Wyoming boat buyers pay sales or use tax at the combined state-plus-local rate for the delivery county, then take proof of tax paid to Wyoming Game and Fish before the motorboat can be registered. The state portion is 4%. Locals and resort options can push the combined rate higher—often into a roughly 4%–9% band depending on the county chart. A $50,000 boat at 4% only is $2,000; at a 6% combined rate it is $3,000.
How much is Wyoming boat sales tax?
Wyoming applies general sales and use tax to taxable boat purchases. Dealers collect tax on the invoice. Private-party and many out-of-state purchases go through the County Treasurer: you present a bill of sale, pay the combined rate, and receive a receipt. Game and Fish will not complete motorboat registration without proof that sales or use tax was paid.
Always start with the Wyoming Department of Revenue sales tax rate chart for the county (and any local or resort add-ons) where the boat is delivered or first used. Do not stop at the 4% state line if your county publishes a higher combined rate.
Step-by-step calculation formula
Step 1 — Set the taxable price
Use the purchase price on the dealer invoice or private bill of sale. Trade-in treatment follows Wyoming’s general sales tax rules when the Department of Revenue documents them for your transaction type—if your paperwork is unclear, ask DOR or the County Treasurer before subtracting anything.
Example A — Dealer invoice
Example B — Private bill of sale
Step 2 — Look up the combined rate
State tax is 4%. Local options vary by county. Combined rates commonly fall between about 4% and 9%. Confirm the live chart; the percentages below are research worked examples, not a substitute for the DOR table.
Example A — 4% combined (state only illustration)
Example B — 6% combined county illustration
Step 3 — Decide who you pay
If a Wyoming dealer collected the correct combined tax, keep that receipt for Game and Fish. If not, pay the County Treasurer and keep that receipt. Out-of-state purchases often follow a use-tax path to the treasurer when Wyoming tax is still due; ask DOR about credit for tax already paid to another state.
Example A — Dealer collects
Example B — Private sale
Step 4 — Register the motorboat with Game and Fish
Wyoming Game and Fish requires motorboat registration for vessels with motors, including electric trolling motors. County-issued title is required for new and transfer situations described in WGFD guidance. AIS (aquatic invasive species) decal requirements apply per current WGFD rules. Dollar amounts for one-year, three-year, and AIS packages change—read the fee line on the current watercraft application or WGFD fee notice rather than copying an old third-party figure.
Example A — Gas outboard runabout
Example B — Canoe with electric trolling motor
Complete worked example
Private purchase of a $50,000 motorboat delivered in a county where the Department of Revenue combined rate is 6%. No dealer collected tax. No out-of-state credit. Buyer will register with Game and Fish after paying the treasurer.
$50,000 private sale · 6% combined · treasurer path
Who bills what
| Step | Agency | What you pay / show |
|---|---|---|
| Sales or use tax | Dealer or County Treasurer | Combined rate × taxable price |
| Rate lookup | Wyoming DOR | Official county/local chart |
| Title | County process per WGFD | New/transfer title as required |
| Registration + AIS | Wyoming Game & Fish | Current WGFD posted fees after tax proof |
County treasurer pages (Sweetwater, Uinta, and others) repeat the same theme: Game and Fish expects proof of tax paid before registration moves forward.
Gifts, inheritance, and documented vessels
Donations and inheritances are not automatic $0 tax on this page. Confirm with the Wyoming Department of Revenue whether your transfer is nontaxable; you may still need title and Game and Fish paperwork. Documented vessels can still owe Wyoming sales or use tax on a taxable purchase, and WGFD registration rules still matter when the vessel is a motorboat under state guidance.
FAQs
Is Wyoming boat tax just 4%?
The state rate is 4%, but local and resort options often raise the combined rate. Use the DOR chart for your county.
Can I register first and pay tax later?
No. The watercraft application process requires proof that sales or use tax was paid.
Does an electric trolling motor trigger registration?
Yes. WGFD treats motorboats—including those with electric trolling motors—as registrable.
What if I bought out of state?
Use tax may still be due to the County Treasurer if Wyoming tax was not paid. Ask DOR about credit for tax already paid elsewhere.
Are Game and Fish fees included in the tax math?
No. Tax is the combined sales/use percentage. Registration and AIS fees are separate—confirm current dollars on official WGFD materials.
Conclusion
Estimate Wyoming boat tax by multiplying the taxable purchase price by the combined DOR rate for the delivery county, then budget separately for Game and Fish registration and AIS after you have a dealer or County Treasurer receipt. Never treat 4% as the whole story when locals apply, and never invent registration dollars—use the current WGFD application. Wyoming DOR, your County Treasurer, and Game and Fish set the amounts this page only estimates.
Authoritative references
- Wyoming Department of Revenue — official sales tax rate charts (4% state + local)
- Sweetwater County Treasurer — sales tax on boats
- Uinta County — sales tax on recreational vehicles / boats
- Wyoming Game and Fish — Watercraft Application (proof of tax paid; motorboat rules)
This page estimates Wyoming boat sales and use tax from official Department of Revenue and county treasurer materials. Your final tax is set by the Wyoming Department of Revenue and the County Treasurer; registration and AIS fees are set by Wyoming Game and Fish.