Connecticut economic nexus threshold
You likely have economic nexus in Connecticut only if you cross BOTH $100,000 in gross sales AND 200 transactions in the 12 months ending Sept 30.
- Revenue threshold
- $100,000
- Transactions
- 200
- Logic
- Revenue and transactions
- Measured over
- 12 months ending Sept 30
Check your Connecticut sales
How Connecticut’s threshold works
If you sell into Connecticutwithout a physical presence there, you may still be required to register for, collect, and remit sales tax once your activity crosses the state’s economic-nexus threshold. Connecticut measures this over the 12 months ending Sept 30.
Connecticut is one of the few states that requires both thresholds to be met. Crossing only the revenue figure or only the transaction count is not enough on its own.
Note: BOTH $100k AND 200 transactions required. Measured over the 12 months ending Sept 30.
What counts toward the threshold
Connecticut generally counts your gross sales into the state, typically including taxable and many exempt or wholesale sales, not just your profit. The transaction count is the number of separate sales delivered into the state. Sales made through a marketplace that already collects tax for you may be counted differently; this checker measures your direct sales.
What to do if you’ve crossed it
- Register for a sales-tax permit with the Connecticut DRS.
- Start collecting Connecticut sales tax at the correct rate.
- File returns and remit on the state’s schedule.
- Consider a sales-tax professional or automation if you’re near the line in several states.
Deadlines and rates vary by state, so confirm the specifics before you act.
Connecticut sales tax nexus FAQ
- Do I owe sales tax in Connecticut?
- You likely have economic nexus in Connecticut only if you cross BOTH $100,000 in gross sales AND 200 transactions in the 12 months ending Sept 30. If you have crossed it, you may need to register, collect, and remit sales tax. This is general information, not tax advice.
- What is Connecticut's economic nexus threshold?
- $100,000 in gross sales and 200 transactions, measured over the 12 months ending Sept 30.
- How many transactions trigger nexus in Connecticut?
- 200 transactions, but in Connecticut you must also exceed $100,000 in sales, because both prongs are required.
- What if I only sell through a marketplace like Amazon or Etsy?
- Marketplace facilitators generally collect and remit sales tax on sales made through their platform, which can change who is responsible. This tool covers economic nexus from your direct sales; confirm marketplace-facilitated sales separately.
Selling into multiple states? Check them all at once.
Open the multi-state calculatorThis tool provides general information, not tax or legal advice. Economic-nexus rules change and vary by state; verify your obligations with each state’s Department of Revenue or a qualified tax professional before acting.
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