Florida Supplemental Tax Regulations for Google (Alphabet) RSUs
Florida has no state individual income tax. Your employer will not withhold any state tax on RSU vest events.
Florida Safe Harbor & Underpayment Penalties
No state safe-harbor required.
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 Florida's statutory supplemental rate of 0.00% combined with the federal supplemental rate (22% on up to $1M). Because top earners in Florida reach marginal brackets exceeding these rates, you will face an incremental shortfall on April 15.
Localized CPA & Advisory Referral
Advisor Guidance: Connect with a Florida wealth advisor to reallocate tax savings from 0% state income into diversified index strategies.