Employment Exit Taxes When You Retire

You’ve finally done it. You set the date. You told your boss. You even bought that slightly overpriced bottle of champagne to pop on your last Friday. The finish line is right there.

But before you sprint into your golden years, there’s one last hurdle to clear, and it’s not the retirement party or handing over your keycard. 

It’s the final tax bill on your way out the door.

Most people assume their taxes will drop the moment they stop working. That’s usually true… eventually. But the year you retire is often the most expensive tax year of your life because you have your normal salary for part of the year, plus a bunch of one-time payouts that can stack up quickly.

We call this “employment exit income.” It includes things like your final paycheck, payouts for unused vacation days, severance packages, and stock options that vest when you leave. 

Some of these exit payments, such as your final paycheck, are taxed as normal wages, following standard payroll withholding rules based on your regular income and W-4 allowances. 

But know this: the IRS doesn’t care that you’re retiring. They just see income. And they want their cut. Let’s walk through exactly what hits your bank account when you leave, how it gets taxed, and how to keep the surprise bills to a minimum.

What Counts as Employment Exit Income and Severance Pay

You might think your income stops the day you clock out, but in reality, your former employer might keep sending you checks for months.

• Final Wages: This is just your regular pay for the hours you worked up until your last day, and it’s taxed exactly like the paycheck you’ve been getting for years. 
• Accrued PTO: If you’ve been hoarding vacation days, your company might pay you for them, and it generally comes as a lump sum and adds to your total taxable income for the year.
• Severance Pay: If your retirement was part of a layoff or an early buyout package, you might get a chunk of change to ease the transition.
• Deferred Compensation: This is money you earned in previous years that you agreed to receive later. “Later” usually means retirement. So, just as your salary stops, this old money starts showing up. Pro Tip: Federal and state tax rates depend on one's income level for RSUs and deferred compensation, with federal withholding rates generally at 22% for income up to $1 million, and 37% for income exceeding that amount.
• RSUs and Stock Options: Many executive compensation packages have clauses that trigger vesting upon retirement, meaning you might suddenly own a lot of company stock you didn’t have access to yesterday.

Employer pensions may also become payable at retirement. Their tax treatment can differ from other exit income sources, and they’re often considered alongside 401(k)s and other retirement planning options.

All these pieces stack on top of each other. When all is said and done, you could earn more in your “retirement year” than you did in your very best working years.

How Employment Exit Income Is Taxed

Another fact that could be a tough pill to swallow is that employment exit income is taxed as ordinary income.

The IRS doesn’t have a special “Happy Retirement” tax bracket, so your severance pay, your PTO payout, and your final bonus are all taxed at your marginal tax rate.

This often pushes people into a higher tax bracket for one final year, which can significantly affect your overall tax situation for that year. You might usually be in the 24% bracket, but these exit payments could push you into the 32% or even 35% bracket.

You also have to pay Social Security and Medicare taxes on this money, which are the FICA taxes you see on every paystub.

Social Security tax stops once you hit the wage base limit (which changes annually, but was $184,500 in early 2026). If your regular salary already maxed this out, your exit payments won’t get hit with more Social Security tax.

Medicare tax is different because there is no cap. You pay 1.45% on every dollar of employment exit income. If you earn enough, you’ll also trigger the Additional Medicare Tax of 0.9%.

Why Federal Income Tax Withholding Is Usually Wrong

The biggest headache with exit payments is that companies are terrible at withholding the right amount of tax (LINK - /became-retired/withholding-and-estimated-taxes).

IRS rules for “supplemental wages” (like bonuses and severance) require employers to perform federal income tax withholding. Typically, federal income tax is withheld at a flat rate of 22% for severance pay up to $1 million, and at 37% for amounts exceeding $1 million.

That’s fine if you’re in the 22% tax bracket. But again, if you’re a high earner, or if this payout pushes you into a higher bracket, 22% isn’t enough. You might actually owe 32% or 37% on that money.

Because of this, make sure you run the numbers before tax season arrives. Also, keep in mind that the timing of your severance payments can impact your overall tax situation. Depending on your total income for the year, this could result in a larger tax refund or a tax bill.

