What to Do With a Signing Bonus: A Pro Athlete’s Guide to Taxes, Liquidity, and Building Wealth
- Erik James Roberts, Founder & Chief Investment Officer | Infinitus Wealth Management
- 6 hours ago
- 7 min read
For most pro athletes, the signing bonus is the single largest check they have ever seen — and what you do with a signing bonus in the first ninety days can shape the next fifty years. The hard truth behind the celebration is the math of a sporting career: most last somewhere between three and fifteen years, which means this windfall has to outlast the very career that produced it. Handled well, a signing bonus is not a prize to spend; it is seed capital to build lasting wealth. This guide walks through exactly what to do with a signing bonus, in order: understand the tax, reserve for it, build liquidity for a short career, and put the rest to work compounding for decades.
At Infinitus, our approach is investment-first and growth-focused. We don’t just manage wealth; we build it. So we’ll spend less time on what to cut back and more on how to turn one large check into a portfolio that keeps working long after the cleats are hung up — while being clear-eyed about the taxes that come first.
First, Know How Your Signing Bonus Is Really Taxed
The IRS treats a signing bonus as “supplemental wages.” Under a 2004 ruling, athlete signing bonuses are reported on a W-2 and subject to federal income, Social Security, and Medicare withholding. The number that trips people up is the withholding rate: employers withhold a flat 22% on supplemental wages up to $1 million, and 37% on any amount above that. Those rates were made permanent under 2025’s tax law and still apply in 2026.
Here is the trap. That 22% is only withholding — not your actual tax. A top-earning athlete sits in the 37% federal bracket, so on a large bonus stacked on top of salary, far more is owed than the 22% the team set aside. The difference doesn’t disappear; it shows up as a balance due when you file. On a $1,000,000 signing bonus, the gap between what’s withheld and what’s likely owed can be six figures.
On top of federal tax, Social Security applies at 6.2% up to the annual wage base and Medicare at 1.45% (plus an extra 0.9% on high earnings). What you won’t pay, if you’re a Tennessee resident, is state income tax — and for an athlete, that detail is worth far more than it sounds.
The Jock Tax — and the Signing-Bonus Advantage Most Athletes Miss
Roughly 41 states levy a “jock tax” on visiting athletes, allocating your salary across every state you play in using a duty-day formula, while your home state taxes everything. It’s why a single NFL player can file a dozen or more state returns in a year. But signing bonuses get special treatment — and that’s where real planning happens before you ever decide what to do with a signing bonus after it lands.
Most states follow a three-part test. If a signing bonus is (1) not contingent on making the team or playing any games, (2) paid separately from salary, and (3) nonrefundable, then it is taxed only in your state of residence — no other state gets a slice. The logic is that the bonus pays you for signing, not for performing in any particular arena.
The Nashville edge: Tennessee has no state income tax on wages (the Hall tax on interest and dividends was fully repealed in 2021, and a 2014 constitutional amendment bars an earned-income tax). For an athlete who is a Tennessee resident when signing, a qualifying signing bonus can face $0 in state income tax — while a California resident could lose more than 13% of the same bonus to the state.
Two honest caveats. Structure controls everything: in some leagues, signing bonuses are refundable if a player retires or holds out, which ties them to services and pushes them back into duty-day allocation. And residency has to be real — driver’s license, voter registration, days physically present, where your family lives — not just a mailing address. Coordinate with a CPA or tax attorney before you sign, because once the ink is dry, the structure is locked.
What to Do With a Signing Bonus First: Reserve for the Real Tax Bill
The first move with any windfall is defensive. Before a dollar is spent, celebrated, or invested, reserve the gap between what was withheld and what you’ll actually owe — potentially the difference between that 22% and a 37% top rate. Park it somewhere safe and liquid (a high-yield savings account, money market fund, or short-term Treasuries), not in the market. This is the IRS’s money; it just hasn’t been collected yet.
Because withholding under-covers a big bonus, you may also owe quarterly estimated payments to avoid an underpayment penalty. A good tax advisor will map this to a safe-harbor number so April is a non-event. Only once the tax reserve is fully funded does the rest of the plan begin.
Build Liquidity for a Career That Won’t Last Forever
Ordinary advice says keep three to six months of expenses in cash. For an athlete, that’s not enough. Income is front-loaded and uncertain, careers can end with a single injury, and there is no severance package waiting. A larger cushion — often one to two years of living expenses — turns a short, volatile earning window into something you can actually plan around.
