What is the property tax rate in Charleston County?

The combined effective property tax rate in Charleston County, South Carolina is approximately 0.55%.

Charleston County Property Tax Calculator (2026) — South Carolina Property Tax Almanac

Property Tax in Charleston County, 2026

A calculator and field guide for Charleston-area homeowners — and for anyone considering a move to Charleston County — including South Carolina's distinctive 4% Legal Residence assessment ratio (vs. 6% for non-owner-occupied), Act 388's school operating millage exemption for owner-occupants (one of the most valuable in the United States), the $50,000 Homestead Exemption for ages 65+, and the constitutional 100% P&T Disabled Veterans Full Exemption.

Charleston County, home to Charleston and 415k South Carolinians, operates under South Carolina's distinctive owner-occupant-favorable property tax system. Owner-occupied "legal residence" property is assessed at 4% of fair market value (vs. 6% for non-owner-occupied — a 50% higher tax for rentals or second homes). Tax = AV × millage / 1,000. Act 388 (2006) exempts legal residences from school operating millage (replaced by 1% sales tax) — only school bond debt millage applies. Combined, this produces among the lowest effective property tax rates in the United States for owner-occupants.

How the bill is built

South Carolina property tax has 4 steps. Step 1: Fair Market Value. The Charleston County South Carolina Assessor's Office determines FMV every 5 years (statewide reassessment cycle). Between reassessments, the 15% cap limits taxable value increases. Step 2: Apply 4% Legal Residence assessment ratio. AV = FMV × 4% for owner-occupants who APPLIED for legal residence classification. Without application, AV = FMV × 6% (50% higher tax). Step 3: Subtract Homestead Exemption (if 65+/disabled/blind). $50,000 FMV reduction before applying the 4% AR. Step 4: Apply consolidated millage POST Act 388 school operating exemption. Tax = AV × millage / 1,000. Charleston County's combined post-Act-388 owner-occupied millage is ~344 mills.

The 4% Legal Residence classification REQUIRES APPLICATION — and failure to apply means 6% rate (50% higher tax). Apply with the County Assessor\'s office (deadline typically January 15 of each year, or before the first penalty date). Required documents: South Carolina driver\'s license (with property address), South Carolina vehicle registration (with property address), South Carolina state income tax return showing the property address, and trust documents if applicable. Most counties allow online application. Once approved, Legal Residence status carries forward — but if you LOSE eligibility (rent the property, move out), you must notify the assessor within 6 months or face a 100% penalty plus interest plus up to 10 years of back-tax bills at 6%.

Act 388 (2006) is a defining South Carolina property tax feature. The legislation eliminated school operating millage for owner-occupied legal residences — funded by a 1% increase in the state sales tax (from 5% to 6%, effective 2007). School operating millage typically accounted for 50-65% of the total property tax bill before Act 388 — making this the single most-valuable property tax benefit for SC owner-occupants. Only school BOND debt millage (capital infrastructure repayment) still applies to legal residences. Investment / non-owner-occupied properties remain subject to school operating millage AND are taxed at 6% AR — producing dramatically higher tax bills.

100% P&T disabled veterans receive a FULL exemption on dwelling + 1 acre. South Carolina\'s disabled-veteran exemption is among the most-comprehensive in the United States. Veterans with permanent and total (P&T) service-connected disability — or 100% individually unemployable — pay $0 in property tax on their primary residence and 1 acre. Stacks with the 4% Legal Residence rate. Surviving unremarried spouses retain. Apply with Form PT-401-I at the County Auditor. Vehicles owned by disabled vets receive a separate exemption.

2026 Charleston County rate breakdown (consolidated millage per $1,000 of AV (4% Legal Residence × FMV, post Act 388 school operating exemption), Charleston district)

Taxing entity	Rate
Combined consolidated millage (post 4% legal residence + school operating exemption, ~344 mills × 4% AR = ~0.55% effective)	344.0000
Combined total	344.0000

As of April 26, 2026 · From Charleston County South Carolina Assessor's Office.

