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Retirement Tax Strategy California

KDA Inc. — Licensed CPAs & Enrolled Agents | Updated April 2026 | California-specific
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Retirement Tax Strategy Overview

Retirement planning and tax planning are inseparable for California business owners and high-income individuals. California's 13.3% top income tax rate makes tax-deferred retirement savings particularly valuable — every dollar contributed to a retirement plan saves up to 50.3 cents in combined federal and California income tax. KDA integrates retirement planning into every client's annual tax strategy, ensuring retirement plan contributions are maximized and distributions are structured to minimize lifetime taxes.

Retirement Plan Types & Contribution Limits

Plan Type2025 Contribution LimitCatch-Up (Age 50+)Best For
Traditional/Roth IRA$7,000$1,000All earners
SEP-IRA25% of compensation, max $70,000NoneSelf-employed, small business owners
Solo 401(k)$70,000 (combined employee + employer)$7,500Self-employed with no employees
SIMPLE IRA$16,500 employee deferral$3,500Small businesses with employees
401(k) (employer plan)$23,500 employee deferral$7,500Employees and business owners with employees
Defined Benefit PlanUp to $280,000 annual benefitN/AHigh-income owners over 50

Roth vs. Traditional: California Perspective

The Roth vs. traditional decision is more complex for California residents than for residents of other states. Traditional contributions reduce current income tax at up to 50.3% combined rate. Roth contributions are made with after-tax dollars but grow and are withdrawn tax-free. The key question: will your tax rate be higher now or in retirement? For most high-income California residents, the current tax rate is very high — making traditional (pre-tax) contributions more advantageous. However, if you plan to leave California before retirement, Roth conversions done while in California may be disadvantageous — you pay California tax now but avoid it in a no-income-tax state in retirement.

Roth Conversion Strategy

A Roth conversion moves funds from a traditional IRA to a Roth IRA, paying income tax now in exchange for tax-free growth and withdrawals in retirement. KDA's Roth conversion strategy: (1) Convert in years when your income is temporarily lower (sabbatical, business transition, early retirement before Social Security begins). (2) Convert up to the top of your current tax bracket — but not into the next bracket. (3) Consider the impact on Medicare premiums (IRMAA surcharges apply at higher income levels). (4) For California residents planning to leave California, consider whether to convert before or after the move. (5) Model the break-even point — how many years of tax-free growth are needed to recover the conversion tax cost.

Required Minimum Distributions

Required Minimum Distributions (RMDs) are mandatory annual withdrawals from traditional IRAs and qualified retirement plans beginning at age 73 (under SECURE Act 2.0). RMDs are taxable as ordinary income — at up to 37% federal and 13.3% California. KDA's RMD planning strategies: (1) Roth conversions before RMDs begin — reduce the traditional IRA balance before age 73 to minimize future RMDs. (2) Qualified Charitable Distributions (QCDs) — direct up to $108,000 per year from your IRA to charity; the QCD satisfies your RMD and is excluded from income. (3) Aggregate RMDs — if you have multiple IRAs, you can take the total RMD from any one or combination of IRAs. (4) Still-working exception — if you are still working at 73, you can delay RMDs from your current employer's 401(k).

California Retirement Tax Rules

California has several state-specific retirement tax rules: (1) California taxes all retirement income — unlike many states, California does not exempt Social Security, pension income, or IRA distributions from state income tax. (2) California does not conform to the Roth IRA income limits — California follows federal Roth IRA rules, including the income limits for direct contributions. (3) California does not tax Social Security — wait, actually California does not tax Social Security benefits (this is one exception). (4) California pension income — California government pensions are taxable to California residents; out-of-state pensions are taxable if the recipient is a California resident. KDA provides California-specific retirement tax planning as part of every retirement strategy engagement.

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Frequently Asked Questions

Common Questions About Retirement Tax Strategy California

Does California tax Social Security benefits?
No. California does not tax Social Security benefits. This is one of the few retirement income exemptions California provides. However, California does tax pension income, IRA distributions, and 401(k) distributions — unlike some states that exempt these from state income tax.
For a self-employed person with no employees, a Solo 401(k) is generally the best option — it allows the highest contribution limits ($70,000 per year, plus $7,500 catch-up if over 50) and allows Roth contributions. For high-income owners over 50 who want to maximize deductible contributions, a defined benefit plan combined with a Solo 401(k) can allow $200,000–$400,000 in annual deductible contributions. KDA designs the optimal retirement plan structure for each client.
The optimal Social Security claiming age depends on your health, other income sources, and tax situation. Delaying Social Security from age 62 to 70 increases your benefit by approximately 76%. However, if you have significant IRA balances, it may be advantageous to take Social Security early and do Roth conversions with the IRA funds while you are in a lower bracket. KDA models the lifetime tax impact of different Social Security claiming strategies.
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