Equity Compensation on Your W-2: Boxes 1, 12, and 14 Explained

The big picture

Why Box 1 is higher than your salary

Box 1 on your W-2 reports total taxable wages, tips, and other compensation — not just your base salary. When stock-based compensation creates a taxable event, the income is included in Box 1 alongside your regular pay. Common additions that inflate Box 1 beyond your base salary include the fair market value of RSUs at vesting, the spread on NQSO exercises, ESPP disqualifying-disposition income, taxable employer-provided benefits such as group-term life insurance above $50,000, and imputed income for personal use of a company vehicle.

The first step to reconciling your W-2 is to compare Box 1 with your final pay stub's year-to-date gross wages. The difference will usually equal your equity compensation income plus any other imputed items. If the numbers do not match, contact your payroll department before filing your return.

RSUs on your W-2: Box 1 and Box 14

Restricted stock units are taxed as ordinary income on the vest date. The taxable amount is the number of shares that vest multiplied by the stock's fair market value on that day. This amount is included in three boxes:

• Box 1 (Wages) — the RSU income is combined with your base salary and any other taxable compensation.
• Box 3 (Social Security wages) — included up to the annual Social Security wage base.
• Box 5 (Medicare wages) — included with no cap.

Many employers also list the RSU amount in Box 14 with a label such as "RSU," "RS," or "Restricted Stock." Box 14 is an optional, informational field — there is no IRS-mandated code for RSUs. The amount in Box 14 is not additional income; it is already counted in Box 1. Its purpose is to help you identify how much of your total wages came from RSU vesting.

There is no Box 12 code specifically designated for RSUs. If you see Code V in Box 12, that is reporting NQSO income, not RSUs.

Cost basis for RSU shares

Your cost basis for shares received through RSU vesting equals the fair market value on the vest date — the same amount reported in Box 1. When you eventually sell the shares, you report the gain or loss relative to this basis on Schedule D and Form 8949. If you sell immediately at vest (or use sell-to-cover), the gain or loss is typically minimal and short-term. If you hold and sell later, the holding period begins on the vest date.

NQSOs on your W-2: Box 1 and Box 12 Code V

Non-qualified stock options (also called NSOs or NQSOs) create a taxable event when you exercise them — not when they are granted or when they vest. The taxable amount, called the spread, equals the difference between the fair market value of the stock at exercise and your strike (exercise) price, multiplied by the number of shares exercised.

This spread appears in two key places:

• Box 1 (Wages) — combined with base salary and other compensation.
• Box 12, Code V — this code specifically identifies income from exercising nonstatutory stock options. The amount in Code V should match the NQSO-related portion of Box 1 (though rounding differences of a few cents can occur).

The spread is also included in Boxes 3 and 5 for FICA purposes. When you later sell the shares, your cost basis is the fair market value at exercise (strike price plus the spread), and any further gain or loss is reported on Schedule D.

Use our NSO stock option tax calculator to estimate your tax on an NQSO exercise.

ESPPs on your W-2: it depends on the disposition

Employee Stock Purchase Plans allow you to buy company stock at a discount, typically 15 percent below the lower of the stock price at the start or end of the offering period. The tax treatment depends on whether you make a qualifying or disqualifying disposition when you sell the shares.

Disqualifying disposition (most common)

If you sell ESPP shares before holding them for both two years from the offering date and one year from the purchase date, the sale is a disqualifying disposition. In this case, the compensation income — generally the discount you received on the purchase price — is included in Box 1 as ordinary income. Many employers also show this amount in Box 14 with a label like "ESPP" or "Section 423." Your employer files Form 3922 to report the purchase details.

Qualifying disposition

If you hold the shares past both thresholds, the ordinary-income portion (limited to the lesser of the discount at the offering date or the actual gain at sale) is taxed at ordinary rates, and any additional gain is a long-term capital gain. Whether the ordinary-income portion appears on your W-2 varies by employer — some report it in Box 1 and Box 14, while others leave the reporting entirely to you on your tax return. Form 3922 is still filed.

Use our ESPP tax calculator to estimate the tax impact of your ESPP sale.

ISOs on your W-2: qualifying vs disqualifying

Incentive stock options receive preferential tax treatment — but the W-2 reporting depends on whether you make a qualifying or disqualifying disposition.

Qualifying disposition

If you hold ISO shares for at least two years from the grant date and one year from the exercise date, the entire gain above the strike price is taxed as a long-term capital gain. No compensation income appears on your W-2. However, the spread at exercise (FMV minus strike price) is an adjustment for the Alternative Minimum Tax (AMT), reported on Form 6251. Your employer files Form 3921 to document the exercise.

Disqualifying disposition

If you sell before meeting both holding periods, the spread at exercise — up to the actual gain on the sale — is reclassified as ordinary compensation income and included in Box 1 of your W-2. There is no specific Box 12 code for ISO disqualifying dispositions; the income simply appears in Box 1 wages. Any remaining gain above the FMV at exercise is a capital gain reported on Schedule D.

See our 83(b) election tax calculator for early exercise scenarios involving restricted stock.

Reference

Complete W-2 box map for stock compensation

DQ = disqualifying disposition; qual. = qualifying disposition. Box 14 labels are employer-discretionary and not standardized by the IRS.

Common mistakes when filing with equity compensation

1. Double-counting RSU income

Because RSU income is already in Box 1, entering it again as a separate income item on your return overstates your wages. If you see RSU income in both Box 1 and Box 14, remember that Box 14 is informational — it is a subset of Box 1, not additional income.

2. Using the wrong cost basis on the 1099-B

Your brokerage's 1099-B may report the cost basis of shares from equity compensation as zero or as the strike price alone, ignoring the income already taxed on your W-2. If you do not adjust the basis, you will pay tax twice on the same income. Always compare the 1099-B basis with the amount reported on your W-2 (and Forms 3921 or 3922, if applicable).

3. Ignoring the AMT on ISOs

A qualifying ISO disposition avoids ordinary income tax, but the spread at exercise is still an AMT preference item. If you exercise a large number of ISOs and hold the shares, you may owe AMT even though no W-2 income was generated. Run Form 6251 before deciding to hold ISO shares past year-end.

The withholding gap on equity income

Equity compensation that appears on your W-2 is subject to the flat 22 percent supplemental-wage withholding rate. If your marginal bracket is higher, a withholding shortfall results. For a detailed breakdown of this problem and how to fix it, see our guides on the RSU withholding shortfall and the bonus withholding shortfall (which covers all supplemental-wage shortfalls including commissions and lump-sum payments).