Article
6 min read
Understanding Payroll Taxes in Connecticut: A Complete Guide
US payroll
Author
Shannon Ongaro
Last Update
July 08, 2025
Table of Contents
Connecticut payroll taxes
Paying unemployment insurance (UI)
Paid Family and Medical Leave Tax (PFMLA)
Withholding personal income tax (PIT) from your Connecticut employees
Paying workers’ compensation (WC) in Connecticut
Additional Information
Simplify US payroll tax compliance with Deel
Key takeaways
- Connecticut employers must manage unemployment insurance, personal income tax, and workers’ compensation to comply with state payroll tax regulations.
- Understanding Connecticut’s state payroll and unemployment taxes is crucial for business owners to protect employees and ensure smooth payroll operations.
- Deel offers a comprehensive solution for US and international payroll management, simplifying the complex process of payroll compliance for businesses.
Understanding Connecticut withholding tax is essential for any employer managing payroll in the state.
In addition to federal obligations, businesses must comply with a range of state-level requirements, including unemployment insurance, personal income tax, and workers’ compensation.
This guide breaks down the key components of Connecticut’s payroll tax system to help employers stay compliant and avoid costly penalties.
Connecticut payroll taxes
Payroll taxes are administered by the Department of Revenue Services (DRS), the Connecticut Department of Labor (CTDOL), and the CT Paid Leave Authority.
Unlike other states, Connecticut does not allow municipalities to collect local taxes. Employers are responsible for handling both federal FICA taxes and Connecticut’s progressive income tax system, where withholding amounts increase with employee earnings.
Connecticut's payroll taxes include Unemployment Insurance (UI), Paid Family and Medical Leave Tax (PFMLA), and Connecticut Income Tax:
| Tax Type | Who Pays | Tax Rate | Taxable Wage Limit | Maximum Tax |
|---|---|---|---|---|
| Unemployment Insurance | Employer | 1.1% to 8.9% | $26,100 per employee per year | No maximum |
| Paid Family and Medical Leave Tax (PFMLA) | Employee | 0.5% | $176,100 per employee per year | $880.50 per employee per year |
| Connecticut Income Tax | Employee | 2% to 6.99% | No limit | No maximum |
See also: State-by-State Guide to Maternity Leave in the United States
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Paying unemployment insurance (UI)
Unemployment insurance (UI), also referred to as State Unemployment Insurance (SUI), provides temporary financial relief for eligible employees who become unemployed due to circumstances beyond their control. Employers are responsible for funding this national program which is administered by the US Department of Labor.
UI rates and requirements vary between states. In Connecticut, new employers pay a rate of 2.2% for about three years, after which rates range from 1.1% to 8.9% based on experience. Quarterly UI payments to CTDOL are due on April 30, July 31, October 31, and January 31.
Connecticut offers an online portal for employers to manage unemployment insurance contributions efficiently. By accessing the online portal, you can process your UI payments seamlessly.
In Connecticut, most nonprofits are responsible for all payroll taxes. Section 501(c)(3) nonprofits have the option to pay UI taxes as businesses or reimburse CT Department of Labor for UI benefits paid.
For further guidance and resources on paying unemployment insurance in Connecticut, refer to the Connecticut Department of Labor.
Paid Family and Medical Leave Tax (PFMLA)
Paid Family and Medical Leave Tax (PFMLA) provides temporary financial relief for employees taking leave for family or health reasons. FMLA is funded by employee wage deductions, ranging from 0.5% up to the Social Security contribution base.
Employers are responsible for withholding and remitting the deductions through quarterly payments to the CT Paid Leave Authority.
The CT Paid Leave Authority's online portal makes remitting deductions seamless. You must make the quarterly payments by the due dates: April 30, July 31, October 31, and January 31.
See also: What is Connecticut Paid Leave (CTPL) Insurance in 2025?
Withholding personal income tax (PIT) from your Connecticut employees
Personal income tax (PIT) is also known as individual income tax or state income tax. PIT is levied on the income of Connecticut residents and is deducted directly from the employee’s wages by the employer.
