For founders and early employees, equity compensation is often their largest and most complex personal asset. As company value scales and a liquidity event approaches, the planning window narrows. Decisions made before a liquidity event is underway dictate the ultimate after-tax outcome. Below, the key planning decisions are addressed, including choosing the right equity compensation vehicle and timing of exercise of such options, managing qualified small business stock (QSBS), Sec. 83(b) elections, and state tax exposure.

Choosing the Right Equity Award at Each Company Stage

The type of equity award drives the tax result for the holder. A nonqualified stock option (NSO) generates ordinary compensation income at exercise equal to the spread (defined as the difference between the FMV of the stock at exercise and the predetermined purchase, or “strike” price), while any subsequent change in value is treated as capital. An incentive stock option (ISO) generates no regular income tax at exercise; instead, favorable treatment depends on satisfying statutory holding periods.

The right equity award changes as the company grows. At formation or while value is nominal, restricted stock can deliver actual shares for modest cost and limited current income, subject to vesting and a timely Sec. 83(b) election. As value rises, options defer the purchase decision but shift exercise cost and tax risk to the holder. Later-stage companies may favor restricted stock units (RSUs) because no exercise price is required. One limit to keep in mind: ISOs can be granted only to employees, while NSOs can also go to outside directors and consultants.

Deciding When to Exercise Stock Options

Once options are granted, the key question becomes when to exercise them. The answer depends on how many shares have vested, the spread between the exercise price and current fair market value (FMV), how much cash is available, and whether financing or a same-day sale will be needed. Exercising early (assuming this is allowed by the stock option plan) starts the clock on the long-term capital gain and QSBS holding periods. Waiting to exercise keeps cash in hand, but if stock values keep rising, so does the taxable gain.

For ISO holders, exercise timing also affects the alternative minimum tax (AMT), because the exercise creates an AMT preference item. However, if the shares are sold in a disqualifying disposition in the same calendar year as exercise, the AMT preference does not apply.

For private companies, Sec. 409A valuations are typically used to support the exercise price at grant and to determine the FMV used to measure any taxable spread at exercise. Once the company is public, the challenge shifts to timing sales, because lockups, blackout periods, and securities laws restrict when shares can be sold.

Why QSBS Planning Starts Well Before an Exit

For many founders and early employees, QSBS is the single most valuable planning item available to them. Under Sec. 1202, eligible gain on qualifying stock may be partially or wholly excluded. To qualify for QSBS treatment, the stock generally must be issued by a domestic C corporation meeting the gross-asset test and acquired at original issuance for money, property other than stock, or services.

For stock issued after July 4, 2025, the gross-asset threshold is $75 million (up from $50 million), and the per-issuer cap on excludable gain is the greater of $15 million (up from $10 million) or 10 times the taxpayer’s aggregate adjusted basis in the stock disposed of during the year.

QSBS planning starts well before an exit because the holding period runs from the date the stock is acquired, which for options means the exercise date, not the grant date. For stock acquired on or before July 4, 2025, the full 100% exclusion generally requires holding the stock for more than five years. For stock acquired after July 4, 2025, tiered exclusions apply: 50% after three years, 75% after four years, and 100% after five years. When only a partial exclusion applies, the taxable portion of the unexcluded gain is taxed at 28%, plus the net investment income tax where applicable. The 7% of excluded gain AMT preference still applies to stock issued up to July 4, 2025, but not to stock issued after that date.

If an exit occurs before the holding period is met, a rollover into replacement QSBS may be available under Sec. 1045, provided the original stock was held for more than six months, and replacement QSBS is purchased within 60 days of the sale.

Evaluating the Merits of Making a Section 83(b) Election

For restricted stock or early-exercised shares that remain subject to vesting, a Sec. 83(b) election can be a powerful tool because it generally starts the capital gain and QSBS holding periods at transfer rather than at vesting. Instead of recognizing income as the shares vest, the holder recognizes income at transfer, equal to the shares’ then-current value, minus any amount paid, and generally shifts future appreciation into capital gain on a later sale. The election generally must be filed within 30 days of transfer, with a copy furnished to the employer, and with no IRS extensions available.

The election is not to be made lightly. Tax is paid before liquidity, and if the stock is later forfeited or declines in value, the election generally cannot be undone.

Assessing State Residency Impact on Equity Compensation Taxation

State tax planning often takes a back seat to federal planning, but where one lived and performed services from grant through vesting, exercise, and sale drives which state taxes the income.

California, for example, taxes the compensation portion of equity based on where the work was performed, not where the holder lives today. For NSOs, ISO shares sold in a disqualifying disposition, and RSUs, that income is allocated to California based on the extent services were performed there between grant (or purchase) and exercise (or vesting), typically using a workday allocation. Capital gain on a later sale, by contrast, is taxed based on residency when the stock is sold. A former Californian who has genuinely moved is generally not taxed by California on that gain, even though the embedded compensation remains California-source income. In short, moving before a liquidity event will not necessarily eliminate California tax on equity tied to earlier California service. For cross-border employees, foreign tax, Social Security contributions, and potential double taxation add another layer of complexity, as does determining whether treaty relief is available.

Equity compensation is treated differently for California residents. If the shares vest or the options are exercised while being a California resident, then the entire amount will be subject to California taxation, regardless of the length of the taxpayer’s actual residence in the state. All that matters is that the taxpayer was a resident of the state during the time the RSUs vested or the options were exercised.

California is just one example, but many states have rules that are at least conceptually similar.  It is therefore important to understand the compensatory stock taxation rules of any state that could be applicable to an individual founder. Because these rules look back across years of service, residency and sourcing questions are best addressed before an IPO, tender offer, or acquisition is announced. Documentation of domicile, work location, vesting history, and exercise dates can matter as much as the tax model itself.

The Takeaway

Equity planning is rarely about a single decision; it is about how the pieces fit together over time. The decisions covered above, from equity award type and exercise timing to QSBS, Sec. 83(b) elections, and state tax exposure, affect one another and the holder's cash needs, so they are best coordinated before liquidity is underway. Modeling several scenarios, rather than anchoring on the headline sale price, gives founders and early employees a clearer view of what they will actually keep after tax.