What Is Connecticut Payroll Tax?
Connecticut payroll tax refers to the state payroll taxes that employers must withhold from employee wages or pay directly to state agencies. These taxes fund unemployment benefits, the state's paid family and medical leave program, and the state's income tax system.
Connecticut payroll taxes are administered by three separate bodies: the Connecticut Department of Labor, or CTDOL (unemployment insurance), the Connecticut Department of Revenue Services, or DRS (state income tax withholding), and the CT Paid Leave Authority (paid family and medical leave contributions). Connecticut has no state disability insurance program separate from its paid leave program, and no local income tax anywhere in the state.
Most Connecticut employers are responsible for the following payroll tax requirements:
- Unemployment Insurance (UI), administered by the CTDOL
- Connecticut Personal Income Tax withholding, administered by the DRS, at graduated rates
- CT Paid Leave (CTPL) contributions, funded entirely by employees but withheld and remitted by employers
Connecticut Payroll Taxes at a Glance
| Payroll Tax | Paid By | Purpose |
|---|---|---|
| Unemployment Insurance (UI) | Employer | Provides temporary income for eligible unemployed workers |
| Personal Income Tax (state) | Employee (withheld by employer) | Graduated state income tax withheld from employee wages |
| CT Paid Leave (CTPL) | Employee (withheld by employer) | Funds paid family and medical leave benefits 100% employee-funded |
Understanding who pays each tax helps employers avoid a common Connecticut misconception: CTPL is sometimes assumed to be split like Colorado's or Massachusetts's paid leave programs, but Connecticut's version is funded entirely by employees, with employers responsible only for withholding and remitting it.
Connecticut Employer Payroll Tax Responsibilities
Every employer with workers in Connecticut has payroll tax responsibilities beyond simply issuing paychecks. Depending on your business, you'll generally need to:
- Register your business with the CTDOL for unemployment insurance and with the DRS for withholding tax.
- Register separately with the CT Paid Leave Authority.
- Calculate taxable wages up to the annual UI wage base.
- Withhold state income tax and the employee's CTPL contribution from every paycheck.
- Pay employer UI contributions.
- File quarterly UI wage reports, quarterly CTPL contribution reports, and periodic state withholding returns.
- Provide employees with the required Notice of Employee Rights Under CT FMLA and CT Paid Leave, at hire and annually thereafter.
- Maintain payroll records for state compliance.
Many businesses automate these tasks using payroll software, reducing the risk of manual errors and missed deadlines.
Types of Connecticut Payroll Taxes
Unemployment Insurance (UI)
Unemployment Insurance is an employer-funded payroll tax administered by the CTDOL that provides temporary financial assistance to eligible workers who lose their jobs through no fault of their own.
Employers pay this tax directly it is never deducted from employee paychecks.
Connecticut has been actively reforming its UI system under Public Acts 21-200 and 22-67, aimed at improving the state's UI Trust Fund solvency, reducing employer costs, and indexing various tax and benefit measures for long-term predictability. New employers pay a flat introductory rate for approximately their first three years, after which the CTDOL assigns an experience-based rate.
Key Facts
- Paid entirely by employers Connecticut has no employee UI contribution
- Calculated on an annual wage base that has been increasing each year as part of the state's UI reform effort
- New employers pay a flat introductory rate for about three years before becoming experience-rated
- Experience-rated employers are assigned a charged rate based on benefit charges divided by taxable payroll, plus a separate Fund Solvency Tax rate applied to all employers
- Connecticut's reforms include a divisor adjustment designed to minimize the short-term impact of wage base increases on employers' charged rates
- Must be reported to the CTDOL every quarter
Connecticut Personal Income Tax (PIT) Withholding
Connecticut uses a graduated personal income tax structure, with rates that increase as an employee's income increases.
Employers are responsible for:
- Withholding the correct graduated amount from every paycheck, based on current DRS withholding tables and the employee's Form CT-W4 elections
- Reporting withholding to the Connecticut Department of Revenue Services
- Depositing withheld taxes according to a schedule based on total withholding liability
- Filing periodic withholding returns and an annual reconciliation, including W-2 filing with the state
Connecticut has no local income tax employees pay the same graduated state rate regardless of which Connecticut city or town they live or work in.
CT Paid Leave (CTPL)
CT Paid Leave is Connecticut's state-run paid family and medical leave program, established under the state's Paid Family and Medical Leave Act (PFMLA). Unlike Colorado's FAMLI or New York's PFL/DBL combination, Connecticut's program is funded entirely by employees employers are not required to contribute any share, though they are responsible for withholding, remitting, and administering the program correctly.
