2026 official-source estimate
Estimate 2026 Louisiana withholding with the adopted 3.09% formula and the employee’s Form L-4 standard-deduction election.
Quick answer
Louisiana: Estimate 2026 Louisiana withholding with the adopted 3.09% formula and the employee’s Form L-4 standard-deduction election. This 2026 calculator combines that state treatment with federal withholding and FICA, while showing supported employee-paid programs and known exclusions explicitly.
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Included
Limitations
Enter gross pay for one pay period, federal W-4 adjustments, and the state details shown above. Federal withholding follows Publication 15-T. Louisiana subtracts the pay-period share of the Form L-4 Block A standard deduction—zero, $12,875, or $25,750 annually—from gross wages, treats a negative taxable base as zero, and applies the adopted 2026 rate of 3.09%. The signed L-4 Line 7 adjustment is applied per paycheck without allowing a negative final withholding amount.
Example: The official R-1306 example uses $700 of weekly wages and L-4 deduction selection 1. Subtracting $12,875 divided by 52 leaves $452.40; applying 3.09% produces $13.98 of Louisiana withholding. The calculator does not assume any unentered benefit deduction or invent a tax result.
Weekly, biweekly, semimonthly, and monthly are the supported paycheck frequencies. “Annual salary” is an earnings input and the annual view is a simple period multiplication; neither is an annual payroll-period method. The special Form W-4 adjustment for nonresident aliens is not modeled.
State paycheck questions
Federal withholding follows Publication 15-T. Louisiana subtracts the pay-period share of the Form L-4 Block A standard deduction—zero, $12,875, or $25,750 annually—from gross wages, treats a negative taxable base as zero, and applies the adopted 2026 rate of 3.09%. The signed L-4 Line 7 adjustment is applied per paycheck without allowing a negative final withholding amount.
Included in this estimate: Federal income tax withholding; Social Security and Medicare; 2026 Louisiana 3.09% withholding formula; Form L-4 standard-deduction selection 0, 1, or 2; Signed Form L-4 per-paycheck adjustment without negative withholding.
Not included in this estimate: Interstate wage allocation and resident-credit scenarios; Eligibility advice for special withholding exemption certificates; Supplemental-wage methods outside the regular-pay formula; Unentered employer benefits and unsupported deduction treatments.
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