Highway Toll Calculator

Overview

This calculator estimates tolls on Korean expressways run by the Korea Expressway Corporation using the published tariff: a fixed base fare plus a per-kilometre running charge that depends on the vehicle class. It handles both closed (entry and exit toll gates) and open (single gate) systems, applies the 50% discount for two-lane sections and the 20% surcharge for sections with six lanes or more, and subtracts the discount you qualify for — 50% for light cars, 30% for EVs in 2026, 20-50% for commuter hours, 10-20% for multi-child households.

Formula

Closed system toll = 900 KRW base fare + distance (km) × the per-km running charge for your class. Open system toll = 720 KRW base fare + the shortest chargeable distance for that gate × the same running charge. Per-km charges are 44.3 KRW for class 1, 45.2 for class 2, 47.0 for class 3, 62.9 for class 4 and 74.4 for class 5. Two-lane sections halve the running charge and sections with six or more lanes add 20%. The discount is applied and the result is rounded to the nearest 100 KRW. A class 1 car driving 100 km pays 900 + 100 × 44.3 = 5,330 KRW, rounded to 5,300 KRW.

How to Use

1. 1Pick the tariff system: closed (900 KRW base fare) for ordinary expressways with gates at both ends, open (720 KRW) for urban expressways with a single gate.
2. 2Pick the vehicle class. Passenger cars, vans up to 16 seats and trucks under 2.5 tonnes are class 1; three-axle vehicles are class 4 and four or more axles class 5.
3. 3Enter the distance in kilometres — for the open system, the shortest chargeable distance assigned to that gate.
4. 4Choose the number of lanes on the section: four lanes is the baseline, two lanes halve the running charge, six or more lanes add 20%.
5. 5Choose your discount. Light car, EV, commuter, multi-child and disability discounts never stack — only the largest one applies.
6. 6Select one-way or return to see the final toll rounded to 100 KRW alongside the base fare, running charge and discount breakdown.

Examples

Background

Korean expressway tolls are set under the Toll Road Act so that users share construction and maintenance costs. Gate operating costs do not scale with distance, so they are billed separately as a base fare — 900 KRW on the closed system, 720 KRW on the open system — while the rest is charged per kilometre. Classes are defined by axle count and tyre geometry rather than by weight: a two-axle vehicle moves from class 1 to class 2 once tyre width exceeds 279.4 mm and to class 3 once track width exceeds 1,800 mm, while three axles make class 4 and four or more class 5. Lane count adjusts the running charge to reflect construction cost, and the EV discount is being phased out from 50% in 2024 to 40% in 2025, 30% in 2026 and 20% in 2027 before ending. Multi-child discounts began on 28 July 2026 for three or more children and 22 August 2026 for two, and apply only at weekends and public holidays.

Tips

• ✔The commuter discount only applies on weekdays when the entry and exit gates are less than 20 km apart, so one extra junction can wipe it out entirely.
• ✔Discounts never stack. If you drive a light car during commuter hours you get the 50% light-car rate, not 70%.
• ✔Light-car, EV, multi-child and commuter discounts require payment through Hi-Pass or another electronic method — a cash lane means the full fare.
• ✔Privately financed expressways such as the Incheon Bridge set their own tariffs and can cost two to three times the figure shown here.
• ✔Tolls are sometimes waived nationwide during the Seollal and Chuseok holidays, so check announcements before a long trip.
• ✔Real routes mix two-, four- and six-lane sections, so treat this as an estimate and confirm the exact fare on ex.co.kr.

FAQ