Department of Taxation and Finance
Benefit from good recordkeeping
The deadline to file your personal income tax return has passed. Remember to keep a copy of your return and any documentation that supports the credits and deductions you claimed for at least 3 years. If we have questions about your return, we may request your documentation.
And it's never too early to keep track of documentation for next year. We can help you determine what documentation to hang onto throughout the year in preparation for filing your 2026 return.
Popular Services
Featured Resources
Choose an online service
We offer a number of online services to fit your busy lifestyle. Check your payment balance, file a return, make a payment, or respond to a department notice—anywhere, anytime.
Learn about STAR benefits for homeowners
If you've recently bought a home, or never applied for the STAR benefit on your current home, you should investigate the STAR options available to you. You may save hundreds each year!
Use Sales Tax Web File
Log in to your Business Online Services account to Web File your sales tax returns. With Web File, you can schedule payments in advance, save your bank account information for future use, and update your business information.
Respond to a department notice
If you receive a bill or notice, respond online. It's the easiest, fastest way. We'll walk you through the process.
Note: If your refund status says we sent you a letter requesting additional information, see Respond to a letter for more information and to review our checklists of acceptable proof.
Benefit from good recordkeeping
Whether you’ve already filed or are keeping track of documentation for next year, our recordkeeping pages are a great resource.
Good records help you determine which credits and deductions you qualify for, and serve as documentation if we need to verify information on your return.
View our due dates calendar
Looking for your due date? View our calendar of filing due dates for corporation tax, personal income tax, and sales tax.
What's New
Changes to Article 9-A MFI and estimated tax requirements
For tax years beginning on or after January 1, 2026, mandatory first installment (MFI) and estimated tax requirements have changed for some corporations.
Great news—it's getting easier to qualify for STAR!
We’re taking steps to simplify the STAR program! Now, you no longer need to apply for the Enhanced STAR exemption with your assessor when you turn 65. We'll automatically upgrade you to Enhanced STAR when you become eligible.
We've also simplified other eligibility requirements.
The first estimated income tax due date for tax year 2026 is April 15
You can pay your estimated income tax online using your Individual Online Services account or tax preparation software. Both are convenient, secure, and easy.
Featured in April
Did you receive mail from us?
We've created a resource center to make it easier for you to identify and respond to Tax Department mail.
Learn what we're mailing this month, what kinds of letters we send, how to respond, and more!
Missed a due date?
If you haven't filed and paid your tax, use our penalty and interest calculator to calculate your late filing and late payment penalties and interest.
Note: Only use this calculator if you're sending your late return and late payment together.
Do you make estimated tax payments?
Our estimated tax resource center simplifies estimated tax, with information about who must pay and tools to assist you.
If you're self employed, check out our Self-employment resource center too!