RMDs are required by the IRS to prevent individuals from indefinitely deferring taxes on their retirement savings. Since contributions to accounts like traditional IRAs and 401(k)s are often tax-deductible, and earnings grow tax-deferred, the government mandates these withdrawals to collect tax revenue. The SECURE Act 2.0 changed the RMD age to 73 for those turning 72 after December 31, 2022, and will increase it to 75 starting in 2033.