Louisiana underwent a major tax reform at the start of 2025, and as someone who has worked with self-employed professionals in New Orleans, Baton Rouge, and across the Pelican State, I can tell you this is one of the most significant changes in recent memory. Louisiana replaced its graduated income tax with a flat 3% rate, making it one of the lowest income tax states in the country.
Self Employment Tax Calculator
What Is Self-Employment Tax in Louisiana?
Self-employment tax is the federal tax at 15.3% of net earnings. Social Security is 12.4% on earnings up to $176,100 for 2025 and $184,500 for 2026. Medicare is 2.9% on all income, plus 0.9% above $200,000/$250,000. Deduct 7.65% from AGI. Schedule SE required once net earnings reach $400.
Louisiana State Income Tax for the Self-Employed
Effective January 1, 2025, Louisiana has a flat 3% income tax rate, replacing graduated brackets of 1.85%-4.25%. The standard deduction is now $12,500 (single) and $25,000 (joint), up from $4,500 and $9,000. No separate state self-employment tax or local income taxes.
How to File Self-Employment Taxes in Louisiana
File Schedule C and Schedule SE with Form 1040. For Louisiana, file Form IT-540. The state deadline is May 15, later than the federal April 15.
Quarterly Estimated Tax Payments in Louisiana
Estimated payments required if you expect to owe $1,000 or more. Due dates: April 15, June 15, September 15, January 15.
Tax Deductions and Credits
Deduct 50% of SE tax, home office ($5/sq ft max $1,500), health insurance, retirement contributions (SEP-IRA up to 25%, Solo 401(k)), business expenses, and vehicle mileage at 70 cents/mile for 2025.
Avoiding Common Pitfalls
Different Filing Deadline
Louisiana returns are due May 15, not April 15.
Higher Sales Tax
The state sales tax increased to 5.0% as part of the reform. Account for this if you sell taxable goods.
Final Thoughts
Louisiana’s flat 3% rate and increased standard deduction make it very favorable for self-employed workers. Stay current on estimated payments and maximize deductions.
Frequently Asked Questions
What is Louisiana’s income tax rate for 2025?
A flat 3%, replacing the previous 1.85%-4.25% graduated system.
What is self-employment tax in Louisiana?
Federal tax at 15.3%. Louisiana has no separate state self-employment tax.
When is Louisiana’s tax return due?
May 15, one month after the federal deadline.
What deductions can I claim?
50% of SE tax, health insurance, home office, retirement contributions, business expenses, and vehicle mileage.