Key Facts
- 100% employee-funded the CT Paid Leave Board of Directors voted to maintain the contribution rate at 0.5% of employee wages for 2026, unchanged from 2025
- Applies to total wages (including salary, hourly pay, vacation pay, holiday pay, tips, commissions, severance pay, and the cash value of in-kind payments) up to the federal Social Security wage cap ($184,500 for 2026), for a maximum annual employee contribution of $922.50
- Employers are not required to contribute but may voluntarily pay all or part of the employee's contribution
- Nearly all employers with one or more Connecticut employees must provide CTPL coverage, with limited exceptions for federal, state, and municipal government employers
- Employees cannot opt out of CTPL; sole proprietors and self-employed individuals may opt in voluntarily
- Employers may apply to offer an approved private plan instead of the state plan, provided it offers equal or better benefits and a majority of the employer's Connecticut employees vote in favor of it
- Contributions are withheld from every paycheck and remitted to the CT Paid Leave Authority on a quarterly basis, separate from UI and income tax filings
- If an employee works for more than one employer, each employer withholds and remits contributions independently until that employee reaches the Social Security wage cap with that specific employer
Which Payroll Taxes Are Paid by Employers vs Employees?
| Tax | Employer Pays | Employee Pays |
|---|---|---|
| Unemployment Insurance (UI) | YES | NO |
| Personal Income Tax (state) | NO | Withheld from wages (graduated) |
| CT Paid Leave (CTPL) | NO (optional to cover voluntarily) | Withheld from wages (0.5%, capped) |
Connecticut places the entire unemployment tax burden on the employer, while both income tax withholding and CTPL contributions are funded entirely by employees a genuinely different split from states like Colorado or New York, where paid leave costs are shared or partially employer-funded.
Connecticut Payroll Tax Rates for Employers
Understanding current Connecticut payroll tax rates is essential for calculating payroll accurately. Several of these rates and wage bases change annually as part of the state's ongoing UI reform schedule always verify the latest figures before processing payroll.
Connecticut Payroll Tax Rates at a Glance
| Payroll Tax | Who Pays | General Rate | Taxable Wage Base |
|---|---|---|---|
| Unemployment Insurance (UI) | Employer | New employers: 1.9% for 2026 (down from 2.2% in 2025). Experienced employers: 1.1% to 9.9%, though charged rates are reduced by a divisor for 2026, capping the effective maximum at 8.9%. All employers also pay a 1.0% Fund Solvency Tax | $27,000 for 2026, up from $26,100 in 2025 |
| Personal Income Tax (state) | Employee | Graduated, 3% to 6.99% | Applies to taxable wages under current DRS withholding tables |
| CT Paid Leave (CTPL) | Employee | 0.5%, unchanged for 2026 | Applies to gross wages up to the Social Security wage cap ($184,500 for 2026) |
According to the CTDOL's official 2026 rate notice, Connecticut's UI taxable wage base increased to $27,000 for 2026, and the new employer rate decreased to 1.9%. Connecticut also avoided a FUTA credit reduction for 2026 by repaying its outstanding federal unemployment loan balance before the November 2025 deadline. The CT Paid Leave Authority separately confirmed no change to the 0.5% CTPL contribution rate for 2026.
Instead of memorizing a specific rate, employers should focus on reviewing their annual CTDOL rate notice, confirming the current CTPL rate through the CT Paid Leave Authority, and filing returns on time.
Understanding Taxable Wages
Not every Connecticut payroll tax applies to wages the same way. Depending on the tax involved, taxable wages may include:
- Hourly wages
- Salaries
- Bonuses
- Overtime pay
- Commissions
- Tips, vacation pay, holiday pay, and severance pay (specifically included under CTPL's definition of total wages)
- Certain taxable fringe benefits
UI tax applies only up to the annual wage base, CTPL applies up to the Social Security wage cap, and state income tax withholding applies more broadly with no separate wage base cap. Understanding which wage rules apply to which tax helps reduce calculation errors.
Connecticut Payroll Tax Filing Deadlines
Meeting payroll tax deadlines is just as important as calculating taxes correctly. Late filings or payments can lead to penalties and interest charges.
Unemployment Insurance and CT Paid Leave (Quarterly)
| Reporting Quarter | Filing Deadline |
|---|---|
| January – March | April 30 |
| April – June | July 31 |
| July – September | October 31 |
| October – December | January 31 |
UI wage reports are filed with the CTDOL; CTPL contributions are reported and remitted separately to the CT Paid Leave Authority, on the same quarterly cadence.
