Free, plain-language state tax form guides. Always check the state’s official page for the current form.

New York Tax Forms State Tax Form Guides

Find detailed guides to New York tax forms, including resident and nonresident income tax returns, withholding and estimated tax, sales and use tax, property tax credits, extensions, amended returns, and business filings. New York taxes are administered by the Department of Taxation and Finance, and the state return also handles New York City, Yonkers and MCTMT taxes. Learn what each New York form is used for, who needs to file it, and how to complete and submit it correctly.

New York Form NYS-45 — Quarterly Combined Withholding, Wage Reporting, and Unemployment Insurance Return

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New York Form NYS-45 — Quarterly Combined Withholding, Wage Reporting, and Unemployment Insurance Return

How to file New York Form NYS-45, the Quarterly Combined Withholding, Wage Reporting, and Unemployment Insurance Return — who must file, quarterly due dates, Parts A, B and C, the 2026 unemployment insurance wage base, e-file requirements, amendments and late filing consequences. Verified against the 1/26 form and instructions from the Department of Taxation and Finance and the Department of Labor.

New York Form ST-100 — New York State and Local Quarterly Sales and Use Tax Return

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New York Form ST-100 — New York State and Local Quarterly Sales and Use Tax Return

How to file New York Form ST-100, the New York State and Local Quarterly Sales and Use Tax Return — who must file, the quarterly periods and due dates, Sales Tax Web File, how to complete each step, the vendor collection credit, penalties and where to mail a paper return. Verified against the Department of Taxation and Finance’s June–August 2026 form and instructions.

New York Form IT-214 — Claim for Real Property Tax Credit for Homeowners and Renters

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New York Form IT-214 — Claim for Real Property Tax Credit for Homeowners and Renters

How to claim New York’s real property tax credit on Form IT-214 for 2025 — who qualifies, the $18,000 federal adjusted gross income limit, the $85,000 property value and $450 monthly rent limits, how the credit is computed for homeowners and renters, and where and when to file. Verified against the Department of Taxation and Finance’s 2025 form and instructions.

New York Form IT-370 — Application for Automatic Six-Month Extension of Time to File for Individuals

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New York Form IT-370 — Application for Automatic Six-Month Extension of Time to File for Individuals

How to use New York Form IT-370 to get an automatic six-month extension of time to file Form IT-201 or IT-203 — the payment you still owe by the original due date, the worksheet, special condition codes for filers abroad, late payment and late filing penalties, and where to mail it. Verified against the Department of Taxation and Finance’s 2025 form and instructions.

New York Form IT-201-X — Amended Resident Income Tax Return 2025-2026

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New York Form IT-201-X — Amended Resident Income Tax Return [thisnextyear]

How to file New York Form IT-201-X, the Amended Resident Income Tax Return, for 2025 — when you must amend, the three-year and 90-day rules, what to attach, how to report IRS changes, protective claims and NOL carrybacks, refunds and balances due, and where to mail it. Verified against the Department of Taxation and Finance’s 2025 form and instructions.

New York Form IT-2105 — Estimated Tax Payment Voucher for Individuals

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New York Form IT-2105 — Estimated Tax Payment Voucher for Individuals

How to use New York Form IT-2105, the Estimated Tax Payment Voucher for Individuals, for 2026 — who must pay estimated tax, the $300 threshold, quarterly due dates, the safe harbor rules that avoid penalties, MCTMT for the self-employed, and where to send payments. Verified against the Department of Taxation and Finance’s 2026 voucher and instructions.

New York Form IT-2104 — Employee’s Withholding Allowance Certificate

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New York Form IT-2104 — Employee's Withholding Allowance Certificate

How to fill out New York Form IT-2104, the Employee’s Withholding Allowance Certificate, for 2026 — who should file it, how the worksheet counts allowances, extra withholding for New York City and Yonkers, multiple jobs, and when to update it. Verified against the Department of Taxation and Finance’s 2026 form and instructions.