SECURE 2.0 Changes Force High Earners to Rethink 401(k) Strategy. Here’s the Math.

Quick Read

• Mandatory Roth catch-up rules successful 2026 destruct the upfront deduction worthy $2,560 for precocious earners successful the 32% bracket.

• A $2.3M 401(k) increasing astatine 6% produces six-figure RMDs astatine 73, stacking with Social Security to trigger IRMAA surcharges and ~40% effectual rates.

• Brokerage accounts headdress concern taxes astatine 23.8% versus astir 40% connected forced RMDs, a quality that amounts to $64,000 connected $400,000 of status withdrawals.

• A caller survey identified 1 azygous wont that doubled Americans' status savings and moved status from dream, to reality. Read much here.

A scholar connected a Bogleheads forum precocious posed the question that frames this full piece: astatine 58 with $2.3 cardinal already saved successful a accepted 401(k), wherefore support stuffing much pretax dollars into an relationship future-you volition hate?

The default planner reply inactive defaults to "max it out." For precocious earners with seven-figure balances, that reply is incorrect by 2026. Three regularisation changes person flipped the math: the SECURE 2.0 mandatory Roth catch-up for those who earned much than $150,000 successful 2025, the IRMAA premium surcharges that thrust connected apical of withdrawals, and a taxation codification wherever semipermanent superior gains inactive apical retired astatine 23.8% portion the apical mean complaint climbs to 37%.

Cutting 401(k) deferrals successful fractional and redirecting the freed currency to a taxable brokerage is the cleaner way astatine this balance.

Why the modular proposal breaks astatine $2.3M

The 2026 modular worker deferral bounds is $24,500. Add the property 50-plus catch-up of $8,000 and the headdress rises to $32,500. The 60-to-63 ace catch-up pushes it to $35,750, but that does not use yet to a 58-year-old.

Starting this year, if W-2 wages crossed $150,000 successful 2025, that catch-up indispensable spell into a Roth 401(k). No upfront deduction. For a 55-year-old successful the 24% bracket, the aged rules chopped the national measure by astir $1,900 connected an $8,000 catch-up; the caller rules propulsion that payment to zero. A 58-year-old successful the 32% bracket loses astir $2,560 of contiguous taxation structure connected the aforesaid contribution.

Read: Data Shows One Habit Doubles American's Savings And Boosts Retirement

Most Americans drastically underestimate however overmuch they request to discontinue and overestimate however prepared they are. But information shows that people with 1 habit person much than treble the savings of those who don't.

Now look astatine wherever the existing $2.3M is heading. At a 6% instrumentality done property 73 erstwhile RMDs begin, the equilibrium compounds toward a materially larger fig without different dollar added. The archetypal RMD divides by the IRS Uniform Lifetime Table origin of 26.5, producing a forced withdrawal adjacent a six-figure sum. Every dollar is mean income, stacked connected apical of Social Security and immoderate pension.