Amended Return To amend a previously-filed return, use the tax forms and instructions for the year you are amending. Get prior year forms and instructions at tax.utah.gov/forms.
Amend your return if you discover an error on your Utah or federal return after it has been fi led, or your federal return is audited or adjusted by the IRS in a way that affects your Utah return. You must amend your Utah return within 90 days of the IRS’s final determination.
To qualify for a refund or credit, you must file an amended return within three years after the original return was due. A return filed before the due date is considered filed on the due date. If an amended return must be filed based on changes made by the IRS, you must file your claim for refund or credit within two years after the Utah amended return had to be filed.