Iowa Tax Form IA-4562A is used to compute the Iowa depreciation adjustment:
- If the taxpayer claims the Federal 30% "bonus depreciation" deduction for assets acquired after September 10, 2001, but before May 6, 2003; and/or
- If the taxpayer claims the Federal 50% "bonus depreciation" for assets acquired this for Iowa tax purposes; and/or
- If the taxpayer claims the Federal Section 179 expense in excess of $25,000 for tax years beginning on or after January 1, 2003, but beginning before January 1, 2006, and taxpayer chooses to only claim no more than $25,000 for Iowa tax purposes; and/or
- If the taxpayer disposes of "bonus depreciation" or Section 179 property during the tax year, and Iowa depreciation adjustments were made to the property in previous tax years


