Tax Brackets, Rates and Standard Deductions in Connecticut

Connecticut related income tax information, resources, forms and links. You can prepare and e-File your current tax year Connecticut Income Taxes here on eFile.com together with your Federal Income Tax Return. Information on how to only file a Connecticut Income Return. Per IRS/State regulation, you can only eFile a Connecticut return in conjunction with the IRS return as the IRS and Connecticut share data. You can only prepare a Connecticut return on eFile.com, however the return will have to be downloaded and mailed in.

Find Connecticut income tax forms, tax brackets and rates by tax year.

If you still need to file a return for a previous tax year, find the Connecticut tax forms below. You can complete and sign the forms here on eFile.com before you mail them to the CT Tax Agency. For Federal or IRS back taxes access the tax forms here.

Below find links to other important Connecticut income tax return information and other related features (e.g. tax extension, amendment, etc.)

Connecticut Income Tax Returns

Connecticut Income Taxes

Connecticut Tax Deadlines, Extension, Penalties

Instructions, Resources on how to prepare and e-File Connecticut Tax Returns or how to prepare an Extension and/or previous Year Tax Returns

Prepare, eFile a CT + IRS Tax Return: Detailed eFile.com Service Overview

Start Federal and Connecticut Tax Returns

Prepare only a CT State Return without an IRS return. Details

Step by Step instructions on how to only Prepare and Download - not eFile - State Returns on eFile.com.

File a current Connecticut Tax Amendment

Complete overview on how to prepare and amend a Connecticut Income Tax Return.

Connecticut Income Tax Forms

Current CT tax year tax forms you can eFile.
Previous tax year or Connecticut Income Back Taxes Forms you can complete but not e-File any longer.

Connecticut Tax Brackets, Rates explained

Current and past tax year CT Tax Brackets, Rates and Income Ranges

IRS Tax Brackets, Rates by Tax Year

Calculate and Estimate your IRS Income Tax Brackets and Rates with the eFile RATEucator.

Income Tax Brackets, Rates, Income Ranges, and Estimated Taxes Due

Here you can find how your Connecticut based income is taxed at different rates within the given tax brackets. When you prepare your return on eFile.com this is all calculated for you based on your income.

Connecticut Tax Brackets for Tax Year 2023

As shown below Connecticut Tax Rates did not increase for the current year.

Tax Rate

Filing Status

Income Range

Taxes Due

3.00%

Single or MFS

$0 - $10,000

3.00% of Income

HOH

$0 - $16,000

3.00% of Income

MFJ

$0 - $20,000

3.00% of Income

5.00%

Single or MFS

$10,000 - $50,000

$300 + 5.00%

HOH

$16,000 - $80,000

$480 + 5.00%

MFJ

$20,000 - $100,000

$600 + 5.00%

5.5%

Single or MFS

$50,000 - $100,000

$2,300 + 5.5%

HOH

$80,000 - $160,000

$3,680 + 5.5%

MFJ

$100,000 - $200,000

$4,600 + 5.5%

6.0%

Single or MFS

$100,000 - $200,000

$5,050 + 6.0%

HOH

$160,000 - $320,000

$8,080 + 6.0%

MFJ

$200,000 - $400,000

$10,100 + 6.0%

6.5%

Single or MFS

$200,000 - $250,000

$11,050 + 6.5%

HOH

$320,000 - $400,000

$17,680 + 6.5%

MFJ

$400,000 - $500,000

$22,100 + 6.5%

6.9%

Single or MFS

$250,000 - $500,000

$14,300 + 6.9%

HOH

$400,000 - $800,000

$22,880 + 6.9%

MFJ

$500,000 - $1,000,000

$28,600 + 6.9%

6.99%

Single or MFS

$500,000 - or more

$31,550 + 6.99% over $500,000

HOH

$800,000 - or more

$50,480 + 6.99% over $800,000

MFJ

$1,000,000 - or more

$63,100 + 6.99% over $1,000,000

Connecticut Tax Brackets for Tax Year 2022

Previous tax rates for CT.

