Connecticut W-2 Filing
Requirements 2026
Stay compliant with Connecticut state filing requirements and file your W-2 forms for both federal and state through 1099ly.
- File Connecticut W-2 forms online in minutes
- Submit Form CT-W3 at no extra cost
- Distribute recipient copies via postal mail or eDelivery
- Get reminders for Connecticut W-2 filing deadlines
Note: Employers in Connecticut are required to file W-2 forms for all employees, regardless of whether state income tax was withheld. If Connecticut state tax was withheld, you must also submit Form CT-W3 (Annual Reconciliation of Withholding) along with your W-2 forms.
Filing Requirement
W-2 Filing Requirements by Connecticut State
Complete your Connecticut W-2 filing with ease and stay compliant with the state's reporting requirements.
Form CT-W3 (Reconciliation)
This form is required if Connecticut state tax was withheld. It reports the total income taxes withheld and remitted to the state.
State Filing Deadlines
W-2 Filing Deadlines for Connecticut State
Filing Information
Information Required to File W-2 with Connecticut
| Category | Field | Details |
|---|---|---|
| Employer Information | Employer Identification Number (EIN) | Your unique nine-digit identifier assigned by the IRS to your business. |
| Business Name and Address | Enter your legal business name and physical business address. | |
| Employee Information | Employee's Name | Full legal name of the employee as it appears on their Social Security card. |
| Employee's Social Security Number (SSN) | A unique nine-digit number assigned by the Social Security Administration. | |
| Employee's Address | Current mailing address of the employee. | |
| Wage and Tax Information | Total Wages Paid | Total amount of taxable wages, tips, and other compensation paid to the employee throughout the year. |
| Federal Income Tax Withheld | Total federal income tax withheld from the employee's wages. | |
| Social Security Wages and Tax Withheld | Total wages subject to Social Security tax and the amount withheld. | |
| Medicare Wages and Tax Withheld | Total wages subject to Medicare tax and the amount withheld. | |
| State Income Tax Withheld | Total amount of Connecticut state income tax withheld from the employee's wages. | |
| State-Specific Information | Connecticut State Tax Withholding | Indicate if Connecticut state tax was withheld. If so, you need to file Form CT-W3 (Reconciliation) along with Form W-2. |
Ready to eFile W-2 forms with the State of Connecticut?
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File W-2 Forms with a Trusted State Filing Solution
Connecticut has its own state requirements for W-2 filings, and 1099ly is here to help you meet them with less effort and less risk of errors or rejected submissions.
Accuracy Checks
Automatic checks run against your data before submission, catching errors such as missing information or mismatched EINs and SSNs early.
Data Collection
Collect W-2 details from your employees with secure request links instead of chasing spreadsheets over email.
State-Specific Compliance
Every state has its own rules, formats, and reconciliation forms. We apply the right ones so you don't have to track them.
Real-Time Updates
Follow each filing from submission to acceptance, with status updates the moment the SSA or the state responds.
Quick and Flexible Reporting
Download filing summaries and reports whenever you need them, whether for internal review or an audit request.
Bulk Filing Capabilities
Upload a spreadsheet or connect your payroll data to file hundreds of W-2 forms in a single submission.
Secure eFiling
Your data is encrypted in transit and at rest, with multi-factor authentication protecting every account.
Address Validation
Recipient addresses are validated against USPS records before copies go out, reducing returned and undelivered mail.
How to File?
File W-2 Forms with the SSA and Connecticut State Using 1099ly
Follow these steps to file your W-2 forms. Get Early Access to get started.
Step 01 — Create your free 1099ly account and sign in to the dashboard.
Pricing Calculator
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10 forms · 1–10 forms tier · $3.99 per form
Your total
$39.90
Your Connecticut state filing is included in the per-form price — there is no separate state charge. See the full breakdown on our pricing page.
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