debt-to-income ratio (DTI). The latter compares your monthly payments on debts to your income. Credit reports don’t have information about your income so they cannot calculate DTI.
There’s no specific debt utilization ratio that’s considered “perfect.” It depends in part on other items on your credit reports, such as the average age of all accounts and the types of credit used. FICO says that consumers with excellent credit scores tend to use 10% or less of their available credit, on average. But you may find that you can use 20% or more without noticing an effect for this factor.
You’ll need to get a copy of your credit report to understand your utilization. You can get free credit reports from the three major credit bureaus, Equifax, Experian and TransUnion, at AnnualCreditReport.com. In addition, there are 138+ places to get free credit scores (including both free VantageScore credit scores and free FICO scores).
Nav is the only source for business credit scores along with personal credit scores.
Look at each credit card account and note the balance and the credit limit. To calculate utilization simply divide the balance listed by the credit limit then multiple the result by 100. For example:
Balance: 200 ➗1000 (credit limit) = .20 x 100 = 20%.
Access better funding options with a solution you can’t get anywhere else
Improve your business’s financial health profile, unlock better financing options, and get funded — only at Nav.
Build your foundation with Nav Prime
Options for new businesses are often limited. The first years focus on building your profile and progressing.
Get the Main Street Makers newsletter
This article currently has 20 ratings with an average of 5 stars.

Education Consultant, Nav
Gerri Detweiler has spent more than 30 years helping people make sense of credit and financing, with a special focus on helping small business owners. As an Education Consultant for Nav, she guides entrepreneurs in building strong business credit and understanding how it can open doors for growth.
Gerri has answered thousands of credit questions online, written or coauthored six books — including Finance Your Own Business: Get on the Financing Fast Track — and has been interviewed in thousands of media stories as a trusted credit expert. Through her widely syndicated articles, webinars for organizations like SCORE and Small Business Development Centers, as well as educational videos, she makes complex financial topics clear and practical, empowering business owners to take control of their credit and grow healthier companies.