Stock Options and RSUs in Divorce

Stock options, restricted stock units (RSUs), and other forms of equity compensation can represent hundreds of thousands of dollars in value — sometimes more than a family home or retirement account. But dividing them in divorce is far more complex than splitting a bank account or even a 401(k).

The core challenges come down to three issues. Some equity grants may not have vested yet, meaning their value is uncertain and tied to continued employment. Tax treatment varies depending on the type of equity and when it is exercised. And valuation depends on whether the company is publicly traded, pre-IPO, or a startup with speculative worth. This guide covers how courts classify, value, and divide equity compensation — and what you need to know to protect your financial interests.

Types of Equity Compensation

Before diving into how equity is divided, it helps to understand what you are dealing with.

Stock options (ISOs and NSOs). A stock option gives the employee the right to buy company stock at a set price — called the strike price — regardless of the current market price. Incentive stock options (ISOs) receive favorable tax treatment, with gains potentially taxed at capital gains rates. Non-qualified stock options (NSOs) are taxed as ordinary income when exercised. The value of an option equals the market price minus the strike price. If the stock trades at $150 and the strike price is $40, each option is worth $110.

Restricted stock units (RSUs). The company grants shares that vest over a set schedule — typically three to four years. No purchase required. RSUs are taxed as ordinary income when they vest. Value equals the current market price multiplied by the number of shares.

Employee stock purchase plans (ESPPs). Employees buy company stock at a discount, usually 15% below market price. Shares purchased during the marriage may be marital property.

Restricted stock awards. Similar to RSUs, but shares are granted immediately with restrictions on selling until they lapse.

Are Stock Options and RSUs Marital Property?

Whether equity compensation is marital property — and how much of it — depends on when the grant was made and what it was intended to compensate.

Granted during the marriage for past services: These are marital property in virtually every state. If your spouse received RSUs during the marriage as compensation for work already performed, the full value is subject to division.

Granted during the marriage but vesting after divorce: Courts treat these as partially marital property. The portion that vested during the marriage is marital. The portion that vests after divorce may be separate, marital, or a mix — depending on the court’s analysis of why the options were granted. Most courts use the coverture fraction to determine the marital share.

Granted before the marriage: Generally separate property. However, if they vest during the marriage, a court may classify the vesting-period portion as marital — depending on whether the grant was compensation for past work (separate) or an incentive for future work (potentially marital).

Granted after separation: Generally separate property, but some states use the date of filing or final divorce — not separation — as the cutoff.

The Coverture Fraction

The coverture fraction is the formula courts use to calculate the marital portion of equity compensation that spans the marriage.

The basic formula:

• Numerator: The number of months of marriage during the vesting period
• Denominator: The total number of months in the vesting period

Example: An employee receives a stock option grant with a 4-year (48-month) vesting schedule. The couple was married for 3 of those 4 years before separating. The coverture fraction is 36/48 = 75%. That means 75% of the options are marital property, and 25% are the employee spouse’s separate property.

The formula sounds simple, but states apply it differently:

• Some states measure from the grant date to the date of separation. This is the most common approach.
• Other states measure from the grant date to the date of vesting. This can produce a different result if separation and vesting happen at different times.
• A few states measure from the date of hire to the date of separation for retention-based grants, reasoning that the full employment period contributed to earning the equity.

The coverture fraction applies to each grant separately. An employee with three option grants from different years will have three different coverture fractions.

How Courts Divide Equity Compensation

Once the marital portion is determined, the court must decide how to actually divide it. There are three primary approaches, each with different trade-offs.

Immediate offset. The equity is valued now, and the non-employee spouse receives other marital assets of equal value. If the marital portion of vested options is worth $200,000, the non-employee spouse might receive an extra $200,000 in retirement assets or home equity. This provides a clean break but requires agreeing on a present value for options that may not be exercised for years.

Deferred distribution. The court orders a split of actual proceeds when options are exercised or RSUs vest. This is fairer when future value is uncertain, but it keeps both parties financially tied together after divorce.

Buy-out. The employee spouse pays the non-employee spouse their calculated share in cash or through a structured payment plan. This works well when the employee spouse has sufficient liquid assets and wants full control of their equity.

Each approach carries different tax implications and risk profiles. Immediate offset shifts stock price risk to the employee spouse. Deferred distribution shares both risk and upside. A buy-out eliminates risk for the non-employee spouse but may cost the employee spouse if the stock later declines.

