You are required to file an amended Vermont return within 180 days of filing an amended federal return or receiving a "Notice of Change" from the IRS to your federal return. If you do not file the amended Vermont return, you may be subject to additional penalties and interest on any tax due.
If you submit a Property Tax Credit Claim with your Homestead Declaration, you are allowed to amend or change household income only as reported on Schedule HI-144, Household Income, within three years of the April filing deadline. You may make the following amendments to Form HS-122, Homestead Declaration and Property Tax Credit Claim within three years of the April filing deadline:
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housesite value,
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housesite education tax,
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housesite municipal tax, and
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ownership percentage.
How to File Your Amended Return
Use Vermont Form IN-111, Vermont Income Tax Return to file your amended return. Verify you are using the form for the correct year and that you are including all schedules (IN-112, IN-113, IN-153, etc.) submitted with your original filing even if the information on these schedules has not changed.
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In section 1, check the box that reads Check here if this is an AMENDED return.
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Enter the correct figures as if this were the original filing.
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Include copies of all W-2s and 1099s to verify Vermont tax withheld.