How Employment Exit Income Affects Medicare (IRMAA)

You might be thinking about Medicare premiums as a fixed cost. They aren't.

Medicare Part B and Part D premiums are based on your income. The more you make, the more you pay. This is called the Income-Related Monthly Adjustment Amount, or IRMAA.

Medicare looks at your tax return from two years ago to decide what you pay today, so the income you earn in your retirement year (let’s say 2026) will determine your Medicare premiums in 2028.

If your exit package is huge, it could spike your Adjusted Gross Income (AGI), which could then push you into a high IRMAA bracket. You could end up paying hundreds of dollars more per month for Medicare, simply because you had a good send-off from work two years prior.

Luckily, this is a temporary spike. Once that high-income year falls out of the two-year lookback window, your premiums should go back down. But it’s a shock if you aren’t expecting it. You can sometimes appeal this decision by filing a form (SSA-44) to show that your income has gone down because of a "life-changing event" like retirement, but you have to know to ask for it.

How to Pay Taxes on Exit Income

When it comes to paying taxes on your employment exit income, it’s important to know the difference between a W-2 and a 1099. 

Most retirees receive their final pay, severance, and other exit income reported on a W-2 form, just like your normal salary, which means payroll withholding applies. If you’d like, you can ask your employer to withhold extra money from your final checks. You can update your W-4 form before you leave, where there’s a line specifically for “extra withholding.” If you know you’ll be short $10,000, you can ask them to take it out of your severance.

However, if you receive payments as a contractor or consultant after you leave, you'll likely get a 1099 form instead.

For 1099 income or in cases where you anticipate owing more, you can (and sometimes must) make estimated tax payments directly to the IRS throughout the year.

But be careful with timing. The US has a “pay-as-you-go” tax system. You can’t just wait until April 15th to pay a huge tax bill. If you owe more than $1,000 at filing time, the IRS might slap you with an underpayment penalty. Making a quarterly estimated payment solves this.

Similarly, claiming all eligible tax deductions and benefits for the relevant tax year can help reduce your final tax bill. Some deductions or credits may only be available for specific tax years, so always check current tax law when planning your payments.

Retirement Plan Loan Offset

If you have an outstanding loan from your 401(k) or 403(b) when you retire or leave your employer, that loan usually becomes due in full immediately upon separation. If you can't repay the balance right away, the remaining loan amount is treated as a taxable distribution, meaning it gets added to your taxable income for the year. 

This is known as a "loan offset," and it is reported on IRS Form 1099-R. In many cases, you may qualify for an extended rollover period, allowing you until the tax filing deadline (including extensions) to roll over the offset amount into an IRA and avoid the tax hit. Failing to plan for this can trigger an unexpected and potentially large tax bill, especially if you’re under age 59½ and subject to a 10% early withdrawal penalty.

You now have until the tax filing deadline (including extensions) to roll over that amount into an IRA. If you can come up with the cash by then, you can avoid the tax hit. If you have employer stock in your retirement plan, you may also be able to take advantage of net unrealized appreciation rules for potential tax savings.

Not everyone retires from a corporate job. If you were your own boss, your exit looks a bit different.

When you’re self-employed, you pay both the employee and employer distinct portions of Social Security and Medicare taxes. This is the infamous Self-Employment Tax (SE tax), a figure that adds up to 15.3% of your net earnings.

Thankfully, that SE tax stops the moment you stop working. Investment income is not subject to SE tax, and neither are pension payments or distributions from your IRA.

Your final year will likely be a mix. You’ll file a Schedule SE for the part of the year you were working. But going forward, that 15.3% drag on your income disappears.

This is a massive raise for self-employed retirees; a dollar of IRA distribution goes further than a dollar of business profit because the SE tax is gone.

However, you need to be careful with "trailing" income. If clients pay you in 2027 for work you did in 2026, that money is still subject to SE tax. It matters when you earned it, not just when you received it.

Tax Implications of Stock Options and RSUs

Equity compensation is the most complex part of employment exit taxes.

