You checked Credit Karma and saw a 720. Then you walked into a lender’s office, they pulled your credit, and quoted you a rate based on a 660. Your credit didn’t change between those two moments. You were looking at two completely different scoring models, and they don’t weigh your credit history the same way.
Most free score apps show you a VantageScore. Most lenders use a FICO score. And within FICO alone, there are more than two dozen versions in active use, each one calibrated for a different type of lending decision. The number you see on your phone and the number a lender sees on their screen are often built from the same credit report data but processed through different formulas.
When our analysts pull a client’s credit report, that gap between the app number and the lender number is one of the first things we walk through. The system is working exactly as designed. And once you understand which score matters for your situation, you stop planning around the wrong number.
Two Scoring Companies, Dozens of Models
The credit scoring market is dominated by two companies. They use the same raw data from the same three credit bureaus, but their formulas produce different results, and the gap can range from a handful of points to 40 or 80.
What FICO Scores Are
FICO has been around since 1989. It’s the scoring model most lenders have used for decades, and that hasn’t changed. Over 90% of top U.S. lenders use FICO scores in their credit decisions.
But there isn’t one FICO score. There are more than two dozen versions in circulation. FICO 8 is the most widely used general-purpose model. FICO 9 is newer and treats certain negative items differently. FICO 10 and 10T are the latest generation, though lender adoption has been slow. On top of those base models, FICO builds industry-specific versions for mortgage, auto, and credit card lending. Each one reweights the scoring formula to emphasize the payment behavior that matters most for that loan type.
The industry-specific versions are what catch most people off guard. Clients come in knowing they have “a good FICO score” without realizing their lender isn’t even pulling the general FICO 8. The version your lender uses depends on what you’re applying for. And you almost never get to choose.
What VantageScore Is
VantageScore was created in 2006 by the three major credit bureaus themselves: Equifax, Experian, and TransUnion. It’s currently on version 4.0, though most free apps still show version 3.0.
VantageScore was designed to score consumers with thinner credit files than FICO requires. It only needs one tradeline of any age to generate a number. FICO, by comparison, requires at least one account open for six months and at least one account reported within the last six months. That lower threshold means VantageScore can score roughly 33 million more consumers than FICO can.
That broader reach is why free score apps adopted it. More scoreable users means more people engaging with the app. It’s also why so many clients come in having tracked a score for months that their lender has never seen.
Same Range, Different Numbers
Both FICO and VantageScore use a 300 to 850 scale. That’s where the similarity ends.
FICO 8 weights payment history at 35% and credit utilization at 30%. VantageScore 4.0 gives payment history 41% of the weight but drops utilization to 20%. VantageScore 4.0 also factors in installment loan balances when calculating utilization, not just revolving accounts. FICO only looks at revolving credit for that calculation.
These weighting differences mean the same credit report can produce meaningfully different scores depending on which formula processes it. A consumer carrying high credit card balances but with perfect payment history will generally score higher on VantageScore than on FICO. Someone with lower utilization but a shorter credit history might see the opposite.
Which Score Your Lender Actually Uses
Knowing you have “a 720” doesn’t tell you much until you know which 720 it is. The score that determines your approval and your rate depends entirely on what you’re applying for.
Mortgages Still Use Older FICO Models
This is where the biggest surprises happen. Mortgage lenders working with Fannie Mae and Freddie Mac have been required to use three specific FICO versions: FICO 2 (pulled from Experian), FICO 4 (pulled from TransUnion), and FICO 5 (pulled from Equifax).
These are legacy models. They’re stricter than FICO 8 on collections, less forgiving on thin files, and don’t incorporate any of the scoring updates from the last 15 years. Your lender pulls all three, takes the middle score, and uses that for your rate and approval decision.
That means a consumer whose VantageScore reads 720 on Credit Karma could realistically see a mortgage FICO in the 660s or 670s. The same credit report, processed through a different formula, producing a completely different result.
In April 2026, the FHFA and HUD approved FICO 10T and VantageScore 4.0 as accepted models for conventional and FHA mortgage underwriting. VantageScore 4.0 is available now to approved lenders through a limited rollout. FICO 10T implementation is still pending. But Classic FICO (2/4/5) remains the standard during this transition, and most lenders haven’t switched yet. Don’t assume yours has.
