Louisiana made national headlines in late 2024 when the legislature passed Act 11 (HB 10) in a special session, scrapping the state’s old graduated income tax system (which ranged from 1.85% to 4.25%) and replacing it with a flat 3% rate effective January 1, 2025. At the same time, Louisiana eliminated its unique allowance that let taxpayers deduct federal income taxes on their state return — a provision that existed virtually nowhere else in the country. The net effect: a dramatically simpler, broadly competitive income tax rate.
Louisiana’s other tax characteristics are equally distinctive. Property taxes are among the lowest in the nation, anchored by an extraordinarily generous homestead exemption that shields the first $75,000 of a primary residence’s market value (the first $7,500 of assessed value) from most property tax. On the other side of the ledger, Louisiana’s combined state and local sales tax rates are the highest in America on average. This guide walks through every major tax in Louisiana so you can understand what you actually owe.
For most of its modern history, Louisiana used a graduated income tax with rates that changed multiple times. The system in place until 2024 had three brackets: 1.85%, 3.5%, and 4.25%. It also contained a provision unique in the United States: Louisiana allowed taxpayers to deduct their federal income tax liability on their state return. This federal deductibility provision made the effective rate calculations complex and meant that higher-income earners — who paid more in federal taxes — received a larger Louisiana deduction.
In its late-2024 special session, the legislature passed Act 11 (HB 10), replacing the entire graduated system with a flat 3% rate effective January 1, 2025. Simultaneously, the legislature eliminated federal income tax deductibility. The result is a cleaner, more competitive system that is easier for both taxpayers and employers to administer.
Louisiana uses federal adjusted gross income (AGI) as its starting point for state tax calculations, with Louisiana-specific modifications. The flat 3% rate applies to all taxable income after the standard deduction and any applicable exemptions. Louisiana’s standard deduction is $12,875 for single filers in 2026 ($12,500 in 2025; $25,000 for married filing jointly in 2025) — lower than the federal standard deduction, so many taxpayers will have a higher Louisiana taxable income than they might expect relative to their federal return.
| Annual Income | Louisiana (3% flat) | Mississippi (4% flat above $10K) | Arkansas (graduated, top 3.7%) | Texas (0%) |
|---|---|---|---|---|
| $50,000 | ~$1,114 | ~$1,268 | ~$1,392 | $0 |
| $100,000 | ~$2,614 | ~$3,268 | ~$3,519 | $0 |
| $200,000 | ~$5,614 | ~$7,268 | ~$7,227 | $0 |
| $500,000 | ~$14,614 | ~$19,268 | ~$18,327 | $0 |
Estimates reflect each state's own standard deduction/exemption structure (Louisiana: $12,875 single deduction; Mississippi: $2,300 standard deduction plus $6,000 personal exemption; Arkansas: $2,470 standard deduction with graduated brackets). Actual amounts vary based on filing status and other state-specific modifications to federal AGI.
Under the old system, a Louisiana single filer who paid $15,000 in federal income taxes could deduct that $15,000 from their Louisiana taxable income. This created a meaningful reduction in state tax for middle and higher earners. The 2024 reform eliminated this provision entirely. Higher-income earners who previously benefited from large federal tax deductions may find their Louisiana tax bill increases somewhat compared to the old system — but the flat 3% rate (vs. the old 4.25% top rate) partially offsets this for higher earners.
Louisiana’s effective property tax rate of approximately 0.55% of market value places it among the lower-burden states in the country (Tax Foundation 2026 county data shows Louisiana predominantly under 0.50%). For homeowners, this is one of Louisiana’s most financially compelling features.
Louisiana’s homestead exemption is exceptional by national standards. Louisiana law exempts the first $75,000 of a primary residence’s market value (the first $7,500 of assessed value) from parish (county) and city property taxes, including school district millages. The only levies that apply below the $75,000 threshold are certain special assessments (such as drainage or sewerage districts).
To illustrate: if you own a home in New Orleans with a market value of $200,000, the homestead exemption removes the first $75,000, and you pay property tax only on the remaining $125,000. For modest homes, this can dramatically reduce or even eliminate the property tax bill. The exemption is available only on a primary residence and must be applied for through the parish assessor’s office.
Louisiana assesses residential property at 10% of fair market value for homestead-eligible properties (with the homestead exemption applied to the assessed value). Non-homestead residential and commercial property is assessed at 10% as well, but without the homestead benefit. The millage rate (tax per $1,000 of assessed value) then applies to the assessed value after exemptions. Parish assessors conduct reassessments on a four-year cycle.
Louisiana’s state sales tax rate is 5% (raised from 4.45% on January 1, 2025, scheduled to fall to 4.75% after 2029). Louisiana’s parishes and municipalities are permitted to levy their own sales taxes on top of the state rate, and many do so aggressively. The result is that Louisiana has the highest average combined state and local sales tax rate in the country, about 10.13% in mid-2026 per the Tax Foundation. Local rates vary by parish and city, so check the combined rate for your exact address.
Louisiana’s sales tax applies to most tangible personal property and many services. Groceries (food for home consumption) are exempt from the state sales tax, although parish and city taxes may still apply to them. Prescription drugs are exempt from state sales tax.
Louisiana treats retirement income favorably in several categories:
For retirees whose income consists primarily of Social Security and a government pension, Louisiana’s 3% flat tax may result in very little or no Louisiana income tax.
| State | Income Tax | SS Exempt? | Avg Property Tax | Avg Sales Tax |
|---|---|---|---|---|
| Louisiana | 3% flat | Yes | ~0.55% | ~10.1% combined |
| Mississippi | 4% flat (above $10K) | Yes | ~0.58% | ~7.1% |
| Arkansas | Graduated, top 3.7% | Yes | ~0.62% | ~9.5% |
| Texas | None | N/A | ~1.40% | ~8.2% |
Louisiana’s low property tax and flat 3% income tax make it genuinely competitive for retirees with government pensions or Social Security as their main income source — provided they can tolerate high sales taxes and the associated cost on daily spending.
Louisiana has no state estate tax and no inheritance tax. Assets passed to heirs at death are not subject to any Louisiana-level transfer tax. The federal estate tax may apply for very large estates (those exceeding the federal exemption, $15 million per individual in 2026), but Louisiana itself imposes no additional state-level estate or inheritance levy.
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A Louisiana CPA can help you navigate the new flat 3% tax system, maximize the homestead exemption, and determine whether your retirement income qualifies for exemption.
âš Not for simple single-state returns. Free filing is fine for straightforward W-2 situations.
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