How much is Louisiana income tax?
Louisiana income tax at 3 levels of Louisiana taxable income — what is left after Louisiana's own deductions and exemptions. Local income taxes are not included.
| Taxable income | Single | Married filing jointly |
|---|---|---|
| $50,000 | $1,5003.0% effective · 3% marginal | $1,5003.0% effective · 3% marginal |
| $100,000 | $3,0003.0% effective · 3% marginal | $3,0003.0% effective · 3% marginal |
| $250,000 | $7,5003.0% effective · 3% marginal | $7,5003.0% effective · 3% marginal |
What is Louisiana's income tax rate for 2026?
| Taxable income | Rate |
|---|---|
| All taxable income | 3% |
Source: La. R.S. 47:32 · LDR income-tax-reform FAQ, checked September 11, 2026.
Can you deduct Louisiana income tax on your federal return?
The federal deduction for state and local taxes (SALT) is capped at $40,400 for 2026 — $20,200 if married filing separately — and the cap shrinks toward $10,000 once modified AGI passes $505,000. A single filer with $250,000 of Louisiana taxable income owes about $7,500 in Louisiana income tax — 19% of that cap before any property tax.
SALT cap workaroundsDoes Louisiana have a pass-through entity tax (PTET)?
Yes. A partnership or S corporation can elect to pay Louisiana income tax at the entity level. The business deducts it federally, so that state tax is not limited by the SALT cap, and the owners claim a Louisiana credit or exclusion for it. Deductsy's plan treats March 15 as the Louisiana election or first-payment deadline; it is approximate, so confirm it with Louisiana before relying on it.
PTET savings calculatorWhen are Louisiana estimated tax payments due?
Louisiana estimated tax is due April 15, June 15, September 15 and January 15 of the following year, in 4 equal instalments. Those are the same dates as the federal schedule. Source: IT-540ESi (2026), Declaration of Estimated Tax for Individuals — General Information and Instructions.
Safe-harbor calculatorWhat is the penalty for underpaying Louisiana estimated tax?
Louisiana charges 12% a year on an underpaid instalment. Paying at least 100% of this year's tax or 100% of last year's on time avoids it. Source: IT-540ESi (2026), Declaration of Estimated Tax for Individuals — General Information and Instructions.
Are HSA contributions deductible in Louisiana?
Yes. Louisiana follows the federal treatment, so an HSA contribution — up to $4,400 with self-only coverage or $8,750 with family coverage for 2026 — lowers Louisiana taxable income as well as federal.
Does Louisiana give a tax break for 529 plan contributions?
Yes. Louisiana lets you deduct up to $2,400 a year of contributions to Louisiana's own 529 plan ($4,800 on a joint return). Income limits, per-beneficiary caps and carryforwards differ by state, so check the plan's rules.
529 plan tax savings calculatorWhat is the property tax rate in Louisiana?
Louisiana's average effective property tax rate is 0.55% — tied for the 39th highest of 51 jurisdictions and 61% of the national average of 0.9%. That is about $550 a year for every $100,000 of home value; the rate varies widely by county and school district.
Itemize or take the standard deduction?How much does an LLC cost to keep in Louisiana each year?
Deductsy budgets about $35 a year for a Louisiana LLC — the annual report fee or minimum franchise tax, with a fee due every two years counted at half. Fees change, so confirm with Louisiana's business filing office.
Louisiana S-corp tax calculatorHow do Louisiana taxes compare with neighboring states?
| State | Top income tax rate | Income tax on $100,000 (single) | Property tax (avg) |
|---|---|---|---|
| Louisiana | 3% | $3,000 | 0.55% |
| Arkansas | 3.7% | $3,620 | 0.55% |
| Mississippi | 4% | $3,600 | 0.72% |
| Texas | None | $0 | 1.49% |
On $100,000 of taxable income a single filer's Louisiana income tax is $3,000 — more than in 1 of 3 neighboring states. The lowest is Texas at $0; the highest is Arkansas at $3,620. Louisiana's average property tax rate is higher than in none of the 3.
Income tax is each state's own tax on the same state taxable income; local income taxes are not included.
More Louisiana tax notes
- Louisiana replaced its graduated brackets with a single flat rate from 2025.
Tax moves that matter most for Louisiana
If you own an S corporation, partnership or multi-member LLC, Louisiana's PTET election moves the Louisiana income tax on that profit to the business, where it is deductible federally and outside the SALT cap.
An S-corp election can cut self-employment tax once profit is large enough to pay yourself a reasonable salary and still cover payroll and filing costs. The Louisiana calculator adds Louisiana's own entity fees and taxes to that breakeven.
With 1099 income, a Solo 401(k) can take up to $72,000 a year (2026) — usually more than a SEP-IRA at the same income. Contributions lower both federal and Louisiana income tax.
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