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Connecticut Department of Revenue Services (DRS) Edition CT-W4 (Rev. 12/25), effective January 1, 2026 2 pages Connecticut

Connecticut Form CT-W4 — Employee's Withholding Certificate

The Connecticut Department of Revenue Services form that tells your employer how much Connecticut income tax to withhold from your pay.

Fill Out Form CT-W4 Online View the Form Free on every VergeHR plan
Form CT-W4 · Employee's Withholding Certificate (Connecticut)
The official Connecticut Department of Revenue Services (DRS) form, edition CT-W4 (Rev. 12/25), effective January 1, 2026 — blank
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Form CT-W4 (2025) Employee's Withholding Certificate (Connecticut) — page 1 of 2
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Form CT-W4 (2025) Employee's Withholding Certificate (Connecticut) — page 2 of 2
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Fill This Form Online Blank PDF from Connecticut Department of Revenue Services (DRS)

What is Form CT-W4?

Form CT-W4, the Employee's Withholding Certificate, is how you tell your employer how much Connecticut income tax to take out of each paycheck. Instead of counting allowances, you choose a single Withholding Code letter (A, B, C, D, E or F) from a table on the form, based on the filing status you expect to use on your Connecticut return and a statement about your expected gross income.

The current form is Rev. 12/25, effective January 1, 2026, issued by the Connecticut Department of Revenue Services (DRS). If you don't give your employer a CT-W4, the instructions say it must withhold at the highest marginal rate of 6.99% with no allowance for exemption, so filling it in usually matters.

VergeHR asks for your filing status and which statement fits you, works out the code letter from the form's own table, and prints your answers into the DRS PDF, ready to sign. The finished form is saved in the person's folder in Files and can be sent for e-signature. VergeHR never files it: you give the CT-W4 to your employer.

Who fills it
The employee (top part); the employer completes the Employers section.
Given to
Your employer, who keeps it on file.
Edition
Rev. 12/25, effective January 1, 2026.
Withholding Codes
A, B, C, D, E or F, chosen from the table by filing status and expected gross income.
If you don't file one
Your employer withholds at 6.99% with no exemption.
Cost
Free to fill out on any VergeHR account.

Who needs to fill out Form CT-W4?

  • New employees whose employer withholds Connecticut income tax.
  • Current employees whose situation has changed, for example a bonus or a new filing status.
  • Married couples who both work, who may need to adjust with line 2 or 3.
  • Military spouses claiming the Military Spouses Residency Relief Act (MSRRA) exemption.
  • Nonresidents working in Connecticut, together with Form CT-W4NA if they also work outside the state for the same employer.

When to Use Form CT-W4

  • When you start a new job.
  • At least once a year, as the instructions recommend.
  • Within ten days of a change in your circumstances, such as a bonus or a change of filing status.
  • When last year's withholding left you owing tax or with a large refund.

What You Need Before You Start

  • Your name, Social Security number and home address.
  • The filing status you expect to use on your Connecticut income tax return.
  • A good estimate of your annual gross income (and your spouse's, if you file jointly).
  • Any additional or reduced amount per pay period worked out from DRS Informational Publication 2026(7), if you are adjusting.
  • For the MSRRA exemption: your state of legal residence, plus copies of your spouse's Leave and Earnings Statement and your military dependent ID card for your employer.

What’s On Form CT-W4

The 2025 edition has 2 pages. VergeHR asks for it in 4 parts, and it is signed by Employee:

  1. Line 1: Your Withholding CodeEmployee
  2. Lines 2 and 3: Adjust the amount per pay periodEmployee
  3. Your name, SSN and home addressEmployee
  4. Employer sectionEmployer

How to fill out Form CT-W4, step by step

1 Pick your filing status

The form has five blocks: Married Filing Jointly, Qualifying Surviving Spouse, Married Filing Separately, Single and Head of Household. Choose the status you expect to report on your Connecticut return. It is generally the same as on your federal return, though special rules apply to married couples with a different residency status.

