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Retirement Tax Guide for 2026
Retirement tax planning covers contribution limits, account types, conversion strategy, RMD rules, and inherited account distributions. This guide explains the 2026 limits, the SECURE Act 2.0 changes, the backdoor Roth, the mega backdoor Roth, and the inherited IRA 10 year rule, written for taxpayers making decisions not for advisors selling products.
What are the 2026 retirement contribution limits?
For 2026 (estimates pending IRS confirmation): Traditional and Roth IRA combined contribution limit 7,500 (8,500 if age 50 or older). 401(k), 403(b), 457(b), and Thrift Savings Plan elective deferral limit 23,500 (31,000 with age 50 catch up; 35,000 with super catch up at ages 60 to 63 under SECURE 2.0). Defined contribution overall limit (employee plus employer) 70,000 (77,500 with catch up).
SEP IRA contribution limit 70,000 or 25 percent of compensation, whichever is lower. SIMPLE IRA elective deferral 16,500 (20,000 with age 50 catch up; up to 22,500 with super catch up if employer adopts the higher limits provision). HSA contribution limit 4,400 self only and 8,800 family coverage (5,400 and 9,800 with age 55 catch up).
These limits index for inflation each year. Final 2026 numbers will be published by the IRS in late 2025 and should be confirmed before contributing the maximum.
Should I contribute to a Traditional IRA or Roth IRA?
Traditional contributions may be deductible (subject to income limits if you or spouse are covered by a workplace plan) and grow tax deferred; distributions in retirement are taxed as ordinary income. Roth contributions are after tax; growth is tax free; qualified distributions are tax free.
The right choice depends on whether your tax rate today is higher or lower than your expected rate in retirement. Younger workers and those in lower brackets often prefer Roth. Higher earners near retirement often prefer Traditional. Many people benefit from mixing both.
Roth IRA contributions phase out at higher MAGI (estimated 2026: 165k-180k single, 245k-260k MFJ). Above the phase out you cannot contribute directly; the backdoor Roth is the workaround.
How does the backdoor Roth IRA work?
The backdoor Roth is a two step process for high earners blocked from direct Roth contributions. Step one: contribute up to the IRA limit to a Traditional IRA on a non deductible basis (MAGI is too high for the deduction anyway). Step two: convert the Traditional IRA to a Roth IRA, paying tax on any earnings between contribution and conversion (typically minimal if conversion is prompt).
The catch is the pro rata rule. If you have any pre tax money in any Traditional IRA, SEP IRA, or SIMPLE IRA at year end, the conversion is taxed proportionally on the pre tax portion. To execute a clean backdoor Roth, the strategy assumes no other pre tax IRA balances.
Form 8606 must be filed to track the basis of nondeductible contributions and the conversion. Filing Form 8606 every year of contribution is critical; otherwise the IRS may treat the conversion as fully taxable in a future audit.
What is the mega backdoor Roth?
The mega backdoor Roth uses the after tax contribution feature of certain 401(k) plans. After maxing the 23,500 employee deferral limit, some plans allow additional after tax contributions up to the 70,000 overall defined contribution limit. These after tax contributions can then be converted to Roth, either through an in plan Roth conversion or by rolling them out to a Roth IRA.
Not all 401(k) plans support this. Two features are required: after tax contributions allowed and either in plan Roth conversion or in service withdrawal of after tax money. Employers must opt in to these features.
Solo 401(k) plans are good candidates because the business owner can choose a plan document that supports both features. For employees, check with the plan administrator before assuming this strategy is available.
When are RMDs required and how much?
Required Minimum Distributions begin at age 73 under SECURE 2.0 (was 70.5 originally, then 72 from SECURE Act 2020). The age increases to 75 in 2033. RMDs apply to Traditional IRAs and most employer plans (401k, 403b, governmental 457). Roth IRAs have no RMD during the original owner's lifetime; Roth 401k RMDs were eliminated by SECURE 2.0 starting in 2024.