Auto Lenders Use a Different FICO Version
Car dealerships almost always pull a FICO score, but it’s typically the FICO Auto Score 8, not the general FICO 8 you’d see on the Experian app. The auto-specific model weights your car payment history more heavily than your overall credit mix. If you’ve had an auto loan before and paid it consistently, your auto FICO may be higher than your base FICO. If you’ve never had a car loan, the advantage disappears.
Either way, it’s a different number than what Credit Karma shows you. Planning your car budget around your VantageScore can set you up for a different rate tier than you expected.
Credit Card Issuers Vary More Than You’d Think
Many credit card companies use the FICO Bankcard Score 8, which emphasizes revolving account behavior. Others use the standard FICO 8. A handful of fintech-oriented issuers have started using VantageScore.
There’s no universal rule here. If you want to know which model a specific issuer uses before you apply, you’ll usually need to ask them directly or check their disclosures. Most don’t make it obvious.
Personal Loans and Fintech Lenders
This is the one category where VantageScore has gained real traction on the lending side. Some online lenders and fintech platforms use VantageScore 3.0 or 4.0 as part of their underwriting, sometimes alongside FICO and sometimes on its own. If you’re applying for a personal loan through an online platform, your Credit Karma number may actually be close to what the lender sees. But for traditional banks and credit unions, FICO still dominates.
What Your Free Score App Is Actually Showing You
The score on your phone is real. It’s just not necessarily the score that matters for your next financial decision.
Most Free Apps Show VantageScore 3.0
Credit Karma shows VantageScore 3.0 using data from TransUnion and Equifax. NerdWallet, WalletHub, and Credit Sesame all show VantageScore 3.0 from TransUnion. Capital One CreditWise shows VantageScore 3.0 from TransUnion.
That’s not a coincidence. VantageScore licensing is less expensive for app providers, and the model scores more consumers, which means more users and more engagement. The business model works for the apps. But it means the vast majority of consumers checking their credit on their phone are looking at a score that most lenders don’t use for approval decisions.
Where to Find a Free FICO Score
The Experian app provides a free FICO 8 score from Experian data. Discover’s Credit Scorecard shows a TransUnion FICO 8 and is available to anyone, even if you’re not a Discover customer. Some banks and credit unions provide FICO 8 or FICO 9 through their online banking portals or card account dashboards.
None of these give you the mortgage-specific FICO 2/4/5. For those, myFICO.com is the only consumer-facing source, and it’s a paid service. Whether that’s worth it depends on how close you are to applying for a mortgage.
Why the Gap Can Be 40 to 80 Points
That gap comes from specific scoring differences between the models.
Consider someone who paid off a collection account last year and has a relatively short credit history with two open accounts. VantageScore 3.0 ignores paid collections entirely and can score that consumer with just one tradeline. FICO 8 still counts paid collections (though it ignores those under $100) and requires a longer minimum credit history. The mortgage FICO models (2/4/5) are even stricter.
That combination of collection treatment and minimum file requirements can easily create a 40 to 80 point difference between a VantageScore and a FICO score pulled from the same bureau on the same day.
We see this pattern regularly. A client comes in expecting to qualify for a conventional mortgage at prime rates based on their Credit Karma number, and their mortgage FICO puts them one or two pricing tiers lower. The most common driver is a paid collection that VantageScore stopped counting but the mortgage models still weigh.
The Five Factors That Score Differently Across Models
The models share the same general inputs: payment history, utilization, account age, credit mix, and recent inquiries. But the way they process those inputs varies in ways that directly affect your number.
Paid Collections
FICO 8 still factors in collection accounts, even paid ones. It ignores collections with an original balance under $100, but a paid $500 collection still drags on your score. FICO 9 took a different approach and excludes paid collections entirely. VantageScore 3.0 and 4.0 also exclude them.
This is one of the biggest drivers of the gap between free app scores and lender scores. If you paid off a collection and watched your Credit Karma score jump, don’t assume your FICO moved the same way. It may not have moved at all.
If you’re working on cleaning up collection accounts, it helps to understand what can actually be removed from your credit report and what stays on regardless of payment status.
Medical Debt
The credit bureaus made significant changes to medical debt reporting starting in 2023. Paid medical collections are no longer reported. Medical collections don’t appear for a full year after they’re sent to collections. And medical debt under $500 is excluded entirely.