2 Choose the statement that fits and get your code

Within your block, pick the statement about your expected gross income. For example, a single filer expecting more than $15,000 uses code F, and a head of household expecting more than $19,000 uses code B. If you expect $15,000 or less (single), $19,000 or less (head of household), $12,000 or less (married filing separately) or $24,000 or less combined (married filing jointly), code E means no withholding is necessary. Code D gives the highest level of withholding: it is for significant nonwage income, nonresidents with substantial other income, and married couples filing jointly who both work and expect more than $100,500 combined. VergeHR enters the letter on line 1 for you.

3 Lines 2 and 3: adjust per pay period

Line 2 adds an amount to each paycheck's withholding; line 3 reduces it. The instructions point married couples who both choose code A, and anyone with more than one job or substantial nonwage income, to the Supplemental Tables in Informational Publication 2026(7), Is My Connecticut Withholding Correct?

4 The MSRRA box

If you are a military spouse claiming the MSRRA exemption, tick the box and enter your state of legal residence. The code is E. You must give your employer a copy of your spouse's Leave and Earnings Statement and your military dependent ID card.

5 Your details and signature

Enter your name, SSN and home address, then sign and date the declaration. You can sign by hand or with VergeHR eSignature.

6 Employer section

The employer ticks whether you are a new or rehired employee (with the date hired) and adds its business name, FEIN, address, contact person and telephone number.

Common Mistakes to Avoid

  • Choosing code E when you actually expect income over the threshold for your filing status.
  • Both spouses choosing code A without checking the Supplemental Tables, which can leave too little or too much withheld.
  • Not giving your employer a new CT-W4 within ten days of a change, as the form requires.
  • Claiming the MSRRA exemption without giving your employer the spouse's LES and your military dependent ID card.
  • Leaving the form out entirely, which means withholding at 6.99% with no exemption.

After You Fill It Out

Sign it and give it to your employer, and keep a copy for your records. VergeHR saves the PDF in the person's folder in Files.

Your employer keeps it on file. For certain employees claiming code E, the employer must send copies to DRS.

Employers report new and rehired employees to the Connecticut Department of Labor within 20 days of the hire date.

Fill Out Form CT-W4 Online with VergeHR

  1. Pick the employee. Choose an employee and VergeHR fills in their name, date of birth, email and other details it already knows.
  2. Answer plain-language questions. One part of the form at a time, with the official help text beside each question — 30 fields in all. Your answers save as you go.
  3. Check the live preview. Watch your answers land on the real Connecticut Department of Revenue Services (DRS) form, and let VergeHR do any worksheet arithmetic.
  4. Generate the official PDF. VergeHR prints your answers into the agency’s own PDF and files it with that employee’s documents. Sign it, or send it for e-signature.

VergeHR fills the form — it never files or submits anything for you. Deliver the finished form to whoever asked for it, the way the form’s instructions say.

Start Form CT-W4 Now — It’s Free

Form CT-W4: frequently asked questions

Which Withholding Code should I use?

It depends on your filing status and expected gross income. The table on the form maps each combination to a letter from A to F. VergeHR asks the two questions and fills in the letter.

What happens if I don't hand in a CT-W4?

The employer instructions say your employer must withhold at the highest marginal rate of 6.99% without allowance for exemption.

How often should I update my CT-W4?

At least once a year, and within ten days if your circumstances change, for example if you receive a bonus or your filing status changes.

Can I have no Connecticut tax withheld?

Code E means no withholding is necessary. It is for people under the income threshold for their filing status, nonresidents with no Connecticut tax liability, and MSRRA-qualified military spouses.

I work partly outside Connecticut. What else do I need?

If you work partly in and partly outside Connecticut for the same employer, the instructions say to also complete Form CT-W4NA, which helps your employer apportion withholding.

Is the CT-W4 the same as the federal W-4?

No. The W-4 covers federal withholding; the CT-W4 covers Connecticut income tax and uses a code letter rather than dollar amounts for dependents and deductions.

Official Sources

VergeHR is not affiliated with or endorsed by Connecticut Department of Revenue Services (DRS) or any government. This page explains the form in general terms and is not legal, tax or immigration advice. Always read the official instructions, and check that you are using the edition the recipient accepts. Page last reviewed 2026-09-28.

Fill Out Form CT-W4 Online