What I wish I knew about ESPP and RSUs sooner

Original Article ↗ Hacker News Discussion ↗

Equity compensation like Employee Stock Purchase Plans (ESPPs) and Restricted Stock Units (RSUs) can be lucrative but come with complex tax and risk trade‑offs that many engineers and tech workers misunderstand. Commenters highlight pitfalls such as double taxation from incorrect cost basis reporting, state-specific rules that tax RSUs long after an employee leaves, and common myths about “being pushed into a higher tax bracket.” The prevailing advice is to treat shares as cash—sell RSUs and often ESPPs immediately to diversify—while using tools like donor-advised funds and, where available, mega backdoor Roths to improve after‑tax outcomes.

Donating RSUs/ESPP Stock and Taxes

  • Donating vested shares to a Donor Advised Fund or directly to a charity can avoid capital gains on post‑tax appreciation and provide a deduction (if itemizing), but:
    • You generally cannot avoid ordinary income tax on RSUs at vest.
    • You cannot transfer unvested RSUs; taxes at vest are withheld via sell‑to‑cover.
    • Deductions partially offset, but do not fully “refund,” taxes already paid.

State Taxation of RSUs

  • RSUs are typically taxed where you work when they vest.
  • California and New York pro‑rate income from grants across residency periods and may claim tax long after moving away.
  • Some states provide credits for taxes paid to another state, but interactions can be complex; several commenters recommend professional advice.
  • There is disagreement over how “fair” or “normal” CA/NY practices are, but multiple people confirm the pro‑ration behavior.

ESPP Structure and Value

  • Many ESPPs offer a 15% discount with a lookback to the lower of start/end price, creating a near‑certain gain if sold immediately; others offer smaller discounts or none, reducing attractiveness.
  • Risk mainly comes from blackout windows and short delay between purchase and sale; “black swan” drops are possible.
  • Effective annualized returns can be high because the discount applies even to recently contributed funds, but plans differ widely.

Tax Brackets and Timing

  • Several comments address misconceptions about being “pushed into a higher tax bracket”: only income above the threshold is taxed at the higher rate.
  • Timing income (e.g., deferring sales to another year) can matter for marginal rates, long‑term capital gains brackets, AMT, and special state rules.
  • Some note special New York rules (tax‑benefit recapture) affecting very high incomes.

RSU/ESPP Tax Gotchas

  • RSUs: income at vest; selling immediately usually yields no capital gain.
  • “Sell to cover” can still leave under‑withholding because supplemental withholding rates may be below your true marginal rate.
  • ESPP and RSU sales often arrive on 1099s with zero or unadjusted cost basis; you must manually use the adjusted basis (often on a supplemental statement) to avoid double taxation.
  • Wash sale rules can be triggered by RSU vesting counting as a “purchase.”

Strategy and Risk

  • Strong recurring theme: default to selling RSUs and ESPP shares as soon as allowed and diversify, because salary and job risk already depend on the employer.
  • Some share regret from both selling too early (missing upside) and holding too long (large losses), highlighting psychological bias and unpredictability.

Other Topics

  • Clarification that 83(b) elections do not apply to RSUs (but to RSAs/options).
  • Some discussion of negotiating cash instead of RSUs, usually uncommon at large firms but reported at certain companies.
  • Mega backdoor Roth and plan design disparities noted as important but employer‑dependent.