Harrison County, home to Gulfport and 205k Mississippians, operates under Mississippi\'s constitutional 5-class property tax system. Class I (single-family owner-occupied residential) is assessed at 10% of fair market value (Class II non-residential at 15%, Class III utility at 30%). Tax = AV × millage / 1,000. Combined millage includes county, municipal, school district, and special district levies. The Homestead Exemption operates in two tiers: Tier 1 (under-65) provides a tax credit up to $300/year; Tier 2 (65+ OR totally disabled) exempts the first $7,500 of AV (= $75,000 FMV) from ALL ad valorem. HB 1255 (2026) raises the Tier 2 exemption to $12,500 AV ($125K FMV) starting 2026 tax year. Effective rates run ~0.65-0.81% statewide median.
How the bill is built
Mississippi property tax follows a 4-step calculation. Step 1: True Value. The Harrison County Mississippi Tax Assessor determines true value annually. Step 2: Apply Class I 10% AR. AV = FMV × 10%. So a $200K home has AV = $20K. Step 3: Apply homestead exemption tier. Tier 1 (under-65): tax credit up to $300/year against the bill. Tier 2 (65+ or disabled): first $7,500-$12,500 AV exempt from all ad valorem. Step 4: Apply tax rate. Tax = (AV − Tier 2 exemption) × millage / 1,000, then subtract Tier 1 credit if applicable. Harrison County\'s combined millage is ~125 mills (= ~1.25% gross, ~0.65% effective post-homestead).
2026 Harrison County rate breakdown (consolidated millage per $1,000 of AV (Class I 10% AR × FMV), Gulfport district)
| Taxing entity | Rate |
|---|---|
| Combined county + municipal + school + special districts (~125 mills × 10% Class I AR = ~0.65% effective post Homestead) | 125.0000 |
| Combined total | 125.0000 |
As of April 26, 2026 · From Harrison County Mississippi Tax Assessor.
Deductions and exemptions for 2026
Mississippi homeowner property tax relief is concentrated in three mechanisms: (1) the constitutional Class I 10% AR for owner-occupied residential, (2) the Tier 1 / Tier 2 Homestead Exemption system (Tier 1 = $300 tax credit for under-65; Tier 2 = first $12,500 AV exempt for 65+/disabled, post HB 1255 2026), and (3) the FULL Disabled Veteran Exemption for 100% service-connected disabled vets (since 2015) plus a 100% exemption for veterans 90+ years old.
Constitutional Class I 10% Assessment Ratio
Mississippi\'s constitutional 5-class property tax system: Class I (single-family owner-occupied residential) = 10% AR. Class II (residential rental + agricultural + non-utility business) = 15% AR. Class III (public service utility) = 30%. Class IV (motor vehicles) = 30%. Class V (railroads/airlines) = varies. The 10% Class I AR is the structural reason for Mississippi\'s low effective property tax rates. AV = FMV × 10%. So a $200K home has Class I AV = $20K.
Tier 1 + Tier 2 Homestead Exemption
Tier 1 (under-65 standard): Tax credit up to $300/year (sliding scale per MS Code §27-33-67) applied to the tax bill. Tier 2 (65+ OR totally disabled): First $7,500 of AV (= $75,000 FMV) exempt from ALL ad valorem — and HB 1255 (2026) raises this to $12,500 AV ($125K FMV) starting 2026 tax year. For homes with FMV at or below $125K (the majority of Mississippi homestead properties), Tier 2 produces effectively full property tax exemption. Apply with County Tax Assessor between January 1 and April 1. Annual recertification required for Tier 2 (income/disability documentation).
FULL Disabled Veteran Exemption (100% service-connected) + 90+ Vet Exemption
Mississippi provides a FULL property tax exemption from all ad valorem on the homestead for veterans with 100% service-connected total disability and honorable discharge (since 2015, MS Code §27-33-67(2)). Bonus: Honorably discharged veterans 90 years or older by January 1 of the tax year are also eligible for full exemption (independent of disability rating). Surviving unremarried spouses retain. Apply with County Tax Assessor between January 1 and April 1.
Appealing your assessment
Mississippi property tax appeals follow a 3-tier process. Level 1: County Tax Assessor. File written objection during the open inspection period (typically July-August each year — varies by county). Level 2: County Board of Supervisors. If unresolved, appeal to the Board of Supervisors during the August equalization meeting. The Board holds quasi-judicial hearings. Level 3: Mississippi Circuit Court. Board decisions can be appealed to Circuit Court within 10 days. Most Mississippi appeals are resolved at Level 1 or Level 2.