V VestedGrant
Tax year 2027 · NH

New Hampshire ISO AMT in 2027

The 2027 federal AMT exemption, phase-out thresholds, and New Hampshire (no state AMT) for ISO exercises.

The 2027 picture for New Hampshire residents

New Hampshire has no state income tax, so the 2027 tax picture for its residents was entirely federal: ordinary rates up to 37%, capital gains up to 23.8%, and federal Medicare taxes. That was the structural advantage that drove tech-employee relocations into New Hampshire throughout the decade.

2027 AMT exemption

The 2027 federal AMT exemption was $88,100 for single filers. The exemption phased out at 25 cents per dollar of AMTI above $626,350, fully eliminating the exemption for higher earners. That is why ISO exercises in New Hampshire during 2027 produced AMT bills that surprised people running first-order mental math.

New Hampshire layer in 2027

New Hampshire did not impose a separate state AMT in 2027, so federal AMT was the only layer. State ordinary tax still applied to any disqualifying disposition income recognized in the same year.

Frequently asked

What supplemental-wage withholding rate applied to RSU income in New Hampshire in 2027?
The federal supplemental-wage withholding rate was 22% on the first $1,000,000 of supplemental wages per calendar year, rising to 37% above that. New Hampshire does not impose a state income tax on wages, so no state withholding applied.
Did New Hampshire recognize federal QSBS exclusion in 2027?
New Hampshire has no state income tax, so QSBS eligibility affects only federal tax. Federal Section 1202 treatment applied in 2027 identically for New Hampshire residents.
What was the top federal ordinary bracket in 2027, and how did it apply to New Hampshire residents?
The 37% federal ordinary bracket started around $626,350 of taxable income for single filers in 2027. New Hampshire added nothing at the state level, producing a combined top marginal rate of approximately 37%.

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