# Missouri — State conformity to federal Section 179 and bonus depreciation rules

For Missouri, section 179 conformity is conforms; state section 179 cap is federal limit applies; state section 179 phase-out is federal phase-out applies; bonus depreciation conformity is conforms; add-back rule is N/A, recorded from its source on 2026-08-15.

- **State:** Missouri _(verified: appears in the quote below)_
- **Section 179 conformity:** conforms _(verified: appears in the quote below)_
- **State Section 179 cap:** federal limit applies
- **State Section 179 phase-out:** federal phase-out applies
- **Bonus depreciation conformity:** conforms _(verified: appears in the quote below)_
- **Add-back rule:** N/A
- **IRC conformity date:** rolling conformity
- **Has income tax:** yes _(verified: appears in the quote below)_

## What the source says

> State Follows Bonus Depreciation-TCJA of 2017 : Yes Missouri conforms 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. Missouri adopts the Internal Revenue Code of 1986 as amended and in effect for the taxable year. State Follows IRC § 179-TCJA of 2017 : Yes Missouri conforms to the Tax Cuts and Jobs Act provision that increases the maximum amount a taxpayer may expense under IRC § 179 to $1 million, increases the phase-out threshold amount to $2.5 million, and provides for indexing for inflation. Missouri adopts the IRC as amended for the taxable year

## What crosslinktax.com says

> Missouri | Yes | Yes |

Source: https://www.crosslinktax.com/customer-resources/tax-resource-center/tax-updates/state-compliance-with-federal-bonus-depreciation-and-section-179-expensing-2025/

## Source

- https://accountants.intuit.com/support/en-us/help-article/asset-depreciation/state-conformity-special-depreciation-allowance/L27kRyetJ_US_en_US
- https://www.crosslinktax.com/customer-resources/tax-resource-center/tax-updates/state-compliance-with-federal-bonus-depreciation-and-section-179-expensing-2025/

Last verified: 2026-08-15. Review by: 2027-08-15.
Part of [State conformity to federal Section 179 and bonus depreciation rules](https://referencesource.org/state-section-179-bonus-depreciation-conformity/).