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Sales tax in St. Martin Parish, Louisiana

By Brent Chudoba, editor Updated

There is no single sales tax rate in St. Martin Parish. It runs from 8.5% to 11% depending on the exact address, because cities and special districts inside the county levy their own on top of the 5% state rate. The 5% state rate applies everywhere in the county; everything above that depends on where you are standing. These rates were read from Louisiana's own published schedule and checked on September 9, 2026.

What is the sales tax rate in St. Martin Parish?

Sales tax rate components in St. Martin Parish, Louisiana
Louisiana state rate5%
Local tax applying countywide0.5%
Lowest combined rate in the county8.5%
Highest combined rate in the county11%

The combined figures are the lowest and highest totals anywhere in St. Martin Parish, so the rows above do not add up to them.

How much sales tax is that on a purchase in St. Martin Parish?

At 8.5%, a $100 purchase carries $8.50 in sales tax and a $1,000 purchase $85.00, at the lowest rate in the county. At the highest, 11%, the same purchases carry $11.00 and $110.00. That is general merchandise; Louisiana taxes some categories, often groceries, differently, as the note below explains.

Among Louisiana's 63 counties, St. Martin Parish's lowest rate ranks 53rd highest, level with 5 other counties. See every Louisiana county.

Sales tax in counties next to St. Martin Parish

St. Martin Parish borders 7 counties.

St. Martin Parish and its neighbors, highest rate first
CountyCombined sales tax
Iberville Parish, LA10.25% to 12.916%
Assumption Parish, LA10% to 10.5%
St. Mary Parish, LA9.45% to 10.45%
Iberia Parish, LA9.25% to 11.25%
Pointe Coupee Parish, LA9.25% to 10.25%
Lafayette Parish, LA9% to 11%
St. Landry Parish, LA8.55% to 12.55%
St. Martin Parish, LA (this county)8.5% to 11%

Why the rate here is not the whole story

Louisiana charges 5 percent statewide, and every local sales tax is levied and collected locally rather than by the state, by the parish school board, the parish governing authority, the sheriff's law enforcement district, municipalities and economic development districts, so the parish line is not the tax boundary. 0.5 percent applies everywhere in the parish, levied by the law enforcement district at 0.5 percent. No one rate covers the whole parish: the floor of 8.5 percent is at Arnaudville and the ceiling of 11 percent is at St. Martinville North Annex. That ceiling applies only inside a single development or annexation district rather than across a whole town, so it must not be read as the rate for the surrounding area.

How do I find the exact rate for an address in St. Martin Parish?

Use Louisiana's own address lookup. In St. Martin Parish the rate depends on the address, anywhere from 8.5% to 11%.

Who has to collect sales tax in St. Martin Parish?

Any seller with a physical presence in Louisiana collects at the rate for the address of the sale; a remote seller does once it passes Louisiana's economic nexus threshold. Louisiana sales tax covers the statewide rules and what is exempt.

Work out your own numbers

Sources