Credit Score
Simulator

No — and you should be sceptical of any that claims to. FICO and VantageScore are proprietary models, and the exact algorithms are trade secrets that have never been published.

On top of that, a real score is computed from your full credit-bureau file, which contains data no calculator can see: exact account opening dates, month-by-month payment records going back years, balance history on every tradeline, and public records. There is also no single score — FICO maintains multiple versions (FICO 8, FICO 9, FICO 10T) plus industry-specific auto and bankcard variants, and each of the three bureaus holds slightly different data, so you legitimately have dozens of different scores at any moment.

What IS public is the WEIGHT FICO gives each of its five categories, and that is what this tool uses. Treat the number here as an educational estimate of where your profile sits, and treat the change when you simulate an action as the useful output.

For your actual score, your card issuer or bank most likely shows a real FICO or VantageScore free, and you can get your underlying reports free every week from AnnualCreditReport.com, the only federally authorised source.

Under 30% is the widely cited threshold, but under 10% is where the highest scores actually sit — FICO has said that people in the top score tier average roughly 7% utilization. Utilization is your revolving balances divided by your total revolving credit limits, and it is the dominant part of the 'amounts owed' category, which is 30% of a FICO Score — the second-largest of the five.

Two properties make it the most useful lever available to most people. First, it is calculated on the balance reported to the bureaus, usually your statement balance, so it reflects a moment in time rather than a history.

Second, and following from that, it carries almost no memory: pay a card down and the new, lower utilization is reflected as soon as the issuer next reports, typically within a billing cycle. That is why paying down revolving debt is the fastest legitimate way to move a score, while negative payment history takes years to age off.

Both total utilization and per-card utilization matter, so a single maxed card can hurt even when your overall figure looks fine. Source: myFICO, amounts-owed guidance.

Because it answers the question a lender is actually asking: has this person paid back credit on time before? FICO weights it at 35%, the largest of the five categories, and it is the one where damage is both most severe and most durable.

Three dimensions drive it — recency, severity and frequency. A payment must generally be 30 days late before a creditor reports it, so being a few days late may cost you a fee without touching your score at all.

Once reported, severity escalates sharply: a 30-day late is meaningfully lighter than a 90-day late, and a charge-off, collection, repossession, foreclosure or bankruptcy is heavier again. Recency matters because the impact fades as the event ages, and most negative entries drop off after seven years (ten for a Chapter 7 bankruptcy).

The practical implication is asymmetric and worth internalising: you cannot build payment history quickly, but you can damage it in a single month, so automating at least the minimum payment on every account protects the largest share of your score for almost no effort. Source: myFICO, payment-history guidance.

No. Checking your own credit is a soft inquiry and has no effect on your score, no matter how often you do it — this applies to scores from your card issuer, your bank, credit-monitoring apps, and the free reports from AnnualCreditReport.com. What can affect your score is a HARD inquiry, which happens when a lender pulls your file because you applied for credit.

A hard inquiry typically costs a few points, stays on your report for two years, and is only factored into FICO scoring for twelve months. The 'new credit' category as a whole is 10% of a FICO Score, so a single inquiry is a minor effect that is usually swamped by the account it creates.

One important protection: FICO deduplicates rate shopping. Multiple hard inquiries for the same type of loan — mortgage, auto or student — inside a focused shopping window count as a single inquiry, so comparing several mortgage lenders does not multiply the damage.

Credit-card applications are not deduplicated this way, so several card applications in quick succession do read as several inquiries. Source: myFICO, new-credit and inquiries guidance; CFPB.

It can, through two separate channels, which is why the common advice is to keep old no-fee cards open. The first and usually larger effect is on utilization: closing a card removes its limit from your total available credit, so the same balances now divide by a smaller denominator and your utilization jumps.

Closing an unused card with a $10,000 limit while carrying $3,000 across other cards can move you from roughly 10% to 30% utilization overnight, and 'amounts owed' is 30% of the score. The second effect is on length of credit history, which is 15%.

This one is slower and often overstated: closed accounts in good standing generally remain on your report for about ten years and continue to count toward your average account age, so the damage arrives later, when the account finally drops off. Weigh those against real reasons to close — an annual fee you no longer get value from, a card you cannot manage responsibly, or a divorce or separation where joint access is the problem.

If the only motivation is tidiness, keeping it open and using it occasionally is usually the better call. Source: myFICO, amounts-owed and length-of-history guidance.

It depends entirely on which factor you move, and the spread is very wide. Utilization is the fast lever: it is recalculated from whatever balance your issuer reports each cycle, carries no memory of previous months, and so paying down a card can show up within one billing cycle, typically 30 days or less.

Hard inquiries are next — they stop being scored after twelve months and disappear from the report at twenty-four. Length of credit history moves only with the calendar and cannot be accelerated at all, though opening no new accounts lets your average age rise on its own.

Negative payment history is the slowest: late payments, collections and charge-offs generally remain for seven years from the date of first delinquency, with their weight fading as they age, and a Chapter 7 bankruptcy stays for ten. Two things people expect to be fast are not: paying off a collection does not remove it from your report under older scoring models still in wide use, and disputing an accurate entry will not delete it.

The realistic sequence for most people is utilization first for a quick move, then time and consistency for everything else. Source: myFICO; CFPB consumer guidance on report retention periods.