5 Year-End Moves to Maximize Your 2025 Retirement Savings

Retirement planning is about consistency, commitment and making the most of every dollar. Whether you are just starting your career or you are in your peak earning years, the goal remains the same: maximizing your retirement nest egg by contributing as much as you can to investments that will result in long-term growth.

In 2025, maximizing your retirement savings means moving beyond simply relying on your employer's matching contribution. By understanding and utilizing the full range of accounts available to you, from your 401(k) and IRA to the highly efficient HSA, you can put yourself on track to financial independence.

For high-income workers, the standard retirement advice — "save more" — is only half the battle. When you are in your peak earning years, the real challenge is not accumulation, but optimization. Standard contribution limits can quickly become a ceiling, yet advanced strategies exist that allow you to move substantial wealth into tax-protected environments.

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Here are five high-impact moves retirement savers can make this year to supercharge and ensure long-term growth.

1. Utilize the mega backdoor Roth strategy

This advanced move is one of the most powerful savings strategies available to high income earners. You can place tens of thousands of dollars into a Roth account, bypassing regular Roth IRA income limits if you have access to a 401(k) plan that permits it.

Action: This strategy allows you to bypass the low annual contribution limits for Roth IRAs. It requires an employer-sponsored plan, such as a 401(k), that meets two criteria:

• Allows after-tax (non-Roth) contributions
• Allows in-service distributions or in-plan Roth conversions

In 2025, the total contribution limit (employee + employer + after-tax) for a defined contribution plan is $70,000 (or higher with catch-up). Once the employee maxes out the standard $23,500 (or $31,000 catch-up age 50+, $34,750 super catch-up for ages 60–63) and receives any employer match, the employee can contribute the remaining gap (up to the $70,000/$77,500/$81,250 respectively) using after-tax dollars.

Benefit: Those after-tax funds are then rolled or converted into a Roth IRA. This allows the employee to place tens of thousands of dollars into a Roth account, where all future growth and withdrawals are tax-free, far exceeding the standard Roth IRA contribution limit.

2. Automate and increase contributions 

The easiest way to ensure you save more is to remove the decision-making process and use automatic escalation. While originally a feature of some automatic enrollment plans for participants who did not make an election, it has become a popular add-on.

If your plan allows, you may choose to have your contribution rate increased at specified intervals. Contributions are automatically bumped up once a year, for example, on January 1 or when annual raises are announced. This is a practice known as "Save More Tomorrow," which was pioneered by Richard H. Thaler and Shlomo Benartzi, behavioral economists at the University of Chicago and UCLA, respectively.

Action: Set up automatic payroll deduction increases for your 401(k) and recurring transfers to your IRA and/or HSA accounts.

Benefit: Increasing your 401(k) contribution percentage by 1% to 2% each time you receive a raise or bonus is a painless way to save more and get to the recommended 15% contribution level. Why is the method successful? Because you never experience the pain from a drop in take-home pay, since that increased savings rate is coordinated with your pay raises.

3. Consider a strategic Roth conversion

One way to head off Medicare’s income-related monthly adjustment amount (IRMAA) is to reduce your MAGI in retirement, as your income spikes when you start taking RMDs (Required Minimum Distributions). Consider a strategic Roth conversion by converting all or a portion of your traditional IRA to a Roth IRA.

Unlike contribution limits for IRA accounts, there are no dollar amount limits on how much you can convert to a Roth IRA and the IRS does not put a cap on the number of Roth conversions you can make per year or over a lifetime.

Strategy: Pay the income tax on the converted amount now, ensuring the money grows tax-free and withdrawals are tax-free in retirement, reducing future RMDs.

Benefit: Paying the tax now minimizes RMDs in the future, providing greater control over retirement cash flow and Medicare premiums (IRMAA). Due to this surcharge, high-income individuals can pay up to 85% of the actual Part B and Part D premiums. For 2026, the top Part B surcharge is $487.00 per month, and for Part D, the surcharge tops out at $91.00. That's an additional $6,936 annually for individuals and $13,872 for couples.

4. Rebalance and optimize investments

Ensure your asset allocation is appropriate for your timeline and risk tolerance. You should also be aware of the fees charged to your retirement accounts; the higher the expense ratio, the more of your potential returns are being used to cover the fund's costs.

Action: If you have been passive, rebalance your portfolio to your target allocation. While most people intuitively understand the danger of too much risk, too little risk can inflict its own damage in the form of lower returns. You could be a disciplined saver who ultimately falls short of retirement goals.

Optimize: Confirm you are using low-cost index funds or ETFs within your accounts to minimize expense ratios, which can significantly erode long-term gains. While you can’t control the markets or interest rates, you can control the costs you pay. Carefully comparing expense ratios of potential investment funds can help you maximize your long-term returns and achieve your financial goals.

5. Maximize all contribution buckets

For all employees, but especially high-net-worth (HNW) workers, maxing out your employer-sponsored retirement accounts is the foundational move. However, don't overlook additional savings opportunities when it comes to traditional and Roth IRAs.

Since you have the option to make 2025 contributions until the due date of your 2025 tax return, you can punt on the contribution and make it next year.

For 2025:

Contributions to your workplace retirement plan. Eligible employees can contribute $23,500 to a 401(k), 403(b), and most 457 plans. If you are age 50 or older, contribute the maximum $7,500 in catch-up contributions for a total limit of $31,000. Those aged 60-63 may contribute an additional $11,250, bringing the maximum contribution limit to $34,750.

Contributions to an IRA. Even if you have a workplace plan, maximize your annual contribution to a traditional or Roth IRA.

For 2025, contribute up to $7,000 to a traditional or Roth IRA. If you are 50 or older, you can contribute an additional $1,000, bringing the total to $8,000.

High-income earners should review the income limits (MAGI) for the Roth IRA contribution phase-out to ensure they are eligible to contribute. There are no income limits on traditional IRA contributions, only on the deductibility of contributions.

Health savings account (HSA) contributions. If enrolled in a high-deductible health plan (HDHP), the HSA acts as a powerful, triple-tax-advantaged retirement vehicle. You can use these funds to reimburse yourself for Medicare premiums, coinsurance, copayments, and other expenses not covered by Medicare, such as dental expenses.

One caveat: Medigap premiums are not treated as qualified medical expenses. However, after age 65, withdrawals for any other purpose are taxed only as ordinary income and are not assessed a penalty.

For 2025, contribute the maximum $4,300 (self-only) or $8,550 (family), plus an additional $1,000 catch-up contribution if age 55 or older.

Making the most of your money and time

While there are advanced moves for higher earners, such as the mega backdoor Roth strategy, the most crucial step for every saver is fully utilizing the options available to you, especially your employer match and your IRA.

Focus on automating your contributions and commit to increasing your savings rate by even a small percentage every year. Retirement is a long journey, and the disciplined, deliberate actions you take in 2025 — whether that's funding a Roth IRA for the first time or maximizing your HSA — will compound into substantial security down the road.

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