Texas Supplemental Tax Regulations for Meta Platforms RSUs
Texas levies zero personal income tax on supplemental wages, RSU vests, or capital gains. Your statutory withholding is restricted exclusively to Federal supplemental (22%/37%) and FICA (Medicare/Social Security).
Texas Safe Harbor & Underpayment Penalties
No state safe-harbor required.
Employer Stock Plan Specifics: Charles Schwab Stock Plan Services
Meta vests quarterly on the 15th of February, May, August, and November. With META trading at elevated fair market values, single quarterly vests can easily exceed $50,000–$100,000. If you do not proactively adjust your supplemental withholding rate in Schwab to 37%, you will owe thousands in underpayment penalties.
When vesting at Meta Platforms, Charles Schwab Stock Plan Services calculates automatic sell-to-cover withholding using Texas's statutory supplemental rate of 0.00% combined with the federal supplemental rate (22% on up to $1M). Because top earners in Texas reach marginal brackets exceeding these rates, you will face an incremental shortfall on April 15.
Localized CPA & Advisory Referral
Advisor Guidance: Pair with an Austin tech CPA to model federal safe-harbor withholding and optimize post-vest equity liquidation.