GOLDEN HANDCUFFS // FYI 2026.RSU
STATE PRESET PRIVATE • $42 Massachusetts (MA)

Stripe RSU Taxes in Massachusetts (2026)

2026 RSU tax estimate for Stripe employees living in Massachusetts. Compares default brokerage withholding (5.00% state + 22% federal) against actual marginal tax brackets.

Preset Loaded: Stripe (Private) • Quarterly vesting (historically double-trigger RSUs modified via company-sponsored liquidity and tender offer settlements)
Brokerage: Carta / Morgan Stanley at Work
Vest & Comp Inputs2026 RATES
$
#
$
Tax Filing Status
IRC § 3402(g) GAPEstimated April Tax Shortfall
$14,106

Your employer's brokerage will automatically sell shares at flat statutory rates (29.29% combined), leaving a $14,106 unpaid tax gap when your W-2 is filed in April.

Incremental Shares to Sell336 SHARES Liquidate manually upon vest to cover estimated federal & state gap
Net Shares Kept After Full Tax2138 / 3500 Retained value: $89,796
Total Gross Vest$147,0003500 shares @ $42/share
Brokerage Sell-to-Cover$43,0551026 shares liquidated automatically (29.29%)
True Federal Liability$46,446 Marginal 35.00% bracket on total comp $337,000
State Tax (MA)$7,350 Statutory withheld: $7,350 (5.00%)
2026 FICA Withholding$3,365 SS ($184.5k cap): $0 • Med: $3,365
Actual True Total Tax$57,160 Effective true tax rate: 38.88%

2026 Stripe Compensation Benchmarks in Massachusetts

Below is the 2026 tax withholding and April shortfall breakdown across sample Stripe engineering levels for a Single filer in Massachusetts (at a reference share price of $42/share via Carta / Morgan Stanley at Work):

Stripe in Massachusetts (MA) — 2026 Withholding vs. Actual Tax by Level
Level & Role Base + Annual Vest MA + Fed Withheld True Total Tax Net April Shortfall Extra Shares to Sell
L2
Software Engineer (L2)
$175,000 base
+$92,400 (2200 sh)
 $27,483 $33,091 $5,608 134 shares
L3
Senior Software Engineer (L3)
$205,000 base
+$159,600 (3800 sh)
 $46,843 $64,236 $17,394 415 shares
L4
Staff Software Engineer (L4)
$240,000 base
+$294,000 (7000 sh)
 $86,289 $123,437 $37,148 885 shares

Massachusetts Supplemental Tax Regulations for Stripe RSUs

Massachusetts withholds supplemental RSU wages at the standard 5.0% flat income tax rate. However, under the Massachusetts Fair Share Amendment (Article 44), total annual taxable income exceeding the inflation-adjusted ~$1,000,000 threshold is subject to an additional 4.0% surtax (9.0% total marginal rate), creating an automatic 4.0% state withholding deficit on large equity vests.

Massachusetts Bracket Architecture: 5.0% flat rate on earned wages and long-term capital gains; 9.0% total rate on taxable income over ~$1,000,000; 8.5% on short-term capital gains.

Massachusetts Safe Harbor & Estimated Tax Vouchers (Massachusetts Form 1-ES (Estimated Income Tax Voucher))

Massachusetts requires quarterly estimated payments (Form 1-ES / MassTaxConnect) equal to 80% of current-year tax or 100% of prior-year tax if unpaid state tax exceeds $400.

Multi-State Relocation & Nonresident Sourcing Rules in Massachusetts

Under 830 CMR 62.5A.1, Massachusetts sources nonresident RSU income based on the ratio of Massachusetts workdays to total workdays between the grant date and vest date.

Employer Stock Plan Specifics: Stripe (Carta / Morgan Stanley at Work)

Stripe has pioneered ongoing employee liquidity for a late-stage private company by waiving liquidity triggers on specific RSU cohorts and executing regular company-sponsored tender offers to cover tax obligations and provide secondary liquidity. However, when Stripe net-settles shares at vest or executes a tender offer, payroll withholding still defaults to the 22% federal statutory rate—leaving a 10% to 15% cash tax gap on illiquid private equity.

Withholding Election Guidance: Unlike public company employees who can log into Schwab or Fidelity any day and sell extra shares on the open market to pay the IRS in April, Stripe employees hold private shares that cannot be traded outside designated tender offer windows. Therefore, when a tender offer window opens on Carta / Morgan Stanley at Work, you must sell enough secondary shares (or set aside cash from your base salary) to cover the 13%–15% federal and state underwithholding gap.

2026 Statutory Parameters Quick Reference

2026 Federal & Massachusetts Statutory RSU Tax Parameters (Private)
Statutory Parameter 2026 Rate / Rule
Federal Supplemental Withholding Rate 22.00% (≤ $1M) • 37.00% (> $1M)
Massachusetts Supplemental Withholding 5.00%
Massachusetts Top Marginal Tax Bracket 9.00%
Massachusetts Estimated Tax Voucher Massachusetts Form 1-ES (Estimated Income Tax Voucher)
2026 Social Security Limit $184,500 (6.2% FICA Cap)
Medicare & Additional Medicare 1.45% Uncapped + 0.9% over $200k/$250k
Stripe Stock Plan Brokerage Carta / Morgan Stanley at Work

Other States for Stripe (Private)