Forgotten 401(k)s hit record $2.1T as job insecurity leaves retirement savings stranded

A growing crisis is quietly unfolding in the US retirement system as more Americans leave their jobs – often not by choice – and lose track of their 401(k) savings.

New research from Capitalize, a retirement account transfer platform, shows that forgotten 401(k) accounts have surged to a record $2.1 trillion in assets, with nearly 32 million accounts left behind as of July 2025. The trend is being fueled not by a wave of voluntary job-hopping, but by a labor market marked by layoffs, hiring freezes, and economic uncertainty.

The latest data from Capitalize show that the number of forgotten or left-behind 401(k) accounts has nearly doubled over the past decade, with an almost 30% increase in assets since mid-2023.

The average balance in these accounts has climbed to $66,691, up 18% in just two years. These stranded accounts now represent close to one-fourth of all 401(k) assets nationwide .

This surge comes at a time when the US job market is showing clear signs of strain. The number of job openings increased marginally to 19,000 in August, according to the latest JOLTS report this week, with 0.98 job openings for every unemployed person. The most recent unemployment rate reading shows it ticked up to 4.3% in July. Amid headlines of major employers across sectors announcing significant layoffs, the average job search now stretches nearly six months, according to some estimates.

In this environment, many workers are not actively seeking new opportunities but instead are holding tightly to their current roles, a trend some analysts have labeled “job hugging.” But for those who do lose their jobs – whether through layoffs or restructuring – the process of managing old 401(k) accounts often falls by the wayside. The manual and confusing nature of the rollover process means that many simply leave their accounts behind, sometimes for years.

“The ‘forgotten 401(k)’ problem continues to grow in size and complexity, with Americans leaving behind millions of accounts each year as they switch jobs,” said Gaurav Sharma, CEO at Capitalize. Sharma added that an outdated rollover process and confusion at the point of job change remain obstacles for most savers.

The financial consequences of neglecting these accounts can be severe. Capitalize estimates that a forgotten 401(k) could cost an individual more than $500,000 in foregone retirement savings over 30 years in a worst-case scenario. Fees and suboptimal asset allocations in neglected accounts can erode balances over time, especially when compared with well-managed portfolios.

A separate analysis by PensionBee highlights another risk: the automatic transfer of small 401(k) balances into Safe Harbor IRAs, which are designed to preserve rather than grow capital. These accounts often carry higher fees and lower returns than traditional 401(k)s, and the impact compounds with each job change.

According to PensionBee, a typical worker who leaves behind a $4,500 account in a Safe Harbor IRA could see it grow to just $5,507 by retirement – compared to $25,856 if rolled over to a 401(k) earning 5%. Across multiple accounts, the difference can exceed $90,000.

“Safe Harbor IRAs represent a critical blind spot in America’s retirement system,” said Romi Savova, CEO of PensionBee. “The lack of transparency in these accounts is particularly troubling, as most assume that the money they put towards their retirement will remain theirs. The difference between investment defaults matters enormously.”