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The Daily Insight

What do you subtract from AGI?

Author

Sarah Duran

Published Feb 26, 2026

To arrive at your final AGI, you are allowed to subtract certain amounts from your total income. For example, teachers can deduct unreimbursed classroom expenses, self-employed people can deduct insurance premiums, and everyone can deduct charitable donations.

Is AGI minus standard deduction?

You subtract your standard deduction directly from your adjusted gross income. If you do not wish to use the standard deduction, you can claim itemized deductions.

DO 403b contributions reduce AGI?

Contributions made to an employer plan, including 401(k) and 403(b) plans, also reduce your AGI, but are not taken as a deduction on your tax return because they are already accounted for on your W-2.

What does it mean when your AGI is negative?

It can also happen if a business owner has made a loss. If you are not running a business, having a negative AGI does not have any bearing on past or future tax returns. It does mean that there will be no federal income tax payable for the year as a negative AGI guarantees that the taxable income will be negative.

Can a sole proprietor have a negative AGI?

If you are running a business as a sole proprietor, and losses on the business have contributed to your negative AGI, and thus in turn a negative taxable income, you may be able to apply some of these losses to different tax years.

When do itemized deductions start phasing out on an AGI?

Indeed, itemized deductions including medical expenses and charitable contributions, begin phasing out this year once your AGI reaches $132,950 for taxpayers who are single or married filing jointly and $66,475 for married taxpayers filing separately. Here’s how to calculate your AGI. 1.) Determine your gross income Wages, salary, tips:

How does adjusted gross income affect the Alternative Minimum Tax?

This is because the alternative minimum tax is an alternate method of calculating the federal income tax liability, and this alternate method starts with adjusted gross income. Adjustments reduce adjusted gross income so by extension they can lower the alternative minimum tax.