Louisiana Capital Gain Exclusion: Transition Rule and Current Taxation

The Louisiana capital gains exclusion was repealed effective January 1, 2025. For any sale of a Louisiana business closing on or after that date, the gain flows into your state taxable income and is taxed at the new flat 3% rate, with no special deduction. A narrow transition rule preserves the old deduction for sales where the purchase agreement was fully executed and every contractual condition was satisfied before January 1, 2025.¹

What the Deduction Used to Do

Under the now-repealed R.S. 47:293(9)(a)(xvii), Louisiana allowed a deduction for net capital gains from selling an equity interest in, or substantially all the assets of, a nonpublicly traded business commercially domiciled in the state. The taxpayer had to have owned the interest for at least five years, and the business itself had to have been domiciled in Louisiana for at least five years.²

The excluded percentage ran on a sliding scale keyed to how long the business had been domiciled in Louisiana, starting at 50% for five to nine years and reaching 100% at thirty years or more.³ Publicly traded companies were never eligible.

Act 11 of the 2024 Third Extraordinary Session eliminated the deduction along with several other individual income tax deductions as part of the shift to a flat rate.⁴ The subsection now reads only “Repealed by Acts 2024, 3rd Ex. Sess., No. 11, §4, eff. Dec. 4, 2024.”⁵

The Transition Rule for Pre-2025 Sales

The Louisiana Department of Revenue has confirmed one exception to the repeal. If the purchase agreement was executed by all parties and every condition contractually required to complete the sale was satisfied before January 1, 2025, the deduction remains available even if the actual closing occurred later.¹

A signed letter of intent will not qualify. Neither will a deal that still had unfulfilled contingencies on January 1, 2025. Installment sales that were perfected before that date also remain eligible; the 2025 Louisiana Individual Income Tax instructions limit deduction code 20E to “installment and perfected sales prior to January 1, 2025.”⁶

If you are relying on this rule, keep the executed agreement, evidence that every contingency was cleared by the cutoff, and the closing documents together in one file. The Department reviews these claims closely.

How Louisiana Taxes Business-Sale Gains Now

Starting with tax year 2025, Louisiana taxes all income, including capital gains, at a flat 3% rate.⁷ There is no state-level distinction between short-term and long-term gains. Whatever gain you report on your federal return flows into your Louisiana return and is taxed at 3%.

The practical effect depends on whether you would have qualified for the old deduction. A taxpayer who could have excluded 50% of a $500,000 gain under the prior 4.25% top rate paid nothing on the excluded portion; the same gain now produces $15,000 in Louisiana tax. For taxpayers whose gains never qualified, because the business was publicly traded, the holding period was too short, or the business was not Louisiana-domiciled, the flat 3% rate is generally lower than what they paid before.

Federal Rules Are Unchanged

The repeal is a state matter only. The IRS continues to tax long-term capital gains on assets held more than one year at preferential rates. For tax year 2025:

0% on taxable income up to $48,350 (single) or $96,700 (married filing jointly)
15% from $48,351 to $533,400 (single) or $96,701 to $600,050 (joint)
20% above $533,400 (single) or $600,050 (joint)

Short-term gains on assets held one year or less are taxed at ordinary federal rates, which can reach 37%. High-income taxpayers may also owe the 3.8% net investment income tax. The old Louisiana exclusion never reduced federal liability, and its repeal does not change anything on the federal side.

Section 1202 Small Business Stock

The federal exclusion under IRC Section 1202 remains fully in effect and, for eligible taxpayers, can be more valuable than Louisiana’s old deduction ever was. A non-corporate taxpayer can exclude up to 100% of the gain from selling qualified small business stock held for more than five years, on the federal side only.⁸ The core requirements:

Only C corporation stock qualifies. Partnerships and LLCs, the most common Louisiana structures, are ineligible unless they elect C-corp taxation.
The corporation’s aggregate gross assets cannot exceed $75 million at any time before and immediately after the stock issuance.⁸
At least 80% of the corporation’s assets must be used in an active qualified trade or business.⁹
The stock must be held more than five years.

Before the 2024 repeal, some Louisiana C-corp shareholders stacked Section 1202 federally with the state deduction. The federal side still works. The state side does not.

Documentation for Transition and Amended Claims

If you are claiming the deduction on a transition-eligible sale or amending a prior-year return, Louisiana Administrative Code Title 61, Section I-1312 requires all of the following at the time you file:¹⁰

Form R-6180, the Net Capital Gains Deduction Worksheet³
The K-1 from the entity that generated the gain
A complete copy of your federal Form 1040, including Schedule D and all supporting schedules
Proof of when you acquired the equity interest: articles of incorporation or organization, acts of sale, or donative instruments
Evidence of commercial domicile: where assets were held, where management decisions were made, and where day-to-day operations were directed

Missing documentation does more than slow a refund. It suspends the accrual of interest on your refund for the entire period the documentation is outstanding.

Penalties for Claims That Do Not Qualify

Claiming the deduction on a sale that closed after January 1, 2025, without meeting the transition rule, creates an underpayment. The IRS imposes a 20% accuracy-related penalty on any substantial understatement of income tax at the federal level, and Louisiana imposes its own parallel penalties for state underpayments.¹¹ Interest accrues on any balance due; the federal underpayment rate was 7% for the first quarter of 2026 and 6% for the second quarter.¹²

Attempting to back-date a sale or fabricate pre-2025 contractual terms carries larger risk. A gross valuation misstatement doubles the federal accuracy-related penalty to 40%.¹¹ On valuation questions, the burden of proof shifts to the taxpayer unless the taxpayer maintained adequate records, substantiated every item, and cooperated with information requests.¹³

For anyone who missed the December 31, 2024 cutoff, the state-side levers are gone. Federal tools remain: installment reporting to spread the gain across tax years, Opportunity Zone deferrals, and, for C-corporation shareholders, the Section 1202 exclusion of up to $10 million in gain or ten times basis, whichever is greater.

1
Louisiana Department of Revenue. Can I Claim the Net Capital Gains Deduction for Sales Occurring on or After January 1, 2025
2
Louisiana Legislature. House Bill No. 485
3
Louisiana Department of Revenue. Net Capital Gains Deduction Worksheet
4
Louisiana Department of Revenue. 2024 Third Extraordinary Session Legislative Summaries
5
Louisiana State Legislature. RS 47-293 – Louisiana Laws
6
Louisiana Department of Revenue. Louisiana 2025 Individual Income Tax Instructions
7
Louisiana State Legislature. Louisiana Revised Statutes 47-32 – Rates of Tax
8
Office of the Law Revision Counsel. 26 U.S. Code 1202 – Partial Exclusion for Gain From Certain Small Business Stock
9
Treasury.gov. Quantifying the 100% Exclusion of Capital Gains on Small Business Stock
10
Cornell Law School. La. Admin. Code tit. 61, I-1312 – Net Capital Gains Deduction
11
Office of the Law Revision Counsel. 26 U.S. Code 6662 – Imposition of Accuracy-Related Penalty on Underpayments
12
Internal Revenue Service. Quarterly Interest Rates
13
Office of the Law Revision Counsel. 26 U.S. Code 7491 – Burden of Proof