How Is Credit Utilization Calculated? (2026 Formula)
Sum every revolving balance, divide by the sum of every revolving limit, multiply by 100. The result is your aggregate utilization percentage.
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How Credit Utilization Is Calculated: the Exact Formula
Reviewed by CC Payoff Calc Editorial Team. Last verified May 13, 2026.
Credit utilization is calculated by dividing the sum of your credit card balances by the sum of your credit card limits, then multiplying by 100 to get a percentage. Total utilization = (total revolving balance / total revolving credit limit) x 100. Per-card utilization = (this card’s balance / this card’s limit) x 100. FICO 8 reads both. The balances used are statement-date balances reported to the bureaus, not real-time issuer balances. Only revolving credit (credit cards, retail cards, HELOC) counts; installment loans (mortgage, auto, student loan) are excluded. Charge cards with no preset spending limit are typically excluded from the standard formula because they lack a fixed denominator.
Plan
The two formulas FICO 8 actually uses
FICO 8 reads two utilization measures from your bureau file on every pull. Both follow the same balance-divided-by-limit structure but apply at different scopes. The official FICO scoring methodology describes the amounts-owed factor (30 percent of FICO 8) as evaluating both aggregate and individual utilization.
Formula 1: Total (aggregate) utilization
Total utilization (percent) = (sum of all credit card balances) / (sum of all credit card limits) * 100
This is one number that summarizes the entire revolving portfolio on the file. Lower is better, with an optimum of 1 to 9 percent.
Formula 2: Per-card (individual) utilization
Per-card utilization (percent) = (this card's balance) / (this card's credit limit) * 100
This is one number per open revolving account. FICO 8 watches the highest individual utilization on the file and applies a separate penalty when it exceeds approximately 30 percent.
The Experian explainer on credit utilization rate confirms FICO 8 uses both measures and that both follow the standard balance-over-limit structure.
What goes into the numerator (balances)
The numerator of the utilization formula is the statement-date balance reported by each card issuer to the bureaus. The CFPB explainer on the difference between the statement date and the due date describes how issuers report the balance captured on each card’s statement closing date, typically 2 to 5 days after the statement closes.
What counts in the balance:
- The total amount owed on the card as of statement close
- New purchases that posted during the cycle
- Interest charges (if any) from the prior cycle
- Fees (annual, late payment, balance transfer) charged during the cycle
- Cash advances drawn during the cycle
What does NOT count in the balance:
- Pending transactions that have not posted by statement close
- Payments that posted after the statement close (these affect the NEXT statement)
- Authorized charges that have not yet cleared
The balance used is the snapshot at the statement closing moment. The Equifax explainer on credit utilization confirms the bureau records the statement-date balance as the input.
What goes into the denominator (limits)
The denominator is the credit limit on each open revolving account, as reported by the issuer to the bureau. Most major issuers report the assigned credit limit on each card. The TransUnion explainer on credit utilization describes the limit-reporting cadence.
What counts as the limit:
- The official credit limit on the account (the maximum approved revolving line)
- Recent credit limit increases (CLIs), once reported by the issuer
- HELOC credit limits (revolving home equity lines)
What does NOT count as the limit:
- Any over-limit accommodation the issuer may extend (not part of the official limit)
- Installment loan original amounts (not revolving)
- Charge card “highest balance ever” if reported as a synthetic limit (see the next subsection)
Charge cards: the no-preset-limit exception
Charge cards without a preset spending limit are the gray area. American Express Green, Gold, and Platinum charge variants (the traditional “pay in full” cards) often report to bureaus as “no preset spending limit” accounts.
The CFPB explainer on charge cards explains the structural difference between revolving credit cards and charge cards. Charge cards expect the full balance paid each cycle and have no fixed credit ceiling.
How charge cards are handled in utilization:
- Most commonly: excluded from the standard utilization formula entirely
- Sometimes: FICO 8 uses the highest balance ever reported as a synthetic limit
- Credit-monitoring apps may show inconsistent readings on charge card utilization
If you carry a $5,000 balance on a charge card with no preset limit, that $5,000 does not push your utilization up the way it would on a $5,000-limit Visa.
Calculator
Step-by-step worked example
Use the pillar payoff calculator to model balance reductions, then apply this calculation method to verify your utilization figure.
File with 6 revolving accounts
| Account | Account type | Balance | Limit |
|---|---|---|---|
| Chase Sapphire Preferred | Revolving | $1,500 | $15,000 |
| Discover It | Revolving | $400 | $8,000 |
| Capital One Quicksilver | Revolving | $0 | $6,000 |
| American Express Blue Cash | Revolving | $1,200 | $10,000 |
| Macy’s store card | Revolving | $250 | $1,500 |
| Bank of America HELOC | Revolving | $0 | $30,000 |
| Mortgage | Installment | $215,000 | N/A (installment) |
| Auto loan | Installment | $14,000 | N/A (installment) |
Step 1: identify revolving accounts only. Exclude the mortgage and auto loan from the calculation. They are installment, not revolving.