Restricted Stock Units (RSUs) 

These are fairly straightforward, since they usually vest on a schedule. When they vest, they count as ordinary income and the value is added to your W-2. In some cases, for tax purposes, the IRS may treat your vested shares as if an actual sale occurred, even if you haven't sold them yet.

Some companies accelerate vesting when you retire. If you have $100,000 worth of RSUs that were supposed to vest over the next three years, and your plan says they all vest the day you retire, that’s a $100,000 income bomb dropping on your final tax return.

Stock Options

These get trickier. You have the right to buy stock at a certain price. When you leave, you often have a limited window to exercise these options, sometimes as short as 90 days.

If you exercise “Non-Qualified Stock Options” (NSOs), the difference between the grant price and the market price is taxed as ordinary income. Again, this goes on your W-2.

“Incentive Stock Options” (ISOs) have different rules and can trigger the Alternative Minimum Tax (AMT).

The key takeaway here is timing, as you might have control over when you exercise options. Doing it all in your final year of work might not be smart if your income is already high, but waiting until the following January (if your plan allows) could save you thousands in taxes because your base income will be lower.

Common Retirement Exit Mistakes

Ignoring state taxes is one of the most common (yet costly) retirement exit mistakes you can make. If you move to a tax-free state like Florida immediately after retiring, you might think you’re in the clear. 

But many states (like California and New York) will still tax your stock options or deferred comp if you earned that money while living there, and you can bet they’ll chase you across state lines for it.

Here are a few more common errors:

• No withholding on severance: Severance pay is often not subject to automatic withholding for state taxes, which can lead to an unexpectedly high tax bill if you don't plan ahead.
• RSU vesting pushes income into a higher bracket: When restricted stock units (RSUs) vest the same year you retire, your total income can spike, potentially moving you into a higher tax bracket and resulting in a larger tax bill than expected.
• Forgetting to make estimated payments: Without regular paychecks and withholdings after retirement, you may need to make quarterly estimated tax payments to avoid underpayment penalties or surprise bills.
• Outstanding 401(k) loan becoming taxable at separation: Leaving your employer with an unpaid 401(k) loan balance usually turns that balance into taxable income and could also result in early withdrawal penalties.
• Spending the gross amount: For example, if you get a $50,000 check and immediately spend all of it, you might not realize until tax season that $15,000 should have gone to taxes. Always set aside the tax portion immediately.
• Forgetting about the Net Investment Income Tax (NIIT): If your exit income pushes your AGI over $200,000 (single) or $250,000 (married), you’ll owe an extra 3.8% tax on your investment income (including dividends and capital gains(LINK - /became-retired/capital-gains-retirement)) because your high salary triggers a tax on your portfolio.
• Ignoring the Alternative Minimum Tax (AMT): This can assess an additional tax of 26 or 28%, depending on your filing status and income. Income from certain stock options and tax-exempt interest are the focus of this tax, while SALT and certain personal exemptions are disallowed to offset any income.

Legal tax avoidance strategies, such as timing your income or maximizing deductions, can help you minimize your tax bill, but it's important to distinguish legal tax avoidance from illegal tax evasion. If you want to stay compliant while reducing your tax liability, proper planning and professional guidance from a tax expert are key.

Don't Let Leaving Your Job Impact Your Retirement Accounts and Savings

As you move from the world of employment to the world of retirement, you'll face a brand-new landscape of tax obligations, many of which can be tough to understand. Even experienced professionals can be caught off guard by how things like fair market value, retirement income, or the value of all your worldwide assets can affect your average annual tax liability.

Still not sure how to make heads or tails of your ongoing tax obligations? Talk to a qualified tax professional if you still have questions, and do your best to stay up to date on tax rules as they change year to year. Our guide on taxes in retirement may be able to help, too.

Ultimately, these rules are complex and ever-changing, and your federal tax obligations are liable to change significantly, even over the course of just a few years. 

But by planning ahead and taking advantage of all the tax benefits available to you, you can improve your net worth and keep more of your hard-earned money in your pocket throughout your golden years.

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