Note: Charleston County is **home to historic Charleston** — the most-celebrated colonial-heritage city in the United States, founded 1670 (initially as Charles Towne) and the **largest city in South Carolina** (~155K). The county is the cultural and economic anchor of the **Lowcountry** region. Charleston (the city, ~155K, the seat) is home to the College of Charleston, The Citadel, and the Medical University of South Carolina (MUSC). North Charleston (~115K) is the second-largest city — home to the major Joint Base Charleston military installation, Boeing's 787 Dreamliner final assembly facility (the only Boeing 787 facility outside Washington state), and Charleston International Airport (CHS). Mount Pleasant (~100K, across the Cooper River) is an affluent residential suburb home to historic Patriots Point Naval Museum and the Arthur Ravenel Jr. Bridge.

Note: Charleston County effective property tax rates run approximately **0.55% — among the lowest in the United States**. Combined millage is ~344 mills, applied to 4% legal residence AR for owner-occupants (post-school operating exemption). Median home values around $420K (one of the highest in SC, driven by historic Charleston peninsula prices) combined with the very low effective rate produce median annual bills around $2,310.

Note: For relocation buyers: Charleston County offers **the premier coastal-historical Southern** option — extraordinary historic architecture, world-class restaurants (Charleston has more James Beard Award nominations per capita than nearly any US city), beach access (Folly Beach, Isle of Palms, Sullivan's Island), and a massive tourism economy (~7M annual visitors). The trade-offs: substantial hurricane risk, increasing flood insurance costs, and aggressive tourism-driven housing inflation. Top-5 nationally-ranked relocation destination consistently since 2015.

Deductions and exemptions for 2026

South Carolina homeowner property tax relief is concentrated in four mechanisms: (1) the 4% Legal Residence assessment ratio (vs. 6% for non-owner-occupied — REQUIRES APPLICATION), (2) Act 388\'s school operating millage exemption (eliminates the largest single component of property tax bills, automatic for legal residences), (3) the $50,000 Homestead Exemption for ages 65+ / disabled / blind, and (4) the constitutional full property tax exemption for 100% P&T disabled veterans. Combined, these produce one of the most owner-occupant-favorable property tax structures in the United States.

4% Legal Residence Classification (REQUIRES APPLICATION)

South Carolina taxes owner-occupied "legal residence" property at 4% of fair market value — substantially below the 6% for non-owner-occupied (rentals, second homes). To qualify, the owner must have actually owned and occupied the residence as primary residence and been domiciled at the address during the applicable tax year. The Legal Residence applies to the home + up to 5 acres of contiguous land. Application is required with the County Assessor (deadline typically January 15 each year, or before the first penalty date). Required documents: South Carolina driver\'s license (with property address), SC vehicle registration, SC state income tax return showing the property address. Failure to apply means 6% rate. If you LOSE eligibility, notify the assessor within 6 months or face a 100% penalty plus interest plus up to 10 years of back-tax bills at 6%.

Act 388 School Operating Exemption (automatic)

Act 388 (2006) eliminated school operating millage for owner-occupied legal residences — replaced by a 1% increase in the state sales tax. Only school BOND debt millage (capital infrastructure repayment) applies to legal residences. School operating millage typically accounted for 50-65% of the total property tax bill before Act 388. No application required — automatic for properties classified as 4% Legal Residence.

Homestead Exemption ($50,000 FMV reduction for 65+/disabled/blind)

South Carolina seniors 65+ (or those legally blind / totally and permanently disabled) qualify for the Homestead Exemption — reducing fair market value of the primary residence by $50,000 BEFORE the 4% assessment ratio is applied. This is on top of the 4% Legal Residence rate and Act 388 school operating exemption. Apply with the County Auditor (NOT the assessor — common confusion). Must turn 65 by December 31 of the year prior to the tax year. The savings is typically $250-$400/year.