As the employer, you are responsible for withholding and remitting the correct amount to the state. The DRS can audit state tax returns to ensure correct tax payments.
Connecticut’s Department of Revenue Services' online portal facilitates the smooth and compliant payment of withheld personal income tax.
For more detailed information on managing withholding tax in Connecticut, refer to the Connecticut Department of Revenue Services resources.
Paying workers’ compensation (WC) in Connecticut
Workers' compensation is an essential insurance coverage for employees, providing protection in case of work-related injuries or illnesses. As a business owner in Connecticut, you are required to provide this insurance to your employees, even if you have just one worker.
To ensure you have the appropriate workers’ compensation coverage, employers should obtain insurance from a qualified commercial carrier within the state.
The Connecticut Workers’ Compensation Commission offers valuable information on finding a qualified commercial carrier that meets the state’s worker’s compensation insurance regulations.
Additional Information
Audit Possibility: The DRS can audit state tax returns to ensure correct tax payments.
Nonprofit Organizations: Most nonprofits are responsible for all payroll taxes. Section 501(c)(3) nonprofits have the option to pay UI taxes like businesses or reimburse CTDOL for UI benefits paid.
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Simplify US payroll tax compliance with Deel
While this guide provides essential information on Connecticut payroll taxes, payroll compliance and state requirements extend beyond what is covered above. To streamline the process and ensure full compliance, companies can turn to Deel.
Pro Tip: Want a quick breakdown of how hiring and payroll compliance works in the U.S.? Watch this short webinar recap by Deel to understand the key steps and risks—especially helpful if you're scaling across multiple states.
Deel offers a comprehensive solution for managing US and international payroll, including payments, taxes, worker classification, and more. Speak with an expert today to see how you can streamline your US payroll processes and ensure compliance with state regulations.
Disclaimer: This article is provided for general informational purposes and should not be treated as legal or tax advice. Consult a professional before proceeding.
FAQs
How does Connecticut tax non-residents?
If you are a nonresident or a part‑year resident, your tax liability is computed based upon the greater of your Connecticut adjusted gross income or your total income from Connecticut sources. You must calculate the tax in the same manner as a resident individual.
How to get a CT state withholding number?
To get a Connecticut withholding tax number, you need to register your business with the Department of Revenue Services (DRS) through the myconneCT portal:
- Select "Create a Username" and follow the on-screen prompts.
- Once registered, you'll receive your Connecticut Tax Registration Number and tax deposit schedule.
- If registering online, expect to receive the number within 10 business days. If registering in person, you may receive it immediately.
- Note: The last three digits of every Connecticut withholding account number are always "000".
This number is essential for filing and remitting withholding taxes as an employer in Connecticut.
What is Connecticut state withholding on IRA distributions?
IRA distributions to Connecticut residents are generally subject to withholding unless the individual elects not to have taxes withheld. The standard rate is 6.99%, and it must be reported using Form CT-945.
Does Connecticut have a use tax?
Yes. Connecticut imposes a use tax on out-of-state purchases that are used, stored, or otherwise consumed in Connecticut if no sales tax was collected. This is separate from payroll or income tax but is important for businesses purchasing goods online.
Who pays the most income tax in Connecticut?
Connecticut has a progressive income tax system. Individuals with higher earnings pay higher rates, ranging from 3% to 6.99%. The top earners, including high-salary professionals and executives, contribute the majority of income tax revenue.
What is CT 941 Reconciliation of Withholding?
Form CT-941 is a quarterly return used to reconcile income tax withholding by Connecticut employers. It must be filed online even if no tax is due for a given period. Due dates are typically April 30, July 31, October 31, and January 31.
What is Form CT-W4?
Form CT-W4 is the Employee’s Withholding Certificate for the state of Connecticut. It is used by employees to tell their employer how much Connecticut income tax to withhold from their wages.
About the author
Shannon Ongaro is a content marketing manager and trained journalist with over a decade of experience producing content that supports franchisees, small businesses, and global enterprises. Over the years, she’s covered topics such as payroll, HR tech, workplace culture, and more. At Deel, Shannon specializes in thought leadership and global payroll content.
