Connecticut LLC Annual Compliance Checklist

Maintaining your Connecticut LLC in good standing requires meeting specific deadlines each year. Missing these can result in penalties, late fees, or administrative dissolution. Use this checklist to stay compliant.

For the formation process, see our formation guide.

Required Filings

Annual Report

• Due: between January 1 and March 31 each year
• Fee: $80
• Filed with: Connecticut Secretary of State
• Portal: portal.ct.gov/sots
• What it contains: Current registered agent info, principal address, member/manager names

Consequence of missing: Annual Report due between January 1 and March 31 each year. Failure to file for 2+ years leads to administrative dissolution.

Federal Tax Return

• Due: March 15 (partnerships/S-corps) or April 15 (single-member/sole proprietor)
• Extension: File Form 7004 for 6-month extension (partnerships) or Form 4868 (personal)
• What to file: Form 1065 (multi-member), Schedule C on Form 1040 (single-member disregarded entity), or Form 1120-S (S-corp election)

State Tax Obligations

Pass-through entity tax (PET) at 6.99% available as election. Business Entity Tax $250 minimum for LLCs taxed as corporations. No separate LLC-level tax for pass-through entities.

Quarterly Estimated Taxes

If you expect to owe $1,000+ in federal taxes:

• Q1: April 15
• Q2: June 15
• Q3: September 15
• Q4: January 15 (following year)

Maintenance Tasks

Registered agent

• Confirm your registered agent is still active and at the address on file
• If using a professional service, confirm renewal payment
• If your agent's address changes, file an update with Connecticut Secretary of State

Operating Agreement Review

Annually review and update if:

• Members changed
• Ownership percentages shifted
• Management structure evolved
• Capital contributions made

Business Licenses and Permits

• Verify all local business licenses are current
• Renew any expiring permits
• Confirm compliance with industry-specific regulations

Insurance Review

• General liability policy renewal
• Workers' compensation (if employees)
• Professional liability (if applicable)
• Adjust coverage as business grows

Calendar Summary

What Happens If You Miss a Deadline

1. Annual Report missed: Annual Report due between January 1 and March 31 each year. Failure to file for 2+ years leads to administrative dissolution.
2. Tax deadline missed: IRS and state penalties accrue (failure-to-file 5%/month, failure-to-pay 0.5%/month)
3. Registered agent lapses: The state may send notices to your last known address; eventual administrative dissolution risk

Tips for Staying Compliant

1. Set calendar reminders 30 days before each deadline
2. Use a professional registered agent service — we send filing reminders before deadlines
3. Automate estimated tax payments through EFTPS (Electronic Federal Tax Payment System)
4. Keep a compliance folder — all filings, receipts, and confirmations in one place
5. Review annually — dedicate one hour each January to review all compliance obligations

FAQ

What if my LLC had no income this year?

You must still file Annual Report and maintain registered agent regardless of income. Federal tax returns may still be required (Form 1065 for partnerships must be filed even with zero income).

Can I handle compliance myself?

Yes. All filings can be completed through portal.ct.gov/sots and irs.gov. No attorney or accountant is required for routine compliance, though they are helpful for tax planning.

What does administrative dissolution mean?

If you fail to file required reports, the state can involuntarily dissolve your LLC. This means you lose liability protection. See our reinstatement guide if this has happened.

For more guides, see our learning-center overview.