The RMD amount equals the prior year end account balance divided by the IRS Uniform Lifetime Table life expectancy factor for your age. At age 73 the factor is 26.5 (RMD ≈ 3.77 percent). The factor decreases each year, so the RMD percentage rises slowly through retirement.
Penalty for missed RMD is 25 percent of the amount that should have been withdrawn (was 50 percent before SECURE 2.0). The penalty drops to 10 percent if corrected within 2 years.
What is the inherited IRA 10 year rule?
Under the SECURE Act of 2020, most non spouse beneficiaries of inherited IRAs (including Roth IRAs) must distribute the entire account by the end of the tenth year after the original owner's death. The pre 2020 'stretch IRA' rule allowing distributions over the beneficiary's life expectancy was eliminated for most beneficiaries.
Exceptions (Eligible Designated Beneficiaries) can still stretch: surviving spouses, minor children of the decedent (until majority), disabled or chronically ill individuals, and beneficiaries less than 10 years younger than the decedent. Trust beneficiaries follow specific rules depending on trust type.
If the decedent had begun RMDs (was over 73 at death), the IRS in 2024 clarified that non spouse beneficiaries subject to the 10 year rule must take annual RMDs in years 1 through 9 plus distribute the remainder by year 10. If the decedent died before RMD age, the 10 year rule applies but no annual RMDs are required during years 1 through 9.
Is a Roth conversion right for me?
A Roth conversion makes sense when current marginal tax rate is lower than expected retirement rate. Common scenarios: gap years between retirement and Social Security claim, low income years (job loss, sabbatical, business loss), and ahead of Roth IRA backdoor execution.
The conversion creates ordinary income tax on the converted amount. Spread conversions across multiple years to fill up lower tax brackets without pushing into higher brackets. Pay the tax from non IRA money to avoid eroding the conversion benefit.
Watch the IRMAA cliff for retirees on Medicare. Conversion income raises MAGI two years later and can trigger Medicare premium surcharges. Plan conversion size to stay below the IRMAA brackets unless the long term math justifies the surcharge.
How does the Qualified Charitable Distribution (QCD) work?
Once you reach age 70.5, you can direct up to 108,000 dollars per year (2026 limit, indexed) from your Traditional IRA directly to a qualifying public charity. The amount is excluded from income, satisfies your RMD requirement up to the QCD amount, and does not require itemizing.
The QCD is particularly powerful for retirees who would otherwise take the standard deduction. It effectively makes charitable giving deductible without itemizing. Qualifies even if you have not yet reached RMD age, as long as you are 70.5 by the contribution date.
The QCD must go directly from the IRA custodian to the charity. A check made out to the charity but mailed by the custodian to the IRA owner counts (so long as it is endorsed and delivered to the charity). A distribution to your account followed by a personal check to the charity does not qualify.
What is the SECURE Act 2.0 super catch up?
Starting in 2025, individuals aged 60 to 63 can make 'super catch up' contributions to 401(k), 403(b), governmental 457(b), and SIMPLE plans. The super catch up is the greater of 10,000 dollars or 150 percent of the regular age 50 catch up (so roughly 11,250 in 2025 estimate). Indexed thereafter.
This applies in the year the individual turns 60, 61, 62, or 63. Starting in the year they turn 64, the catch up reverts to the regular age 50 amount.
The super catch up is mandatory Roth for high earners (over 145,000 in prior year wages from the same employer), starting in 2026 (delayed from 2024). Plan sponsors had to amend their plans to add Roth treatment for super catch up contributions.
What about 529 plans for education?
529 plans are state sponsored education savings accounts. Contributions are not federally deductible (some states give a deduction; Arkansas allows up to 5,000 per person). Earnings grow tax deferred. Withdrawals are tax free if used for qualified education expenses (tuition, fees, books, room and board, computers, K-12 tuition up to 10,000 per year per child).
Unused 529 funds can be rolled to a Roth IRA for the beneficiary starting in 2024 under SECURE 2.0, subject to limits: account must have been open at least 15 years, rollover is capped at the annual IRA contribution limit, and lifetime cap is 35,000.
