Iowa W-4 2024 Form. If they don’t fill out a new form, do their deductions stay the same or do employers need to change their withholding, using the $40 total allowance? Next year, the top rate will move down to 4.82% (reducing tax for those making $6,000 or more), and then finally in 2026, everyone will.
An update to instructions included with iowa’s 2024 withholding formula clarifies that employers can convert the number of allowances used on the state’s withholding certificate to the new system of an allowance. In 2024, the iowa department of revenue adjusted the withholding tables and calculation to align with the recent income tax changes.