Step 2: sum the revolving balances.
$1,500 + $400 + $0 + $1,200 + $250 + $0 = $3,350
Step 3: sum the revolving limits.
$15,000 + $8,000 + $6,000 + $10,000 + $1,500 + $30,000 = $70,500
Step 4: compute aggregate utilization.
$3,350 / $70,500 = 0.0475 = 4.75 percent aggregate utilization
Step 5: compute per-card utilization for each account.
| Account | Balance | Limit | Per-card utilization |
|---|---|---|---|
| Chase Sapphire Preferred | $1,500 | $15,000 | 10 percent |
| Discover It | $400 | $8,000 | 5 percent |
| Capital One Quicksilver | $0 | $6,000 | 0 percent |
| American Express Blue Cash | $1,200 | $10,000 | 12 percent |
| Macy’s store card | $250 | $1,500 | 17 percent |
| Bank of America HELOC | $0 | $30,000 | 0 percent |
Step 6: identify the highest per-card. Macy’s at 17 percent.
Score interpretation. Aggregate utilization is 4.75 percent, which is in the optimal 1 to 9 percent band. Highest per-card is 17 percent, which is in the “very good” band. No per-card penalty fires. Expected FICO 8 contribution from utilization: near maximum (no drag).
How different files produce different aggregate readings
| File composition | Total balance | Total limit | Aggregate utilization |
|---|---|---|---|
| Single card, $500 balance, $5,000 limit | $500 | $5,000 | 10 percent |
| 5 cards, $100 each, $5,000 each limit | $500 | $25,000 | 2 percent |
| 1 card maxed, 4 cards at $0, all $5,000 limit | $5,000 | $25,000 | 20 percent |
| 5 cards, $1,000 each, $5,000 each limit | $5,000 | $25,000 | 20 percent |
Same total balance ($500 or $5,000) produces different aggregate utilization depending on the number and limits of cards. More cards with higher combined limit lowers aggregate utilization at the same balance.
Bureau-by-bureau computation
Each bureau (Equifax, Experian, TransUnion) computes aggregate utilization from its own file. They do not share results. If a card reports to only Experian, that account appears in Experian’s aggregate but not in Equifax’s or TransUnion’s. The AnnualCreditReport.com free reports show which accounts each bureau has on file.
Example. You have 6 cards. Card 1 reports to all three bureaus. Cards 2 to 5 report to all three. Card 6 reports only to Experian.
- Equifax aggregate utilization: based on Cards 1 to 5 (limit and balance)
- Experian aggregate utilization: based on Cards 1 to 6 (different denominator)
- TransUnion aggregate utilization: based on Cards 1 to 5
Aggregate utilization on Experian is typically lower because the extra Card 6’s limit is in the denominator (assuming it has a low balance).
Strategies
How to calculate your own utilization correctly
1. Pull all three free credit reports from AnnualCreditReport.com. This shows every open account on each bureau’s file. Look for the most recent reported balance and the current credit limit on each revolving account.
2. List the revolving accounts only. Credit cards (Visa, Mastercard, Discover, Amex), retail store cards, gas station cards, HELOC, and personal lines of credit count. Exclude mortgage, auto loan, student loan, personal loan, and 401(k) loan.
3. Use the statement-date balance, not your current online portal balance. The statement-date balance is what the bureau has on file and what FICO 8 reads. Your online portal may show a different (more recent) balance from purchases after the last statement.
4. Compute per-card AND aggregate. Per-card finds the maxed individual outlier. Aggregate gives the file-wide picture. Both matter for score.
5. Compare across bureaus. Pull each bureau’s report. Aggregate utilization can differ slightly because each bureau has its own account list. Some lenders pull only one bureau; others pull all three. For mortgages, FICO 5 (Equifax), FICO 4 (TransUnion), and FICO 2 (Experian) are the standard versions, and the lender takes the middle of the three.
Common calculation mistakes
- Using the current real-time balance. The bureau’s input is the statement-date balance. Your online portal balance can differ. Use the statement balance for utilization math.
- Including mortgage and auto loan. These are installment, not revolving. Including them in the formula inflates the denominator with non-applicable accounts and produces a wrong result.
- Ignoring closed cards with balances. A closed card with a remaining balance still has its balance reporting until paid off. The limit is typically treated as the highest balance achieved. Per-card utilization on the closed card is near 100 percent until the balance clears.
