Louisiana Paycheck Calculator (2026 Take-Home Pay)

Louisiana overhauled its income tax structure recently, replacing a set of graduated brackets with a single flat rate of 3.00% that applies to every dollar of taxable wages. The Louisiana Paycheck Calculator applies that flat rate alongside federal withholding and FICA to compute exact net take-home pay.

The reform lowered Louisiana's rate meaningfully compared to prior years, so workers checking their withholding against older references or pay stubs from before the change should expect a noticeably smaller state tax bite under the current 2026 tables.

Salaried employees, hourly workers, payroll administrators, and HR teams rely on this level of precision to plan bi-weekly, semi-monthly, monthly, and weekly payroll schedules. Because the flat rate applies to wages after pre-tax deductions like 401(k) and HSA contributions, those elections lower the state tax bill proportionally, which matters for accurate net-pay forecasting at any salary level.

Louisiana scrapped its three-bracket schedule in a 2025 reform and now taxes all income at a flat 3.0%, one of the lowest rates of any state that taxes wages at all. The reform paired the lower rate with a much larger standard deduction, so the exempt slice at the bottom grew as the rate fell. The paycheck comes out of:

Four steps stand between gross and net:

1. FICA Payroll Tax Computation: - Social Security (OASDI): 6.20% withheld on wages up to the 2026 statutory wage base ($184,500). - Medicare (HI): 1.45% withheld on all gross earnings (no wage cap), plus 0.90% Additional Medicare Tax on earnings exceeding $200,000 (single) or $250,000 (married filing jointly).
2. Federal Income Tax Withholding: Evaluated using 2026 progressive federal tax brackets (10%, 12%, 22%, 24%, 32%, 35%, 37%) after applying standard deduction thresholds ($16,100 single / $32,200 married joint).
3. Louisiana State Income Tax Withholding: A flat 3.0% applied to 2026 Louisiana taxable income.
4. Pay Period Proration: Annual net compensation is divided across the designated pay frequency (26 bi-weekly, 24 semi-monthly, 12 monthly, or 52 weekly pay periods).

Consider an employee in Louisiana earning $75,000 annually, paid bi-weekly (26 paychecks per year), filing single, with $3,500 in annual pre-tax 401(k) contributions.

1. Gross pay per paycheck. $75,000 ÷ 26 pay periods = $2,884.62 before any withholding.
2. Pre-tax deduction. The $3,500 annual 401(k) contribution reduces each paycheck by $134.62 and also shrinks the wages used to calculate federal and state income tax; FICA is still assessed on the full gross amount.
3. FICA payroll taxes. Social Security withholds 6.2% of gross pay ($178.85) and Medicare withholds 1.45% ($41.83), for $220.67 per paycheck.
4. Federal income tax withholding. Applying the 2026 IRS withholding tables to the reduced taxable wage withholds $265.38 per paycheck.
5. Louisiana state tax withholding. Louisiana's flat 3.00% rate applies to the reduced taxable wage, withholding $82.50 per paycheck.
6. Net take-home pay. $2,884.62 gross, minus $134.62 pre-tax, minus $220.67 FICA, minus $265.38 federal tax, minus $82.50 state tax leaves $2,181.44 per paycheck, equal to $56,717.50 per year, an effective total tax rate of 19.71%.

From Month Two To The Twelve-Month Total

Louisiana replaced its bracket ladder with a flat 3.0%, one of the lowest broad rates in the South, and the cumulative view makes the size of that concession visible.

Step 7 -- Two months of cumulative pay. The schedule's first row shows $6,250.00 of cumulative gross against $4,726.46 of cumulative take-home. Row two doubles both: $12,500.00 gross, $9,452.92 take-home, with $3,047.08 accumulated on the deduction side.

Step 8 -- The full year. By month twelve the schedule reaches $75,000.00 of cumulative gross and $56,717.50 of cumulative take-home, adding $4,726.46 every month without variation.

Step 9 -- What the year actually withheld. The cumulative deduction column closes at $18,282.50. That column carries the $3,500 pre-tax 401(k) contribution alongside the tax, so tax alone is $18,282.50 - $3,500 = $14,782.50, an effective total tax rate of 19.71% on $75,000.00 of gross pay.