Two companion moves: clear high-interest debt (paying off an 18% credit card is a guaranteed 18% return), and resist the lifestyle inflation that quietly consumes most windfalls. The bonus is not your annual salary, and the pressure from family, friends, and an expanding entourage is real. Treating the check as a one-time foundation, not recurring income, is what separates athletes who stay wealthy from those who don’t.
What to Do With a Signing Bonus Once You’re Stable: Invest for Growth
This is where the windfall earns its keep. With taxes reserved and liquidity in place, the remaining capital has one job: to grow. The compressed earning window of a pro career actually makes early, disciplined investing more powerful, not less — money put to work in your twenties has decades to compound into wealth that long outlasts your playing days.
Start with tax-advantaged accounts, and front-load them while your income is high. If you earn self-employment income from NIL, endorsements, or appearances, a Solo 401(k) or SEP-IRA can absorb up to $72,000 in 2026. Roth strategies are especially valuable in lower-income years after your career, and high earners can still fund a Roth through the backdoor.
Beyond the tax-advantaged accounts, the rest belongs in a taxable portfolio built to grow. This is the heart of how we work at Infinitus: custom portfolios of individual stocks and bonds — not pooled funds layered with extra fees — actively managed for capital appreciation. For athletes, options-based hedging (protective puts, covered calls, and collars) is particularly useful, because it lets you manage concentration and downside — say, when part of your compensation or an endorsement comes as equity — while staying invested for growth.
One common question is whether to invest a large bonus all at once or average in over time. Both are defensible: deploying sooner puts more capital to work in a market that rises over the long run, while averaging in softens the regret of a bad entry. A collar can thread the needle — getting capital invested now while capping near-term downside. None of this is a prediction of returns; it’s a framework for putting a windfall to work on terms that favor compounding.
The Bottom Line: Make the Bonus Outlast the Career
Deciding what to do with a signing bonus comes down to a sequence the best-advised athletes follow every time: understand the tax, reserve for it, build a cushion big enough for a short career, then invest the remainder for long-term growth. The players who stay wealthy are rarely the ones who earned the most — they’re the ones who treated the first big check as the foundation of a portfolio rather than the prize at the end of a long climb.
That is the work we do at Infinitus Wealth Management: custom portfolios of individual stocks and bonds, active management, options-based hedging, and a fee-only fiduciary structure — built for athletes, entertainers, and anyone turning a concentrated, short-window income into lasting wealth. We don’t just manage wealth. We build it. If you’ve signed a contract, or are about to, we’d welcome a conversation — every relationship begins with a complimentary financial plan.
Talk to Infinitus About Building Your Custom Portfolio
At Infinitus Wealth Management, we build every client a custom portfolio from individual stocks and individual bonds—never mutual funds, rarely an ETF—actively managed and hedged with options where it strengthens the portfolio. We are an independent, fee-only fiduciary: no commissions, no proprietary products, no conflicts pulling against you. Our twelve proprietary strategies give us the range to tailor a portfolio to your tax situation, income needs, and goals, whether you are early in building serious wealth or managing well into eight figures.
If you would like a clear-eyed look at how your current portfolio is actually structured—what it is costing you in fees and tax drag, whether it is being managed at the level of individual holdings, and whether your advisor’s incentives are genuinely aligned with yours—we welcome the conversation. Our complimentary portfolio analysis gives you an objective, holding-level assessment and a direct view of what a custom Infinitus portfolio would look like for you.
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Important Disclosures
Infinitus Wealth Management is a registered investment advisory firm. This article is provided for educational and informational purposes only and does not constitute investment, tax, legal, or accounting advice. It is not an offer or solicitation to buy or sell any security or to enter into any advisory relationship. Any references to specific strategies, withdrawal rates, tax provisions, or historical figures are general in nature and may not be appropriate for any individual investor.
Past performance is not indicative of future results. All investing involves risk, including the possible loss of principal. Tax laws are complex, change frequently, and have unique application to individual circumstances; please consult a qualified tax professional regarding your specific situation. Social Security rules, Medicare rules, and retirement account regulations are subject to legislative and regulatory change.
The information in this article was believed to be accurate at the time of writing but is not guaranteed. Readers should consult with their own qualified advisors before making any financial decisions specific to their situation.
