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 and marketplace payouts usually show only the tax-included total, so separating revenue from tax collected — for bookkeeping, expense reports, or checking what an item costs before Wyoming's tax is applied — means working backward from that total. Dividing by (1 + rate) isn't the same as subtracting the rate, which is why the calculator above handles it exactly.
Wyoming Taxability at a Glance
🛒 Groceries
Exempt
👕 Clothing
Taxable
💊 Prescription drugs
Exempt
How Wyoming Fits Into the US Sales Tax System
The United States has no federal sales tax — unlike VAT/GST countries where a national rate applies everywhere, US sales tax is set entirely at the state level, and each of the 50 states (plus DC) independently decides whether to levy one, what the rate is, and what's exempt. Wyoming is one of the 45 states (plus DC) that levies a general sales tax. States can also authorize cities, counties, and special districts to add their own local rate on top of the state rate — which is why the "combined rate" shown on this page is a blend, not a single fixed number, and why it can differ from the state rate alone by several percentage points depending on the exact delivery address.
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.
Key terms: combined rate — state rate plus applicable local add-ons; reverse sales tax — working backward from a tax-included total via total ÷ (1 + rate); economic nexus — a sales threshold that obligates an out-of-state seller to collect tax without a physical presence; marketplace facilitator — a platform that remits tax on behalf of third-party sellers.
Real-World Example: Adding Tax to a Price
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
Real-World Example: Extracting Tax From a Receipt Total
A receipt shows a $749.99 tax-included total in Wyoming at the average combined rate of 5.56%:
- Pre-tax price: $749.99 ÷ (1 + 5.56%) = $710.49
- Tax amount: $749.99 − $710.49 = $39.50
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
Methodology: the combined rate shown is the state rate plus the population-weighted average of local (city/county/district) rates reported by the Tax Foundation for 2026; it is an average, not the exact rate for any single address — use the county table above where available, or confirm the exact local add-on with the Wyoming Department of Revenue, for a specific delivery address. Economic nexus thresholds are sourced from the Sales Tax Institute's Economic Nexus State Guide.
Rates last verified January 2026. Wyoming sales tax rates and thresholds change over time — 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 AuthorPersonal Finance Content Strategist
Jordan is a personal finance content strategist with 9+ years writing about mortgages, retirement, tax strategy, and budgeting. Every guide is cross-referenced with IRS publications, Federal Reserve data, and CFPB guidance to make complex calculations accessible. Editor at CalculatorApp.me.
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Tax-rate data, review & limitations
Jurisdiction: Wyoming, United States. Effective date: January 1, 2026. Reviewed by CalculatorApp.me editorial staff on July 26, 2026; next scheduled review: October 26, 2026.
Rates are reference estimates, not tax advice. Local rules, exemptions, filing status, and effective dates can change the amount due.
Primary sources
- Tax Foundation, 2026 State and Local Sales Tax Rates
- Relevant state department of revenue guidance