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    Tax Year 2026 · IRC §408A / §415(c)

    Backdoor & Mega Backdoor Roth Eligibility Checker

    Updated Reviewed for 2025 & 2026 tax years

    Instantly check if you need the Backdoor Roth, how much of a conversion the pro-rata rule will tax, and how much after-tax 401(k) room you have for the Mega Backdoor.

    IRS-Sourced

    Do I need to use the Backdoor Roth strategy in 2026?

    In 2026, direct Roth IRA contributions phase out at $153K–$168K MAGI (single) and $242K–$252K (MFJ). Above the ceiling, direct Roth is $0 and you must contribute nondeductibly to a Traditional IRA and convert. If you have any pre-tax IRA balance, the §408(d)(2) pro-rata rule taxes most of the conversion.

    • 2026 IRA contribution: $7,500 (+$1,100 at age 50+).
    • 2026 §415(c) DC ceiling: $72,000.
    • 2026 elective deferral: $24,500.
    • Pro-rata aggregates all Traditional/SEP/SIMPLE IRAs at year-end.
    • Mega Backdoor requires plan support for after-tax + in-plan Roth or in-service distribution.

    Source:IRS Notice 2025-67

    Your basics

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    Mega Backdoor Roth (optional)

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    Roth IRA · 2026

    $0

    Max direct Roth contribution

    Phase-out range$242,000 – $252,000
    Base limit (lesser of dollar limit or compensation)$7,500
    StatusPhased out
    You need the Backdoor Roth — and with no pre-tax IRA balance, your conversion is essentially tax-free.

    Pro-rata on conversion

    Tax-free portion$7,500
    Taxable portion$0

    Mega Backdoor Roth

    §415(c) ceiling$72,000
    Employee + employer$35,500
    After-tax room$36,500
    You can contribute up to $36,500 after-tax and convert to Roth.

    Want the deep-dive?

    Read the full 2026 Backdoor Roth Guide

    Related Tools & Guides

    RMD CalculatorRoth Conversion CalculatorHSA CalculatorIs Social Security Taxable?State Social Security Tax (2026)Required Minimum Distributions Guide

    Sources & References

    Primary references used for this content

    Notice 2025-67

    2026 Retirement Plan Limits

    401(k), IRA, SIMPLE 2026 limits

    View on irs.gov

    Publication 590-A

    Contributions to IRAs

    IRA contribution rules

    View on irs.gov

    Publication 590-B

    Distributions from IRAs

    IRA withdrawals and RMDs

    View on irs.gov

    ✓3 primary sources; links re-checked on a weekly rotation by the source watcher

    Disclaimer: This calculator provides estimates for educational purposes only. Not tax, legal, or financial advice. Results may vary based on your specific circumstances. Consult a qualified CPA or tax professional for personalized guidance.