RSU Tax Planning: When Should You Sell to Minimize the Tax Hit?

How Does RSU Taxation Actually Work?

Restricted Stock Units are taxed differently from stock options, and the distinction matters.

At vesting: the fair market value of vested shares is ordinary income, reported on your W-2. Your employer typically withholds a flat 22% federal supplemental rate (or 37% for amounts above $1M). If your effective tax rate is higher than 22%, the withholding is insufficient — you owe the difference at tax time.

After vesting: the shares have a cost basis equal to the FMV at vesting. If the stock price increases after vesting and you hold for more than 12 months before selling, that gain is taxed at long-term capital gains rates (0%, 15%, or 20% depending on income).

The critical implication: there is no tax disadvantage to selling immediately at vesting in terms of the ordinary income portion. The only tax consideration for immediate sale is eliminating capital gains exposure — both potential gains and the concentrated position risk.

How Do High-Income Earners Coordinate RSU Vesting with Their Tax Bracket?

For employees at large tech companies with significant RSU vesting schedules, the real planning challenge is bracket management.

If your base salary already puts you in the 32% bracket, additional RSU income is taxed at 32-37%. The withholding at 22% creates a predictable tax shortfall that must be planned for.

Strategies worth modeling: - Increasing 401(k) contributions to the maximum in years with heavy RSU vesting - Charitable contributions (bunching into years with large RSU vesting) - Timing of other discretionary income events

Note: RSU income also affects IRMAA if you're on Medicare, Net Investment Income Tax calculations, and potentially the Additional Medicare Tax (0.9% on wages above $200K single / $250K MFJ).

Want to See How RSU Vesting Fits Your Retirement Timeline?

RSU income affects your Roth conversion window, your retirement date options, and your tax bracket exposure in ways that compound over time. Getting the timing right matters — especially in the years before retirement when the window starts opening.

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