How Engineering Executives Structure Their 401(k) to Pay Under 10 Percent Effective Tax in Retirement

A 62-year-old erstwhile engineering VP astatine a ample nationalist tech institution logs into the brokerage 1 past clip earlier handing successful the laptop. Across a accepted 401(k), Roth 401(k), HSA, and taxable account, the equilibrium reads astir $4 million. The question circulating connected Bogleheads and r/financialindependence threads: tin a household spending $200,000 a twelvemonth really wage nether 10% successful national tax?

For this household, the reply is yes. The effectual national complaint lands person to 1% than to 10%. The mechanics are reproducible, but lone by households that spent the erstwhile decennary routing dollars into 4 relationship types alternatively of one.

The 4 buckets, sized connected intent

The currency travel is sourced deliberately, and the series is the strategy:

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1. $80,000 from the Roth 401(k): zero national tax, zero interaction connected AGI, zero effect connected Medicare premiums oregon Social Security taxability.

2. $40,000 from the HSA, spent connected qualified aesculapian expenses (Medicare Part B and Part D premiums number erstwhile enrolled): taxation escaped in, taxation escaped out.

3. $50,000 from the accepted 401(k): mean income.

4. $24,000 successful Social Security claimed astatine 62, reduced from a $30,000 superior security magnitude astatine 67. Up to 85% is taxable.

Only the bottommost 2 are taxed. The Roth and HSA dollars are invisible to AGI, to the IRMAA lookback, and to the Social Security inclusion formula. That invisibility is the full trick.

Why this household lands successful the 0% superior gains bracket

Taxable income runs astir $50,000 from the accepted 401(k) positive $20,400 from the taxable information of Social Security, oregon astir $70,400. Once some spouses are 65, deductions stack fast: the 2026 modular deduction for joined filing jointly of astir $32,200, positive the elder add-on of $1,650 per qualifying spouse, positive the caller elder bonus deduction worthy up to $6,000 per spouse. That bonus phases retired astatine 6% per dollar of MAGI supra $150,000 MFJ, truthful astatine this AGI the afloat $12,000 applies.

Total deductions onshore adjacent $47,500. Taxable income drops to astir $22,900, comfortably successful the 12% bracket. Federal tax: astir $2,300 connected $200,000 of currency flow. That is astir 1%.

The structural bonus is the 0% semipermanent superior gains bracket, which holds arsenic agelong arsenic taxable income stays nether $96,950 MFJ successful 2026. The taxable brokerage tin propulsion disconnected different $40,000 to $50,000 successful qualified dividends oregon harvested gains and inactive beryllium thing federally. It besides keeps MAGI good beneath the archetypal 2026 IRMAA threshold of astir $212,000 MFJ, avoiding Medicare Part B and Part D surcharges that tin tally respective 100 dollars a period per spouse.