State Income Tax Withholding
Connecticut income tax withholding deposit frequency depends on the amount withheld, ranging from quarterly for smaller withholders to more frequent schedules for larger ones, with an annual reconciliation required regardless of deposit frequency.
If a deadline falls on a weekend or state holiday, the due date generally moves to the next business day. Since Connecticut requires filings with three separate systems (CTDOL, DRS, and CT Paid Leave), it's worth tracking each independently rather than assuming a single combined filing covers all of them.
How to Register for Connecticut Payroll Taxes
Before paying employees, businesses typically need to register with all three Connecticut payroll tax systems.
State registration: Employers register with the CTDOL for unemployment insurance and with the DRS for withholding tax.
CT Paid Leave registration: Employers register separately with the CT Paid Leave Authority, generally as soon as they have one or more Connecticut employees.
During registration, you'll generally need information such as:
- Legal business name
- Federal Employer Identification Number (EIN)
- Business entity type
- Business address
- Owner or responsible party information
- Date employees first performed services in Connecticut
- Estimated payroll information
How to File Connecticut Payroll Taxes
Filing payroll taxes in Connecticut involves managing three related but separate systems. A typical filing process includes:
Step 1: Calculate Employee Wages
Determine each employee's gross wages, including regular pay, overtime, bonuses, commissions, tips, and other taxable compensation.
Step 2: Calculate Payroll Taxes
Determine your employer UI contribution based on your current CTDOL rate notice, and calculate employee withholding for state income tax and the CTPL contribution.
Step 3: Withhold Employee Amounts
Deduct state income tax and the employee's CTPL contribution from each paycheck.
Step 4: Pay Employer UI Contributions
Remit UI payments to the CTDOL according to your assigned deposit schedule.
Step 5: File Payroll Tax Returns
Submit quarterly UI wage reports to the CTDOL, quarterly CTPL contribution reports to the CT Paid Leave Authority, and periodic withholding returns to the DRS.
Step 6: Maintain Payroll Records
Keep detailed payroll records, wage reports, and payment confirmations in case of future audits or compliance reviews from any of the three agencies.
Following a consistent payroll process helps reduce mistakes and makes year-end reporting significantly easier.
Frequently Asked Questions
Who is required to pay Connecticut payroll taxes?
Most businesses that hire employees in Connecticut are required to register with the CTDOL, the DRS, and the CT Paid Leave Authority, and to withhold and remit state income tax and CTPL contributions. Employers are responsible for paying UI contributions themselves.
What payroll taxes are employers responsible for in Connecticut?
Connecticut employers are generally responsible for unemployment insurance (employer-paid), state personal income tax withholding at graduated rates, and CT Paid Leave contributions which are funded entirely by employees, though employers must withhold and remit them. Connecticut has no separate state disability insurance program and no local income tax.
How often do employers file Connecticut payroll tax returns?
Unemployment insurance and CT Paid Leave contributions are both reported quarterly, to the CTDOL and the CT Paid Leave Authority respectively. State income tax withholding is filed according to a schedule based on the amount withheld.
How do I register for Connecticut payroll taxes?
Employers register with the CTDOL (unemployment insurance) and the DRS (withholding tax) at the state level, and separately with the CT Paid Leave Authority once they have one or more Connecticut employees.
What happens if payroll taxes are filed late?
Late filings or payments with any of Connecticut's three payroll tax systems may result in penalties, interest charges, or other compliance issues. Filing accurately and on time across all three helps avoid unnecessary costs.
Does Connecticut payroll tax apply to remote employees?
If an employee performs work that is subject to Connecticut payroll tax rules, employers may have Connecticut payroll tax obligations even if the company is based elsewhere. Since many employees work remotely across state lines, it's worth reviewing where services are actually performed to determine which state's rules including CTPL coverage requirements apply.
Are Connecticut payroll tax rates the same every year?
Not always. Connecticut's UI wage base and new-employer rate both changed for 2026 as part of the state's ongoing UI reform effort, and the CT Paid Leave Board reviews the CTPL contribution rate regularly, even though it stayed at 0.5% for 2026. Employers should review current CTDOL, DRS, and CT Paid Leave Authority guidance each year before processing payroll.
Can payroll software calculate Connecticut payroll taxes automatically?
Many payroll platforms automatically calculate Connecticut UI contributions, graduated state income tax withholding, and CTPL contributions, and help employers meet filing deadlines across all three systems. While automation can significantly reduce manual work, employers are still responsible for ensuring payroll information is accurate and up to date.
Disclaimer
This article is for general informational purposes only and doesn't constitute legal, tax, or accounting advice. Payroll tax rates and rules change frequently consult a qualified CPA or tax professional for guidance specific to your business.
