The jock tax is the common name for the requirement that professional athletes pay income tax in every state (and sometimes city) where they earn income by playing games or performing services. It’s not a special tax with its own code section — it’s just the standard nonresident income tax rules applied to people whose work takes them across state lines constantly. For a CPA for athletes in Los Angeles, the jock tax is one of the most time-intensive parts of every return, because it means preparing and filing nonresident returns in 15 to 25 states depending on the sport and the schedule.

Here’s how it works mechanically. An athlete’s total compensation (salary, bonuses, certain benefits) gets divided by a duty-day ratio. The numerator is the number of duty days spent in a particular state, and the denominator is the total number of duty days in the season. A “duty day” typically includes game days, practice days, team meetings, mandatory training, preseason camp, and sometimes travel days — the exact definition varies by state. For an athlete based in Los Angeles earning $10 million, if they spend 8 out of 200 total duty days in New York, New York claims the right to tax $400,000 of that income (8/200 x $10 million). A CPA for athletes in Los Angeles tracks every single duty day and maps it to the correct jurisdiction.

California’s approach is particularly aggressive. The Franchise Tax Board uses a broad definition of duty days that includes preseason, regular season, and postseason activities. They also count days spent in California for voluntary workouts at team facilities (the “voluntary” label doesn’t matter to the FTB if the team expects you to be there). For athletes who live in Los Angeles, California claims taxing rights on the home-state portion of income plus credits for taxes paid to other states on the away-state portion. Since California’s 13.3% rate is the highest in the country, the credits from lower-tax states (Arizona at 2.5%, Texas and Florida at 0%) don’t fully offset, and the athlete winds up paying California’s rate on effectively all of their income. A CPA for athletes in Los Angeles calculates these credits state by state to make sure every dollar of out-of-state tax reduces the California liability.

Some states have reciprocity agreements that eliminate the jock tax for athletes from partner states — but California doesn’t participate in any of them. Some states have de minimis thresholds: if you spend fewer than a certain number of days or earn below a certain amount, you don’t have to file. But these thresholds are low (often $600 or a single day), and most professional athletes exceed them in every state they visit. A CPA for athletes in Los Angeles checks each state’s specific rules rather than applying a one-size-fits-all approach, because the filing requirements and calculation methods genuinely differ.

Cities add another layer. New York City, Philadelphia, Detroit, Cleveland, Kansas City, Cincinnati, and a few others impose their own local income taxes on nonresident athletes. An NBA player on the Lakers who plays the Knicks at Madison Square Garden owes tax to New York State and New York City. A CPA for athletes in Los Angeles includes these local filings in the total return package, which can mean 25 to 30 total returns for a single athlete in a single year.

Signing bonuses present a sourcing question. Most states source signing bonuses to the state where the athlete plays — meaning they get allocated across all duty-day states the same way salary does. But a few states source signing bonuses to the state where the contract was signed, which can produce a different result. A CPA for athletes in Los Angeles determines the correct treatment in each state and makes sure the signing bonus isn’t being taxed twice.

The practical impact on a Los Angeles-based athlete’s effective tax rate is significant. An athlete earning $8 million in salary who lives in LA and plays in the NFL (with games in roughly 12 states) will have a combined federal and state effective rate approaching 50%. The multi-state filing fees add up too — each nonresident state return adds to the CPA’s preparation costs. A CPA for athletes in Los Angeles organizes the duty-day tracking, prepares all the state returns, manages the credit calculations, and handles any notices or audits from states that disagree with the allocation. It’s detailed, tedious work, but it’s the difference between paying what you owe and overpaying because nobody bothered to do the math correctly.

Endorsement income is one of the most significant — and most complicated — pieces of a professional athlete’s tax picture. For athletes in Los Angeles, endorsement deals can range from a few thousand dollars for a local car dealership appearance to eight-figure national campaigns with shoe companies, sports drinks, or financial services firms. Each deal generates income that has to be properly sourced, reported, and deducted against. A CPA for athletes in Los Angeles reviews every endorsement contract and structures the reporting to get it right.

