Connecticut Sales Tax Calculator (2026) — Add or Reverse Tax
Connecticut's combined sales tax rate is 6.35% (6.35% state). Use the calculator below to add Connecticut 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 Connecticut 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 Connecticut Sales Tax
Connecticut's state sales tax rate is 6.35%, with no additional local sales tax in most of the state.
Connecticut also levies a state income tax, which shapes how much the state relies on sales tax revenue relative to other funding sources.
Groceries
Exempt from Connecticut state sales tax.
Largest city
Bridgeport
State income tax
Yes
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 Connecticut'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.
Connecticut Taxability at a Glance
🛒 Groceries
Exempt
👕 Clothing
Taxable
💊 Prescription drugs
Exempt
How Connecticut 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. Connecticut 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
Connecticut's sales and use tax took effect July 1, 1947, and has operated as a single flat statewide rate ever since — Connecticut is one of the few states with no local sales tax layered on top of the state rate at all.
Connecticut's 6.35% rate is entirely state-level; there is no county or city sales tax anywhere in Connecticut. The one exception is a two-tier luxury structure: motor vehicles over $50,000, jewelry over $5,000, and clothing/footwear over $1,000 are taxed at a higher 7.75% luxury rate, while clothing and footwear priced $50 or under are fully exempt.
Where the Money Goes
Connecticut's sales tax revenue supplements the broader state budget alongside its income tax, funding general government operations without any local sales tax revenue-sharing since there are no local rates.
Business Use Case: Registering & Collecting Connecticut Sales Tax
An out-of-state retailer whose Connecticut sales exceed $100,000 (or 200 separate transactions) must register with the Department of Revenue Services, and — unusually for a flat-rate state — must also track whether any individual item crosses the $1,000 luxury clothing threshold or $5,000 jewelry threshold, since those trigger the higher 7.75% rate regardless of the buyer's total order size.
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 Connecticut at the average combined rate of 6.35%:
- Tax amount: $500.00 × 6.35% = $31.75
- Total price: $500.00 + $31.75 = $531.75
Real-World Example: Extracting Tax From a Receipt Total
A receipt shows a $749.99 tax-included total in Connecticut at the average combined rate of 6.35%:
- Pre-tax price: $749.99 ÷ (1 + 6.35%) = $705.21
- Tax amount: $749.99 − $705.21 = $44.78
Connecticut Sales Tax Compliance for Sellers
Remote and online sellers establish economic nexus in Connecticut once they exceed $100,000.00 in annual sales or 200+ separate transactions. Once nexus is established, a seller must register with the state, collect Connecticut 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 — Connecticut Sales Tax
What is the sales tax rate in Connecticut?▾
Does Connecticut tax groceries?▾
Does Connecticut have a state income tax?▾
When do online sellers need to collect Connecticut sales tax?▾
How do I calculate Connecticut sales tax on a purchase?▾
How do I reverse Connecticut sales tax to find the price before tax?▾
What is the formula to back out sales tax from a receipt in Connecticut?▾
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 Connecticut 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. Connecticut sales tax rates and thresholds change over time — always confirm current figures with the Connecticut 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: Connecticut, 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