100% P&T Disabled Veterans Full Exemption

South Carolina provides a complete property tax exemption for 100% Permanent and Total disabled veterans on dwelling and 1 acre — among the most-comprehensive in the United States. The exemption stacks with the 4% Legal Residence rate (school operating exemption already in place) — meaning a 100% P&T disabled vet pays $0 in property tax on the dwelling. Surviving unremarried spouses retain. Apply with Form PT-401-I at the County Auditor with DD-214 + VA rating decision (must specify P&T or 100% service-connected). Annual reapplication generally not required after initial approval.

Appealing your assessment

South Carolina property tax appeals follow a 3-tier process. Level 1: County Assessor. File written objection within 90 days of receiving the assessment notice (or before the first penalty date for the tax year). The Assessor reviews and may adjust. Level 2: County Board of Assessment Appeals (CBAA). If denied, appeal to the County Board within 30 days of the Assessor\'s decision. CBAA holds quasi-judicial hearings — present comparable sales, recent appraisals, or condition documentation. Level 3: South Carolina Administrative Law Court (ALC). CBAA decisions can be appealed to the ALC; from there to Circuit Court. Most South Carolina appeals are resolved at Level 1 or Level 2. Comparable sales evidence is the most-effective basis for appeal.

Cities and towns in Charleston County

Charleston County contains 6 incorporated municipalities, ranging from Charleston to the smallest village. Search volume for property tax is often city-specific, so here is the complete list — with population from the 2020 US Census, rounded to the nearest 100.

Data: US Census Bureau, 2020 Decennial Census. Populations rounded. Cities marked as "split" straddle a county border — the portion inside Charleston County is subject to Charleston County's tax rolls, while the portion outside is subject to the adjacent county's.

City or town	Type	Population (2020)
Charleston County seat Split	city	155,000
North Charleston Split	city	115,000
Mount Pleasant	town	100,000
James Island	town	12,100
Isle of Palms	city	4,400
Folly Beach	city	2,400

About city-level property tax rates: The rate breakdown and calculator on this page reflect the Charleston tax district. Other cities in Charleston County may pay into different school districts, city rates, and special districts — so their combined rates can differ, sometimes substantially. Always verify the specific rates for your address with the Charleston County South Carolina Assessor's Office before relying on any estimate.

Frequently asked questions

When are South Carolina property taxes due?

South Carolina property taxes are typically due by January 15 of the year following the tax year (though the exact date depends on when the county mails tax bills, typically October-November). Late payments accrue penalty (typically 3% in February, 7% in March, plus collection fees and possible tax sale). Most South Carolina homeowners pay through escrow via mortgage servicer.

What is the 4% Legal Residence classification and how do I apply?

South Carolina taxes owner-occupied "legal residence" property at 4% of fair market value — substantially below the 6% for non-owner-occupied (rentals, second homes). To qualify: own and actually occupy the residence as your primary residence, and be domiciled at the address. The Legal Residence applies to the home + up to 5 acres of contiguous land. Application is required with the County Assessor (deadline typically January 15 each year, or before the first penalty date). Required documents: South Carolina driver\'s license (with property address), SC vehicle registration, SC state income tax return. Failure to apply means 6% rate (50% higher tax). If you LOSE eligibility (rent the property, move out), you must notify the assessor within 6 months or face a 100% penalty plus interest plus up to 10 years of back-tax bills.

What is Act 388 and why does it matter?

Act 388 (2006) is among the most consequential South Carolina property tax laws. The legislation eliminated school operating millage for owner-occupied legal residences — replaced by a 1% increase in the state sales tax (from 5% to 6%, effective 2007). School operating millage typically accounted for 50-65% of the total property tax bill before Act 388 — making this the single most-valuable property tax benefit for SC owner-occupants. Only school BOND debt millage (capital infrastructure repayment) still applies to legal residences. Investment / non-owner-occupied properties remain subject to school operating millage AND are taxed at 6% AR — producing dramatically higher tax bills (often 2-3x the owner-occupant bill on identical homes).

How does the Homestead Exemption stack with the 4% Legal Residence?