On top of those bureau-level changes, FICO 9 reduces the scoring weight of unpaid medical collections compared to other types of debt. VantageScore 3.0 and 4.0 do the same. But the older mortgage FICO models (2/4/5) and FICO 8 still treat medical collections that do appear on your report with the same severity as any other collection.
If you’re planning a mortgage application and have medical collections on your report, the score you see on Credit Karma will likely reflect a more favorable treatment of that debt than what your lender’s model shows.
Credit Utilization Timing
Every scoring model cares about how much of your available credit you’re using. But they don’t all measure it the same way.
FICO 8 looks at utilization as a snapshot on your statement closing date. If you charged $4,000 on a $5,000 card and paid it off the next day, FICO only sees the balance that hit your statement. VantageScore 4.0 also considers trended utilization patterns over time, giving it a longer memory. And while FICO only calculates utilization on revolving accounts (credit cards and lines of credit), VantageScore 4.0 includes installment loan balances in its utilization math.
This means the same spending behavior can produce different utilization readings depending on the model. Someone who consistently pays their cards in full but carries a large auto loan balance will look different to VantageScore 4.0 than to FICO 8.
Hard Inquiries and Rate Shopping
When you apply for credit, the lender pulls your report and that shows up as a hard inquiry. Every model counts inquiries against you to some degree. But the rate-shopping protection window varies.
FICO 8 and newer versions treat multiple inquiries for the same type of loan (mortgage, auto, student loan) within a 45-day window as a single inquiry. This gives you nearly seven weeks to shop rates without each pull dinging your score separately. Older FICO models, including the mortgage-specific versions (2/4/5), use a 14-day window. VantageScore also uses 14 days.
If you’re rate shopping for a mortgage, the irony is that the very scoring model your mortgage lender uses gives you the least time to shop without additional inquiry impact. Get your rate comparisons done quickly.
Thin Credit Files
This one matters most for people who are early in building credit or anyone with a limited credit history.
FICO requires at least one account open for six months and at least one account reported to the bureau in the last six months. If you don’t meet both thresholds, FICO simply can’t generate a score. You’re “unscorable.”
VantageScore only needs one tradeline of any age. A single credit card opened last month is enough to produce a number. This is why someone with a brand-new credit file might see a VantageScore on Credit Karma but get told by a lender that they have no score. The app gave them a number. The lender’s model can’t.
How a 60-Point Gap Changes What You Pay
A credit score difference between models isn’t just an abstract number. It translates directly into what you pay for borrowed money.
Lenders don’t price rates on a smooth curve. They use pricing tiers with hard cutoffs. On a conventional mortgage, the loan-level price adjustments that determine your rate change at specific score boundaries: 780, 760, 740, 720, 700, 680, 660, and so on.
A VantageScore of 720 that translates to a FICO of 665 doesn’t just mean a slightly higher rate. It could mean a completely different pricing tier. On a $350,000 mortgage, one tier shift can cost tens of thousands of dollars over the life of the loan.
That’s why knowing which score your lender uses is one of the most important parts of financial planning. If you’re working on improving your credit before a loan application, you need to be tracking the right benchmark.
What’s Changing: The Mortgage Scoring Transition
The mortgage industry’s reliance on FICO 2/4/5 has been a known problem for years. Those models are decades old and don’t reflect how modern scoring treats collections, medical debt, or trended payment data.
In April 2026, the FHFA and HUD announced that Fannie Mae and Freddie Mac will accept FICO 10T and VantageScore 4.0 for conventional and FHA mortgage underwriting. This is the first update to accepted mortgage scoring models in decades.
VantageScore 4.0 is available now to approved lenders through a limited rollout. FICO 10T implementation will follow at a later date that hasn’t been announced yet. During this transition, lenders can choose between the new models and Classic FICO. Lenders not participating in the rollout must continue using Classic FICO.
What this means for you: eventually, the score your mortgage lender pulls will treat your credit history more similarly to what your free apps show. Paid collections will matter less. Trended data will matter more. But that transition isn’t complete, and most lenders haven’t made the switch. If you’re applying for a mortgage today, plan around the Classic FICO models until your lender tells you otherwise.
What to Do With This Information
Check the Right Score Before You Apply
If you’re planning a mortgage, your Credit Karma number is the wrong benchmark. Download the Experian app for a free FICO 8. Check Discover’s Credit Scorecard for a TransUnion FICO 8. If you want to see the actual mortgage-specific FICO 2/4/5, myFICO.com is the only consumer-facing option.
