Elijahmex wrote:why is my FICO score significantly lower than my other 3 CSs?
You don't have just one FICO score. FICO has many models and with most models you have a score with each of the 3 major CRA's. FICO 8 is the most commonly used model but there are creditors and products that use one of the many other FICO models. With any score you need to consider the specific model, the CRA and the relevance of a model/CRA combo to a given creditor. In other words, if a creditor uses TU FICO 8 then that's the only score that matters to that creditor. Any other model/CRA will not be relevant. You cannot pick one model and assume that it applies to all creditors out there.
As for why one score would be lower than another, we don't have the details on how each scoring model assesses report data. All we can say is that different models use different algorithms that evaluate report data differently. They can also have differing point ranges. Given that, you should expect different models to produce different numbers and should not use a score generated by one model to determine a score generated by a different model. Two different models can be coincidentally close or even generate the same number in certain situation but remember that coincidental and causal are two entirely different things.
Elijahmex wrote:I know about the 3 big creditors and I use TransUnion to track my CS bc my bank give me a free update every month.
They're CRA's, not creditors. The CRA's manage your reports. The creditors actually issue credit and determine what you qualify for using scores and report data compared against their specific underwriting criteria.
So, using what I provided above, let's take a look at the scores you're getting from TransUnion. TU provides VantageScores. Which of your creditors use a TU, EQ or EX VantageScore? The scores from TU will be relevant to those creditors. They will not be relevant to creditors that use other scores. Most creditors use one of the FICO models.