Credit Utilization Calculator
Calculate how much you need to pay down to reach your target credit utilization rate. Credit bureaus recommend keeping utilization below 30% to protect your credit score.
Last updated: September 2026
Formula below · 2 sources (CFPB, Wikipedia) · Updated Sep 2026
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About this calculator
Credit utilization is the percentage of your available revolving credit that you are currently using, and it is the largest part of the "amounts owed" category, about 30% of a FICO score. Overall utilization = (totalBalance / totalCreditLimit) × 100. Credit bureaus also evaluate per-card utilization, so a single maxed-out card can hurt your score even if your overall ratio is low. This calculator computes the amount you must pay down to meet your target utilization rate using: paydownNeeded = MAX(0, totalBalance − totalCreditLimit × targetUtilization / 100, highestCardBalance − highestCardLimit × targetUtilization / 100). Every dollar paid off your highest card also lowers your overall balance, so paying that card first meets both goals at once and the amount needed is the larger of the two shortfalls, not their sum. Reducing utilization is one of the fastest ways to raise your credit score because bureaus re-report balances every billing cycle. Keeping both overall and per-card utilization below 30% — ideally below 10% — signals responsible credit management.
How to use
Suppose your total credit limit is $20,000 and your total balance is $7,000. Your highest individual card has a $5,000 limit and a $2,500 balance. Your target utilization is 30%. Overall paydown needed = MAX(0, $7,000 − ($20,000 × 0.30)) = MAX(0, $7,000 − $6,000) = $1,000. Per-card paydown = MAX(0, $2,500 − ($5,000 × 0.30)) = MAX(0, $2,500 − $1,500) = $1,000. Paying $1,000 toward the highest card fixes both at once, so the amount to pay down is MAX($1,000, $1,000) = $1,000. With the default inputs ($7,500 of $25,000 overall and $4,200 of $10,000 on one card) a 10% target needs $5,000, at least $3,200 of it on that card.
Frequently asked questions
What credit utilization rate should I aim for to maximize my credit score?
Staying below 30% is widely cited as the standard guideline, but scoring data consistently shows that people with the highest FICO scores keep utilization below 10%. The relationship is continuous — lower is better up to a point. Having 0% utilization (no balances at all) can actually be slightly less optimal than having very low utilization, since lenders like to see active, managed use of credit. Aim for 1–9% if maximizing your score is the goal.
How quickly does paying down credit card balances improve my credit score?
Your credit score can improve within a single billing cycle once a lower balance is reported to the credit bureaus, which typically happens when your statement closes. Most issuers report monthly, so you could see a score change in as little as 30–45 days after paying down a balance. The improvement can be substantial — dropping from 80% to 20% utilization can raise a score by 50–100 points depending on other factors in your profile.
Does closing a credit card improve or hurt my credit utilization ratio?
Closing a credit card almost always hurts your utilization ratio because it removes available credit from your total limit without reducing your balances. For example, closing a card with a $5,000 limit raises your utilization on remaining cards immediately. It can also shorten your average account age and reduce your credit mix. Unless the card carries a fee you cannot justify, keeping it open with a zero or low balance is generally better for your credit health.