Connecticut Business Entity Tax (BET) for LLCs

The Business Entity Tax (BET) is a separate Connecticut tax based on gross receipts — not profits. It applies to businesses (including LLCs) with Connecticut gross receipts exceeding $200,000. The rate is 0.75% on modified gross receipts. For the full tax picture, see our tax guide. For formation, see our LLC guide.

BET Overview

Detail Value
Rate 0.75% of modified gross receipts
Threshold Gross receipts exceeding $200,000
Cap Credit against CT income tax
Due date April 15 (or 15th of 4th month after fiscal year)
Filed with CT Department of Revenue Services
Form CT-1065/CT-1120SI (for pass-through entities)

What Are "Modified Gross Receipts"?

Modified gross receipts include:

How the BET Credit Works

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The BET operates as a minimum tax:

Practical effect: Profitable businesses with margins over ~11% will typically owe more in income tax than BET, so the BET becomes irrelevant. Low-margin, high-revenue businesses may owe BET as their minimum.

Who Is Most Affected

BET Calculation Example

LLC with $500,000 in CT gross receipts and $50,000 net income:

LLC with $500,000 in CT gross receipts and $100,000 net income:

FAQ

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Does the BET apply to single-member LLCs?

Yes. The BET applies to all business entities with CT gross receipts over $200,000, regardless of member count or federal tax classification.

Is the BET in addition to income tax?

Not exactly — it's a minimum. If your income tax exceeds the BET, you only pay income tax. The BET only costs you additional money when it exceeds what you'd owe in income tax alone.

Can I avoid the BET?

Only by keeping CT gross receipts under $200,000. There are no exemptions or deductions that reduce the BET calculation (it's based on gross receipts, not net income). The BET is one reason Connecticut is less favorable for high-revenue, low-margin businesses compared to states without gross receipts taxes.

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