Vermont State Income Tax Filing: Forms, Deadlines, and Rules Explained

1. What Is Vermont State Income Tax Filing?

Vermont state income tax filing is the annual process of reporting income subject to Vermont tax to the Vermont Department of Taxes and determining the state tax owed or refund due.

Vermont state income tax is separate from federal income tax and must be filed even if you have already submitted your federal return to the Internal Revenue Service.

2. Who Must File Vermont State Income Tax?

You may need to file a Vermont state income tax return if you are a Vermont resident, part-year resident, or nonresident with Vermont-source income, or if Vermont's filing requirements otherwise apply to you.

Quick checklist (common scenarios)

1. Vermont residents: required to file if income exceeds Vermont filing thresholds
2. Part-year residents: report Vermont income and allocate income between Vermont and non-Vermont periods using the applicable Vermont schedules.

3. Nonresidents: may need to file when they have Vermont-source income and meet Vermont's filing requirements.
4. Self-employed individuals: must report Vermont business or freelance income
5. LLC members and sole proprietors: report applicable business income through the Vermont and federal filings required by their tax classification.

3. Your Filing Status and Income Type Decide Vermont Tax Forms

Vermont generally uses Form IN-111 as the individual income tax return, with additional schedules such as Schedule IN-113, IN-112, and IN-117 used when required based on residency, income, deductions, and credits.

Key idea

1. Vermont resident: files Form IN-111
2. Part-year resident: files Form IN-111 (with allocation)
3. Nonresident: files Form IN-113 for Vermont-source income

Confirming your residency status and income source early helps ensure accurate Vermont state income tax filing and reduces the risk of notices from the Vermont Department of Taxes.

4. Documents Required for Vermont State Income Tax Filing

Preparing accurate documents in advance helps ensure smooth Vermont state income tax filing and reduces the risk of delays, notices, or penalties from the Vermont Department of Taxes.

1. W-2 and 1099 forms: reporting wages, contractor income, or other earnings
2. Federal tax return: Complete your federal return and keep Form 1040 and supporting schedules available when preparing your Vermont return. Vermont uses federal income information as part of its state tax calculation.
3. Vermont withholding records: state tax withheld from income, if applicable
4. Business income records: profit and expense details for self-employed taxpayers
5. Prior year Vermont return: helpful for consistency and carryforward items

5. DIY vs Accountant vs Managed Filing

Taxpayers and business owners usually choose one of three approaches: do it themselves, hire an accountant, or use a managed process. The right choice depends on complexity, time, and risk tolerance.

What typically changes your complexity?

1. Multiple LLCs or multiple partners
2. Multiple income sources, withholding, or complex tax situations
3. High bank activity and many transactions

Why founders choose managed filing

1. Fewer missed items and fewer back-and-forth messages
2. Clear checklist + timeline
3. More confidence that forms match the entity type

6. Step-by-Step: How to File Vermont State Income Tax

Step 1: Confirm your Vermont residency status

Determine whether you are a Vermont resident, part-year resident, or nonresident. Most individual filers use Form IN-111, while Schedule IN-113 is used for applicable nonresident and part-year resident income allocation.

Step 2: Gather income records and federal return details

Collect W-2s, 1099s, and your federal income tax return. Vermont state income tax filing uses federal income figures as the starting point for calculating state tax.

Step 3: Review Vermont-specific deductions and withholding

Verify Vermont tax withheld and applicable deductions, including any allowable Vermont adjustments and deductions, which may include a limited deduction for federal income tax paid, subject to income-based restrictions. Accurate withholding information helps prevent balances due or delayed refunds.

The Vermont individual income tax filing deadline for 2025 returns is April 15, 2026. Vermont generally provides additional time to file through the applicable extension process, but tax due remains subject to the original payment deadline.

Step 4: Prepare and review the Vermont tax return

Complete the appropriate Vermont tax form using the MyVTax portal, approved tax software, or professional assistance. Review entries carefully before submission.

Step 5: Submit the return and retain confirmation

File your return electronically or by mail and keep a copy of the filed return, payment confirmation, or refund notice for your records.

Step 6: Plan for next tax year

Maintain organized income and expense records throughout the year to simplify future Vermont state income tax filing and reduce the risk of errors.

Helpful IRS reference:

• IRS Small Business and Self-Employed resources
• Employer Identification Number information

If you prefer guided assistance, FormLLC can help confirm your Vermont filing requirements and coordinate the preparation process.

7. Tips to Avoid Vermont Tax Notices and Penalties

• File your Vermont state income tax return by the April 15 deadline for calendar-year taxpayers, unless an applicable extension or adjusted deadline applies.
• Pay any tax due even if you request an extension to file
• Verify Vermont tax withholding amounts before submission
• Keep copies of filed returns and payment confirmations
• Respond promptly to any notices from the Vermont Department of Taxes

8. Vermont Tax Costs, Penalties, and Filing Timelines

• Filing preparation cost: Varies based on income type and filing method used
• Record cleanup: Optional but helpful if income or withholding records are incomplete
• Late filing penalties: Vermont may impose penalties and interest when a required return is filed late or tax is not paid when due. The applicable penalty depends on the circumstances and current Vermont rules.
• Late payment penalty:1% per month of unpaid tax, up to 25%
• Interest on unpaid tax: Accrues at rates set annually by the Vermont Department of Taxes
• Filing extension: Vermont generally provides an extension of time to file. A Vermont extension may be filed using Form IN-151 when required; taxpayers who qualify for a federal extension generally may not need to file a separate Vermont extension unless Vermont requires a payment with the extension. Tax owed remains subject to the applicable original payment deadline.

9. Common Federal and Vermont Tax Forms

1. EIN (Employer Identification Number)

An EIN identifies a business for federal tax purposes and may be used for applicable Vermont business tax filings. Whether an EIN is required depends on the business's entity type, ownership, employees, and federal tax classification.

2. Federal Partnership Return (Form 1065)

Multi-member LLCs file a federal informational return using Form 1065 . Income reported on Schedule K-1 is used to complete Vermont state income tax returns for individual partners.

3. Federal Corporate Return (Form 1120)

US C-Corporations file Form 1120 at the federal level. Corporate income figures are used to determine Vermont tax obligations when applicable.

4. Vermont Individual Income Tax Forms

• Form IN-111: Vermont Individual Income Tax Return.
• Schedule IN-113: Vermont income adjustment/allocation schedule used for nonresidents and some part-year residents.
• Schedule IN-112: Vermont adjustments and credits schedule, used when applicable.
• Form IN-151: Application for Extension of Time to File Form IN-111 when a Vermont extension filing is required. (tax.vermont.gov)

5. Owner Individual Filing (when applicable)

• Individuals report Vermont income using Form IN-111 (residents/part-year residents) or Form IN-113 (nonresidents) based on residency
• Partners use Schedule K-1 information to complete Vermont individual returns
• Federal ITIN or SSN may be required for individual Vermont tax filing

10. Conclusion

Vermont state income tax filing requires taxpayers who meet Vermont's filing requirements to report applicable income using Form IN-111 and any required schedules, including Schedule IN-113 for applicable nonresident and part-year resident calculations.

By understanding Vermont tax forms, filing deadlines, extensions, deductions, and credits, taxpayers can prepare their state returns more accurately and stay compliant with the Vermont Department of Taxes. FormLLC provides clear guidance to help streamline the Vermont state income tax filing process.