The sourcing question is the first thing to sort out. Generally, endorsement income that isn’t tied to a specific performance location is sourced to the athlete’s state of residence. For an athlete living in Los Angeles, that means California taxes the entire amount at up to 13.3%. If the endorsement contract requires the athlete to appear at a specific event in another state — a commercial shoot in New York, a product launch in Miami — the income associated with that appearance may be sourced to the state where the work was performed. A CPA for athletes in Los Angeles breaks down endorsement contracts by activity and location to determine how much income is sourced to California versus other states.

The distinction between “personal services” endorsement income and “image rights” or “likeness rights” income matters. If you’re being paid to show up and do something — film a commercial, attend an event, record a voiceover — that’s personal services income, and it’s sourced to where the services are performed. If you’re being paid for the use of your name, image, and likeness (NIL) without requiring you to perform any specific services, some states treat that as royalty income sourced to the payer’s state or the athlete’s residence. California tends to source NIL income to the athlete’s residence, which means full California taxation. A CPA for athletes in Los Angeles structures contracts with this distinction in mind and advises on whether separating the personal services component from the NIL component would produce a better tax result.

Agent commissions on endorsement deals are deductible. Most agents take 10–20% of endorsement income (compared to 3–5% of playing salary, which is capped by league collective bargaining agreements). For an athlete in Los Angeles earning $3 million in endorsements and paying a 15% agent commission, that’s a $450,000 deduction. But the deduction needs to be allocated correctly. The agent fee on endorsement income reduces the endorsement income line item — it doesn’t reduce playing salary or get lumped into a general “miscellaneous deductions” category. A CPA for athletes in Los Angeles separates the deductions by income stream so the tax calculations for each stream are accurate.

Manager fees work similarly. Many athletes in Los Angeles employ business managers who handle their finances, negotiate contracts, pay bills, and manage investments. The business manager’s fee (typically 5% of total income) is a deductible business expense, but it has to be allocated between playing income, endorsement income, and investment income. The portion allocated to investment income may be subject to different deduction limitations. A CPA for athletes in Los Angeles makes these allocations based on the time the manager spends on each income stream and the contractual terms of the management agreement.

Athletes who form loan-out companies (typically S-corps or LLCs) to receive endorsement income face additional considerations. The loan-out company signs the endorsement contract, receives the payment, and then pays the athlete a salary. This structure can create California tax savings if the loan-out company is properly set up and the income flows through correctly — but it also triggers additional compliance requirements (corporate returns, payroll, franchise tax). A CPA for athletes in Los Angeles advises on whether a loan-out structure makes sense for your specific endorsement portfolio and manages the entity-level filings.

Equity deals and product royalties are increasingly common. An athlete in Los Angeles who takes an equity stake in a startup instead of (or in addition to) a cash endorsement fee has a different tax profile. The equity might be taxed at grant (if it has a readily ascertainable value), at vesting, or at sale. Royalty payments based on product sales generate ongoing income that’s typically sourced to the athlete’s residence. A CPA for athletes in Los Angeles tracks these different arrangements and reports each one according to its specific tax rules.

International endorsement income adds another layer. If an athlete in Los Angeles has endorsement deals that involve appearances or marketing in other countries, foreign tax credits come into play. The income is taxable in the U.S. and in California, but taxes paid to a foreign country generate a credit against the federal liability. California also allows a credit for foreign taxes, with its own calculation method. A CPA for athletes in Los Angeles handles the foreign tax credit computation and files the necessary forms (Form 1116 federally, Schedule S for California).

Duty-day allocation is the mechanism that determines how much of a professional athlete’s income each state gets to tax. The concept is straightforward — you divide your time across states, and each state taxes the portion of income that corresponds to the time you spent there. But the actual calculation is full of judgment calls, state-by-state variations, and gray areas that a CPA for athletes in Los Angeles has to sort through for every return.

The basic formula: State-taxable income = (Duty days in state / Total duty days) x Total compensation. “Total compensation” typically includes base salary, signing bonuses (in most states), roster bonuses, reporting bonuses, and workout bonuses. It generally does not include investment income, endorsement income (which is sourced separately), or certain deferred compensation. A CPA for athletes in Los Angeles starts by identifying what goes into the numerator and denominator for each state’s version of the formula, because they’re not all the same.

