Credit Score Impact Calculator

Utilization after the change —

Utilization today: —
Change (percentage points): —
Band today: —
Band after: —
Likely effect: —
Reduction to reach 30%: —
Reduction to reach 10%: —

Utilization after the change

The chart appears with your result

Revolving utilization is your total card balances divided by your total credit limits. It is one of the largest inputs to scoring models, and lower is read as better. Paying 3,000 of balances down to 1,250 on 10,000 of limits drops utilization from 30% to 12.5%, a 17.5-point improvement in the ratio scorers see.

About this tool

Before a mortgage or car application, many people want to know what a paydown, a new purchase or closing an old card will do to their credit profile. Exact score changes cannot be computed outside the bureaus, because FICO and VantageScore keep their weights private, but the utilization ratio they read can. Enter your balances and limits today and after the planned change. The calculator shows both ratios, the change in percentage points, the band each falls into, the likely direction of the effect, and how much balance you would need to clear to reach 30% or 10%. A scale chart places the new ratio among the bands. Limit: it covers only utilization, not payment history, account age or inquiries.

How to use it

Enter today's totals
Add up the statement balances and the credit limits across all your revolving cards.
Enter the totals after the change
Lower the balance for a paydown, raise it for a purchase, or change the limit total for an opened, closed or increased card.
Read the bands and the gap
Compare the two bands, the point change and the dollar reductions needed to reach 30% and 10%.

Examples

Paying balances down from 30%

Total card balances: 3000
Total credit limits: 10000
Total balances after: 1250
Total limits after: 10000

Result Utilization after the change: 12.5%
Utilization today: 30%
Change (percentage points): -17.5
Band today: Moderate (30–50%)
Band after: Low (10–30%)
Likely effect: Utilization falls – usually helps the score
Reduction to reach 30%: $0.00
Reduction to reach 10%: $250.00

Current utilization = 3,000 ÷ 10,000 × 100 = 30%
After the change = 1,250 ÷ 10,000 × 100 = 12.5%
Change = 12.5 − 30 = -17.5 percentage points
Balance reduction to get under 30% = max(0, 1250 − 0.30 × 10000) = 0

Cutting 3,000 of balances to 1,250 on 10,000 of limits drops utilization by 17.5 points, from the edge of the moderate band into the low band.

Closing a 3,000 card

Total card balances: 2000
Total credit limits: 8000
Total balances after: 2000
Total limits after: 5000

Result Utilization after the change: 40%
Utilization today: 25%
Change (percentage points): 15
Band today: Low (10–30%)
Band after: Moderate (30–50%)
Likely effect: Utilization rises – usually lowers the score
Reduction to reach 30%: $500.00
Reduction to reach 10%: $1,500.00

Current utilization = 2,000 ÷ 8,000 × 100 = 25%
After the change = 2,000 ÷ 5,000 × 100 = 40%
Change = 40 − 25 = 15 percentage points
Balance reduction to get under 30% = max(0, 2000 − 0.30 × 5000) = 500

Balances stay at 2,000 but the total limit falls from 8,000 to 5,000, so utilization jumps from 25% to 40% without any new spending.

How it is calculated

U = B ÷ L × 100; change = U_after − U_today; reduction to 30% = max(0, B_after − 0.30 × L_after)

B: Total revolving balances reported on statements
L: Total credit limits on those accounts
U: Utilization ratio in percent

Utilization is computed the way the CFPB defines it: balances owed on revolving accounts divided by the credit available on them. The bands (under 10%, 10–30%, 30–50%, 50–75%, 75% and above) are common rules of thumb, not published cut-offs from any scoring model. The likely effect states only a direction, because the point change depends on the rest of the credit file.

Sources

What is a credit utilization rate? — Consumer Financial Protection Bureau
Credit reports and scores — Consumer Financial Protection Bureau

When not to use it

It cannot estimate the effect of a late payment, collection or bankruptcy.
It does not model hard inquiries or the age of new accounts.
Installment accounts with a fixed schedule are not part of revolving utilization.

Common mistakes

Using the balance after you paid instead of the balance on the statement, which is what most issuers report.
Forgetting that a closed card removes its limit from the total.
Leaving out cards with a zero balance, which still add to total limits.

Frequently asked questions

How many points will my score change?

No public formula gives that. FICO and VantageScore do not publish their weights, and the same utilization drop moves a thin file more than a long one. This calculator shows the ratio change, which is the part you can measure and control.

Is 30% a hard cut-off?

No. It is a widely quoted guideline. Scoring models treat utilization as a sliding scale, and people with the highest scores often report under 10%. Crossing 30% does not trigger a fixed penalty.

Does per-card utilization matter as well?

Yes. Models look at overall utilization and at individual cards, so one card near its limit can weigh on a score even when the total ratio is low. Run each card through separately to check.

When does a paydown show up?

Most issuers report the statement balance once a month. A paydown is usually reflected after the next statement closes and the bureau updates, often within 30 to 45 days.

Why does closing a card raise utilization?

Its limit leaves the denominator. With 2,000 of balances, dropping total limits from 8,000 to 5,000 moves utilization from 25% to 40% even though nothing new was spent.

Is utilization history remembered?

Classic FICO versions use only the current reported ratio, so a high month stops counting once it is paid down. Some newer models, such as FICO 10T and VantageScore 4.0, also read trended balance data.