2026 official-source estimate
Louisiana Paycheck Calculator
Estimate 2026 Louisiana withholding with the adopted 3.09% formula and the employee’s Form L-4 standard-deduction election.
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Pay classification
Work locations and home state
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Federal withholding profile
Federal W-4 adjustments
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Year-to-date wages and other deductions
Included
What this estimate covers
- 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
Limitations
What is not included
- 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
How the Louisiana estimate works
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.
Source trail
Official data used on this page
Each rule is versioned and reviewed before production use.
See every checksum and effective date on the tax data sources page.