What counts as a large heavy motorcycle
Article 3 of the Road Traffic Safety Rules splits motorcycles into heavy and light classes, and heavy ones into ordinary heavy (普通重型) and large heavy (大型重型). A petrol motorcycle over 250 cc, or an electric one whose motor and controller put out more than 40 HP, is a large heavy motorcycle: what riders usually call a big bike.
Large heavy motorcycles have their own compulsory insurance rate, NT$711 for one year or NT$1,306 for two, a little more than the NT$658 / NT$1,200 for ordinary heavy motorcycles. License tax and the road fee use the same schedules as every other motorcycle; bigger engines simply land in higher brackets.
Two schedules, nearly the same brackets
License tax (Schedule 3) and the road fee (Schedule 2) both break at 500, 600, 1,200 and 1,800 cc. The difference is at the top: license tax has a separate bracket of NT$11,230 for 1,801 cc and above, while the road fee schedule stops at 1,800 cc for motorcycles. We do not extrapolate beyond the schedule; for those bikes, the Highway Bureau’s notice is what counts.
Reading the examples
650 cc, 818.8 cc and 1,000 cc all fall in the 601–1,200 cc bracket, so they pay the same statutory amounts each year. 1,300 cc crosses into 1,201–1,800 cc, where both license tax and the road fee step up. For a single-model example, see the ZXMOTO 820RR estimate.
When to pay
License tax is due within a month from 1 April, the road fee is billed in July, and insurance renews on the date on your policy. For a newly registered bike, license tax and the road fee are prorated by the days left in the year. The full timetable is on the payment calendar.
What this page leaves out
Plate colours and designs are set separately by the Ministry of Transportation and Communications, and we have not checked the official notice, so they are not covered here. Import duty and commodity tax, inspection and registration charges and optional insurance are also outside this page; the agencies and insurers concerned are the authority on those.