Stack up to $46,500/yr into Roth on top of normal contribution limits.
If your 401(k) plan allows after-tax contributions AND in-service withdrawals or Roth in-plan conversions, you can contribute up to the full $69K annual §415 limit — the delta above employee + employer contributions goes in after-tax, then immediately converts to Roth. Result: $30K–$46K/yr extra Roth on top of the $23K standard deferral. The single largest Roth-building loophole for W-2 high earners.
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Multiply the $10M §1202 exclusion across multiple trusts.
4% corporate tax + 0% capital gains for bona fide residents.
Stack the $500K primary-home exclusion on top of a 1031 deferral.
Convert Traditional to Roth during sabbaticals or business-loss years.
Capitalize property taxes and interest on undeveloped land.
Deduct now, control forever, employ heirs.
Ordinary loss (not capital loss) on failed small biz — up to $100K.
Buy leveraged real estate inside your IRA — tax-deferred or tax-free.