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Browse all calculators, employer equity guides, and tax documentation on goldenhandcuffs.fyi.
1. Core Pages
RSU Tax Calculator
2026 RSU tax calculator modeling federal supplemental withholding, FICA wage limits, and safe-harbor share sales.
Tech Employer Directory
Compare vesting schedules and withholding policies across Amazon, Google, Meta, Apple, Microsoft, Nvidia, Stripe, and Databricks.
RSU Tax Guides
Guides covering IRC § 3402(g), Form 1040-ES safe harbor rules, Form 1099-B double taxation, and multi-state sourcing.
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Background on goldenhandcuffs.fyi, tax sources, and how the site is maintained.
Tax Methodology (2026)
Formulas and 2026 tax parameters under IRC § 3402(g), IRC § 6654 safe harbors, and the $184,500 Social Security wage cap.
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Terms of use and financial and tax disclaimers.
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2. RSU Tax Guides
The IRC § 3402(g) Supplemental Withholding Gap: Why 22% Sell-to-Cover Leaves a 15% Tax Deficit
Explains the statutory discrepancy between the 22% flat federal supplemental withholding rate applied during brokerage sell-to-cover transactions and the 32%–37% progressive income tax brackets faced by senior engineers and product leaders.
IRS Form 1040-ES Safe Harbor & Form 2210 Annualized Income Installment Method for Variable RSU Vests
Covers the statutory mechanics of IRC § 6654 estimated tax penalties, the asymmetrical IRS quarterly calendar, the 110% prior-year vs. 90% current-year safe harbor tests, and California’s $1M AGI rule.
How to Prevent RSU Double Taxation: Reconciling W-2 Box 14 with Form 1099-B on Form 8949
Step-by-step instructions for auditing brokerage Form 1099-B statements against W-2 Box 1/14 ordinary income and applying Form 8949 cost basis adjustments.
Multi-State RSU Tax Allocation & Trailing Liability When Relocating Before Vest (CA, NY, WA, TX)
Details the statutory workday-allocation formulas used by California, New York, and Massachusetts to tax unvested RSUs for years after an employee relocates to a zero-tax state.
Pre-IPO Double-Trigger RSUs, Liquidity Waivers & Secondary Tender Offer Taxation
Analyzes double-trigger RSU mechanics (time-vesting + liquidity-event trigger), company-sponsored liquidity waivers, secondary tender offers, and the $1M supplemental rate cliff.