Property taxes in South Carolina are collected by counties, not the state, and your annual bill comes from a simple formula: your property’s fair market value multiplied by an assessment ratio set by state law, multiplied by the local millage rate set by your county, schools, and any special districts.1South Carolina Revenue and Fiscal Affairs Office. Property Tax Frequently Asked Questions The ratio is 4% for an owner-occupied primary residence and 6% for most other real property, so whether you apply for the right classification can swing your bill by a third or more.
How Your Tax Bill Is Calculated
Three numbers decide what you pay. The county assessor sets your fair market value. State law assigns an assessment ratio based on how the property is used. Your local taxing authorities set a millage rate each year based on their budgets. One mill equals one dollar of tax for every one thousand dollars of assessed value.1South Carolina Revenue and Fiscal Affairs Office. Property Tax Frequently Asked Questions
A worked example. Say your primary residence has a fair market value of $250,000. At the 4% legal residence ratio, the assessed value is $10,000. If your combined millage rate is 300 mills, you multiply $10,000 by 0.300 and get an annual tax of $3,000 before any exemptions. The same home assessed at 6% because the owner never filed for legal residence status would carry a $15,000 assessed value and a $4,500 bill.
Your tax notice may also show flat service fees, such as solid waste or stormwater charges, which are not based on millage and show up as separate line items. Solid waste fees across South Carolina counties typically run from around $50 to $180 a year.
Assessment Ratios by Property Type
South Carolina law assigns a fixed assessment ratio to each category of property, and counties cannot change them.2South Carolina Legislature. South Carolina Code 12-43-220 – Classifications Shall Be Equal and Uniform; Particular Classifications and Assessment Ratios The ones most readers will encounter:
- Owner-occupied primary residence: 4% of fair market value, covering the home and up to five contiguous acres.
- Agricultural real property owned by individuals or partnerships: 4%. Corporate owners pay 6%.
- Non-owner-occupied real property, including vacation homes, rentals, and commercial buildings: 6%.
- Manufacturers, utilities, and most other personal property: 10.5%.
The gap between 4% and 6% is where most homeowners either save or lose money. A home occupied as a primary residence does not get the 4% rate automatically; you have to apply.
Exemptions That Reduce Your Bill
Legal Residence (4% Ratio and School Operating Exemption)
The legal residence classification is the single biggest break available to most homeowners. It drops your assessment ratio from 6% to 4%, and under the Property Tax Reform Act of 2006 (Act 388) it also exempts your primary residence from 100% of the school operating millage.3South Carolina Legislature. Act 388 of 2006 Presentation School operating costs are often the largest single line on a tax bill, so between the ratio cut and the school exemption, the savings are substantial.
You apply through your county assessor’s office. The home must be your permanent primary residence, and you need at least two documents proving you actually live there: a South Carolina driver’s license showing the address, vehicle registration at that address, voter registration, or recently filed federal and state income tax returns. Military members stationed in South Carolina can substitute current orders and a military ID.4South Carolina Department of Revenue. Exempt Property If you buy a new home and forget to apply, you pay the 6% rate and the full school operating millage until the application goes through, and there is no automatic retroactive fix.
Homestead Exemption for Age 65+, Disabled, or Legally Blind
The Homestead Exemption removes the first $50,000 of fair market value from all property taxes, county, municipal, school, and special assessment included.5South Carolina Legislature. South Carolina Code 12-37-250 – Homestead Exemption for Taxpayers Sixty-Five and Over or Those Totally and Permanently Disabled or Legally Blind You qualify if you have been a South Carolina resident for at least one year and meet one of these conditions by December 31 of the tax year:
- Age 65 or older.
- Totally and permanently disabled as classified by a state or federal agency.
- Legally blind under South Carolina law.
Apply at your county auditor’s office with proof of age, a disability determination letter, or certification of blindness. On a home valued at $200,000 at the 4% ratio, this exemption takes $2,000 off the assessed value, with the dollar savings depending on your millage rate.
Disabled Veteran Exemption
Veterans with a total, permanent, service-connected disability qualify for a full property tax exemption on their home and up to five acres, plus up to two private passenger vehicles.6South Carolina Department of Revenue. Veterans – Learn More About SC Property Tax Exemptions The exemption takes effect the year the disability occurs or the year the veteran acquires the property, whichever is later, and it can be claimed retroactively for up to two prior tax years if taxes were paid on time during that period. Surviving spouses of qualifying veterans can claim the same exemption immediately, even if the veteran never filed.7South Carolina Legislature. South Carolina Code 12-37-610 – Persons Liable for Taxes The veteran files a certificate signed by the county service officer with the South Carolina Department of Revenue.
