The $401,357 withdrawal-order mistake

$401,357. That's the price of tapping your accounts in the wrong order.

Same couple, same $3.51M portfolio, same $90,000 a year in spending. The only difference: which account they drew from first — and which they saved for last.

Illustrative example — Imagine a hypothetical couple, ages 55 and 53, with $3.51M saved ($2.81M tax-deferred, $500K Roth, $200K taxable), spending $90K/year, in California. Fixed 5.5% return, so the comparison isolates withdrawal order and nothing else. Check out this scenario yourself

Same money in. Same money out. $401,357 stays in their pocket — purely from the order of withdrawals.

In the first approach, they just wing it based on gut feeling. "Roth is tax free, why pay tax now? Let's use that up first". That would turn out to be a big mistake, a $401K mistake not taking from 401(k) first.

Why the order matters

Think of every tax-deferred dollar as carrying a tax lien. A Roth dollar is worth a full dollar: the tax is already paid, and it spends as a full dollar. A 401(k) dollar has a lien attached — every dollar you withdraw is taxed as income, at whatever bracket you land in that year. The order you tap your accounts decides which tax years absorb that lien, and at what price.

Spend the Roth first and you've burned your tax-free dollars early, leaving the 401(k) to compound into ever-bigger required withdrawals later. It's bigger due to two reasons.

• Inflation makes you withdraw more in future for maintaining the same lifestyle.
• RMD forces you to withdraw more than you need for your expenses putting you in a higher tax bracket.

On the other hand, if you spend taxable first, you are drawing the 401(k) deliberately to fill the lower brackets, and save the Roth for last: the lien gets paid at the cheapest available rates, year after year. And the Roth money you leave behind for the next generation? It's entirely tax free.

It's not just the tax bill that changes. The portfolio itself lives a different life:

RetireMetrics is an educational planning tool, not a certified financial planner, and nothing here is financial advice. Tax rules change; your situation is your own — treat this as a framework for asking better questions, not as instructions.