It depends on the IRA type. Traditional IRA withdrawals are fully taxable as ordinary income and count toward your AGI, MAGI, IRMAA tier, ACA subsidy phase-out, and Social Security taxation thresholds. Roth IRA qualified distributions do NOT count as income for any of those purposes — they're $0 on your tax return. Roth IRA non-qualified distributions are partly income (the earnings portion) and partly not (basis return). The distinction matters far beyond just the federal tax bill.
Quick Facts
- warningTraditional IRA: fully taxable as ordinary income. Counts toward AGI, MAGI, IRMAA, SS taxation.
- check_circleRoth IRA qualified distribution: $0 income. Does NOT count toward AGI/MAGI/IRMAA/SS.
- infoRoth IRA non-qualified distribution: partial. Basis recovery (contributions out) is $0 income; earnings portion is ordinary income + 10% penalty unless an exception applies.
- warningIndirect impacts compound. A traditional IRA distribution can push you into a higher IRMAA tier (Medicare premium surcharge), reduce ACA subsidy, or trigger SS taxation cliffs.
- infoQCDs from traditional IRAs (age 70½+) don't count as income per IRC §408(d)(8) — up to $111,000/year for 2026 (per IRS Notice 2025-67). Direct gift to qualified charity from your IRA.
Traditional IRA: Every Dollar Is Income
Distributions from a traditional IRA (including SEP and SIMPLE IRAs) are reported on Form 1099-R and entered on Form 1040 line 4b as taxable income. This means:
- Increases your AGI — which determines federal tax bracket, state tax (in most states), and many phase-out thresholds.
- Increases MAGI for IRMAA purposes — Medicare Part B and Part D premium surcharges. The 2026 first-tier IRMAA threshold is $109,001 single / $218,001 MFJ. A distribution that pushes you over a threshold can cost hundreds per month in extra premiums.
- Increases MAGI for ACA purposes — premium tax credit phase-out under §36B.
- Triggers Social Security taxation via the IRC §86 "provisional income" calculation. SS becomes 50% taxable above $25,000 (single) / $32,000 (MFJ) of provisional income; 85% taxable above $34,000 / $44,000.
- May trigger Net Investment Income Tax (NIIT) at MAGI above $200,000 single / $250,000 MFJ. The 3.8% NIIT doesn't apply to retirement distributions directly, but the IRA distribution can lift other income above the NIIT threshold.
Roth IRA Qualified Distribution: $0 Income
A qualified distribution from a Roth IRA is defined under IRC §408A(d)(2): the account is at least 5 years old AND one of (you're 59½+, disabled, paid to a beneficiary after death, or used for a first-time home purchase up to $10,000). When both conditions are met, the entire withdrawal — both contributions and earnings — is reported on Form 1040 line 4a (gross distribution) but $0 on line 4b (taxable amount).
This means a qualified Roth distribution does NOT:
- Increase your AGI or taxable income
- Affect your IRMAA tier
- Reduce ACA subsidy eligibility
- Trigger Social Security taxation
- Push you into a higher tax bracket
This is the strongest single argument for the Roth structure for high-net-worth retirees: tax-bracket management. You can pull from a Roth IRA in any amount without tax-side-effects, useful for staying under IRMAA cliffs or keeping ACA subsidies intact in early retirement.
Roth IRA Non-Qualified Distribution: It Depends
If you don't meet the qualified-distribution test (e.g., you're 50 and the account is only 3 years old), the IRC §408A(d)(4) ordering rules apply: contributions first, conversions oldest-first, earnings last. Different layers have different tax treatment:
- Contributions out: $0 income, no penalty. Always tax-free regardless of age or 5-year rule.
- Conversions out (within 5-year window, under 59½): $0 income (already taxed at conversion), but 10% penalty under IRC §72(t)(2)(F) applies to the conversion principal.
- Earnings out (under 59½, 5-year rule unmet): Ordinary income tax on the earnings + 10% penalty under IRC §72(t) unless an exception applies (disability, first-time home, qualified education, SEPP, etc.).
The custodian's 1099-R reports the gross distribution; you reconcile the layer breakdown on Form 8606. Most modest non-qualified withdrawals stay within contribution basis and are fully tax-free.
Earned Income vs. IRA Distributions for Contribution Purposes
Separate question with a related answer: IRA distributions are NOT "earned income" for the purpose of qualifying you to MAKE new IRA contributions. To contribute to an IRA in a given year, you need earned income (wages, self-employment, etc.) per IRC §219(f)(1). A retiree taking IRA distributions doesn't suddenly have earned income letting them contribute.
So a retiree at 70 with $50,000 of traditional IRA distributions but $0 of W-2 or self-employment income cannot contribute to an IRA that year — the distributions don't count as earned income. They DO count as gross income for tax-bracket purposes, just not as the type of income that qualifies you to contribute.