Louisiana 529 Plan Tax Deduction: Limits, Carry-Forward, and Recapture

The Louisiana 529 plan tax deduction lets you subtract up to $2,400 per account per year ($4,800 per beneficiary if you’re married filing jointly) from your Louisiana taxable income for contributions to the state’s START Saving Program. At Louisiana’s flat 3% income tax rate, that works out to $72 to $144 in direct state tax savings per account each year.¹ Modest on its own, but the deduction multiplies across children, rolls forward if you don’t use it, and pairs with a state matching grant worth as much as 14% of your deposits.

Who Can Claim the Deduction

Anyone who files a Louisiana income tax return and contributes to a START account can claim the deduction. The person making the deposit takes the tax benefit, whether that’s a parent, grandparent, other relative, or a corporation. The account owner or the beneficiary must have been a Louisiana resident when the account was opened, though continued residency isn’t strictly required to keep the account going.²

One boundary matters here: contributions to a 529 plan sponsored by another state do not qualify. Louisiana is not a tax-parity state, so the deduction only follows deposits into the Louisiana-sponsored START program. If you’re already contributing to an out-of-state plan, you’d need to open a Louisiana START account to capture this benefit.

Annual Deduction Limits

The cap depends on filing status:

Single, head of household, or married filing separately: up to $2,400 per account per year.
Married filing jointly: up to $4,800 per beneficiary per year.

Because each START account has one beneficiary, the limits effectively multiply by the number of children or other beneficiaries you’re saving for. A married couple with three children in three separate accounts can deduct up to $14,400 in a single tax year.³

Contributions must be deposited by December 31 of the tax year to count toward that year’s deduction.⁴ There’s also a lifetime contribution ceiling of $500,000 per beneficiary across all combined accounts, which most families won’t approach but is worth knowing when multiple relatives are chipping in.

How the Carry-Forward Works

Unused deduction room rolls forward to future years indefinitely. Say you’re a single filer who deposits $1,500 this year. You’ve used $1,500 of the $2,400 cap, and the leftover $900 carries into next year, giving you an effective ceiling of $3,300 that year ($2,400 fresh cap plus $900 carried).³

It only runs one direction. Contributions that exceed the annual cap don’t create a deduction in later years. A single filer who deposits $3,500 deducts $2,400 and loses the extra $1,100 for deduction purposes forever. Unused room carries; excess dollars don’t.

What the Deduction Actually Saves You

Louisiana replaced its graduated brackets with a flat 3% rate starting in the 2025 tax year, so the arithmetic is clean:

$2,400 deduction (single filer, one account): $72 in annual state tax savings.
$4,800 deduction (joint filer, one beneficiary): $144 in annual state tax savings.
$14,400 deduction (joint filer, three beneficiaries): $432 in annual state tax savings.

Those figures are the thinnest layer of the value in a START account. Federal tax-free growth on earnings and the state matching grant do more of the heavy lifting. The deduction is best understood as free money for contributions you were going to make anyway.

The Earnings Enhancement Match

Louisiana matches a percentage of your annual START deposits through a program called Earnings Enhancements. The match rate is tied to the account owner’s federal adjusted gross income from the prior tax year:³

$0 to $29,999 AGI: 14% match
$30,000 to $44,999: 12% match
$45,000 to $59,999: 9% match
$60,000 to $74,999: 6% match
$75,000 to $99,999: 4% match
$100,000 and above: 2% match

Without documentation of your AGI, the program defaults to 2%. Enhancements are posted as of December 31 each year.² Even at the 2% floor, this is a guaranteed return that sits on top of the deduction and any investment gains. One catch: if you roll your funds to an out-of-state 529 later, you forfeit all Earnings Enhancements and the interest they earned.

The START K12 Deduction Is Separate

Louisiana runs a separate program, START K12, for elementary and secondary school tuition. It has its own deduction with lower limits:

Single filers: up to $1,200 per beneficiary per year.
Joint filers: up to $2,400 per beneficiary per year.

The K12 deduction is authorized under Louisiana R.S. 47:293(9)(a)(xxv). You can claim it in addition to the main START deduction if you contribute to both programs, but you can’t claim another education-related state deduction for the same dollars you put into a K12 account.⁵ Qualified K12 withdrawals are capped at $10,000 per year and limited to tuition at Louisiana elementary or secondary schools.⁴

Claiming It on Your Return

You claim the deduction on Louisiana Form IT-540 (Resident Individual Income Tax Return) as a subtraction from income, listed as the START Savings Program Contribution. Most tax software presents it as a selectable option during return prep.⁶ You don’t need to attach documentation from START, but keep your contribution records in case of an audit. Account statements from the program work for that purpose.

Non-Qualified Withdrawals Trigger Recapture

Pull money out of a START account for anything other than qualified education expenses, and Louisiana adds the previously deducted contributions back to your taxable income. This recapture applies to the principal portion of the non-qualified withdrawal that you originally deducted, and it appears as additional income on the state return for the year of the withdrawal.⁷

The earnings portion gets hit from both directions. It’s subject to Louisiana state income tax and federal income tax, plus a 10% federal penalty on the earnings. State recapture and the federal penalty operate independently, so a non-qualified withdrawal creates consequences on both returns.

Rollovers Don’t Trigger Recapture

Rolling funds from a Louisiana START account to another 529 plan follows federal tax-free treatment, and Louisiana does not treat it as a distribution for recapture purposes.⁴ The cost of leaving is the Earnings Enhancement forfeiture mentioned above. For accounts that received 9% to 14% annual matches over many years, that forfeiture can outweigh the reason for switching plans.

529-to-Roth IRA Rollovers

Starting in 2024, federal law allows unused 529 funds to roll into a Roth IRA for the beneficiary, under several conditions:⁸

The 529 account must have been open for at least 15 years.
The 529 beneficiary and the Roth IRA owner must be the same person.
The rollover in any year can’t exceed that year’s Roth IRA contribution limit, reduced by any other IRA contributions the beneficiary made.
Total 529-to-Roth rollovers cannot exceed $35,000 per beneficiary across all years.
Contributions made within the last five years, and their earnings, aren’t eligible.

This gives families an escape valve when a beneficiary received scholarships, went to a cheaper school, or otherwise didn’t need everything saved. It also softens the risk of overfunding, since excess dollars can eventually become retirement savings for the same person.

1
Louisiana Department of Revenue. Individual Income Tax
2
Louisiana’s Student Tuition Assistance & Revenue Trust. START Benefits
3
Louisiana’s Student Tuition Assistance & Revenue Trust. START Frequently Asked Questions
4
Louisiana’s Student Tuition Assistance & Revenue Trust. Louisiana’s Student Tuition Assistance and Revenue Trust
5
Louisiana Department of Revenue. Revenue Information Bulletin 22-016 – Income Exemption and Carryforward Provisions of the START K12 Program
6
Louisiana Department of Revenue. IT-540 Individual Income Tax Return Instructions
7
FindLaw. Louisiana Revised Statutes Title 47, Section 293
8
Office of the Law Revision Counsel. 26 USC 529 – Qualified Tuition Programs