Retirement Tax Strategies for Individuals
2026 U.S. Rules — Verified Limits & SECURE 2.0

Overview

Retirement accounts are the most powerful tax-advantaged tools available to individuals — allowing taxpayers to reduce current taxable income, grow investments tax-deferred or tax-free, manage tax brackets across a lifetime, and execute Roth conversions to shift tax liability to lower-rate years.

In 2026, two significant updates apply: the 401(k) employee deferral increased from $23,500 to $24,500, the IRA limit increased from $7,000 to $7,500, and the SECURE 2.0 Roth catch-up mandate takes full effect — requiring employees whose 2025 FICA wages exceeded $150,000 to make all 2026 catch-up contributions on a Roth basis only.

2026 Contribution Limits at a Glance

All figures per IRS Notice 2025-67. Catch-up contributions are in addition to base limits shown.

Catch-Up Rules & 2026 Roth Mandate

Traditional IRA

A Traditional IRA allows contributions of up to $7,500 ($8,600 age 50+) with potential above-the-line deductibility — available regardless of whether the taxpayer itemizes. The deductibility phases out for taxpayers covered by a workplace plan.

• Non-deductible contributions are always permitted regardless of income — creating after-tax basis tracked on Form 8606. Required for Backdoor Roth strategy.
• All withdrawals taxed as ordinary income. RMDs required at age 73.
• Best for: Taxpayers whose current marginal rate exceeds the expected retirement rate.

Roth IRA — Limits & Phase-Outs

• Qualified distributions (5-year rule + age 59½) are entirely tax-free — including all investment gains.
• No RMDs during the owner's lifetime — optimal for estate planning and long-term tax-free compounding.
• Contributions (not earnings) can be withdrawn at any time without tax or penalty.
• Best for: Taxpayers expecting higher future tax rates; young investors; low-income years.

Backdoor Roth IRA

A legal two-step strategy allowing high-income taxpayers above the Roth phase-out to contribute indirectly. Fully confirmed as permissible. OBBBA did not restrict this strategy.

• Step 1: Make a non-deductible Traditional IRA contribution of up to $7,500 ($8,600 age 50+). No income limit on non-deductible contributions. No deduction claimed; basis tracked on Form 8606.
• Step 2: Convert the Traditional IRA to Roth. If account holds only the non-deductible contribution with no earnings, conversion is tax-free. Execute promptly to minimize taxable earnings accumulation.
• File Form 8606 every year this strategy is used — tracks the after-tax basis and prevents double taxation.

401(k), 403(b), 457(b)

Mega Backdoor Roth

After-tax (non-Roth) contributions to a 401(k) up to the total plan limit, then converted to Roth — bypassing both the $7,500 IRA limit and Roth IRA income restriction.

• Plan must explicitly allow: (1) after-tax non-Roth contributions AND (2) in-service in-plan Roth conversions. Most plans do not offer both. Confirm with the plan administrator.
• Convert promptly after each after-tax contribution — earnings on after-tax contributions are taxable upon conversion.

Roth Conversions

A taxable event moving pre-tax retirement balances to Roth — included in ordinary income for the conversion year. Despite the current tax cost, strategic conversions can meaningfully reduce lifetime taxes by locking in current lower rates.

When Conversions Are Most Valuable

• Low-income years: Business transitions, early retirement, parental leave — years when income has temporarily dropped create opportunities to convert at lower marginal rates.
• Conversion window, ages 60–72: After employment income ends but before RMDs begin at 73. Often the lowest-income years of adult life. Convert to fill the 12% and 22% brackets annually.
• Market downturns: Converting depressed account values means paying tax on a smaller balance — and the recovery occurs inside Roth, tax-free.
• RMD reduction: Each dollar converted permanently reduces the pre-tax balance that will generate mandatory distributions at 73 — lowering forced taxable income, IRMAA exposure, and Social Security benefit taxation.

Required Minimum Distributions (RMDs)

RMD Management Strategies

• QCDs (age 70½+): Up to $108,000 per year (2026) transferred directly from IRA to qualified charity. Satisfies RMD; excluded from AGI entirely — bypasses income tax and the 0.5% charitable deduction floor.
• Roth conversions before 73: Each converted dollar permanently reduces the RMD-generating balance. Begin modeling at age 60–65.
• RMD aggregation: For Traditional IRAs, the total RMD can be taken from any combination of IRA accounts. For 401(k)s, each plan requires a separate calculation and distribution.

Tax Diversification — Three Buckets

Building balances across all three bucket types provides withdrawal flexibility to manage taxable income in retirement — drawing from each bucket strategically based on the year's income picture.

Step-by-Step Guidance

Practical Examples

Common Mistakes

• 1 Not using the Backdoor Roth IRA when income exceeds the phase-out. High-income taxpayers who believe Roth is unavailable miss $7,500–$8,600 of annual Roth accumulation. The Backdoor Roth strategy is fully legal and available at any income level.
• 2 Triggering the pro-rata rule by ignoring pre-tax IRA balances. Pre-tax SEP-IRA or Traditional IRA balances make the Backdoor Roth conversion largely taxable. Roll pre-tax IRA balances into an employer 401(k) before December 31 to clear the denominator — the solution is straightforward but must be executed before year-end.
• 3 Making catch-up contributions pre-tax when the 2026 Roth mandate applies. Employees with 2025 FICA wages above $150,000 must make all 2026 catch-up contributions as Roth. A pre-tax catch-up by an affected employee is an excess deferral requiring corrective action. Verify FICA wages against the threshold before the first 2026 payroll.
• 4 Missing the Roth conversion window between ages 60 and 72. These are often the lowest-income years of retirement. Failing to convert during this window forces larger mandatory distributions at 73 into potentially higher brackets — with no option to reduce the taxable amount.
• 5 Not filing Form 8606 every year the Backdoor Roth is executed. Form 8606 tracks non-deductible basis. Without it, future distributions are treated as fully taxable ordinary income — double-taxing the after-tax contributions.
• 6 Not using QCDs for charitable giving after age 70½. QCDs are excluded from AGI entirely — bypassing both income tax and the 0.5% charitable deduction floor. Regular charitable givers with IRA balances should use QCDs rather than donating from taxable accounts and taking the deduction subject to the floor and the 35% high-earner cap.
• 7 Overfunding pre-tax accounts without modeling future RMD and IRMAA impact. Maximum pre-tax contributions produce the largest current deduction but can create a pre-tax balance that generates large forced RMDs at 73 — pushing income into higher brackets and triggering Medicare surcharges. A blend of pre-tax and Roth contributions, modeled for the full retirement arc, typically outperforms maximum pre-tax.
• 8 Using outdated contribution limits. The 2026 limits increased from 2025: 401(k) deferral $23,500 → $24,500; IRA $7,000 → $7,500; IRA catch-up $1,000 → $1,100. Using prior-year limits results in leaving tax-advantaged space on the table for the full year.

Hanmi CPA Insight