Korean car tax = engine displacement × per-cc rate
Korean automobile tax is a local tax imposed under the Local Tax Act by the Ministry of the Interior and Safety. The formula is simple:
```
Annual car tax = displacement (cc) × per-cc rate + local education surtax (30% of car tax)
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It's based on engine displacement only, not the vehicle's price. A K9 and a G80 at 3,000cc pay identical car tax. The reason a 1,999cc and a 2,000cc engine fall into very different tax brackets is the same simple formula.
| Vehicle | KRW per cc | Note |
|---|---|---|
| Non-commercial ≤ 1,000cc | 80 | Light car |
| 1,001–1,600cc | 140 | Compact |
| ≥ 1,601cc | 200 | Mid/full size |
| Commercial | 18–24 | Taxi, rental |
| EV | 130,000 (flat) | Green discount |
| Hydrogen | 130,000 (flat) | Green discount |
Car tax is billed in two installments by default (June + December). A January-prepay election earns a 5% discount (down from 7% before 2025).
A 2,000cc gasoline sedan (Hyundai Sonata, Kia K5) costs about ₩520K/year in car tax, plus 30% local education surtax for a total of ~₩670K. Stacking the five tactics below can save ₩70K–₩300K per year.
Tip 1 — Apply for the annual prepay discount (Jan/Mar/Jun/Sep)
The fastest, most reliable savings. Pay the whole year upfront in January for a 5% discount.
| Prepay window | Discount | Savings on ₩600K base |
|---|---|---|
| January (1–31) | ~5% | ₩30,000 |
| March (Mar 16–31) | ~4% | ₩24,000 |
| June (Jun 16–30) | ~2.5% | ₩15,000 |
| September (Sep 16–30) | ~1.25% | ₩7,500 |
How to apply:
- Log into WETAX (wetax.go.kr) → "Car tax annual prepay"
- Or ETAX (etax.seoul.go.kr) for Seoul-registered cars
- Or visit your local district office's tax department
- Mobile Gov24 and KakaoTalk Ministry of Interior notifications also work
Once enrolled, the prepay continues automatically each year — until you transfer or scrap the car, which auto-cancels enrollment. Re-enroll after re-registering.
If you transfer the car mid-year after prepaying, the unused portion is refunded pro-rata. The refund is mailed and deposited to your district-registered bank account, typically within 2–3 weeks.
Run Korean Car Tax Calculator with your displacement to compare prepay vs split-pay timing side-by-side.
Tip 2 — EV / hydrogen flat-rate discount
EVs and hydrogen vehicles pay a flat ₩130,000 in car tax — including the surtax that's ₩169,000 total, roughly 70–80% lower than a comparable gasoline car.
| Item | Gasoline 2,500cc | EV |
|---|---|---|
| Car tax | ₩500,000 | ₩130,000 |
| Education surtax (30%) | ₩150,000 | ₩39,000 |
| Annual total | ₩650,000 | ₩169,000 |
Additional perks:
- Acquisition-tax credit: up to ₩1.4M (sunsetting end-2026)
- Public parking: 50% off at home and workplace public lots
- Highway tolls: 50% off, auto-applied via Hi-Pass
- Extra car-tax discount: some local governments (Seoul, Sejong, Jeju) cut an additional 50%
2026 is the last year of the EV/H2 acquisition-tax credit. Starting 2027, EVs pay the same 4% acquisition tax as ICE cars. If you plan to buy, registering by December 2026 keeps the credit. That said, base your decision on driving pattern, charging access, and resale — not tax alone.
The EV Charge Cost tool compares a 5-year EV vs gasoline total operating cost.
Tip 3 — Light cars (≤1,000cc)
Light-car class pays the lowest rate at ₩80/cc. A 999cc Morning, Ray, Casper, or Spark owes about ₩80K/year in car tax, ₩104K with surtax.
| Benefit | Detail |
|---|---|
| Car tax | ~₩80,000/year (999cc) |
| Acquisition tax | 4% → 1% (75% cut, capped at ₩750K) |
| Fuel tax refund | up to ₩300K/year |
| Public parking | 50% off |
| Highway tolls | 50% off |
| Auto insurance | 10–20% off at some insurers |
The fuel-tax refund needs separate registration. Linking a designated credit card (Hyundai M-Point, KB K-Pass, etc.) automates the refund.
Light-car eligibility requires length ≤ 3.6m, width ≤ 1.6m, height ≤ 2.0m, plus displacement ≤ 1,000cc. The Casper and Ray look like small SUVs but qualify and get every benefit.
