Washington RV Registration Fee Calculator
RV registration in Washington splits by type. Self-propelled motorhomes register like other motor vehicles — motorhomes pay $30 base + a flat $75 motorhome weight fee (2026) — and the RTA excise DOES apply to them in the Sound Transit district, which can add hundreds. Towed travel trailers and campers run on a separate schedule: roughly $30 per year. Travel trailers get a break: flat $30/yr with NO weight fee and an explicit exemption from the Sound Transit RTA tax. Because motorhome MSRPs are large, value-based charges hit RVs harder than any other vehicle class.
Your rv
- Motorhome registration$105.00
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.
What determines RV registration cost in Washington?
- RV type (motorhome vs. travel trailer)
- Motorhomes: the state's standard vehicle formula (value/weight/age)
- Travel trailers: separate weight/length schedule
Frequently asked questions
How much does it cost to register a motorhome in Washington?
Motorhomes follow Washington's regular vehicle fee system (motorhomes pay $30 base + a flat $75 motorhome weight fee (2026) — and the RTA excise DOES apply to them in the Sound Transit district, which can add hundreds) — use the calculator above with your RV's MSRP and weight. In value-based states a $150,000 Class A can cost several thousand dollars a year at first.
Do travel trailers register differently than motorhomes in Washington?
Yes — travel trailers are towed, unpowered vehicles and run on their own schedule (about $30 per year), separate from both motorhomes and small utility trailers.
More Washington calculators
RV Registration calculators for other states
Official Washington resources
Estimates here are informational — the state is the only source of an official quote.
Data last reviewed 2026-07-16.