Virginia Supplemental Tax Regulations for Google (Alphabet) RSUs
Virginia taxes taxable income over $17,000 at a top rate of 5.75%. Employers withhold supplemental wages at 5.75%.
Virginia Safe Harbor & Underpayment Penalties
Virginia 760ES quarterly payments.
Employer Stock Plan Specifics: Charles Schwab / Morgan Stanley
Google utilizes a frontloaded monthly vesting schedule (33% across years 1 and 2). Because monthly vests are treated as supplemental wage distributions, Schwab withholds federal tax at flat 22%. Googlers with total comp above $350k find that each monthly tranche underwithholds by 10% to 15%, compounding silently over 12 months.
When vesting at Google (Alphabet), Charles Schwab / Morgan Stanley calculates automatic sell-to-cover withholding using Virginia's statutory supplemental rate of 5.75% combined with the federal supplemental rate (22% on up to $1M). Because top earners in Virginia reach marginal brackets exceeding these rates, you will face an incremental shortfall on April 15.
Localized CPA & Advisory Referral
Advisor Guidance: Connect with a Northern Virginia tech CPA to manage quarterly 760ES vouchers for Amazon HQ2 & tech equity compensation.