Every parcel of real property in South Carolina carries a unique identification number assigned by the county assessor’s office. This number — variously called a parcel number, TMS number, PIN, or map number — is the key to accessing your property’s full public record: assessment history, tax bills, ownership transfers, and exemption status. Whether you are a first-time buyer in Charleston, a landlord in Greenville, or a rural landowner in Williamsburg County, this guide shows you exactly how to find and use your South Carolina property tax ID.
What Is a South Carolina Property Tax ID Number?
South Carolina’s most distinctive property identifier is the TMS number — short for Tax Map Square number. It is assigned by your county assessor and appears on every document related to your property’s taxation: tax bills, deeds, assessment notices, and closing disclosures.
The TMS number is sometimes called:
- Parcel ID or parcel number
- PIN (Parcel Identification Number)
- Map/Block/Parcel number
- Account number (in some counties)
Unlike a street address — which can be reassigned — the TMS number stays with the land permanently unless the county resurveys or resubdivides the parcel. It is the most reliable identifier for tracking a property across ownership changes, zoning decisions, and tax years.
How to Find Your South Carolina Property Tax ID
All four methods below are free.
1. Check Your Property Tax Bill
The county mails an annual property tax bill, typically between October and November. Your TMS or parcel number is printed prominently at the top, usually labeled “TMS#,” “Parcel ID,” or “Map Number.” This is the most authoritative source for the exact format your county uses.
2. Search Your County Assessor’s Online Portal
Every South Carolina county assessor offers a free online property search. Enter your street address or owner name and the system returns your TMS number along with assessed value, tax history, and ownership information. Most counties use the Schneidercorp/qPublic platform; larger counties like Charleston, Greenville, Horry, and Anderson operate their own systems.
3. Search the South Carolina Department of Revenue (SCDOR)
The SCDOR oversees property tax policy statewide and provides links to each county assessor’s portal. You can also verify assessment ratios and exemption eligibility through the SCDOR website.
4. Check Your Deed or Closing Documents
Your recorded deed contains the legal description and TMS number. If you purchased recently, your closing disclosure, title commitment, and HUD-1 all reference the parcel ID.
How to Read a South Carolina TMS Number
The TMS number encodes the geographic location of the parcel within the county’s tax mapping grid. The format is typically structured as:
Map – Block – Parcel – Sub-Unit
Example: 249-00-01-012
| Segment | Meaning | Example |
|---|---|---|
| 249 | Tax map sheet number | Sheet 249 |
| 00 | Block within the map sheet | Block 0 |
| 01 | Parcel number within the block | Parcel 1 |
| 012 | Sub-unit (condo unit, lot split, etc.) | Unit 12 |
Exact segment lengths and separators vary by county — some use dashes, others use spaces or dots. The county assessor’s website will display the correct format for your parcel.
South Carolina Property Tax Rates by County
South Carolina’s property tax system is administered at the county level, with rates set by the county, school district, municipality, and any special taxing districts that overlap your parcel. The total millage rate is the sum of all applicable levies.
South Carolina taxes property at a fraction of its fair market value. The assessment ratio — the percentage of market value that is taxable — varies by property type:
| Property Type | Assessment Ratio |
|---|---|
| Owner-occupied residence (legal residence) | 4% |
| Non-owner-occupied / investment residential | 6% |
| Commercial and industrial property | 6% |
| Agricultural land (use value) | 4% |
| Manufacturing property | 10.5% |
This means a primary residence worth $400,000 is only taxed on $16,000 (4%), while the same property used as a rental is taxed on $24,000 (6%) — a 50% increase in tax burden simply from the designation. Getting the legal residence exemption is critical.
Approximate effective property tax rates for major SC counties:
| County | Approx. Effective Rate (Owner-Occ.) | Notes |
|---|---|---|
| Charleston | 0.50% | Low rate benefits from 4% ratio; popular coastal market |
| Horry (Myrtle Beach) | 0.35% | Among the lowest in the state |
| Beaufort (Hilton Head) | 0.42% | High values, low effective rate |
| Greenville | 0.55% | Growing metro; competitive rate |
| Richland (Columbia) | 0.61% | State capital; moderate rate |
| Lexington | 0.52% | Columbia suburbs; popular for families |
| York (Rock Hill) | 0.60% | Charlotte metro overflow |
| Spartanburg | 0.57% | Upstate growth market |
| Anderson | 0.53% | Upstate; lower cost of living |
| Dorchester | 0.56% | Charleston suburb growth area |
South Carolina’s effective property tax rates are among the lowest in the Southeast, particularly for owner-occupied homes. The 4% assessment ratio combined with the legal residence exemption makes SC property taxes very favorable compared to neighboring states.
How South Carolina Property Taxes Are Calculated
The calculation involves four steps. Understanding each step helps you catch errors before the payment deadline.
Step 1: Determine Market Value
The county assessor estimates the property’s fair market value. By law, South Carolina counties must reassess all property on a 5-year cycle. In between reassessments, values are capped — your assessed value cannot increase more than 15% from one reassessment to the next (with exceptions for new construction and ownership changes).
Step 2: Apply the Assessment Ratio
Multiply the market value by the appropriate ratio (4% for legal residence, 6% for other residential/commercial). This produces the assessed value.
Step 3: Subtract Exemptions
The SC homestead exemption (for qualifying seniors and disabled persons) and other exemptions reduce the assessed value before taxes are calculated.
Step 4: Multiply by the Millage Rate
Multiply the net assessed value by the combined millage rate (expressed as mills per $1 of assessed value).