Reassessment and the 15% Cap
Every county reappraises real property on a five-year cycle, with revised values taking effect in the fifth year.8South Carolina Legislature. South Carolina Code 12-43-217 – Quadrennial Reassessment You will receive a notice if your value changes by $1,000 or more. Between reassessments, state law caps any increase in your property’s fair market value at 15%, which protects long-term owners from sudden spikes when nearby homes sell at high prices.9South Carolina Department of Revenue. Individual Property Tax – Chapter 5
Two things reset or override the cap. Improvements and additions are added at full fair market value in the year they become taxable. More consequentially, an “assessable transfer of interest,” which covers most ownership changes, resets the capped value to full market value. A standard home sale triggers this, so a new buyer is assessed on the purchase price rather than inheriting the seller’s capped value.9South Carolina Department of Revenue. Individual Property Tax – Chapter 5
Several transfers are not treated as assessable transfers: transfers between spouses, transfers incident to divorce, and certain conveyances to trusts where the original owner remains sole beneficiary. Property passing to a surviving spouse by inheritance is also exempt, and property passing to children can qualify if the deceased had no surviving spouse and the property carried the 4% legal residence ratio, though a later transfer by those children is not protected.10South Carolina Legislature. South Carolina Code 12-37-3150 – Determining Assessable Transfers of Interest
Payment Deadlines and Late Penalties
County treasurers mail property tax notices in the fall, typically around October 1.11Horry County SC.Gov. Real Property Tax Payment is due in full by January 15 of the following year. Most counties accept online, mail, or in-person payment.
Miss the deadline and penalties stack on a fixed schedule:
- January 16: a 3% penalty is added to the balance.
- February 2: an additional 7% penalty is added.
- March 17: an additional 5% penalty is added.
That is 15% in penalties within about two months of the original due date.12South Carolina Legislature. South Carolina Code 12-45-180 – Penalties on Unpaid Taxes If notices went out fewer than 30 days before January 16, the first penalty date shifts to 30 days after mailing. Keep your paid receipt. You will need it to renew vehicle registrations and to satisfy any mortgage escrow requirements.
Appealing Your Assessment
If you think the county has your property’s fair market value wrong, you have 90 days from the date on your assessment notice to file a written appeal with the county assessor.13Georgetown County, SC. Appealing Property Values In years when no notice is issued, you can appeal at any time. Supporting evidence matters: recent comparable sales, an independent appraisal, documented defects.
If the assessor’s response does not resolve it, you have 30 days to appeal to the county board of assessment appeals. The board must schedule a hearing within 30 days of receiving your appeal and give both sides at least 30 days’ written notice. Bring every piece of evidence you have. The board decides by majority vote, and a tie leaves the assessor’s value in place.14South Carolina Legislature. South Carolina Code 12-60-2530 – County Board of Assessment Appeals Fail to show up and the board enters a default against you.
Filing an appeal does not pause your bill. Pay by January 15 to avoid penalties. If the appeal lowers your value, the county issues a refund or credit.
If You Fall Behind: Tax Sales and Redemption
When penalties do not bring an account current, the county eventually sells the property at a public delinquent tax auction, typically held at the courthouse.15South Carolina Legislature. South Carolina Code 12-51-50 – Delinquent Tax Sales The opening bid is usually the taxes, penalties, and costs owed.
A tax sale is not immediately final. The original owner, a mortgage holder, or a judgment creditor has 12 months from the sale to redeem the property by paying all delinquent taxes, costs, and interest owed to the successful bidder. Interest grows the longer redemption is delayed:16South Carolina Legislature. South Carolina Code 12-51-90 – Redemption of Property
- Months 1–3: 3% of the bid amount.
- Months 4–6: 6%.
- Months 7–9: 9%.
- Months 10–12: 12%.
Total interest cannot exceed the opening bid placed on behalf of the forfeited land commission. If no one redeems within the 12-month window, the bidder receives a tax deed and the former owner loses all rights to the property. If you are approaching this stage, contact the county treasurer about payment options before a sale date is set.