MAGI (modified adjusted gross income)

AGI with certain items added back. Different rules use different MAGI definitions: NIIT, IRMAA, and ACA subsidies each compute their own version.

For ACA purposes, MAGI adds back nontaxable Social Security. For NIIT, it adds back foreign earned income exclusions.

• Roth conversions with IRMAA and ACA
• 2026 tax rates
• Decumulation Studio

• AMT (alternative minimum tax)
• ISO (incentive stock option)
• NSO (non-qualified stock option)
• Wash sale
• Tax-loss harvesting