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Published on April 25, 2025 by Kelly Walker

401(k) Investment Tips: Strategies for Smart Retirement Contributions

Retirement savings plans like 401(k)s offer significant tax advantages. As employer-provided, defined contribution plans named after IRS sections, 401(k)s may include employer matching contributions in some programs. Both traditional and Roth 401(k) options exist. Pretax employee contributions lower taxable income, but retirement withdrawals are taxed in a 401(k). Conversely, employees contribute after-tax income to Roth 401(k)s, receiving no tax deduction for the contribution year, but qualifying distributions are tax-free.

401(k) Fund Types

While mutual funds remain the most common, ETFs are gaining popularity in 401(k) plans. Both mutual funds and ETFs hold stocks for federal investors. Funds vary from conservative to aggressive, described as balanced, valuable, or reasonable across financial firms. Here are several fund strategies:

Tips on Investing Through 401(k)

Consider Your Age

Your age and years until retirement are crucial factors. Generally, younger federal investors can afford to invest more in risky stock funds for potentially higher returns. As retirement approaches, shifting to safer investments is advisable. The traditional advice of subtracting your age from 100 for stock investment has shifted to 110 or 120 due to increased life expectancy. For instance, a 30-year-old might invest 90% in equities, while a 70-year-old might choose 50%. Experts recommend saving 15% of your income for retirement, and possibly more if catching up from previous shortfalls.

Maximize Your Tax Credit

Tax on your 401(k) savings is due upon withdrawal. For 2024, the IRS set a $23,000 contribution limit for the Thrift Savings Plan, most 457 plans, and 401(k) and 403(b) plans, up from $22,500. Low to moderate-income savers can also claim the saver’s tax credit, offering a $1,000 or $2,000 credit on retirement plan contributions.

Know How Much You Need

Financial advisors often recommend saving enough to replace 80% of your pre- retirement income through retirement accounts and other sources like social security or a pension. Calculate your required balance using a conservative estimate of 5-6% annual 401(k) returns. For a quick estimate, multiply your pre-retirement income by 12. For example, if you earn $50,000 annually, aim for $600,000 in your 401(k). Utilize online retirement calculators for a more comprehensive analysis and consider consulting a financial advisor.

Decide on Diversification

Diversifying your 401(k) balance across various investment types is essential. This strategy allows you to earn profits from multiple asset classes while protecting your balance from downturns. Choose an asset allocation strategy you can maintain through market fluctuations and resist frequent trading or market timing.

Review your asset allocations annually, but avoid micromanaging. Be cautious with company stock, which can narrow your portfolio and increase risk. Vesting constraints may prevent you from keeping shares if you leave or change jobs.

Stay Until Vested

Employer 401(k) matches are beneficial, but often require employees to stay for a specific period to receive full benefits. Understand your company’s vesting schedule and ensure you stay long enough to secure your matched contributions.

Avoid High-Fee Funds

Managing a 401(k) incurs costs, typically deducted from investment returns. For example, on a $25,000 401(k) earning 7% annually over 35 years, a 0.5% annual fee would grow to $227,000, whereas a 1.5% fee reduces it to $163,000. While fees are unavoidable, aim to minimize them.

Work Above Your Employer’s Default Rate

Many employers automatically enroll new hires in 401(k) plans at a default rate, often around 3%. Verify if your employer enrolls you automatically and consider setting a higher contribution rate, ideally 10% to 15% of your pretax income, to maximize your retirement savings.