Test cases
These cases are computed from the same code as the calculators. A failing case stops the build.
Tax year 2026 Tables verified 2026-10-09
| Case | Expected | Result | Source |
|---|---|---|---|
| F1. Single, biweekly $2,500 | $216.15 | $216.15 | Pub 15-T 2026 Worksheet 1A, Single standard |
| F2. Married filing jointly, monthly $10,000, Step 3 $4,400 | $470.00 | $470.00 | Pub 15-T 2026 Worksheet 1A, MFJ standard |
| F3. Single, Step 2 checked, weekly $1,500 | $251.67 | $251.67 | Pub 15-T 2026 Single Step 2 checkbox table |
| F4. Head of household, semimonthly $3,000 | $224.50 | $224.50 | Pub 15-T 2026 Head of household standard table |
| F5. Pre-2020 W-4, single, 2 allowances, biweekly $2,000 | $156.15 | $156.15 | Pub 15-T 2026, $4,300 allowance |
| F6. F1 plus Step 4(b) $5,000 | $193.08 | $193.08 | Pub 15-T 2026 Worksheet 1A line 1f |
| S1. Social Security on $200,000 | $11,439.00 | $11,439.00 | SSA 2026 wage base $184,500 |
| S2-medicare. Medicare on $250,000 | $3,625.00 | $3,625.00 | 1.45% of Medicare wages |
| S2-additional. Additional Medicare on $250,000 | $450.00 | $450.00 | 0.9% after $200,000 from one employer |
| B1. $10,000 bonus, flat method | $2,200.00 | $2,200.00 | IRS Publication 15, 22% supplemental rate |
| P1. California SDI on $2,500 | $32.50 | $32.50 | EDD, 1.3% |
| P2. Washington PFML on $2,500 | $20.18 | $20.18 | 1.13% premium × 71.43% employee share |
| P3-tdi. New Jersey TDI on $2,500 | $4.75 | $4.75 | NJDOL 0.19% |
| P3-fli. New Jersey FLI on $2,500 | $5.75 | $5.75 | NJDOL 0.23% |
| P4-tdi. New Jersey TDI annual maximum | $325.09 | $325.09 | NJDOL wage base $171,100 |
| P4-fli. New Jersey FLI annual maximum | $393.53 | $393.53 | NJDOL wage base $171,100 |
| P5. Minnesota Paid Leave on $2,500 | $11.00 | $11.00 | 0.44% |
| P5-max. Minnesota Paid Leave annual maximum | $814.00 | $814.00 | 0.44% of $185,000 |
| P6. Massachusetts PFML on $2,500 | $11.50 | $11.50 | 0.46% employee share |
| P7. New York Paid Family Leave on $2,500 | $10.80 | $10.80 | 0.432% |
| P7-max. New York Paid Family Leave annual maximum | $411.91 | $411.91 | NY PFL annual maximum $411.91 |
| L1. Philadelphia resident, $2,500 on July 15, 2026 | $93.38 | $93.38 | 3.735% from July 1, 2026 |
| L1-non. Philadelphia nonresident, $2,500 on July 15, 2026 | $85.63 | $85.63 | 3.425% from July 1, 2026 |
| L2. Philadelphia resident, $2,500 on June 15, 2026 | $93.50 | $93.50 | 3.74% through June 30, 2026 |
| ST1. Pennsylvania income tax on $2,500 | $76.75 | $76.75 | 3.07% of compensation |
| ST2-tx. Texas wage income tax | $0.00 | $0.00 | No wage income tax |
| ST2-fl. Florida wage income tax | $0.00 | $0.00 | No wage income tax |
| CA-B. California Method B example, biweekly $1,600, married, 2 allowances and 1 estimated | $2.38 | $2.38 | EDD 2026 Method B |
| CA-E. California Method B example E annual tax | $99.20 | $99.20 | EDD 2026 Method B example E |
| CA-E-period. California Method B example E per paycheck | $4.13 | $4.13 | EDD 2026 Method B example E |
| CA-low. California low-income exemption, weekly $210 single | $0.00 | $0.00 | EDD 2026 Method B low-income exemption |
| IL. Illinois $60,000, one allowance, annual tax | $2,825.21 | $2,825.21 | 4.95% after a $2,925 allowance |
| NY. New York statutory tax on $60,000 single | $2,643.00 | $2,643.00 | Tax Foundation 2026 brackets after the $8,000 standard deduction |
| NYC. New York City tax on $52,000 of New York taxable income | $1,890.69 | $1,890.69 | NYC resident rates. Not the NYS-50-T-NYC wage table. |
Questions
What does a pass mean?
The engine returned the cited amount to the cent. It does not mean a reviewer signed the page.
Are unverified local taxes tested?
No. Programs we could not verify are omitted, so they have no passing case.