Traditional IRA Deduction Calculator 2026

How Traditional IRA Deductions Actually Work

The traditional IRA has two separate concepts that get confused all the time: the contribution limit (how much you can put in) and the deduction limit (how much you can write off on your taxes). They line up when you aren't covered by a workplace retirement plan, or when your income is below the phase-out floor. For everyone else, they can diverge.

The deduction is an above-the-line item on Schedule 1, which means it reduces your AGI directly. That's powerful. A $7,500 deduction at a 22% marginal rate saves you $1,650 in federal tax, and may also drop you below thresholds for other credits, IRMAA surcharges, or ACA premium tax credits.

Every contribution lands in one of three buckets. Fully deductible contributions reduce taxable income now and grow tax-deferred until retirement. Nondeductible contributions create after-tax basis that you track on Form 8606. Those still grow tax-deferred, but only the earnings get taxed at withdrawal. Partially deductible means you get a piece of each, which happens inside the phase-out range.

The "active participant" rule

Coverage by a workplace plan is the single biggest factor in whether you get a full deduction. The IRS counts you as covered if any of these apply: a 401(k), 403(b), 457(b), SEP-IRA, SIMPLE IRA, or a defined benefit pension where you accrued any benefit during the year.

The shortcut is to look at Box 13 on your W-2. If "Retirement plan" is checked, you're covered, even if you didn't contribute a dime, as long as the employer made a contribution to your account or you were eligible for the defined benefit plan. For joint filers, each spouse's coverage status is evaluated independently, then combined into one of the phase-out scenarios in the table below.

MAGI vs. AGI vs. taxable income

For traditional IRA purposes, MAGI starts with your AGI (Form 1040, line 11) and adds back student loan interest, the foreign earned income exclusion, savings bond interest exclusion, employer adoption assistance, and the IRA deduction itself. For the vast majority of filers, MAGI ends up within a few hundred dollars of AGI. If you have any of those add-backs, the difference matters.

Taxable income is a different beast: it's MAGI (or AGI) minus the standard deduction or itemized deductions. The marginal-rate estimator above subtracts the 2026 standard deduction from your MAGI to bucket you into a federal bracket, which is a reasonable proxy if you take the standard deduction.

Strategy: deductible, nondeductible, and the backdoor Roth

If you're below the phase-out floor, the play is straightforward: deduct the full amount. If you're partially phased out, you'll deduct what you can; the rest becomes nondeductible basis that you'll need to track on Form 8606 every year until you eventually withdraw or convert it. If you're fully phased out, the standard move is the backdoor Roth: contribute to a traditional IRA on a nondeductible basis, then convert it to a Roth shortly after. The catch is the pro-rata rule. If you have other pre-tax IRA balances, the IRS forces you to convert proportionally and you'll pay tax on most of the conversion.

2026 Traditional IRA Deduction Phase-Out by Filing Status

All ranges below come from IRS Notice 2025-67 (released November 2025) and the inflation adjustments in Rev. Proc. 2025-32.

2025 vs 2026: what changed

The 2026 base IRA contribution limit also bumps from $7,000 to $7,500, with the catch-up rising from $1,000 to $1,100 for filers 50 or older. That brings the maximum 2026 IRA contribution to $8,600.