How Much Does It Cost to Register a Boat in Idaho?
In Idaho, boat registration is handled by the Idaho Department of Parks & Recreation and renews annually. The fee is based on boat length — from $30 for the smallest class up to $70 for the largest per year. Non-motorized craft like kayaks and canoes are generally exempt (check local rules for sailboats). Boats with motors — including trolling motors on otherwise unpowered craft — almost always require registration.
Cost by boat size
| Boat | Per year | One-time (title etc.) |
|---|---|---|
| 14-ft motorboat | $38.00 | $14.00 |
| 20-ft motorboat | $46.00 | $14.00 |
| 28-ft motorboat | $70.00 | $14.00 |
| Kayak/canoe (no motor) | Free — exempt from registration | |
- Formula: $30 for powered boats up to 12 ft plus $2 per additional foot (invasive-species fee included), plus a $1.50 vendor fee.
- Non-motorized craft skip registration but need a $7/yr invasive species sticker (inflatables under 10 ft exempt).
Estimate your exact Idaho cost
Your boat
- Registration fee (by length)$46.00
- Title fee$14.00
Estimate only — actual fees are set by your state and county at the time of registration. Data last reviewed 2026-07-16. This state's full local formula is not yet implemented; see the notes below the calculator.
All figures computed from official fee schedules — sources: https://itd.idaho.gov/dmv/registrations-plates-titles/vehicle-registrations/ — last reviewed 2026-07-16.