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Retirement Planning Strategy: Defuse Your 401(k) Time Bomb

  • Writer: Matthew Cartwright
    Matthew Cartwright
  • Nov 30, 2025
  • 3 min read

Updated: Dec 7, 2025


couple relaxing in retirement on a beach front patio

Retirement Planning Strategy: Defuse Your 401(k) Time Bomb

Max your 401(k). Get tax breaks now. Sounds great! But a tax trap waits. It's Required Minimum Distributions, or RMDs. This retirement planning strategy guide shows the dangers of using tax-deferred savings accounts like 401(k)'s, Traditional IRA's, and 403(b)'s. Learn how Roth conversions save you and your heirs your hard earned money.


What Are RMDs?

RMDs force you to take money out. When? RMDs start at ages 73/75. Age 73 if born 1951-1959. Age 75 if born 1960 or later.


Pull from 401(k)s, IRAs, 403(b)s. How much? Take last year's balance. Divide by IRS life number. At 73, use 26.5.​ Skip your RMD? Pay 25% tax penalty. Fix it quick? Down to 10%.


You must pull cash even if you don't need it. This jumps your income. Higher tax bracket hits. Medicare costs rise. Social Security taxes grow too. Roth IRAs skip RMDs while you live. Traditional plans force payouts. That's the trap in your retirement planning strategy.​


Tax Break Trap

Upfront tax savings feels good. In 22% bracket? Contribute $20,000 at 35 (or smaller amounts over several years) and save $4,400 over that period. But growth bites back. Say you estimate an 8% (inflation adjusted) return each year. By age 73, it is around a $400,000 balance.


Traditional IRA/401(k) scenario:

  • Age 35: Put in $20,000

  • Tax Savings: $3,330 (assumed to be to reinvested)

  • Growth Rate (inflation adj): 8%

  • Age 73: Grows to $433,969

  • RMD Year 1: $16,376 (approximately)

  • Tax: $3,603

  • Net Income: $12,773


Roth IRA/401(k) scenario:

  • Age 35: Put in $20,000

  • Tax Savings: $0

  • Growth Rate (inflation adj): 8%

  • Age 73: Grows to $372,506 (approximately)

  • RMD (for comparison only): $14,057

  • Tax: $0

  • Net Income: $14,057


As you can see, even if you assume a reinvestment of your tax savings, the Roth still returns more to you due to the savings on tax inefficiency. Your small savings today? Lost to big taxes later. Smart retirement planning strategy pays tax now for free growth ahead.​


Retirement Planning Strategy: Save Your Estate

Heirs hate traditional accounts. The Secure Act 2.0 mandated that inherited IRAs and Roth IRAs must be drawn down over 10 years. The difference? The Roth draw downs are tax free. Meaning if your heirs, usually children who are working and making their own money, will get taxed at higher rates than perhaps even you on those draw down distributions.


Roth changes it all. No RMDs for you. Heirs and spouse may make distributions tax-free. The account is exempt from the estate tax . 2025 rule: 40% tax over $13.99 million per person.


Convert your traditional to Roth account as soon as possible. Pay some tax today to avoid significant taxation later on. Lock in tax-free growth. Heirs and spouse are protected. No RMD fights. One of the only true tax savings retirement planning strategy for your family.​


Best Retirement Planning Strategy: Start Conversions Now

Do conversions in low-tax years (and avoid 10% penalty on early withdrawals). Spread conversions over time. Fill your low brackets first. Tools like Roth conversion ladders help. Work with a CPA or financial planner to model it.


Why wait? RMD age nears fast and if you wait until you're retired it can be too late. Tax rates may rise. Capital gains growth makes the bill huge. Retirement planning strategy winners act early.


Pay $44,000 tax now on $200,000 convert over a 10-20 year period. Future RMDs? Gone. Heirs? Tax-free. Estate? Secured and protected from estate tax. Taking these small steps now equals a big long-term win.


Why Cartwright CPA Fits Your Retirement Planning Strategy

We build your plan. Run the RMD math. Test Roth shifts. Show tax paths. Cover 401(k)s, IRAs, estates.


We will provide you with no guesswork, clear steps, help save thousands, and protect your family's wealth. Cartwright CPA Tax & Wealth Advisory LLC has the experience to guide you along your path to generational wealth creation.


Born before 1960? RMDs start soon. After? Plan ahead. Call us today. Review your accounts. Build your retirement planning strategy. Defuse the bomb before its too late.


Questions? "When to convert?" "How much?" We can provide you with clear and confident answers. Schedule a free consultation today and secure your future.

 
 
 

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