Could Working After Age 70 Increase Social Security?

For those still working into their 70s, it’s natural to wonder whether continued income leads to higher Social Security payments. Benefits may stop growing from delayed retirement credits after age 70. However, additional work can still boost payments if those earnings replace lower-earning years. In that sense, Social Security benefits can still increase after age 70 under certain circumstances.

A financial advisor can help you create a financial plan to maximize your savings and investments for retirement.

Can Working After Age 70 Increase Your Benefits?

Social Security benefits are based on your top 35 years of earnings. ¹ You can see your full earnings record by creating a My Social Security account at SSA.gov. If you lack 35 years of earnings, even a minuscule salary after age 70 can increase your benefit slightly. This is because it will replace any year with a zero.

If you have 35 years of earnings, your benefits increase only if your current earnings exceed one of your previous 35 working years. Social Security replaces the lowest year and adjusts your benefits accordingly.

Congress created Social Security in 1935 to reduce poverty among seniors. ² The Social Security benefits calculation is weighted more heavily towards lower earners. This means that if you have a lot of zero-income and low-income years, you’ll see a larger increase in your benefits by working.

People with 35 years of high income will not see as big a jump by working in their 70s, even if they are replacing lower-income years.

How to Get a Benefits Increase

You do not need to do anything to get a benefits increase in almost all cases. The Social Security Administration (SSA) receives your earnings after the Internal Revenue Service accepts the W-2 information from your employer. If you’re self-employed, this occurs after your tax return is accepted and processed. ³

SSA automatically recalculates your benefits. This happens throughout the year, but can happen as late as December of the following year. For example, Social Security may not update your 2025 earnings until December 2026.

You’ll receive a lump-sum payment for the monthly difference. It is retroactive to the start of the year—even if the adjustment happens late. If you have direct deposit, you’ll likely see a payment for a seemingly random amount in your account. This often happens before you even get the letter explaining what it is.

If you set up a My Social Security account, you’ll have access to all of the letters SSA is sending. That way, you won’t have to wait for an explanation in the mail.

How Working After Age 70 Impacts Your Taxes

As Benjamin Franklin famously said, “In this world, nothing is certain except death and taxes.” You may be officially on retirement benefits, but you still have to file and pay income taxes.

Social Security benefits count toward your taxable income. You’ll pay federal income taxes on up to 85% of your benefits when filing as single with a combined income exceeding $25,000. You also owe taxes if you file a joint return and your combined income exceeds $32,000. ⁴

Working and receiving benefits at the same time will likely push you over this threshold if you weren’t already. To avoid a surprise tax bill, update your W-4 withholding with your employer. You can choose to have taxes withheld from your Social Security benefits by filing a W-4V. ⁵

In addition to federal income taxes, Social Security benefits are taxable in eight states in 2026. ⁶

• Colorado
• Connecticut
• Minnesota
• Montana
• New Mexico
• Rhode Island
• Utah
• Vermont

Social Security does not have a way to withhold benefits for state income taxes. Therefore, you’ll need to adjust your withholding through your employer or set money aside yourself to pay state taxes.

How Working After Age 70 Impacts Medicare Premiums

Earnings after age 70 can affect how much you pay for Medicare, particularly Part B and Part D premiums.

Medicare premiums start with a base amount. However, the final cost is determined using your modified adjusted gross income (MAGI) from two years earlier. ⁷ As a result, higher income from work could push you into a higher premium bracket under the Income-Related Monthly Adjustment Amount (IRMAA) rules. ⁸

For example, if you’re earning well into your seventies, the SSA may use that income to determine whether you owe surcharges on top of the standard Medicare premiums. These surcharges are applied on a sliding scale, with higher earners paying significantly more.

In 2026, monthly IRMAA surcharges for Part B can range from $284.10 to $689.90, depending on income level. IRMAA applies to Medicare beneficiaries with MAGI exceeding $109,000 ($218,000 for married couples filing jointly). ⁹

It’s also worth noting that IRMAA calculations include not only wages but also income from self-employment, investments and other sources. If you experience a life event that reduces your income, such as retirement or reduced hours, you can submit Form SSA-44 to request lower premiums. ¹⁰

The timing of your earnings and tax filings plays a key role in how working after 70 shapes your Medicare costs.

How an Advisor Can Help You Decide When to Claim Social Security

If you are still working in your late 60s or early 70s, deciding when to claim Social Security becomes a timing problem, not a rules question. You may be eligible to claim now, delay for a higher benefit or keep working to replace lower-earning years in your record. The decision matters because once you claim, your benefit structure is largely locked in.

The choices involved go beyond picking an age. You are deciding how long to delay benefits, whether post-70 earnings will meaningfully raise your payment, how claiming affects taxes while you are working and how higher income interacts with Medicare premiums. Each of these decisions affects cash flow in different years, not just the total benefit amount.

A financial advisor helps you model these trade-offs using your actual earnings history. That includes several steps.

• Reviewing your top 35 earning years
• Estimating whether current wages will replace a low or zero year
• Projecting benefit differences at various claiming ages
• Showing how those payments interact with wages, required withdrawals and portfolio income

Advisors also factor in IRMAA brackets and Social Security taxation thresholds to show net income rather than just gross benefits.

Questions to Ask Your Financial Advisor

It is a good idea to ask your financial advisor specific questions in the discussion.

• If I claim at 70 and keep working, how much does my benefit actually increase?
• Does delaying to 70 still make sense if my current income pushes me into higher Medicare premiums?
• Would claiming earlier reduce my tax exposure while I’m earning wages?
• How long do I need to live for delaying benefits to pay off in my situation?

Advisor value shows up because small timing choices can create lasting cost differences. Claiming too early can reduce lifetime income, while claiming too late may increase taxes or Medicare costs during peak earning years.

An advisor helps you line up Social Security, wages, taxes and Medicare so the decision reflects how your income actually behaves, not just the headline benefit amount.

Bottom Line

Working after age 70 can increase your Social Security benefits, especially if you didn’t earn much in your younger years and are earning significantly more now. Keep in mind that increasing your income can affect your taxes and Medicare premiums, and plan accordingly.

Retirement Tips for Beginners

• A financial advisor can help you create a financial plan for your retirement needs. Finding a financial advisor doesn’t have to be hard. SmartAsset’s free tool matches you with vetted financial advisors who serve your area, and you can have a free introductory call with your advisor matches to decide which one you feel is right for you. If you’re ready to find an advisor who can help you achieve your financial goals, get started now.
• Aside from the contributing to a tax-advantaged retirement account, consider other ways to set aside money for the future. A health savings account, for example, offers a tax-advantaged way to save for medical expenses. If you remain healthy, you could use the money for any purpose at all after age 65 without incurring a tax penalty.

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