US Retirement Accounts: Only Fund Roth — Never Touch Pre-Tax IRA / 401K

In 30 seconds: For US workers with spare cash, the contribution order is ① fill the Roth first → ② a regular brokerage account → never put money into a Pre-Tax (Traditional) IRA/401K. James flatly calls Pre-Tax accounts an “asset poison pill,” with three fatal problems: RMDs force withdrawals into your top marginal bracket, a later Roth conversion is still taxed high, and worst of all it’s double-taxed as an inheritance (estate tax + the heir’s income tax). Which account holds which asset is covered in what goes in Roth vs Traditional.¹

Contribution priority

With spare cash:¹

Fill the Roth first (Roth growth is tax-free for life, and so are withdrawals).
Then a regular (taxable) brokerage account.
Do not put money into a Pre-Tax (Traditional) IRA/401K.

(Related: which asset goes in which account — aggressive QLD/QQQ in Roth, conservative BOXX/QQQI/cash in Traditional or taxable — is in what goes in Roth vs Traditional. This page is about whether to use the account type at all.)

Pre-Tax’s three fatal problems

1. RMDs force withdrawals → pushed into your top bracket

A Pre-Tax account has Required Minimum Distributions (RMDs) at a statutory age. Once the balance has grown large (e.g. into the tens of millions), those forced withdrawals push your marginal rate into the top bracket — you can’t choose “not to take it this year.”¹

2. A retirement-age Roth conversion is still taxed high

“Can’t I just convert it to Roth slowly after I retire?” — the rate is just as high. Example: $2M in a Pre-Tax IRA at ~15%/yr — the growth alone means you’d need to convert ~$340k a year to finish in ten years, and every conversion is added to that year’s income, so the rate won’t be low.¹

3. As an inheritance: double taxation (the worst)

Pre-Tax IRA’s biggest problem isn’t RMDs — it’s being double-taxed when it becomes an estate:¹

Total estate below the exemption (~$13M): no estate tax, but when heirs withdraw from the Pre-Tax IRA they owe ordinary income tax. Example: inherit a $2M Pre-Tax IRA that forces ~$340k/yr out; the heir already has income, so stacked on top the marginal rate can hit the top bracket. The tax you didn’t pay, your heirs pay — more.
Pre-Tax IRA above the exemption (e.g. $20M): it’s taxed once by estate tax, and then when heirs withdraw the remainder (principal + growth, all of it) it’s taxed again as income — estate tax once, income tax again: double taxation.

By contrast, Roth has no RMD, tax-free growth and withdrawals, and passes cleanly to heirs. This also echoes don’t sell your life for money: the surplus you can’t spend becomes inheritance — and Pre-Tax makes that inheritance taxed twice at the handoff.

Already stuck with a Pre-Tax IRA — how do you get it out? (conversion tools and timing)

If you already hold a Pre-Tax (traditional) IRA, James’s advice isn’t to leave it alone but to convert it to Roth gradually in your low-income years, using a “conversion calculator” to size each year’s conversion. 00476 is dedicated to this:²

Use a conversion calculator: a CLEC student (Linda) built a bilingual online calculator for Traditional→Roth, posted in the channel’s materials. You enter a few numbers — pre-tax IRA balance, expected annual return, your age, your income — and it outputs how much to convert each year (Amount to Convert), so you move money out without being pushed into a high bracket.
Convert in “low-income years”: the key is to catch the years after retiring but before Social Security / before RMDs kick in — income is lowest then, so converting Pre-Tax to Roth in tranches carries the lightest tax. Once converted, the money’s growth and withdrawals in the Roth are tax-free for life, with no RMD and clean for heirs (see above).
Beware the insurance pitch: James specifically warns that insurance agents increasingly try to roll your Traditional IRA into their insurance accounts (even invoking things like a 7702 policy as a “tax tool”). That usually swaps a tax problem for a pricier, more locked-in insurance problem — don’t fall for it (see 儲蓄險與壽險陷阱).²

⚠️ No deck backing: 00476 has no corresponding deck; this section is transcript-only, and the calculator’s demo figures (age, amounts) vary with your inputs and shouldn’t be treated as fixed — rely on your own calculation and a tax professional.

Non-US persons should avoid US accounts entirely

James also stresses that non-US tax residents should not touch US accounts — beyond the retirement-account tax issues, there’s estate tax ($60k exemption, 40% rate) and inheritance difficulty. Non-US investors should use Ireland-domiciled UCITS ETFs instead — see UCITS ETFs for non-US investors.³

⚠️ This page covers retirement-account choice for US tax residents, involving the interaction of RMDs, Roth conversion, estate and income tax — the rules are complex and adjust yearly (exemption thresholds, RMD age, etc.). Education only, not personalized tax advice; research or consult a tax professional before acting.

CLEC James, 00551 “Pre-Tax IRA’s three fatal problems: RMD, high tax rate, double taxation,” opening talk and slides, 2026-01-31. Transcript (with timestamps): raw/transcripts/長篇/00551…; slide “Pre-Tax three problems / don’t touch”: raw/docs/簡報資料/00551…. ↩ ↩² ↩³ ↩⁴ ↩⁵
CLEC James, long session 00476 “The Government-and-Rich Scheme; Essential Tools for Traditional-to-Roth IRA Conversion,” 2024-07-20, the conversion calculator and low-income-year conversion @10:30–16:00, the insurance pitch @1:08:00. This session has no corresponding deck; transcript at raw/transcripts/長篇/00476…; the calculator’s demo figures vary with inputs and shouldn’t be treated as fixed. ↩ ↩²
CLEC James, 00549 “Investing isn’t picking the ticker, it’s picking the system: non-US tax residents avoid US accounts…,” 2026-01-17. See UCITS ETFs for non-US investors. ↩