- Trusting credit-monitoring app numbers without verification. Apps sometimes round or pull from one bureau. Verify against the actual bureau file at AnnualCreditReport.com.
Recomputing utilization after a payment
When you pay a card down, the new utilization shows up only after the next statement closes and the new balance reports. Use the pillar payoff calculator to project the new balance, then divide by the limit to get the new per-card utilization on the upcoming statement. Sum the projected balances across cards to get the new aggregate.
The score change shows up 7 to 35 days after the payment, depending on when each card’s statement closes relative to the payment date.
Resources
Authoritative sources
- FICO, How my FICO score is calculated
- Experian, What is a credit utilization rate?
- Equifax, What is credit card utilization?
- TransUnion, What is credit utilization?
- CFPB, What is the difference between the due date and the statement date?
- CFPB, What is a charge card?
- AnnualCreditReport.com (free official reports)
Sibling questions
- Does credit utilization affect credit score?
- Does credit utilization include all cards?
- Does credit utilization include loans?
- What is per card vs total credit utilization?
- What utilization percentage is best for credit score?
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FAQ
Frequently asked questions
What is the formula for credit utilization?
Total credit utilization = (sum of all credit card statement balances / sum of all credit card limits) x 100. Per-card credit utilization = (this card’s balance / this card’s credit limit) x 100. Both formulas use revolving accounts only; installment loans (mortgage, auto, student loan) are excluded. The balances used are the statement-date balances reported by issuers to the bureaus, not current real-time balances.
How do I calculate my own credit utilization?
Pull a free report from AnnualCreditReport.com. List every open revolving account (credit cards, retail cards, HELOC) with its current statement-date balance and credit limit. Sum the balances. Sum the limits. Divide balances by limits. Multiply by 100. The result is your aggregate utilization. Also compute each card’s individual balance / limit to find your per-card utilization.
Does credit utilization use the credit limit or the balance?
Both. The formula is balance divided by limit, so utilization needs both inputs. The credit limit is your maximum approved credit line on each card. The balance is the statement-date amount the issuer reported to the bureaus. Some accounts (charge cards with no preset spending limit) lack a fixed credit limit and are handled separately.
How is utilization calculated when a card has no limit?
Charge cards with no preset spending limit (like classic Amex Green, Gold, Platinum charge versions) are typically excluded from the standard utilization calculation because there is no fixed denominator. Some FICO model versions use the highest balance ever reported on the account as a synthetic limit; this can produce confusing readings on credit-monitoring apps. The standard utilization formula does not apply cleanly.
How do bureaus compute aggregate utilization across all my cards?
Each bureau (Equifax, Experian, TransUnion) sums every open revolving account on its own file. The bureau does not coordinate across the other two bureaus. If a card reports to only Experian, it appears in Experian’s aggregate but not in Equifax or TransUnion. This is why your utilization can differ slightly across the three bureaus even when nothing has changed on your end.
How this fits with the four strategies
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Quick answers
What is the formula for credit utilization?
Total credit utilization = (sum of all credit card statement balances / sum of all credit card limits) x 100. Per-card credit utilization = (this card's balance / this card's credit limit) x 100. Both formulas use revolving accounts only; installment loans (mortgage, auto, student loan) are excluded. The balances used are the statement-date balances reported by issuers to the bureaus, not current real-time balances.
How do I calculate my own credit utilization?
Pull a free report from AnnualCreditReport.com. List every open revolving account (credit cards, retail cards, HELOC) with its current statement-date balance and credit limit. Sum the balances. Sum the limits. Divide balances by limits. Multiply by 100. The result is your aggregate utilization. Also compute each card's individual balance / limit to find your per-card utilization.
Does credit utilization use the credit limit or the balance?
Both. The formula is balance divided by limit, so utilization needs both inputs. The credit limit is your maximum approved credit line on each card. The balance is the statement-date amount the issuer reported to the bureaus. Some accounts (charge cards with no preset spending limit) lack a fixed credit limit and are handled separately.
How is utilization calculated when a card has no limit?
Charge cards with no preset spending limit (like classic Amex Green, Gold, Platinum charge versions) are typically excluded from the standard utilization calculation because there is no fixed denominator. Some FICO model versions use the highest balance ever reported on the account as a synthetic limit; this can produce confusing readings on credit-monitoring apps. The standard utilization formula does not apply cleanly.
How do bureaus compute aggregate utilization across all my cards?
Each bureau (Equifax, Experian, TransUnion) sums every open revolving account on its own file. The bureau does not coordinate across the other two bureaus. If a card reports to only Experian, it appears in Experian's aggregate but not in Equifax or TransUnion. This is why your utilization can differ slightly across the three bureaus even when nothing has changed on your end.