For auto loans, the same principle applies. Your VantageScore is not what the dealership will pull. Knowing your FICO before you walk in lets you negotiate from a position of clarity rather than guessing.
You’re also entitled to a free credit report from each bureau every year through AnnualCreditReport.com. The reports don’t include scores, but they show you the underlying data that every model draws from. Errors in that data affect every score version.
Understand Which Score Your Credit Repair Work Is Actually Moving
When you’re working on credit repair, improvements show up differently depending on the model. Getting a paid collection removed might move your VantageScore by 5 points if it was already ignoring that account. The same removal could move your FICO by 30 or 40 points because FICO 8 was still counting it.
That’s why the credit repair process at White Jacobs focuses on changes that move the scores lenders actually use, not just the number on a free app. Our analysts can walk you through which items on your report are dragging on which scores, and how much movement to realistically expect from each correction. You can learn more about how our process works.
Don’t Chase the Wrong Number
The most common mistake people make is optimizing for the score they see most often. If you check Credit Karma daily and you’re planning to buy a house, you’re watching a VantageScore while your lender will use a FICO.
The priorities aren’t always the same across models. Paying off a collection might be the single most impactful thing you can do for your FICO but barely register on your VantageScore (because VantageScore was already ignoring it). Timing your credit card payments before statement closing dates matters more for FICO’s snapshot-based utilization than for VantageScore 4.0’s trended approach.
Know which score you’re trying to move, then focus your energy there.
Common Questions
Is Credit Karma accurate?
Credit Karma shows a real VantageScore 3.0 from TransUnion and Equifax. That number is accurate for that model, but most lenders don’t use VantageScore 3.0 for credit decisions. The score on Credit Karma may not predict the number your lender pulls. Think of it as a directional indicator, not a quote.
Why is my Experian score different from my TransUnion score?
Each bureau maintains its own credit report independently. Not all lenders report to all three bureaus. A late payment reported to Experian but not TransUnion will create a gap between those two scores, even when the same scoring model is applied to both. The model is the same. The underlying data is different.
Which credit score matters most?
The one your lender uses. For mortgages, that’s currently FICO 2/4/5, with a transition to FICO 10T underway. For auto loans, it’s typically FICO Auto Score 8. For credit cards, usually FICO Bankcard Score 8 or standard FICO 8. If you don’t know which lender you’ll use yet, FICO 8 is the closest general-purpose benchmark, and it’s available for free through the Experian app or Discover Credit Scorecard.
Can my credit score really be 60 points different depending on the model?
Yes. The gap tends to be largest for people with paid collections, thin credit files, or recent negative items. These are the factors the models treat most differently. If you have a long, clean credit history with no collections, your scores will typically cluster closer together across models. The more complexity in your report, the wider the gap.
Should I pay for my credit score?
In most cases, no. The Experian app gives you a free FICO 8. Discover Credit Scorecard provides a free TransUnion FICO 8 to anyone. AnnualCreditReport.com gives you free reports from all three bureaus (without scores, but with the raw data). If you need to see the specific mortgage FICO 2/4/5 models, myFICO.com is the only consumer-facing source and does charge for it. That’s worth considering if you’re within a few months of a mortgage application and want to see exactly what your lender will see.
Why did my score drop on one app but not another?
Different models react differently to the same credit event. If you opened a new credit card, your VantageScore might drop slightly from the hard inquiry while your FICO barely moves because FICO weighs inquiries at just 10% of your total score. If a collection just fell off your report, your FICO might jump while your VantageScore stays flat because it was already ignoring that account. Same event, but each model reads the weight of that event differently.
Know Your Real Number Before You Make a Move
You can check a free score app every day and still be surprised when a lender pulls your credit. Not because the app lied to you, but because it showed you a different version of your credit story than the one your lender is reading.
The fix is simple. Know which scoring model your lender will use. Check the version of your score that matches. And if there’s a gap between your app score and your lender score, figure out what’s driving it before you apply.
When our analysts sit down with a new client, the first conversation is always about which numbers actually matter for the goal. Whether that’s a mortgage, a car, a credit card, or just a cleaner report, the starting point is the same: understand what you’re working with, then build a plan around reality instead of the number on your phone.
Book a free consultation. We’re easy to talk to.