Tier Bump
What is a tier bump on a car loan?
A tier bump is a move from one credit tier to the next — for example, deep-subprime (300-500) crossing into subprime (501-600) — triggered by a lender's internal score cutoff rather than by any fixed number of points. Because lenders price by tier, not by exact score, a 1-point move across a cutoff usually changes the rate far more than 20 points that stay inside the same tier.
Key takeaways
- A tier bump means crossing from one credit tier into the next — for example, from deep-subprime (300-500) into subprime (501-600) — rather than simply gaining points.
- Lenders price by tier, not by the exact point value of a score, so a 1-point move across a cutoff can change the quoted rate more than 20 points that stay inside one tier.
- On a $15,000 used loan over 60 months, the full deep-subprime-to-super-prime range is $411 a month at 21.6% APR versus $292 a month at 6.3% — a $119 gap built largely from crossing tier boundaries, not from score points alone.
- A tier bump can come from something small, like one late payment finally aging off or one revolving balance dropping below a threshold, without any dramatic credit event.
- Knowing where your tier's cutoff sits matters more than chasing an arbitrary point target, because points that don't cross a cutoff buy little at the desk.
What is a tier bump?
A tier bump is a move from one credit tier into the next — not just an improvement in your score, but a crossing of the line that separates how a lender prices two different groups of borrowers.
Lenders don't price loans off a raw score. They sort applicants into tiers and price the tier. Moving from a 495 to a 505 looks like a small change on a credit report, but if 500 is the cutoff, that 10-point move crosses from deep-subprime into subprime — a different pricing table entirely.
What are the credit tiers?
| Score range | Tier |
|---|---|
| 300-500 | Deep subprime |
| 501-600 | Subprime |
| 601-660 | Near prime |
| 661-780 | Prime |
| 781-850 | Super prime |
These bands are the reference points used across this site. A specific lender's internal cutoff can sit a few points to either side of them, which is why two lenders can treat the same score differently.
Why does crossing a tier boundary matter more than moving inside one?
Because the lender's rate table is built around the tier, not the point value. A borrower who moves from 550 to 590 stays inside the subprime tier (501-600) the whole way, and most programs won't move their rate meaningfully for that. A borrower who moves from 598 to 602 crosses into near prime — a different tier with a different starting rate — on a 4-point change.
That asymmetry is the whole idea behind a tier bump. The size of the score movement tells you almost nothing on its own. What matters is whether it crossed a line.
How much difference does a tier make in dollars?
The full published range is wide. On a $15,000 used-vehicle loan over 60 months, using Experian's Q1 2026 figures:
| Deep-subprime average (21.6%) | Super-prime average (6.3%) | |
|---|---|---|
| Payment | $411/mo | $292/mo |
| Total interest | $9,653 | $2,525 |
That's a $119-a-month gap and $7,127 over the loan — for the identical vehicle. This is the outer range across all 5 tiers, so it's not what a single tier bump is worth by itself. But it shows the scale of what's being divided up across those tier boundaries, and why lenders defend them as hard cutoffs rather than smoothing pricing point by point.
What actually causes a tier bump?
Usually something unremarkable rather than a single dramatic event.
- A late payment aging past the point where it stops weighing on the score
- A credit card balance dropping below a utilization threshold that scoring models watch
- A thin file finally generating a score after enough time and activity
- A repossession or collection account crossing a recency threshold a specific lender uses internally
None of these feel like news when they happen. That's part of why so many borrowers never realize their file has moved — see risk-based pricing for how a lender turns that tier assignment into an actual rate.
Should I wait and try to force a tier bump before applying?
Only if something specific and fixable is close to a line you can identify. Otherwise, waiting mostly costs you months without changing the number that matters.
If you don't know how close you are to a cutoff, there's no way to time it, and a car you need now is worth more than a maybe-bump six months out. The more reliable path for most subprime borrowers is financing carefully at today's tier and revisiting the rate through a refinance once on-time payments have had a chance to move the file — see car loan rates by credit score for the full breakdown by tier.
Related: car loan rates by credit score and risk-based pricing.
Common questions
What is a tier bump on a car loan?
It's a move from one credit tier into the next — for example, from deep-subprime (300-500) into subprime (501-600) — because your score crossed a lender's internal cutoff. It changes which rate tier a lender prices your loan from, not just your score number.
Why does crossing a tier boundary matter more than gaining points?
Lenders quote rates by tier, not by exact score, so 20 points that stay inside deep-subprime (300-500) usually change little. A single point crossing into subprime (501-600) can move the rate a lender offers far more.
How much can a tier bump actually save?
It depends which boundary you cross. On a $15,000 used loan over 60 months, the full published range runs from $411 a month at the deep-subprime average of 21.6% to $292 a month at the super-prime average of 6.3% — a $119 gap built mostly from tier boundaries.
What causes a tier bump?
Often something small: a late payment aging past 24 months, a revolving balance dropping below a utilization threshold, or a thin file finally scoring. None of these feel dramatic, but they can push a score across a lender's cutoff.
Can I find out exactly where a lender's tier cutoffs are?
Not usually. Cutoffs are internal to each lender's program and aren't published. The 300-850 bands used across this site are industry-standard reference points, but a specific lender's cutoff can sit a few points off that line.