Core Insights - The tax bracket for most Americans is determined by salary during working years, but in retirement, individuals have more control over their income sources and tax implications [1][2] - Many retirees are unaware that improper withdrawal strategies can lead to significant tax liabilities, potentially costing tens of thousands of dollars [2][3] Withdrawal Strategies - A common strategy is to withdraw from taxable accounts first, followed by tax-deferred accounts like traditional IRAs and 401(k)s, saving Roth accounts for last; this may seem beneficial initially but can increase lifetime tax bills [3][5] - An example is provided of a retiree named Jane, who has $1.5 million in various accounts; delaying withdrawals from her 401(k) could lead to higher tax brackets and increased taxation on Social Security benefits due to required minimum distributions (RMDs) starting at age 73 [4][5] Tax Implications - Wealthy retirees like Jane may face additional tax burdens such as the Net Investment Income Tax (NIIT) and potentially the Alternative Minimum Tax (AMT), depending on their income and deductions [5]