How to Use the Car Insurance Discount Tier Calculator
Korea runs a standardized nationwide system where every driver sits on a single 1-26 discount/surcharge tier scale, moving up one tier per claim-free year and dropping several tiers after a claim. The U.S. has no equivalent government-mandated tier scale — each insurer builds its own proprietary safe-driver discount and pricing algorithm, often blending years of clean driving, claim history, credit-based insurance scores, and more.
This calculator uses a simplified Tier 1-20 model to illustrate the general idea: staying claim-free moves you up a tier, while a property claim or injury claim moves you down one to three tiers depending on severity. Enter your current tier, this year's claim history, and your premium to see an estimated renewal tier, rate change, and dollar amount.
Because real U.S. insurers don't publish a shared tier table the way Korea's system does, treat these numbers as an educational approximation only. Your actual renewal premium depends on your specific insurer's underwriting rules, state regulations, and other factors like vehicle type and location — always confirm the real figure with your insurer's renewal notice.
Frequently Asked Questions
No. Korea has a standardized nationwide 1-26 discount/surcharge tier system. In the U.S., each insurer uses its own proprietary safe-driver discount and pricing model — there's no single national tier scale.
It varies by insurer, claim type, and state, but a single at-fault claim commonly raises premiums by roughly 20-45% at renewal, and the effect can last 3-5 years depending on the company.
No. It's a simplified illustrative model (Tier 1-20) used only to show how claims and claim-free years might shift your discount — actual pricing depends entirely on your insurer's own rules.