What counts as a “duty day” is where it gets complicated. Most states count any day where the athlete is required to perform services for the team — games, practices, team meetings, training camp, film sessions, travel days where the team requires travel, and preseason activities. Some states count the day before a game if the team requires the athlete to travel and stay overnight. Some states don’t count travel days at all. A few states count the entire offseason if the athlete’s contract requires year-round availability (which most modern contracts do). A CPA for athletes in Los Angeles applies each state’s specific definition rather than using a single methodology, because the wrong count in one state can result in either overpayment or underpayment.

For athletes in Los Angeles who play in the NFL, a typical season includes about 200 total duty days: roughly 20 days of offseason workouts, 30 days of training camp, 5 preseason game days plus travel, 17 regular-season game days plus travel, practice days throughout the 18-week regular season, and potentially 1–4 postseason games. Each of those days gets assigned to a state. A CPA for athletes in Los Angeles works with the team’s schedule, the player’s personal travel records, and sometimes GPS or hotel records to document exactly where each day was spent.

NBA players have more duty days in more states because the regular season is 82 games played across roughly 24 different cities. An LA-based player (Lakers or Clippers) might have duty days in 20+ states over the course of a season. The denominator — total duty days — also includes preseason camp, preseason games, all-star weekend (if applicable), and postseason. A CPA for athletes in Los Angeles maps each game to its city and state, then adds practice and meeting days at the home facility in LA.

MLB presents its own complications because of the 162-game schedule played over six months, plus spring training. An athlete on the Dodgers or Angels has duty days in Arizona (spring training), California (home games), and every state where the team plays road series. The volume of returns is high — often 20+ state filings. A CPA for athletes in Los Angeles tracks the schedule game-by-game and state-by-state, accounting for days off, injured list time (which is usually allocated to the player’s team state), and special appearances like the All-Star Game.

California’s FTB is known for auditing athletes’ duty-day calculations. They verify the total duty-day count against the team’s published schedule and publicly available information. If an athlete claims 180 total duty days but the FTB calculates 210, the California allocation changes — and typically in the FTB’s favor, since a smaller denominator means more income allocated to California. A CPA for athletes in Los Angeles documents the duty-day methodology thoroughly, keeps supporting records (team schedules, travel itineraries, medical records for injured periods), and prepares the return with audit defense in mind.

The credit mechanism is what prevents double taxation — in theory. California allows a credit for taxes paid to other states on income that’s also subject to California tax. But the credit is limited to the lesser of the tax actually paid to the other state or the California tax attributable to that income. For states with lower rates than California (which is most of them), the credit equals the tax paid to the other state, and the athlete pays the difference to California. For states with no income tax (Texas, Florida, Tennessee, Washington, Nevada), there’s no credit to claim, and California taxes the full California-allocated portion of income at its rate — while the duty days spent in those states reduce the income allocated to California. A CPA for athletes in Los Angeles optimizes this credit calculation to minimize the overall multi-state tax burden.

One underappreciated factor: the order in which credits are claimed matters. If an athlete has income allocated to 20 states and credits from 18 of them, the way those credits offset the California liability can be affected by stacking rules. A CPA for athletes in Los Angeles applies the credits in the sequence that produces the best result under California law, which isn’t always intuitive.

Professional athletes in Los Angeles typically pay a team of advisors: a sports agent, a business manager, a financial advisor, a marketing agent, an attorney, and sometimes a personal trainer or performance coach. Each of these relationships generates fees that are potentially deductible — but the rules around deductibility depend on the type of income the fee relates to, how the athlete structures their business, and whether the expense is classified as a business expense or a personal expense. A CPA for athletes in Los Angeles sorts through each fee arrangement to make sure every legitimate deduction is claimed and properly allocated.

Sports agent commissions are the most straightforward. Agents certified by the players’ association (NFLPA, NBPA, MLBPA, NHLPA, MLS Players Association) negotiate the athlete’s playing contract and are typically paid 3–4% of the contract value (the percentage is capped by most league CBAs). This fee is a direct cost of earning playing income and is deductible as a business expense on Schedule C or through the athlete’s loan-out company. For a CPA for athletes in Los Angeles, the important detail is allocation: the agent fee reduces the playing income that’s then allocated across states via the duty-day formula. If the fee is deducted before the multi-state allocation, it reduces taxable income in every state proportionally. If it’s deducted after, it might only reduce income in the athlete’s home state. A CPA for athletes in Los Angeles typically treats it as a reduction to total compensation before allocation, which is how most states expect it to be handled.