Superfunding: contributions can be front loaded with up to 5 years of annual gift exclusion (95,000 single or 190,000 MFJ as a couple in 2026 estimates), elected on Form 709. Useful for grandparents or affluent parents wanting to maximize compounded growth.
What are HSA tax advantages?
HSA contributions are tax deductible. Growth is tax deferred (and tax free for qualified medical expenses, even decades later). Withdrawals for qualified medical expenses are tax free. After age 65 withdrawals for any reason are taxable as ordinary income but no penalty (similar to a Traditional IRA at that point).
Triple tax advantage. The HSA can function as an additional retirement account by paying current medical bills out of pocket and letting the HSA grow. Save the receipts; you can reimburse yourself decades later for those past medical expenses, tax free.
Eligibility requires high deductible health plan coverage and no other disqualifying coverage (including FSA other than limited purpose). Contributions phase out as you transition to Medicare; pro rate the contribution limit in your last year before Medicare.
Can I take an early withdrawal without the 10 percent penalty?
Several exceptions to the 10 percent early withdrawal penalty exist for distributions from IRAs and 401(k) plans before age 59.5. Common exceptions: substantially equal periodic payments (Rule 72t), death, disability, qualified medical expenses over 7.5 percent of AGI, qualified education expenses (IRA only), first time home purchase up to 10,000 lifetime (IRA only), birth or adoption up to 5,000.
Rule of 55 applies to 401(k) plans only: if you separate from service in or after the calendar year you turn 55, distributions from that plan are not subject to the 10 percent penalty. Does not apply to IRAs.
SECURE 2.0 added several new penalty free distribution categories: emergency expenses up to 1,000 once per 3 years (must be repaid), domestic abuse victim distributions up to 10,000 or 50 percent of vested balance, terminally ill distributions, federally declared disaster distributions up to 22,000.
How do Social Security benefits get taxed?
If your provisional income (AGI plus tax exempt interest plus 50 percent of Social Security) is below 25,000 single or 32,000 MFJ, no Social Security is taxed. Above that, up to 50 percent of benefits become taxable. Above 34,000 single or 44,000 MFJ, up to 85 percent of benefits become taxable. These thresholds have not been indexed for inflation since 1983.
Federal taxation does not change based on whether you are taking benefits early or late. Some states tax Social Security; many do not. Arkansas does not tax Social Security.
WEP (Windfall Elimination Provision) and GPO (Government Pension Offset) reduced benefits for some retirees with non covered pensions; both were repealed by the Social Security Fairness Act in January 2025.
How should retirees order withdrawals from different accounts?
There is no universal rule, but a common framework: spend taxable account first (preserves tax deferred growth in retirement accounts), Traditional IRA next (use up the lower brackets), Roth last (preserves tax free growth and is most valuable to heirs).
Modify based on tax bracket management. In high income years, lean on Roth. In low income years, take Traditional distributions even before RMDs to fill up lower brackets. Roth conversions in low income years move money from Traditional to Roth at lower tax cost.
Coordinate with Social Security. Delaying Social Security to age 70 increases benefits roughly 8 percent per year and the increase is for life. Retirees with health and longevity often benefit from spending down portfolio assets to delay Social Security.
Where can I get more help?
For retirement contribution and distribution strategy specific to your situation, contact Amanda directly. The Planning membership at 125 dollars per month is built for this kind of multi year tax strategy: Roth conversions, RMD planning, Social Security claiming, account ordering, and IRMAA management.
Free authoritative sources: IRS Publication 590-A (IRA contributions), Publication 590-B (IRA distributions), Publication 575 (pension and annuity income), Publication 939 (general rule for pensions and annuities). Schwab and Fidelity have decent calculators for Roth conversion and RMD planning, but they will not see your other tax facts.
For Social Security claiming strategy, ssa.gov has the official benefit estimator. The Open Social Security calculator at opensocialsecurity.com runs many scenarios.
Need help applying this to your situation?
This guide explains the rules. Applying them to your facts is what year round advisory is for. Book a call with Amanda.