Wyoming Sales Tax Calculator (2026) — Add or Reverse Tax
Wyoming's combined sales tax rate is 5.56% (4.00% state + 1.56% average local). Use the calculator below to add Wyoming sales tax to a price, or reverse a tax-included total to find the pre-tax price and exact tax amount.
How to use this calculator:
- Adding tax — enter a pre-tax price, pick "Add tax to price," and the calculator applies the Wyoming rate to show the tax amount and final total.
- Reversing (extracting) tax — enter a total that already includes tax, pick "Extract tax from total," and the calculator divides by 1 + the rate to isolate the pre-tax price and the exact tax paid.
- Pick the rate that matches your situation: the average combined rate is a good statewide estimate, but the state-only or maximum-local rate is more precise if you know the exact city or county.
Understanding Wyoming Sales Tax
Wyoming's state sales tax rate is 4.00%, and local jurisdictions add an average of 1.56% on top, bringing the typical combined rate to 5.56%. Rates vary by city and county — the highest combined rate in Wyoming can reach 7.00%.
Wyoming has no state income tax and keeps sales tax low by relying heavily on severance taxes from oil, gas, coal, and mineral extraction.
Wyoming has no state income tax, which shapes how much the state relies on sales tax revenue relative to other funding sources.
Groceries
Exempt from Wyoming state sales tax.
Largest city
Cheyenne
State income tax
No
Why Reverse Sales Tax Calculation Matters
Receipts, invoices, and marketplace payouts usually show only the tax-included total — not the pre-tax price. Reversing the calculation matters for bookkeeping (separating revenue from tax collected), expense reports (reimbursing only the pre-tax cost), and price comparisons (checking what an item actually costs before Wyoming's tax is applied). Because dividing by (1 + rate) is not the same as simply subtracting the rate from the total, doing this by hand is a common source of errors — the calculator above handles it exactly.
Wyoming Taxability at a Glance
🛒 Groceries
Exempt
👕 Clothing
Taxable
💊 Prescription drugs
Exempt
History & Rate Breakdown
Wyoming's 4% state sales tax rate has not changed since 1937, making it one of the most stable rates in the country. Rather than raising the state rate, Wyoming lets individual counties add optional local taxes through voter approval — the layered system in place today.
Wyoming's rate is built in three layers: a 4% base state sales tax that applies statewide, an optional 1% "5th penny" general-purpose county tax (currently adopted by 21 of Wyoming's 23 counties — only Park and Sublette do not levy it), and an optional 1% "6th penny" special-purpose tax that some counties add temporarily to fund a specific capital project, such as a new school or road. Of the base 4% state tax collected, the state keeps 69% for its general fund and returns 31% to the county where the sale occurred.
Where the Money Goes
Wyoming leans on a three-legged revenue stool: property taxes (about 35% of state and local revenue), sales taxes (about 29%), and severance taxes on oil, gas, coal, and mineral extraction (folded into the "other taxes" category). Because sales tax is a comparatively small share of the total, Wyoming has kept its base rate flat since 1937 even as many other states raised theirs — mineral severance revenue absorbs pressure that would otherwise fall on sales or income tax.
Business Use Case: Registering & Collecting Wyoming Sales Tax
An online furniture retailer with no physical presence in Wyoming sells $120,000 of taxable goods to Wyoming customers in a year, crossing the state's $100,000 economic nexus threshold. The retailer must register with the Wyoming Department of Revenue, then collect the correct rate for each delivery county — 4% in Park or Sublette County, but 5% or 6% in a county that has adopted the 5th and/or 6th penny options — and remit returns on the assigned filing schedule.
Sales Tax Terms Glossary
Combined rate
The state sales tax rate plus any applicable local (city, county, or special district) rates — the actual rate charged at checkout in a given location.
Reverse sales tax
The process of working backward from a tax-included total to find the pre-tax price and the exact tax amount, using total ÷ (1 + rate) = pre-tax price.
Economic nexus
A sales threshold (in dollars, transaction count, or both) that obligates an out-of-state seller to collect and remit sales tax even without a physical presence in the state.
Marketplace facilitator
A platform (e.g. Amazon, Etsy, eBay) that collects and remits sales tax on behalf of third-party sellers under most states’ marketplace facilitator laws.
Real-World Example
A $500.00 purchase in Wyoming at the average combined rate of 5.56%:
- Tax amount: $500.00 × 5.56% = $27.80
- Total price: $500.00 + $27.80 = $527.80
Wyoming Sales Tax Compliance for Sellers
Remote and online sellers establish economic nexus in Wyoming once they exceed $100,000.00 in annual sales (no separate transaction-count test). Once nexus is established, a seller must register with the state, collect Wyoming sales tax at checkout, and file returns on the state's required schedule. Marketplace facilitators (Amazon, Etsy, eBay, Walmart) generally collect and remit on behalf of third-party sellers automatically.
Frequently Asked Questions — Wyoming Sales Tax
What is the sales tax rate in Wyoming?▾
Does Wyoming tax groceries?▾
Does Wyoming have a state income tax?▾
When do online sellers need to collect Wyoming sales tax?▾
How do I calculate Wyoming sales tax on a purchase?▾
How do I reverse Wyoming sales tax to find the price before tax?▾
What is the formula to back out sales tax from a receipt in Wyoming?▾
Is Jackson Hole's sales tax different from the rest of Wyoming?▾
Why is Wyoming sales tax so low compared to other states?▾
References & Sources
Rates last verified January 2026. Wyoming sales tax rates and thresholds can change — always confirm current figures with the Wyoming Department of Revenue before filing or invoicing. This tool is for estimation and educational purposes only and is not tax, legal, or accounting advice.
Jordan Hayes
Verified AuthorLead Content Editor & Personal Finance Specialist
Jordan Hayes is a personal finance content strategist with 9+ years building educational finance and health resources. He has written and fact-checked over 200 personal finance guides covering mortgage amortization, retirement planning, tax strategy, and budgeting. His work applies IRS publications, Federal Reserve data, and peer-reviewed research to make complex calculations accessible.