Marketing agent fees are separate from sports agent fees. Many athletes in Los Angeles have a separate marketing agent (or the marketing division of their sports agency) who handles endorsement deals, appearance fees, and brand partnerships. The fee is typically 10–20% of the endorsement income generated. This fee is deductible against the endorsement income stream — not against playing salary. The sourcing of the deduction follows the sourcing of the endorsement income itself. For endorsements sourced to California (most of them, for an LA-based athlete), the deduction reduces California-taxable endorsement income. A CPA for athletes in Los Angeles separates marketing fees from playing-contract agent fees in the books and on the return.

Business manager fees cover a broad range of services: bill payment, investment oversight, cash flow management, tax coordination, insurance review, real estate management, and general financial administration. Business managers typically charge 5% of the athlete’s total income — playing salary, endorsements, investment income, everything. A CPA for athletes in Los Angeles allocates this fee across all income streams based on a reasonable method, because the portion allocated to investment income is treated differently than the portion allocated to business income. Investment-related expenses for individuals are no longer deductible under the Tax Cuts and Jobs Act (which suspended the miscellaneous itemized deduction through 2025). So the portion of the business manager’s fee that relates to investment management is currently non-deductible for individual taxpayers. A CPA for athletes in Los Angeles makes this allocation and documents it, so the deductible portion is maximized without crossing any lines.

Attorney fees depend on what the attorney is doing. Legal fees related to contract negotiation are a business expense, deductible against the income from that contract. Legal fees for personal matters (prenuptial agreements, family law, personal injury) are generally not deductible. Legal fees for tax advice and tax controversy are deductible as a business expense for a self-employed athlete. A CPA for athletes in Los Angeles reviews attorney invoices to determine which fees are deductible and where they should be allocated.

Trainer and performance coach fees are a gray area. If the athlete’s team provides training and the athlete hires a personal trainer in addition to team-provided training, the personal trainer’s fee is deductible if it’s an ordinary and necessary business expense — meaning it’s directly related to maintaining the athlete’s ability to perform their job. Most CPAs for athletes in Los Angeles consider this deductible for active professional athletes, since physical conditioning is literally a job requirement. The IRS hasn’t issued clear guidance specific to athlete training costs, but the general business expense rules support the deduction when there’s a clear connection to earning income. Nutritionists and dietitians fall into the same category — deductible if the athlete can show the expense is for maintaining performance, not for general personal health.

Financial advisor fees are treated the same as the investment-related portion of business manager fees: currently non-deductible for individuals under the TCJA suspension. If the athlete operates through a loan-out company (an S-corp), and the loan-out company pays the financial advisor, the deductibility depends on whether the services benefit the corporation or the individual. A CPA for athletes in Los Angeles structures these payments carefully — if the financial advisor is managing the loan-out company’s investments (not the individual’s personal investments), the expense is more defensibly deductible at the entity level.

One more note on loan-out companies: athletes in Los Angeles who receive endorsement income through a loan-out entity can deduct all of these fees at the entity level (agent, manager, attorney, trainer) as ordinary business expenses of the entity. This avoids the individual-level deduction limitations and creates a cleaner deduction. A CPA for athletes in Los Angeles evaluates whether the loan-out structure produces a net tax benefit after accounting for the entity-level compliance costs (corporate return, payroll, franchise tax, reasonable salary requirement).

The biggest tax planning mistake athletes in Los Angeles make is treating each year as isolated — filing the return, paying the bill, moving on. The reality is that a professional athlete’s tax life has a distinct arc: the pre-career phase (college, minor leagues, draft), the active playing career (2–15 years of peak earnings), and the post-career phase (which lasts the rest of their life). A CPA for athletes in Los Angeles plans across all three phases, with the active years being the most critical because that’s when the income is highest and the savings opportunities are biggest.