Tax Implications

Tax treatment is one of the most overlooked issues in dividing equity compensation. Getting it wrong can cost either spouse thousands of dollars.

ISOs vs. NSOs. ISOs receive preferential treatment — no ordinary income tax at exercise, with gains potentially taxed at the long-term capital gains rate (0%, 15%, or 20%). However, the spread at exercise may trigger the alternative minimum tax (AMT). NSOs are taxed as ordinary income at exercise, at rates up to 37% federally.

RSU taxation. RSUs are taxed as ordinary income when they vest. The company withholds taxes at vesting, typically at 22% federally — but the actual tax owed may be higher depending on total income.

Who bears the tax burden. The employee spouse reports the income and pays the taxes. The non-employee spouse’s share should be calculated on an after-tax basis. If the employee spouse exercises $100,000 worth of NSOs and owes $35,000 in taxes, the divisible amount is $65,000 — not $100,000.

Capital gains on subsequent sale. After exercising options or receiving vested RSUs, any further gain from holding the shares is subject to capital gains treatment. Shares held for more than one year qualify for long-term rates.

Valuation Challenges

Not all equity compensation has a clear market value.

Underwater options. When the strike price exceeds the current market price, options are “underwater” — exercising them would mean paying more than the stock is worth. Courts may assign some time value, but deeply underwater options are often treated as worthless.

Pre-IPO stock. Without a public market price, courts may rely on the company’s most recent 409A valuation (an independent appraisal required for tax purposes). These valuations can be months old and may not reflect current conditions.

Startup equity. Stock in early-stage companies may be worth millions — or nothing. Courts typically discount startup equity heavily, but there is no standard formula. Expert testimony is often needed.

Black-Scholes model. Courts sometimes use this mathematical model to estimate the value of unvested or unexercised options based on stock price, strike price, time until expiration, and volatility. It may not perfectly fit employee options with restrictions.

Discount for lack of marketability. Employee stock options and restricted shares cannot be sold on the open market. Courts may apply a discount — typically 10% to 35% — to reflect this lack of liquidity.

Frequently Asked Questions

Are unvested stock options marital property?

In most states, yes — at least partially. Courts use the coverture fraction to determine the marital portion. Even options that will not vest for years after the divorce may be partially marital if the vesting period overlapped with the marriage.

How are RSUs valued in a divorce?

Vested RSUs are valued at the current market price multiplied by the number of units. For unvested RSUs, courts may apply a discount for the risk that the employee leaves before vesting or the stock price declines. The marital portion is determined by the coverture fraction.

Who pays taxes on divided stock options?

The employee spouse bears the tax liability because the income is reported on their tax return. The non-employee spouse’s share should be calculated on an after-tax basis. Some settlement agreements require the employee spouse to provide documentation of taxes paid so both parties can verify the calculation.

What happens to stock options after divorce?

Stock options remain in the employee spouse’s name — they cannot be transferred. The divorce decree or settlement agreement specifies how the marital portion will be divided through an immediate offset, deferred distribution, or buy-out. The employee spouse retains the obligation to exercise before expiration.

Can a QDRO be used for stock options?

No. A Qualified Domestic Relations Order (QDRO) applies only to qualified retirement plans like 401(k)s and pensions governed by ERISA. Stock options and RSUs are not retirement plan assets. The division is handled through the divorce decree or a separate court order. For retirement accounts, see our guide on dividing retirement accounts in divorce.

What to Do Next

Equity compensation adds significant complexity to property division in divorce. Taking the right steps early protects your share and avoids costly mistakes.

1. Gather all equity compensation documents. Collect grant agreements, vesting schedules, exercise history, and current account statements for every equity plan.
2. Identify the grant dates and vesting schedules. Each grant needs its own coverture fraction analysis.
3. Determine the current value. For public companies, use the current stock price. For private companies, obtain the most recent 409A valuation.
4. Understand the tax implications. Calculate after-tax values before comparing equity to other marital assets. ISOs, NSOs, and RSUs all have different tax treatment.
5. Consult a family law attorney. Equity compensation requires specialized knowledge to value and divide correctly. An experienced attorney can help you negotiate the right division method. Schedule a free consultation to discuss your situation.