Tip 4 — Time the transfer / scrap / move
Car tax is prorated by ownership days, so timing a transfer, scrap, or address change just before a quarter saves the next quarter outright.
| Transfer timing | Effect |
|---|---|
| Just before June 1 (by May 31) | H2 car tax exempt |
| Just before December 1 (by Nov 30) | H1 tax stands; following year is buyer's |
| Mid-quarter | Prorated to transfer date |
Scrapping works the same way. If your scheduled scrap date is June 5, moving it to before June 1 saves the H2 portion. Weigh this against your actual driving need and the scrapyard's schedule.
On name changes:
- Spouse ↔ you: no tax change (acquisition tax waived between spouses)
- Parent ↔ child: acquisition tax applies (related-party transfer)
- Corporate ↔ personal: both car tax and acquisition tax change
Tax-motivated name changes deserve a quick consult with a tax professional. Pure car-tax savings can be wiped out by acquisition-tax increases.
Tip 5 — Downsize displacement at replacement time
When swapping cars, shifting one displacement tier down delivers real savings.
| Change | Annual car-tax savings |
|---|---|
| 3,300cc → 2,500cc | ~₩160K |
| 3,000cc → 2,000cc | ~₩200K |
| 2,000cc → 1,600cc | ~₩130K |
| 2,000cc → 999cc (light) | ~₩320K |
| Gasoline 2,000cc → EV | ~₩350K |
Over 10 years that's ₩1M–₩3.5M in simple-sum savings. But run the full math on:
- Acquisition tax (7% of new-car price)
- Insurance premium changes
- Depreciation loss
- Fuel economy and maintenance
Use the Fuel Economy Calculator to project 5-year total ownership cost.
Stacked scenarios — 5-year simulation
For a 2,000cc gasoline sedan (~₩650K/year car tax) over 5 years:
| Scenario | Annual savings | 5-year total |
|---|---|---|
| Baseline (split-pay, ICE) | 0 | 0 |
| January prepay 5% | ₩32,500 | ₩162,500 |
| January prepay + downsize to light car | ₩567,500 | ₩2,837,500 |
| January prepay + switch to EV | ₩489,000 | ₩2,445,000 |
| January prepay + EV + 50% toll discount (~₩500K/yr driver) | ₩739,000 | ₩3,695,000 |
Fastest win: January prepay (5% instant). Biggest compounded win: switching to EV with the full green-perk stack. As before — base any vehicle swap on driving patterns and charging access, not tax alone.
Five more ownership-cost levers (not car tax, but adjacent)
While we're optimizing the ownership cost, these five layer on top:
- Direct-channel auto insurance: ~15% cheaper than agent-mediated policies on average
- Dashcam + reverse cam: 5–10% additional insurance discount at some carriers
- Mileage-based insurance: drivers under 5,000 km/year can save 30%
- Hi-Pass post-paid card: 5–10% toll cashback depending on issuer
- Inspection exemption rights: qualifying older cars can defer biennial inspection
Stacked, these can deliver another ₩300–800K of annual savings on top of car tax.
FAQ
Q. I missed the January prepay. Is March worth it?
The drop from 5% → 4% costs you about ₩6,000 on a ₩600K base — small enough that March is still worth doing. Don't skip June or September either.
Q. Does the prepay discount apply to EVs?
Yes. 5% of ₩130,000 = ₩6,500 saved. Small but worth it.
Q. Are mid-year refunds automatic?
Yes. The unused portion is calculated pro-rata at transfer/scrap and refunded to your district-registered bank account, typically in 2–4 weeks.
Q. What happens if I miss a payment?
You incur a 3% surcharge plus 1.2% monthly interest. Over a year, the car can be impounded and license plates seized. Set up an installment plan immediately at WETAX.
Q. Are foreign cars taxed the same?
Yes — car tax is by registration, so a BMW 520i (2,000cc) and Sonata (2,000cc) pay the same car tax. Acquisition tax differs because it's based on purchase price, which is much higher for imports.
Q. Is the 1,999cc vs 2,000cc difference really meaningful?
The bigger cliff is 1,600cc → 1,601cc, which jumps from ₩140/cc to ₩200/cc. A 1,600cc car owes ₩224,000; a 1,601cc owes ₩320,200 — almost ₩100K jump for one extra cc. Engine designers know this and frequently target 1,598cc / 1,999cc to stay just under thresholds.
Related tools
- Korean Car Tax Calculator — prepay/split/refund sim
- EV Charge Cost — 5-year cost vs gasoline
- Fuel Economy — cost-per-model comparison
Bottom line — fastest 5% + biggest green stack
Korean car-tax savings reduce to a three-axis play: prepay + green vehicle + smaller engine. The fastest win is January prepay (5%, five minutes of work, ₩30K instant). The biggest is the EV switch (₩300–500K/yr + perks).
When changing cars, run the full math, not just the tax. Plug your real numbers into the Korean Car Tax Calculator before deciding.