Notice of adjustment of federal or state tax liability

Official textlegislature.idaho.govlast amended 2026

# (1)

Upon final determination of any deficiency or refund of federal taxes, the taxpayer is required to send written notice to the state tax commission within one hundred eighty (180) days of the final determination date.

# (2)

Upon final determination of any deficiency or refund of income tax due to another state or territory to which the credit for taxes paid another state or territory applies, as provided in section 63-3029 , Idaho Code, the taxpayer is required to send written notice to the state tax commission within one hundred eighty (180) days of the final determination date.

# (3)

If the notice required by this section is not sent by the taxpayer to the state tax commission within one hundred eighty (180) days of the final determination date, the taxpayer will be subject to the negligence penalty provided by section 63-3046 , Idaho Code.

# (4)

As used in this section, "final determination date" has the same meaning as that term is defined in section 63-3070 (2)(h), Idaho Code.

# (5)

A taxpayer subject to a federal audit is eligible to make estimated payments to the state tax commission in the same manner as provided in section 63-3070 (6), Idaho Code.

Amendment history

63-3069, added 1959, ch. 299, sec. 69, p. 613; am. 2000, ch. 18, sec. 1, p. 35; am. 2018, ch. 6, sec. 1, p. 11; am. 2026, ch. 81, sec. 3, p. 430.

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