Core Insights - A significant number of Americans have abandoned 31.9 million 401(k) accounts, totaling $2.1 trillion in retirement savings, highlighting a major retirement concern [1][2] Group 1: Risks of Multiple Accounts - Having too many retirement accounts increases the risk of forgetting about them, complicating asset allocation tracking and leading to potential duplicate investments [2][4] - Unknown asset allocation becomes a challenge when managing multiple accounts across different custodians, making it difficult to rebalance portfolios effectively [3][4] Group 2: Tax Planning Complications - Managing pre-tax, Roth, and after-tax funds across various accounts complicates tax planning, increasing the likelihood of errors with IRS documentation [5] Group 3: Beneficiary Tracking Issues - The complexity of tracking beneficiaries increases with each additional account, raising the risk of outdated beneficiary designations leading to unintended distributions [6] Group 4: Backdoor Roth Conversions - Multiple retirement accounts complicate the process of executing backdoor Roth conversions, as IRS rules can become intricate, potentially resulting in tax liabilities if not managed correctly [7][8]