# How much is Louisiana income tax?

Estimates 2026 Louisiana income tax from federal AGI, filing status, and dependents.

- Page: https://www.acalculator.org/finance/louisiana-income-tax-calculator
- JSON spec: https://www.acalculator.org/finance/louisiana-income-tax-calculator.json
- Version: 5fee192080f6

## Default answer

Example with the default inputs (Filing status Single, Federal adjusted gross income $75,000.00, Dependents 0): On $75,000.00 of AGI, filing Single, Louisiana income tax is $1,863.75 (2.49% effective).

## Inputs

| Key | Label | Description |
| --- | --- | --- |
| status | Filing status | Your federal filing status. |
| income | Federal adjusted gross income | Your federal AGI (Form 1040 line 11). |
| deps | Dependents | Dependents you claim, not yourself or your spouse. |

## Outputs

| Key | Label | Description |
| --- | --- | --- |
| total | Louisiana income tax | State tax after credits, plus any local tax. |
| stateTax | State income tax | State tax after credits. |
| effectiveRate | Effective rate | Tax as a percent of AGI. |
| marginalRate | State marginal rate | State rate on the next dollar. |
| taxableIncome | State taxable income | AGI less deduction and exemptions. |
| deduction | Deduction | Standard or itemized, whichever is larger. |
| exemptions | Exemptions | Personal and dependent exemptions. |
| credits | Credits | State credits used. |

## Method

Taxable income = AGI − larger of standard or itemized deduction − exemptions; tax = state rates on taxable income − credits.

## Assumptions

- An estimate for a full-year resident, 2026 rates, not tax advice.
- Starts from federal AGI; Louisiana additions and subtractions are not modelled.
- Not modelled for Louisiana: LDR says the 2026 return amounts may differ slightly after the January 2026 CPI data. No itemized deductions: IT-540 adds only the excess federal medical deduction to the standard deduction; that item is not modelled (2025 IT-540 instructions).
- Not modelled: part-year and nonresident returns, other state credits, and state AMT.

## Worked examples

1. status = single, income = $50,000.00, deps = 0 gives taxableIncome = $37,125.00, stateTax = $1,113.75, total = $1,113.75. Source: Louisiana Register Vol. 52 No. 2 (February 20, 2026), withholding tables notice (2026 standard deduction), https://dam.ldr.la.gov/lawspolicies/NOI-Withholding%20Tables%20LAC%2061.I.1501.pdf (worked from it at AGI $50,000, single).
2. status = mfj, income = $100,000.00, deps = 2 gives taxableIncome = $74,250.00, stateTax = $2,227.50, total = $2,227.50.
3. status = hoh, income = $200,000.00, deps = 1 gives taxableIncome = $174,250.00, stateTax = $5,227.50, total = $5,227.50.
4. status = hoh, income = $125,750.00, deps = 0 gives stateTax = $3,000.00.

## FAQ

### What is the Louisiana income tax rate?

Louisiana taxes income at a flat 3%. For a single filer the schedule is 3% above $0 of taxable income. These are the 2026 rates.

### How is Louisiana income tax calculated?

Start from federal adjusted gross income. Subtract the larger of the Louisiana standard deduction and your itemized deductions, then the exemptions. Apply the rates to what is left and subtract any credits. The standard deduction is $12,875 single, $25,750 married filing jointly, $12,875 separately, and $25,750 head of household. The model has no exemptions or credits for this state.

### Does Louisiana have a local income tax?

This page has no local income tax for Louisiana; if your city or county has one, add it yourself.

### What does this Louisiana calculator leave out?

LDR says the 2026 return amounts may differ slightly after the January 2026 CPI data. No itemized deductions: IT-540 adds only the excess federal medical deduction to the standard deduction; that item is not modelled (2025 IT-540 instructions). It also leaves out state additions and subtractions to federal AGI (such as retirement or Social Security exclusions), part-year and nonresident returns, and credits such as child care, earned income, and tax paid to another state.

### Which tax year do the Louisiana rates cover?

Tax year 2026, the return you file in 2027. They come from Louisiana Register Vol. 52 No. 2 (February 20.

### Which states have no income tax on wages?

Alaska, Florida, Nevada, New Hampshire, South Dakota, Tennessee, Texas, Washington, and Wyoming. They have no page of their own, because there is no wage income tax to work out; the state income tax calculator answers 0 for them. Federal income tax and Social Security and Medicare still apply.

### Is this the same as my paycheck withholding?

No. This is the tax for the whole year on your return. Your employer withholds by the state's own withholding formula, so your refund or balance due is the difference between the two.

## Sources

- Louisiana Register Vol. 52 No. 2 (February 20, 2026), withholding tables notice (2026 standard deduction), https://dam.ldr.la.gov/lawspolicies/NOI-Withholding%20Tables%20LAC%2061.I.1501.pdf; LDR FAQ (flat 3%), https://revenue.louisiana.gov/tax-education-and-faqs/faqs/income-tax-reform/what-are-the-individual-income-tax-rates-and-brackets/