GOLDEN HANDCUFFS // FYI 2026.RSU
STATE PRESET AMZN • $215 Colorado (CO)

Amazon RSU Taxes in Colorado (2026)

2026 RSU tax estimate for Amazon employees living in Colorado. Compares default brokerage withholding (4.40% state + 22% federal) against actual marginal tax brackets.

Preset Loaded: Amazon (AMZN) • 5% Year 1, 15% Year 2, 40% Year 3, 40% Year 4 (Semi-annual in Y1-2, quarterly/semi-annual in Y3-4)
Brokerage: Morgan Stanley at Work (Shareworks) / Fidelity
Vest & Comp Inputs2026 RATES
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Tax Filing Status
IRC § 3402(g) GAPEstimated April Tax Shortfall
$7,023

Your employer's brokerage will automatically sell shares at flat statutory rates (28.61% combined), leaving a $7,023 unpaid tax gap when your W-2 is filed in April.

Incremental Shares to Sell33 SHARES Liquidate manually upon vest to cover estimated federal & state gap
Net Shares Kept After Full Tax288 / 450 Retained value: $61,920
Total Gross Vest$96,750450 shares @ $215/share
Brokerage Sell-to-Cover$27,681129 shares liquidated automatically (28.61%)
True Federal Liability$28,308 Marginal 35.00% bracket on total comp $281,750
State Tax (CO)$4,257 Statutory withheld: $4,257 (4.40%)
2026 FICA Withholding$2,139 SS ($184.5k cap): $0 • Med: $2,139
Actual True Total Tax$34,704 Effective true tax rate: 35.87%

2026 Amazon Compensation Benchmarks in Colorado

Below is the 2026 tax withholding and April shortfall breakdown across sample Amazon engineering levels for a Single filer in Colorado (at a reference share price of $215/share via Morgan Stanley at Work (Shareworks) / Fidelity):

Amazon (AMZN) in Colorado (CO) — 2026 Withholding vs. Actual Tax by Level
Level & Role Base + Annual Vest CO + Fed Withheld True Total Tax Net April Shortfall Extra Shares to Sell
L5
SDE II / Mid-Level IC
$175,000 base
+$75,250 (350 sh)
 $21,998 $25,891 $3,893 19 shares
L6
Senior SDE / Senior PM
$195,000 base
+$161,250 (750 sh)
 $46,314 $62,822 $16,508 77 shares
L7
Principal SDE / Sr. Manager
$215,000 base
+$344,000 (1600 sh)
 $98,900 $141,366 $42,466 198 shares

Colorado Supplemental Tax Regulations for Amazon RSUs

Colorado levies a flat 4.40% individual income tax rate based on federal taxable income, plus a 0.45% Colorado FAMLI (Family and Medical Leave Insurance) payroll premium up to the Social Security wage cap ($184,500). Because employers withhold state tax at the exact 4.40% flat statutory rate, your state-level RSU withholding closely matches your actual Colorado liability.

Colorado Bracket Architecture: 4.40% flat state income tax rate across all income brackets.

Colorado Safe Harbor & Estimated Tax Vouchers (Colorado Form DR 0104EP (Individual Estimated Income Tax))

Colorado requires quarterly estimated payments on Form DR 0104EP if net Colorado tax liability exceeds withholding by $1,000 or more (safe harbor: 70% of current-year or 100% of prior-year Colorado tax; 110% if federal AGI > $150,000).

Multi-State Relocation & Nonresident Sourcing Rules in Colorado

Colorado allocates nonresident and part-year resident equity compensation based on the percentage of business days worked inside Colorado during the vesting period.

Employer Stock Plan Specifics: Amazon (Morgan Stanley at Work (Shareworks) / Fidelity)

Amazon equity packages are heavily backloaded into years 3 and 4 (40% of initial grant each year), bridged in years 1 and 2 by monthly prorated cash sign-on bonuses. While cash sign-on bonuses are often withheld via the aggregate payroll method or flat 22% supplemental rate, transitioning to Year 3 replaces monthly cash with lump-sum May and November RSU vests. When $80,000–$200,000+ of AMZN vests in a single tranche, Morgan Stanley or Fidelity withholds only 22% federal tax even though your top marginal rate is 32%, 35%, or 37%.

Withholding Election Guidance: Inside the Amazon Stock Portal (via Morgan Stanley at Work or Fidelity NetBenefits), navigate to Tax Withholding Elections prior to the open trading window preceding your May 15 or November 15 vest. If your plan permits supplemental rate overrides, increase federal withholding from 22% to 32% or 35%. Note that withholding rate changes cannot be modified once an insider trading blackout window closes or within 10 business days of a scheduled release.

2026 Statutory Parameters Quick Reference

2026 Federal & Colorado Statutory RSU Tax Parameters (AMZN)
Statutory Parameter 2026 Rate / Rule
Federal Supplemental Withholding Rate 22.00% (≤ $1M) • 37.00% (> $1M)
Colorado Supplemental Withholding 4.40%
Colorado Top Marginal Tax Bracket 4.40%
Colorado Estimated Tax Voucher Colorado Form DR 0104EP (Individual Estimated Income Tax)
2026 Social Security Limit $184,500 (6.2% FICA Cap)
Medicare & Additional Medicare 1.45% Uncapped + 0.9% over $200k/$250k
Amazon Stock Plan Brokerage Morgan Stanley at Work (Shareworks) / Fidelity

Other States for Amazon (AMZN)