Taxes in Gretna
Gretna's tax picture combines Jefferson Parish's own moderate property-tax rate with Louisiana's real, statewide flat income tax and nation-highest sales tax.
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Learn moreJefferson Parish's genuinely moderate property tax
Gretna shares Jefferson Parish's own overall effective property tax rate of approximately 0.52%, with a parish-wide median annual payment of approximately $1,312 on a $251,400 home -- confirm Gretna's own specific municipal millage directly, given its status as the parish seat.
Louisiana's real, statewide flat 3% income tax
Louisiana's flat 3% individual income tax (effective January 1, 2025, replacing a 1.85%-4.25% graduated structure) applies identically in Gretna as elsewhere in the state.
A real, honest trade-off: the nation's highest sales tax
Louisiana's average combined state-and-local sales tax rate ran a real, current 10.11% (Tax Foundation, 2026) -- the single highest of any US state, applying in Gretna as elsewhere.
Key takeaways
- Jefferson Parish's own effective property tax rate (~0.52%) applies in Gretna, the parish's own seat.
- Louisiana's flat 3% state income tax applies statewide, including in Gretna.
- Louisiana's 10.11% average combined sales tax rate is a real, honest trade-off funding the income-tax cut.
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