How Our California Paycheck Calculator Works: 2026 Methodology
Our California paycheck calculation engine strictly implements 2026 tax tables and withholding algorithms from official IRS Publication 15-T (Federal Income Tax Method) and California EDD DE 44 (California Personal Income Tax Withholding Schedules).
Statutory Formulas & Parameters (2026)
| Parameter / Tax | Value / Cap (2026) | Authority & Publication |
| Federal Income Tax (FIT) | 7 Tax Brackets (10% – 37%) | IRS Publication 15-T |
| California Personal Income Tax (PIT) | Method B Exact Calculation Method | California EDD Publication DE 44 |
| FICA Social Security Rate | 6.2% | IRS Circular E |
| Social Security Wage Limit | $176,100 wage ceiling | Social Security Administration (SSA) |
| FICA Medicare Rate | 1.45% (Uncapped) | IRS Circular E |
| Additional Medicare Tax | 0.9% on earnings over $200,000 | IRS Section 3101(b)(2) |
| California SDI Rate | 1.1% (Uncapped) | California EDD Disability Notice |