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Different Credit Scoring Models Explained

Why there are multiple scoring models

When you check your "credit score," what you actually see depends on which scoring model is being used. There are dozens of credit scoring models in use, and they can produce different scores from the same underlying credit report data.

This is not a flaw in the system - it is by design. Different scoring models are designed for different purposes. A model designed to predict mortgage default looks at different factors than a model designed to predict credit card default.

The result is that you might have a 720 with one model and a 650 with another, looking at the exact same credit report.

The two main scoring companies

FICO

Fair Isaac Corporation. Created the original credit score in 1989. FICO scores are used by approximately 90% of top lenders for credit decisions. FICO has many different scoring models, updated periodically.

VantageScore

Created in 2006 as a joint venture between the three credit bureaus. VantageScore is used by some lenders, especially for non-mortgage products, and is the score shown by many free credit monitoring services.

FICO scoring models

FICO 8

The most commonly used scoring model. Released in 2009. FICO 8 is what you see on most credit card and personal loan applications.

Key characteristics of FICO 8:

Range: 300-850
Treats medical collections the same as other collections
Heavy weight on payment history (35% of score)
Significant weight on credit utilization (30% of score)
Length of credit history (15%)
New credit (10%)
Credit mix (10%)

If a lender pulls your credit and gives you a single number, it is most likely FICO 8.

FICO 9

Released in 2014. Adoption has been slow because lenders have to update their systems and processes to use it.

Key differences from FICO 8:

Paid medical collections are ignored entirely
Unpaid medical collections are weighted less than other collections
Rental payment history can be included if reported
Treatment of collections is generally more lenient

If you have medical collections, your FICO 9 score is probably significantly higher than your FICO 8 score.

FICO 10 / FICO 10T

Released in 2020. Adoption has been gradual.

Key differences:

FICO 10T uses "trended data" - looking at credit balances over time, not just the current snapshot
Greater emphasis on patterns over multiple months
More punishing of high credit utilization that has been sustained over time
Generally similar treatment of collections to FICO 9

The "T" in 10T stands for "trended" data.

Industry-specific FICO scores

FICO produces specialized scores for specific lending industries.

FICO Auto Score: Used by auto lenders. Weights auto loan history more heavily. Range can extend to 250-900 instead of the standard 300-850.

FICO Bankcard Score: Used by credit card issuers. Weights credit card history more heavily. Same extended range as Auto Score.

FICO Mortgage Score: Used by mortgage lenders. Specifically, mortgage lenders typically pull FICO 2 (Experian), FICO 5 (Equifax), and FICO 4 (TransUnion). These are older models that are still used because of how the mortgage industry implementation works.

If you are applying for a mortgage, the score the lender sees is probably from these older FICO models, which can differ from FICO 8.

VantageScore models

VantageScore 3.0

Released in 2013. Used by many free credit monitoring services including Credit Karma.

Key characteristics:

Range: 300-850 (changed from earlier 501-990 range to match FICO)
More lenient on certain types of negative items
Can produce a score with shorter credit history than FICO requires
Treats medical collections more leniently

VantageScore 4.0

Released in 2017. The newest VantageScore model.

Key differences:

Includes trended data (similar to FICO 10T)
Updated treatment of paid collections
Specific provisions for medical debt
Paid collections (including medical) are ignored or weighted very lightly

If you check Credit Karma, you may see VantageScore 3.0 from TransUnion and Equifax. The score Credit Karma shows is real but is not necessarily what a lender will see.

How to tell which score you are looking at

The score should be labeled. Look for:

"FICO 8" or "FICO Score 8"
"FICO Bankcard Score 8"
"VantageScore 3.0"
etc.

Most credit monitoring services show one or two specific scores. Lenders may use different scores than what you see in monitoring services.

Why your score differs between sources

Common reasons for score differences between sources.

Different scoring models

Credit Karma shows VantageScore 3.0. Your credit card issuer shows FICO 8. These can be 30+ points apart for the same person on the same day.

Different bureaus

The same scoring model on different bureaus can produce different scores because each bureau has slightly different data. An account might appear on Experian but not TransUnion.

Different timing

Your score changes as your credit report updates. A score pulled today and one pulled tomorrow can differ if anything was reported in between.

Different data sources

Some monitoring services use older data than others. Lenders typically use real-time pulls.

Which score matters

The score that matters is whichever one the lender you are applying to actually uses.

For most credit decisions:

Credit cards: Most issuers use FICO 8 or FICO Bankcard Score
Auto loans: Most lenders use FICO Auto Score
Mortgages: Lenders use FICO 2, 4, and 5 (the "mortgage scores")
Apartments: Often VantageScore or FICO 8
Insurance: Specialized insurance scores, separate from credit scores

For most people, focusing on FICO 8 is reasonable because that is what most lenders use. If you are specifically applying for a mortgage, focus on the mortgage-specific scores.

What affects your score

All major scoring models look at similar factors, weighted differently.

Payment history (the biggest factor)

Whether you pay on time or have late payments, charge-offs, or collections.

Credit utilization

How much of your available credit you are using. Lower is better. Generally aim for under 30%, ideally under 10%.

Length of credit history

The age of your accounts and your average account age. Longer is better.

New credit

Recent credit applications and new accounts. More applications hurt slightly. New accounts lower your average account age.

Credit mix

Having different types of credit (credit cards, installment loans, mortgage). Better mix slightly improves scores but is a minor factor.

What does not affect your score

Things people often think affect credit but do not:

Your income
Your savings or assets
Your employment status
Your race, religion, gender, or marital status
Whether you check your own credit (this is a soft inquiry that does not affect score)
Authorized user accounts where you are not the primary holder do not affect score in newer models

Strategies to improve your score

Pay on time, every time

Payment history is the biggest factor. Even one missed payment can hurt your score significantly. Set up auto-pay for at least minimum payments to prevent missed payments.

Keep utilization low

Pay down credit card balances to keep utilization under 30%, ideally under 10%. Utilization is calculated each month based on the balance reported, so paying down before the statement closes can help your score.

Do not close old accounts

Closing accounts reduces your total available credit (raising utilization) and can reduce your average account age. Keep old accounts open even if you do not use them.

Limit new credit applications

Each hard inquiry causes a small score drop. Multiple inquiries in a short time can compound. Apply for credit only when needed.

Be patient

Credit improvement takes time. Negative items have less weight as they age. Recent positive history accumulates. Steady positive behavior over months and years produces the most improvement.