Tax Rate

Filing Status

Income Range

Taxes Due

3.00%

Single or MFS

$0 - $10,000

3.00% of Income

HOH

$0 - $16,000

3.00% of Income

MFJ

$0 - $20,000

3.00% of Income

5.00%

Single or MFS

$10,000 - $50,000

$300 + 5.00%

HOH

$16,000 - $80,000

$480 + 5.00%

MFJ

$20,000 - $100,000

$600 + 5.00%

5.5%

Single or MFS

$50,000 - $100,000

$2,300 + 5.5%

HOH

$80,000 - $160,000

$3,680 + 5.5%

MFJ

$100,000 - $200,000

$4,600 + 5.5%

6.0%

Single or MFS

$100,000 - $200,000

$5,050 + 6.0%

HOH

$160,000 - $320,000

$8,080 + 6.0%

MFJ

$200,000 - $400,000

$10,100 + 6.0%

6.5%

Single or MFS

$200,000 - $250,000

$11,050 + 6.5%

HOH

$320,000 - $400,000

$17,680 + 6.5%

MFJ

$400,000 - $500,000

$22,100 + 6.5%

6.9%

Single or MFS

$250,000 - $500,000

$14,300 + 6.9%

HOH

$400,000 - $800,000

$22,880 + 6.9%

MFJ

$500,000 - $1,000,000

$28,600 + 6.9%

6.99%

Single or MFS

$500,000 - or more

$31,550 + 6.99% over $500,000

HOH

$800,000 - or more

$50,480 + 6.99% over $800,000

MFJ

$1,000,000 - or more

$63,100 + 6.99% over $1,000,000

Connecticut Tax Brackets for Tax Year 2021

Previous Year Connecticut Tax Brackets.

Tax Rate

Filing Status

Income Range

Taxes Due

3.00%

Single or MFS

$0 - $10,000

3.00% of Income

HOH

$0 - $16,000

3.00% of Income

MFJ

$0 - $20,000

3.00% of Income

5.00%

Single or MFS

$10,000 - $50,000

$300 + 5.00%

HOH

$16,000 - $80,000

$480 + 5.00%

MFJ

$20,000 - $100,000

$600 + 5.00%

5.5%

Single or MFS

$50,000 - $100,000

$2,300 + 5.5%

HOH

$80,000 - $160,000

$3,680 + 5.5%

MFJ

$100,000 - $200,000

$4,600 + 5.5%

6.0%

Single or MFS

$100,000 - $200,000

$5,050 + 6.0%

HOH

$160,000 - $320,000

$8,080 + 6.0%

MFJ

$200,000 - $400,000

$10,100 + 6.0%

6.5%

Single or MFS

$200,000 - $250,000

$11,050 + 6.5%

HOH

$320,000 - $400,000

$17,680 + 6.5%

MFJ

$400,000 - $500,000

$22,100 + 6.5%

6.9%

Single or MFS

$250,000 - $500,000

$14,300 + 6.9%

HOH

$400,000 - $800,000

$22,880 + 6.9%

MFJ

$500,000 - $1,000,000

$28,600 + 6.9%

6.99%

Single or MFS

$500,000 - or more

$31,550 + 6.99% over $500,000

HOH

$800,000 - or more

$50,480 + 6.99% over $800,000

MFJ

$1,000,000 - or more

$63,100 + 6.99% over $1,000,000

Income Tax Brackets for Other States: Compare State Tax Brackets, Rates
For your personal Effective IRS Tax Rate use the RATEucator Tool

Connecticut Standard and Itemized Deductions

Connecticut does not have standard and itemized deductions.

Other Standard Deductions by State: Compare State Standard Deduction Amounts
IRS Standard Deduction: Federal Standard Deductions

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