His AI Stock Options Could Make Him Rich Without Adding $1 to His Social Security Check
A multimillion-dollar equity payout sounds like a guaranteed path to a fatter Social Security check, but the type of stock grant, the exercise date, and an overlooked wage ceiling can quietly erase nearly every dollar of that expected boost.
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AI funding has hit record levels in 2026. Some of the people getting rich from it are engineers in their late 50s who happened to join the right company at the right time. Picture Mark, 59, a machine learning engineer at a well-funded AI startup. His salary is solid, but the real money could come from stock options worth millions if the company is sold or eventually goes public. He assumes that kind of payday would also mean a bigger Social Security check.
It’s easy to see why he’d think so. Social Security pays more to people who earned more, so a huge payday seems like it should raise his benefit. Whether it actually does comes down to two things: what kind of equity he holds, and how much of it Social Security counts as wages.
Why Stock Options Aren’t All Treated Like Salary
Incentive stock options get special tax treatment. When Mark exercises them, his employer withholds no Social Security or Medicare tax and reports none. Even if he sells early, in what the IRS calls a disqualifying disposition, that income still isn’t counted as wages for payroll tax. Social Security only credits earnings that were taxed for the program, so profits from these options never show up on his earnings record.
Nonqualified options work differently. The gap between his exercise price and the stock’s market value is reported on his W-2 as ordinary income. Restricted stock units, which are shares he receives once they vest, count as wages for both income tax and payroll tax. Money from both of these can reach his Social Security record.
Incentive options come with a tax catch of their own. If he exercises and holds the shares, he can trigger the alternative minimum tax, a second tax calculation that picks up certain income the regular system misses. He could owe a large bill on paper gains before he has sold a single share.
Windfalls Versus Covered Earnings: Where the Line Falls
Social Security’s earnings record only tracks covered pay, meaning wages that were taxed for the program, so net worth, stock price gains and capital gains aren’t considered. If his shares triple in value after he exercises, that increase is investment income, and Social Security ignores it.
Even equity income that does count runs into a ceiling. In 2026, Social Security taxes and credits wages only up to $184,500. Say Mark’s salary is $190,000. A $2 million stock vest would add nothing to his future benefit, because every dollar of it is above the cap.
His benefit is based on his 35 highest-earning years, adjusted for inflation. One huge year can, at most, replace one lower year in that average, and only up to the cap, so for an engineer who has earned near the cap for most of his career, the boost is close to nothing.
His stock-market wealth doesn’t determine his annual Social Security raises. Those come from cost-of-living adjustments (COLAs), which are based on inflation. The 2027 increase is currently projected at about 3.5%.
Where His Option Money Does Hit His Social Security
Equity income matters most when it comes time to pay tax on his benefits, since combined income is his adjusted gross income plus tax-free interest plus half his benefits. For single filers, once combined income tops $34,000, up to 85% of benefits can be taxed.
If Mark sells option shares in the same years he receives benefits, the gains push his combined income far past that line. Selling shares before he starts collecting could keep those gains out of the years when his Social Security benefits are taxable. But the timing needs to make sense for his overall tax bill, not just his benefits. IRS Publication 915 can help him calculate the taxable share.
Check Two Documents Before Counting on a Bigger Check
First, pull out the grant agreement and find out whether he holds incentive options, nonqualified options or restricted stock units. That answer helps determine whether any of this money can count toward Social Security. Next, compare his W-2’s Social Security wages box with the earnings history in his my Social Security account. Errors are easiest to fix while the records are recent.
The mistake hardest to undo is planning retirement around a benefit increase that never comes. Mark’s biggest Social Security decision is still when he claims, because each year of waiting raises his check for life. The option money can pay for a comfortable retirement on its own terms. Treat it as a separate source of money that sits alongside Social Security.
Equity plans vary a lot, and something as small as the exercise date or the type of grant can change the outcome. A short session with a tax professional who knows stock compensation is worth it before any large exercise or sale.
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Gerelyn Terzo is the author of dividend investing handbook "Dividend Investing Strategies: How to Have Your Cake & Eat It Too." A veteran financial journalist, she covers agri-finance for outlets like Global AgInvesting and the broader stock market and personal finance for 24/7 Wall Street. She began at CNBC and later helped launch Fox Business in New York. Gerelyn currently resides in Woodland Park, Colorado and dabbles in nature photography as a hobby.
