Iowa

For Iowa, section 179 conformity is conforms; state section 179 cap is federal limit applies (fully conforms beginning tax year 2020); state section 179 phase-out is federal phase-out applies; bonus depreciation conformity is decouples — requires add-back; add-back rule is Iowa does not conform to bonus depreciation; adjustment required, recorded from its source on 2026-08-15; source re-checked 2026-10-01.

Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.

What the source says

State Follows Bonus Depreciation-TCJA of 2017 : No Iowa does not conform to the Tax Cuts and Jobs Act provision that provides a 100% first-year deduction for the adjusted basis is allowed for qualified property acquired and placed in service after September 27, 2017, and before January 1, 2023. State Follows IRC § 179-TCJA of 2017: Yes The increased expensing allowance under IRC § 179 , as amended by the Tax Cut and Jobs Act applies in computing net income for Iowa state tax purposes for tax years beginning on or after January 1, 2018, subject to the limitations for tax years prior to January 1, 2020. The Iowa Section 179 deduction limitation for tax year 2019 is $100,000 (less than the $1,020,000 federal limit) with a $400,000 phaseout for all taxpayers. Iowa will fully conform to the IRC § 179 deduction amounts beginning in tax year 2020.

— accountants.intuit.com, retrieved 2026-08-15

Source

• accountants.intuit.comhttps://accountants.intuit.com/support/en-us/help-article/asset-depreciation/state-conformity-special-depreciation-allowance/L27kRyetJ_US_en_US

Last verified against source: 2026-10-01. Due for re-check by 2027-08-15. This page as Markdown · OKF bundle · full dataset as JSON.