How Displacement-Based Vehicle Tax Works
Instead of taxing vehicles by value, several countries — including South Korea and Japan — charge passenger-car tax in tiers based on engine displacement. Small engines under 1000cc pay the lowest rate per cc, mid-size engines up to 1600cc pay a middle rate, and anything above that pays the highest rate. On top of the base tax, many regions add a local surtax (commonly around 30%) that funds education or infrastructure, so the bill you actually receive combines both amounts.
Most systems also reward keeping an older car: starting in the vehicle's third year, the total tax is discounted by roughly 5 percentage points per year, capping out at a 50% reduction around year 12. This calculator applies that same tiered-rate-plus-surtax-plus-age-discount model so you can estimate what a displacement-based tax bill would look like for any engine size and vehicle age — useful for comparison shopping or understanding how these systems work if you're relocating or importing a vehicle.
Frequently Asked Questions
No. Countries like South Korea and Japan use displacement tiers, while most U.S. states charge fees based on value or weight instead. This tool models the tiered approach for estimation and comparison.
Under this model, the discount starts in year 3 and grows by about 5 percentage points per year, capping at 50%.
Some regions layer an education or infrastructure surtax on top of the base tax, commonly around 30%, which this calculator includes for a realistic total.