Use this interactive Commission & Bonus Tax Withholding Calculator (2026): IRS 22% / 37% + NYS 11.70% + NYC 4.25% to model your exact 2026 financial, tax, mortgage, or closing cost position across New York City, New York State, New Jersey, Connecticut, Massachusetts, Pennsylvania, and Florida—with zero personal information required. Click any 1-Click Benchmark pill inside the simulator to load verified East Coast scenarios, or click Copy Custom Scenario Link to share a deep-linked calculation.
Commission & Bonus Tax Withholding Calculator (2026): IRS 22% / 37% + NY/NYC
Calculates exact payroll withholding on sales commissions, Wall Street bonuses, and RSU vestings under the 22% IRS supplemental flat rate (37% above $1M), NYS 11.70%, NYC 4.25%, and FICA caps.
For a comprehensive line-by-line legal breakdown, worked household examples, and filing instructions, read our companion pillar report: Complete 2026 Statutory Guide & Case Studies →
2026 Statutory Parameters, Rates & Legal Citations
| Statutory Component | 2026 Rate / Limit | Application & Thresholds | Primary Authority |
|---|---|---|---|
| IRS Supplemental Flat Rate (≤ $1,000,000) | 22.00% Mandatory Flat | Applies to bonuses, sales commissions, RSUs, signing bonuses & severance | Treas. Reg. § 31.3402(g)-1 |
| IRS Excess Supplemental Rate (> $1,000,000) | 37.00% Mandatory Rate | Applies to cumulative supplemental wages above $1,000,000 in calendar year | IRC § 3402(g) |
| New York State Supplemental Rate | 11.70% Statutory Rate | Exceeds NYS 10.90% top marginal bracket—often causing April tax refunds | NYS Publication NYS-50 |
| New York City Supplemental Rate | 4.25% Statutory Rate | Exceeds NYC 3.876% top marginal bracket by 0.374% | NYS Publication NYS-50 |
| FICA Social Security & Medicare | 6.20% (to $176.1k) + 1.45%/2.35% | $0 Social Security withheld once YTD base + bonus crosses $176,100 | SSA 2026 Cap |
Frequently Asked Questions & Statutory Rules (2026)
Are sales commissions taxed at a higher tax rate than regular salary?
No—they are WITHHELD at supplemental payroll rates (22% federal + 11.70% NYS + 4.25% NYC), but on your actual Form 1040 and IT-201 tax return, commissions and bonuses are taxed at the exact same progressive ordinary income brackets as your base salary.
Why does New York State withhold 11.70% and NYC withhold 4.25% on bonuses when the top brackets are lower?
New York State’s supplemental withholding table (Publication NYS-50) sets the flat supplemental withholding rate at 11.70% (NYS) and 4.25% (NYC) to account for NY’s "benefit recapture" provision on high earners. For employees earning under $1,077,550, this creates an automatic overwithholding of 4.85%+ that is refunded when you file Form IT-201.
What happens when my cumulative bonuses or RSU vestings exceed $1,000,000 in a year?
The moment your year-to-date supplemental wages (bonuses + commissions + vested RSUs + non-qualified stock options) cross $1,000,000 with a single employer, federal law requires the payroll system to switch from 22% withholding to a mandatory 37% flat withholding rate on every dollar above $1,000,000 regardless of your W-4.
How can I legally reduce the 40%–50% tax withholding on my bonus check?
Before your bonus or commission payroll run closes, increase your pre-tax 401(k) deferral percentage (up to the $23,500 standard / $31,000 age 50+ / $34,750 age 60–63 limit) so the contribution is deducted before federal, NYS, and NYC supplemental withholding is calculated.