Here’s what HIVE AI had to say about “What changes affect the Alternative Minimum Tax this season?”:
Alternative Minimum Tax this season
For the current filing season, you are generally filing a 2025 federal return in 2026. The main point is that there is no major One, Big, Beautiful Bill AMT change affecting 2025 returns. The bill’s AMT provision applies to taxable years beginning after December 31, 2025, so its AMT changes start with tax year 2026 returns filed in 2027, not with 2025 returns being filed now.
For 2025 returns, the AMT changes are the usual inflation adjustments:
- exemption amount is $88,100 for single and head of household
- exemption amount is $137,000 for married filing jointly or qualifying surviving spouse
- exemption amount is $68,500 for married filing separately
- the exemption begins phasing out at $626,350 for single and head of household and $1,252,700 for married filing jointly or qualifying surviving spouse
- the 26% AMT rate applies to the first $239,100 of taxable excess, or $119,550 for married filing separately, and 28% applies above that
Corporations still do not pay AMT; corporate AMT was repealed for tax years beginning after 2017.
What changes next year instead
Starting with tax year 2026, the OBBB keeps the higher AMT exemption structure in place and changes the phaseout rules. For 2026, the AMT exemption is $90,100 for unmarried individuals, $140,200 for joint returns, $70,100 for married filing separately, and $31,400 for estates and trusts. The phaseout thresholds are $500,000 for unmarried individuals and $1,000,000 for joint returns.
So, for this season, the AMT story is mostly inflation-adjusted 2025 numbers, not a new OBBB AMT rule. The OBBB AMT changes are mostly a 2026-tax-year issue.
If you want, I can also compare the 2025 AMT amounts side-by-side with 2024.
Sources
1 – One Big Beautiful Bill Act Sec. 70107. Extension of increased alternative minimum tax exemption amounts and modification of phaseout thresholds
2 – Notice 2018-38
3 – IRS – Instruction 8697 Instructions for Form 8697, Interest Computation Under the Look-Back Method for Completed Long-Term Contracts
4 – IRS releases tax inflation adjustments for tax year 2026, including amendments from the One, Big, Beautiful Bill
5 – Instructions for Form 6251 (2025)
6 – 21.6.4 Tax Computation / Accounting Period Changes
7 – Internal Revenue Bulletin: 2025-45
8 – One, Big, Beautiful Bill provisions – Individuals and workers
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