Example: $350,000 market value × 4% ratio = $14,000 assessed value × 300 mills ÷ 1,000 = $4,200 annual tax
South Carolina Property Tax Exemptions
South Carolina offers several key exemptions that can dramatically reduce your bill — or eliminate it entirely.
Legal Residence Exemption (4% Rate)
This is the most important exemption for South Carolina homeowners. If the property is your primary legal residence, you qualify to be taxed at the 4% assessment ratio instead of 6%. On a $400,000 home, that difference is $8,000 of assessed value — saving several hundred dollars per year depending on your county’s millage rate.
You must apply for the legal residence designation with your county assessor. It does not apply automatically. File before January 15 of the tax year. You only apply once — the designation stays until you move or the property changes use.
Homestead Exemption for Seniors and Disabled Persons
South Carolina offers one of the most generous senior property tax exemptions in the nation. Homeowners who are:
- Age 65 or older, OR
- Declared totally and permanently disabled, OR
- Legally blind
…and who have owned and occupied the property as their legal residence for at least one full calendar year, qualify for the SC Homestead Exemption. This exempts the first $50,000 of fair market value from all property taxes. On a $200,000 home assessed at 4%, this eliminates 25% of the taxable value — saving $300–$700 per year depending on the county.
Apply at your county auditor’s office between January 1 and July 15 of the year you first qualify. You apply once; the exemption renews automatically.
Special Assessment for Agricultural Land
Land used for bona fide agricultural purposes (farming, timber, livestock) qualifies for a special 4% ratio based on use value rather than market value. Use value is typically far lower than market value in growing areas, resulting in dramatically lower taxes for qualifying farmland.
Other Exemptions
- Disabled veteran exemption — Veterans with 100% service-connected disability receive a full property tax exemption on their primary residence
- Surviving spouse exemption — Surviving spouses of firefighters and law enforcement officers killed in the line of duty receive full exemption
- Religious and charitable organizations — Properties owned by qualifying nonprofits may be fully exempt
How to Appeal Your South Carolina Property Tax Assessment
If you believe your property has been assessed at too high a value, South Carolina law gives you the right to appeal. Act quickly — the deadlines are strict.
Deadline
You must file a written objection with the county assessor within 90 days of the date on your assessment notice. Missing this window means you forfeit your appeal right for that tax year.
Informal Review
Most counties first attempt an informal resolution. The assessor reviews your evidence and may adjust the value without a formal hearing. This is the fastest path to a reduction.
County Board of Assessment Appeals
If the informal review does not resolve the dispute, you can request a hearing before the County Board of Assessment Appeals. Present comparable sales data, an independent appraisal, and documentation of any property defects. The board’s decision is the county’s final word.
Administrative Law Court (ALC)
If you disagree with the County Board’s decision, you can appeal to the South Carolina Administrative Law Court. This step involves formal legal proceedings and is typically used for high-value properties or complex valuation disputes.
When Are South Carolina Property Taxes Due?
South Carolina property tax bills are issued in the fall and are due by January 15 of the following year. A 3% penalty applies if unpaid by January 15, followed by additional penalties and ultimately a tax lien sale if the account remains delinquent.
Payment Options
- Online through your county treasurer’s website
- In person at the county treasurer’s office
- By mail (postmark by January 15)
- Drop box at the county courthouse
Installment Plan
South Carolina offers a tax prepayment plan administered by the county treasurer. You can pay your estimated taxes in monthly installments throughout the year and receive a small discount on the total owed. Contact your county treasurer to enroll.
Vehicle Property Taxes in South Carolina
Unlike most states, South Carolina taxes personal property including vehicles. Motor vehicle property taxes are collected by the county treasurer when you register or renew your vehicle registration. The rate is the same millage rate applied to real property. This surprises many new residents — budget for it when moving to South Carolina.
Search South Carolina Property Records by County
Direct links to property search portals for major SC counties:
- Charleston County — charlestoncounty.org/assessor
- Greenville County — greenvillesc.gov/assessor
- Horry County (Myrtle Beach) — horrycounty.org/assessor
- Richland County (Columbia) — qPublic Richland
- Lexington County — qPublic Lexington
- Spartanburg County — spartanburgcounty.org/assessor
- York County (Rock Hill) — yorkcountygov.com/assessor
- Anderson County — acs.andersoncountysc.org
- Beaufort County — bcgov.net/assessor
- Berkeley County — berkeleycountysc.gov/assessor
For all 46 counties, most use the Schneidercorp qPublic platform — search by county name to find your portal.
South Carolina Property Tax ID vs. Other Identifiers
| Identifier | Assigned By | What It Identifies |
|---|---|---|
| TMS Number / Parcel ID | County assessor | The parcel in the tax map system |
| Deed Book / Page | Register of Deeds | The recorded deed document |
| Plat Book / Page | Register of Deeds | The recorded subdivision plat |
| Lot / Block / Subdivision | Recorded plat | Subdivision legal description |
| FIPS Code | U.S. Census Bureau | SC county in federal datasets (45XXX) |
Bottom Line
South Carolina offers some of the lowest effective property tax rates in the Southeast — especially for owner-occupied homes — but only if you take the steps to claim what you’re owed. File for the legal residence designation as soon as you move in (it drops your assessment ratio from 6% to 4%), and apply for the senior homestead exemption if you qualify. Your TMS number makes it easy to track your property online, verify your assessment, and file a protest if your value is too high. With a 90-day appeal window and an accessible review process, South Carolina gives property owners real tools to keep their tax bills in check.
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