US Proposes Limits on Super Rich Tax-Sheltered Retirement Accounts

Democratic Senator Ron Wyden of Oregon and Representative Richard Neal of Massachusetts have introduced new legislation aimed at preventing ultra-wealthy individuals from using retirement accounts as tax shelters. The proposal seeks to impose limitations on the immense fortunes accumulated in tax-advantaged plans like 401(k)s and Individual Retirement Accounts (IRAs). This move is specifically designed to stop high-income individuals from exploiting these accounts beyond their intended purpose.

According to data released by Congress' nonpartisan Joint Committee on Taxation, over 200 individuals collectively held more than $85 billion in tax-sheltered retirement accounts by the end of 2024, averaging $409 million per person. Furthermore, more than 32,000 individuals each held over $10 million in their retirement accounts, with an average balance of $17 million.

The proposed bill targets individuals with modified adjusted gross incomes (MAGI) exceeding $400,000 for single filers or $450,000 for married couples filing jointly. For those who meet these income thresholds and whose combined balances in IRAs and defined contribution retirement plans exceed $10 million in the prior year, further contributions to traditional or Roth IRAs would be prohibited. Additionally, mandatory distributions would be required for balances exceeding this limit. Specifically, if combined balances exceed $10 million, 50% of the excess amount must be withdrawn annually. If balances surpass $20 million, a distribution equal to the lesser of the amount needed to bring the total balance down to $20 million or the aggregate balance in Roth IRAs and designated Roth accounts in defined contribution plans would be mandated. Withdrawals from Roth accounts would not be taxed, as contributions are made with after-tax dollars.

The current tax treatment of traditional IRAs and 401(k)-style retirement accounts resulted in approximately $249 billion in foregone or deferred revenue for the U.S. government in 2025. Proponents of the bill argue that the existing system allows the wealthy to shelter massive fortunes, deviating from the system's original intent to provide a lifeline for working Americans seeking retirement security. The proposed legislation is viewed as a step towards ensuring tax fairness and redirecting taxpayer subsidies to those who genuinely need assistance.

Similar provisions were previously proposed under former President Barack Obama and as part of former President Joe Biden's Build Back Better Act, but they failed to become law. While the latest bill is unlikely to pass in the current Republican-controlled Congress, it could be revisited if Democrats regain control of the House or Senate in 2027. Some of the mandatory distribution rules outlined in the proposal are slated to become effective for tax and plan years beginning after December 31, 2033.