During the playing career, retirement contributions should be maximized. The team’s 401(k) plan allows up to $23,500 per year (2025 limit) in employee deferrals, plus any employer match. That alone isn’t enough to build a retirement cushion that replaces a multi-million-dollar salary. Athletes in Los Angeles who have endorsement or other business income can supplement the team plan with a SEP IRA or Solo 401(k) through a separate entity. If the athlete earns $2 million in endorsement income through an S-corp loan-out, the employer contribution to a SEP IRA can be up to 25% of W-2 compensation from that entity. For high earners, a defined benefit plan through the loan-out company can shelter even more — sometimes $200,000+ per year. A CPA for athletes in Los Angeles coordinates these contributions across multiple plans and entities to stay within the aggregate limits while sheltering as much income as possible from California’s 13.3% rate.

Deferred compensation arrangements offered by teams (signing bonuses spread over multiple years, for example) need to be structured carefully under Section 409A to avoid immediate taxation and penalties. Some athletes in Los Angeles negotiate to receive a portion of their compensation after their playing career ends, when they expect to be in a lower tax bracket. This works well if the athlete actually moves to a lower-tax state after retiring — but California will tax the deferred compensation as California-source income if the services that generated it were performed in California. A CPA for athletes in Los Angeles models the tax impact of deferral versus immediate receipt, accounting for the time value of money, expected future tax rates, and the California sourcing rules.

Real estate investing during the playing career is common among athletes in Los Angeles, partly because they know the LA market and partly because real estate provides tangible assets and cash flow. The tax benefits are real: depreciation deductions offset rental income, 1031 exchanges defer capital gains, and real estate professional status (if the athlete qualifies, which is rare during active playing years but possible in the offseason for some athletes) can allow real estate losses to offset playing income. A CPA for athletes in Los Angeles tracks real estate investments, calculates depreciation schedules, manages 1031 exchanges, and evaluates whether the real estate portfolio is structured to produce the best after-tax outcome.

Charitable giving during peak earning years is another planning lever. An athlete in Los Angeles earning $10 million who donates $1 million to charity saves roughly $5 million in tax over a career (depending on the type of donation and the applicable rates). Donating appreciated stock (or other appreciated property) instead of cash is almost always better, because the capital gains tax is avoided entirely while the full fair market value is deductible. Establishing a donor-advised fund during a high-income year lets the athlete take the deduction now and distribute the funds to charities over time. A CPA for athletes in Los Angeles coordinates charitable planning with the athlete’s foundation (if they have one) and with community relations staff who often manage the athlete’s philanthropic activities.

The transition out of playing is where a lot of athletes get into trouble. Income drops dramatically — from millions to potentially zero, or to a much lower amount from broadcasting, coaching, or business ventures. The tax bracket changes are massive. An athlete who was paying 50%+ in combined federal and California taxes might drop to an effective rate of 20–25% in the first year of retirement. This creates opportunities: Roth IRA conversions become attractive in low-income years (convert traditional IRA funds to Roth while the tax cost is low). Exercising stock options or recognizing deferred income in low-bracket years saves significant tax. Selling appreciated assets that were held during the playing career produces gains taxed at lower rates. A CPA for athletes in Los Angeles plans the transition years in advance, mapping out which income recognition events should happen in which year to smooth the tax burden.

Residency changes after retirement are common. Many athletes who played in Los Angeles move to no-income-tax states once their career ends. The planning considerations are the same as for any high-net-worth individual leaving California: establish clear domicile in the new state, sever California ties methodically, and document everything. The FTB audits former athletes frequently, especially in the first few years after a claimed residency change. A CPA for athletes in Los Angeles helps plan the move, sets up the documentation, and prepares the final California resident return and the first nonresident return to withstand FTB scrutiny.

Post-career business ventures need their own tax structure. An athlete who opens a restaurant, launches a clothing line, or invests in a franchise needs entity selection, bookkeeping, payroll, and business tax returns. The skill set required is different from playing-career tax work, but the relationship continuity matters. A CPA for athletes in Los Angeles who handled the playing years already understands the client’s financial picture, their risk tolerance, their existing investments, and their long-term goals — which makes the transition to business-owner tax planning much smoother than starting from scratch with a new firm.