Americans are urged to maximize contributions to tax-advantaged accounts before the end of the year, especially for 401(k), 403(b), and 457(b) plans, as the deadline is Dec. 31. The 2025 401(k) contribution limit is $23,500, with catch-up options for older workers. Missing this deadline means losing out on future savings opportunities.

Research shows that only 14% of Americans contributed the maximum to their 401(k) last year, despite record-high savings rates. Missing out on contributions can significantly impact long-term savings, with potential losses of hundreds of thousands of dollars over time. Employers also note that many workers miss out on maximizing employer matches.

Beyond 401(k) contributions, other financial moves must be completed by Dec. 31, such as HSA contributions, tax-loss harvesting, Roth conversions, and FSA expenditures. Timely action is necessary to take advantage of these strategies and avoid potential tax implications or loss of funds.

To avoid missing out on contribution opportunities, individuals are advised to review their current 401(k) contributions, contact HR to adjust contributions if needed, consider their overall financial situation, and set up automatic increases for next year. Taking proactive steps before the year-end deadline can lead to significant long-term financial benefits.

Read more at Yahoo Finance: The Money Move People Will Regret Not Making Before the New Year Begins