Step 10 -- Why the monthly increment never changes. The rows climb in equal steps, and it is worth knowing why. FICA is resolved annually -- 6.2% on wages up to the $184,500 Social Security base, 1.45% on everything, and 0.9% more above $200,000 filing single -- and that annual number is then apportioned evenly over twelve months. Nothing in the schedule steps down partway through the year. On a $75,000 salary nothing would step down in reality either; both thresholds sit far above this wage.

$56,717.50 reaches the account over twelve months. At 3.0% flat, Louisiana is a minor contributor to the $14,782.50 annual tax total.

The twelve rows under the calculator are a cumulative month-by-month view of one salary, so they cannot show what happens when the salary itself changes. That is where every bracket in this calculation actually lives, and it is worth walking directly.

At $69,900 of gross salary. After the $3,500 pre-tax deduction and the $16,100 standard deduction, federal taxable wage is $50,300, a hundred dollars inside the 12% band. Federal withholding is $222.62 per check, Louisiana withholding $76.62, and annual take-home $53,272.65.

At $70,100, two hundred dollars later. Federal taxable wage is $50,500, so a hundred dollars has crossed into the 22% band. Federal withholding rises to $223.92 per check and Louisiana withholding to $76.85, giving annual take-home of $53,417.35.

The $200 of extra salary produced $144.70 of extra take-home. The federal marginal rate nearly doubled across that point and the net effect on the pay packet is a few dollars, which is the whole answer to "will a raise push me into a higher bracket and cost me money". It cannot: only the dollars above the line are re-rated.

Marginal cost of the next unit, at the default salary. Going from $75,000 to $76,000 moves annual take-home from $56,717.50 to $57,391.00. A $1,000 raise is worth $673.50 in the account, so the combined federal, FICA and Louisiana wedge on the marginal dollar is 32.7%.

The reverse question, and the one lever on this page that moves real money. Raising the pre-tax deduction from $3,500 to $8,500 costs $5,000 of gross pay but only $3,750.00 of take-home: annual net falls from $56,717.50 to $52,967.50. The other $1,250.00 is tax that was never withheld, so the effective discount on that contribution is 25.00%. FICA is unaffected, because the engine assesses Social Security and Medicare on the full gross before the deduction is applied, exactly as a real payroll system does for a traditional 401(k).

Right column against wrong column. The schedule's third column is Cumulative Deductions, not cumulative tax, and the difference is the $3,500 pre-tax contribution that sits inside it. At month twelve it reads $75,000.00 less $56,717.50; subtract the $3,500 contribution and the tax withheld for the year is what remains. Treating that column as tax overstates the year's withholding by exactly $3,500 and misstates the effective rate by 4.67 points of gross pay.

What is not in any of these figures. No W-4 credits or extra withholding, no local tax of any kind, no employer-side payroll tax, and no post-tax deductions. Filing status is passed through to the state calculation. Louisiana applies a single flat rate to every filer, so the state line is identical whichever status you pick -- the reason is that Louisiana draws no distinction, not that the engine ignores the input. The selector does change federal withholding.

• Local municipal, city, or county wage taxes where applicable.
• Post-tax wage garnishments (child support, tax levies, student loans).
• Voluntary post-tax deductions (Roth 401k, charitable giving, supplemental insurance).

• Confusing Bi-Weekly with Semi-Monthly Pay: Bi-weekly pay results in 26 paychecks per year (two 3-paycheck months), whereas semi-monthly pay results in 24 equal paychecks.
• Failing to Update Form W-4: Inaccurate withholding allowances on Form W-4 can lead to substantial underpayment penalties or large unexpected tax bills.
• Forgetting Pre-Tax Deduction Benefits: Contributions to 401(k) and HSA accounts directly reduce taxable income, lowering both federal and state tax burdens.
• Overlooking Additional Medicare Tax: Failing to anticipate the 0.9% surtax on high-earning households with multiple income sources.
• Using an Outdated Louisiana Rate: Louisiana now taxes wages at a flat 3.00%, so older bracket schedules with higher top rates overstate the state withholding.

• Internal Revenue Service (IRS): Publication 15 (Circular E) and Publication 15-T (2026). irs.gov/publications/p15
• Social Security Administration (SSA): 2026 Social Security Wage Base Limit. ssa.gov
• Louisiana Department of Revenue: Employer Withholding Tax Tables (2026). revenue.louisiana.gov