La. Const. Art. VII § 18

Louisiana Real Estate Calculators

Louisiana's uniquely-low 10% residential assessment ratio (lowest in the US), the Art. VII § 20 $75,000 homestead exemption with Orleans-Parish municipal carve-out, and the Art. VII § 18(F) special-assessment-level freeze for seniors and disabled veterans.

Anchored to: La. Const. Art. VII §§ 18, 20; La. R.S. §§ 47:1701-1851

1 calculator live. Reviewed against current statute and regulation. Last updated 2026-05-16.

Most-used calculators

La. Const. Art. VII § 18 (10% residential / 15% non-homestead improvement / 25% public service assessment ratios)

Louisiana Property Tax Calculator

Compute a Louisiana property's annual ad valorem tax under La. Const. Art. VII §§ 18–20 and La. R.S. 47:1701–1851. Models the 10% residential assessment ratio (lowest of any U.S. state), the 15% non-homestead improvement ratio, the 25% public-service ratio, the $75,000 fair-market-value homestead exemption against parish ad valorem millage (Art. VII § 20), the Orleans Parish municipal-millage carve-out (Art. VII § 20(A)(2) — the only parish where the homestead exemption does NOT reach municipal tax), the school-maintenance and special-district carve-outs, and the Art. VII § 18(F) special assessment level freeze for owners 65+, 50%+ disabled veterans, or the totally and permanently disabled.

Find your calculator

Grouped by who tends to use each tool. Many calculators serve more than one audience.

For unit owners

Verify a notice, check a fine, or understand the lien exposure on a delinquent account before acting.

Louisiana Property Tax Calculator
Compute a Louisiana property's annual ad valorem tax under La. Const. Art. VII §§ 18–20 and La. R.S. 47:1701–1851. Models the 10% residential assessment ratio (lowest of any U.S. state), the 15% non-homestead improvement ratio, the 25% public-service ratio, the $75,000 fair-market-value homestead exemption against parish ad valorem millage (Art. VII § 20), the Orleans Parish municipal-millage carve-out (Art. VII § 20(A)(2) — the only parish where the homestead exemption does NOT reach municipal tax), the school-maintenance and special-district carve-outs, and the Art. VII § 18(F) special assessment level freeze for owners 65+, 50%+ disabled veterans, or the totally and permanently disabled.

100+

Calculators live

Across statute, regulation, and policy

100%

Statute-cited

Every formula links its source

4,000+

Unit tests

Every formula has a regression suite

Open

Formula transparency

Deterministic math, no hidden weights

Free

Ad-supported

No paid tier, no paywall

How these calculators are maintained

Every YMYL calculator is reviewed quarterly and after every legislative session in the jurisdiction it covers. Citations are link-validated monthly against the relevant statute and regulation websites. The methodology page documents the discipline.

Read the editorial methodology →