Where do fuel permits apply?
Fuel permits cover IFTA-jurisdiction temporary entry — when a non-IFTA-registered carrier needs to operate temporarily in an IFTA state. They are short-term passes (usually 24-72 hours, sometimes 30 days) and only apply to interstate carriers without an active IFTA decal.
IFTA (International Fuel Tax Agreement) is the multi-jurisdictional fuel-tax compact — a carrier registers in their base state, pays quarterly, and reports miles in every IFTA jurisdiction. Once registered, a carrier doesn't need separate fuel permits in IFTA states.
Temporary fuel permits exist for two cases: (1) a brand-new carrier without IFTA registered yet but needing to make a trip; (2) a carrier operating outside their normal IFTA jurisdictions on an irregular basis (rare for active fleets).
Cost is typically $20-$50 per state per permit, valid for 24-72 hours. After three-plus temporary permits in a year, registering for IFTA in your base state is cheaper.
Non-IFTA states (Oregon, plus the Canadian Yukon and Northwest Territories) don't use the IFTA decal system at all — Oregon uses its WMT instead. The temporary-permit concept doesn't apply there in the same way; Oregon-only operators register directly with Oregon DOT.