You've spent your career dreaming of retirement. But now that you're here, you're restless. Or maybe you need extra income. Or perhaps you simply love what you do and aren't ready to stop completely.
Working in retirement is increasingly common. Nearly 20% of Americans 65 and older are still working, and many more retirees take on part-time work or consulting roles. It can provide income, purpose, and social connection.
But here's what catches many working retirees by surprise: the tax implications can be more complex than when you were simply earning a paycheck. Your retirement income doesn't exist in a vacuum; it interacts with your work income in ways that can increase your tax bill, affect your Social Security benefits, and potentially push you into higher tax brackets.
How Work Income Affects Your Social Security Benefits
If you're receiving Social Security before your full retirement age and continue working, you might trigger the earnings test, which temporarily reduces your benefits.
The Earnings Test Rules
For 2026, if you're under full retirement age for the entire year, Social Security deducts $1 in benefits for every $2 you earn above $24,480. That's only $2,040 per month before you start losing benefits.
During the year you reach full retirement age, the limit increases to $65,160, and Social Security deducts $1 for every $3 you earn above that limit. Once you reach full retirement age, there's no earnings limit you can earn any amount without affecting your Social Security benefits.
Here's the silver lining: benefits withheld due to the earnings test aren't permanently lost. When you reach full retirement age, Social Security recalculates your benefit to account for the months when benefits were reduced or withheld. But in the short term, this reduction can significantly impact your cash flow.
Strategic Timing
If you're considering returning to work before full retirement age, run the numbers carefully. Sometimes it makes more sense to delay claiming Social Security until you stop working or reach full retirement age, allowing your benefit to grow while you earn work income.
The Social Security Taxation Trap
Even after you reach full retirement age and avoid the earnings test, working in retirement can increase the taxes you pay on your Social Security benefits.
Up to 85% of your Social Security benefits can be taxable, depending on your "combined income", which includes your adjusted gross income, tax-exempt interest, and half of your Social Security benefits.
The Thresholds
For married couples filing jointly, if your combined income exceeds $32,000, up to 50% of your benefits may be taxable. Above $44,000, up to 85% becomes taxable.
For single filers, those thresholds drop to $25,000 and $34,000.
When you add work income to the mix, you can quickly push yourself over these thresholds, causing more of your Social Security to become taxable. This creates an effective marginal rate that's higher than your stated tax bracket would suggest.
Tax Bracket Considerations
Work income gets added directly to your adjusted gross income, which can push you into higher tax brackets faster than you might expect.
Consider a married couple with $50,000 in retirement account withdrawals and Social Security benefits. They're comfortably in the 12% federal tax bracket. But if one spouse takes a $30,000 part-time job, that additional income doesn't just face 12% taxation. It:
- Pushes some of that income into the 22% bracket
- Causes more Social Security benefits to become taxable
- May increase Medicare premiums (more on that shortly)
- Could trigger state income taxes if they vary by income level
The effective marginal tax rate on that $30,000 can easily exceed 30% once all these factors combine.
Medicare Premium Surcharges (IRMAA)
Here's where working in retirement gets particularly expensive for higher earners: Income-Related Monthly Adjustment Amounts (IRMAA) for Medicare.
Medicare Part B and Part D premiums increase for individuals with modified adjusted gross income above certain thresholds. For 2026, these surcharges begin at $109,000 for single filers and $218,000 for married couples filing jointly.
The IRMAA Lookback
Medicare determines your IRMAA based on your tax return from two years ago. So your 2026 Medicare premiums are based on your 2024 income. This creates a lag that can catch retirees off guard.
If you return to work and your income crosses these thresholds, you won't see the premium increase immediately; but it's coming two years later. And if you stop working, you'll continue paying elevated premiums for two years after your income drops.
The premium increases aren't trivial. At the highest income levels, monthly Medicare Part B premiums can reach $689.90 per person (compared to the standard $202.90), and Part D surcharges add another $91.00 per month.
Self-Employment Tax Complications
If your retirement work involves consulting, freelancing, or any form of self-employment, you face additional tax complexity: self-employment tax.
As an employee, your employer pays half of Social Security and Medicare taxes (7.65%). But when you're self-employed, you pay both halves—a 15.3% self-employment tax on earnings up to the Social Security wage base ($184,500 for 2026), plus 2.9% Medicare tax on all earnings above that.
You can deduct half of your self-employment tax from your income, but the effective rate remains substantial, especially when layered on top of income taxes and the other factors we've discussed.
Required Minimum Distribution Impact
Once you reach age 73, required minimum distributions from traditional IRAs and 401(k)s force you to take withdrawals whether you need the money or not. If you're also working, these RMDs simply add to your taxable income.
There's one exception: if you're still working for an employer and participating in their 401(k), you can delay RMDs from that specific 401(k) until you retire (as long as you don't own more than 5% of the company). But this exception doesn't apply to IRAs or old 401(k)s from previous employers.
Strategies to Manage the Tax Burden
Adjust Your Withholding
If you're working as an employee, increase your withholding to account for the additional tax on both your wages and your retirement income. The last thing you want is a surprise tax bill and potential penalties for underpayment.
For self-employment income, make quarterly estimated tax payments to avoid penalties.
Strategic Roth Conversions
If you're working and don't need your retirement account withdrawals for living expenses, consider reducing traditional IRA distributions (if you're under RMD age) and funding expenses from work income instead. This keeps your overall income lower and may allow for strategic Roth conversions in future low-income years.
Optimize Retirement Account Withdrawals
Coordinate your retirement account withdrawals with your work income to stay below key tax thresholds—particularly the IRMAA limits and the upper edges of tax brackets. Sometimes withdrawing slightly less from retirement accounts makes sense when you have work income filling the gap.
Consider Tax-Efficient Investment Location
If you're saving some of your work income, prioritize tax-advantaged accounts like 401(k)s, IRAs, or HSAs. These contributions reduce your current taxable income, which becomes particularly valuable when you're already facing higher marginal rates.
The Bottom Line
Working in retirement can be financially and personally rewarding. But the tax implications require careful planning. The interaction between work income, Social Security benefits, retirement account distributions, and Medicare premiums creates a complex web where your effective tax rate can be substantially higher than your marginal bracket suggests.
Before accepting that part-time job or launching that consulting business, run detailed projections that account for all these factors. Better yet, work with a financial advisor or tax professional who can model different scenarios and help you understand the true after-tax value of returning to work.
The goal isn't necessarily to avoid working—it's to work with full knowledge of the tax consequences and to structure your finances in ways that minimize unnecessary tax burdens while maximizing your retirement satisfaction and security.
This material is for informational purposes only and should not be construed as tax advice. Tax laws are complex and subject to change. You should consult with a qualified tax advisor regarding your specific situation.
Social Security rules and Medicare premium calculations are subject to change by federal legislation.
Advisors associated with Chesapeake Financial Planners may be either (1) LPL Financial Registered Representatives offering securities through LPL Financial, Member FINRA and SIPC, and investment advisor representatives offering investment advice through Great Valley Advisor Group; or (2) solely investment advisor representatives offering investment advice through Great Valley Advisor Group and not affiliated with LPL Financial. Great Valley Advisor Group, and Chesapeake Financial Planners are separate entities from LPL Financial.
Chesapeake Financial Planners | 2402 Scotlon Ct, Forest Hill, MD 21050 | (410) 652-7868 | www.chesapeakefp.com
© 2026 Chesapeake Financial Planners | Not to be reproduced in whole or in part. All rights reserved.