The Homestead Exemption (for ages 65+ / disabled / blind) and the 4% Legal Residence classification are SEPARATE programs that BOTH apply to qualifying senior owner-occupants. The Homestead Exemption reduces fair market value by $50,000 BEFORE the 4% assessment ratio is applied. So a senior 65+ in a $300,000 home pays tax on AV = ($300,000 − $50,000) × 4% = $10,000 — and only on the post-Act-388 millage (no school operating). The savings is typically $250-$400/year. Apply with the County Auditor (NOT the assessor) — this is a frequent source of confusion.

How does the 100% P&T Disabled Veterans Full Exemption work?

South Carolina provides a complete property tax exemption for 100% Permanent and Total disabled veterans on dwelling and 1 acre — among the most-comprehensive in the United States. Eligibility: VA-determined 100% Permanent and Total service-connected disability (or 100% individually unemployable). Mechanism: $0 in property tax on the primary residence and 1 acre. Stacks with the 4% Legal Residence rate (school operating exemption already in place). Surviving spouses: unmarried surviving spouses retain. Apply with Form PT-401-I at the County Auditor with DD-214 + VA rating decision specifying P&T. Annual reapplication is generally not required after initial approval. Vehicles owned by disabled vets receive a separate exemption.

How do I appeal my South Carolina assessment?

South Carolina property tax appeals follow a 3-tier process. Level 1: County Assessor. File a written objection within 90 days of receiving the assessment notice (or before the first penalty date for the tax year). The Assessor reviews and may adjust. Level 2: County Board of Assessment Appeals (CBAA). If denied, appeal to the CBAA within 30 days. CBAA holds quasi-judicial hearings — present comparable sales, recent appraisals, or condition documentation. Level 3: South Carolina Administrative Law Court (ALC). CBAA decisions can be appealed to the ALC; from there to Circuit Court. Most appeals are resolved at Level 1 or Level 2.

About Charleston County

Beyond the property tax — a few things you might not know about the place.

Weird fact

Charleston is **the only US city built entirely on a peninsula between two rivers** (the Ashley and Cooper) that converge at the harbor — and the city's historic district sits **at sea level or below** for most of its area. Charleston has been **flooded approximately 89 times in 2019 alone** (during "King tides" — extreme high-tide events) — making it the most-flood-prone major US city. The Charleston Sea Wall (Battery and seawall along the southern peninsula) is being raised approximately 3 feet (with substantial federal/state funding) as a climate-change adaptation measure. The city's historic preservation laws (the Old and Historic District, established 1931 — the first US historic preservation district) have prevented modern development from altering the colonial-era streetscape.

Hometown hero

Stephen Colbert

The American comedian, writer, and political satirist (born 1964 in Washington, DC, raised in Charleston / James Island, Charleston County) — host of The Late Show with Stephen Colbert (CBS, 2015-present) and previously The Colbert Report (Comedy Central, 2005-2014) — graduated from Porter-Gaud School (a private school in Charleston County) in 1982. Colbert's family was deeply rooted in Charleston Catholic society. His siblings include James Colbert (a federal magistrate judge in Charleston) and Ed Colbert (a federal prosecutor). The 1974 Eastern Air Lines Flight 212 crash (which killed his father and two brothers en route from Charleston to Charlotte) was a defining childhood event. Colbert has won 9 Primetime Emmy Awards.

Biggest annual event

Spoleto Festival USA + Cooper River Bridge Run

Spoleto Festival USA (annual, 17 days late May - early June, in venues throughout downtown Charleston, since 1977) is **one of the most-prestigious arts festivals in the United States** — featuring 100+ performances of opera, theater, dance, chamber music, jazz, and visual arts from international artists. The Cooper River Bridge Run (annual, late March/early April, since 1978) is **one of the largest 10K races in the United States** — drawing 35,000+ runners across the 2.7-mile Arthur Ravenel Jr. Bridge from Mount Pleasant to downtown Charleston, with the Charleston Cup awarded to the elite winner.

Property Tax in Charleston County, 2026