The White House and both houses of Congress will soon be under common control. How will this affect the nation’s retirement system? The truth is, no one knows. But buckle up for the proverbial bumpy ride: plenty of uncertainty and a wide range of possible outcomes — including a renewed interest in expanding 401(k) "Rothification."
The president-elect and his House and Senate majorities have promised tax cuts as well as major change and disruption on many fronts. To simply re-up the individual tax rate cuts and estate tax relief enacted in the 2017 Tax Cuts and Jobs Act — most of which expire in 2025 — will drive a big legislative train through Congress, costing an estimated $4.5 trillion.
So Congress seems likely in 2025 to remain ravenous for revenue. That being the case, it will be hard for the nation’s second largest tax expenditure (retirement benefits) to escape notice entirely. For example, Congress could take a renewed interest in expanding 401(k) “Rothification.”
This reduces revenue losses in the earlier years — the budget window — by replacing pretax/traditional plan or IRA contributions with Roth contributions (which cost revenue not when contributed but only years later when distributed tax-free).
Congress could shift contributions from pretax/traditional to Roth by, for example, reducing the maximum limit on pretax contributions — unless the incoming president decides to tweet any major Rothification proposal dead in its tracks, as he did when House Republicans floated the idea in 2017.
The potential use of Rothification and other retirement-related revenue raisers (such as repealing the future age 75 beginning date for required minimum distributions or capping tax-favored retirement accumulations at a very high level) will be subject to countervailing pressures.
On the one hand, Congress has generally had a "hands-off" practice of preserving retirement-related revenue raisers solely to offset the cost of other retirement legislation. On the other hand, given enough pressure to find pay-fors, Congress could conceivably overcome its traditional restraint and “poach” on retirement-related raisers to pay for the 2025 nonretirement tax cuts.