South Carolina's 4% and 6% Property Tax Rates, and Why New Owners Get Billed the Wrong One

There are two assessment ratios

South Carolina assesses an owner-occupied home — your legal residence — at 4 per cent, and most other residential property at 6 per cent. That difference is not a rounding error. The ratio sets the assessed value your bill is calculated from, so the gap runs through every line of the tax bill rather than appearing at the end of it.

The 4 per cent is not automatic

This is the part that costs people money. You do not get the legal residence rate simply by moving in. You have to apply for it with the assessor in the county where the property sits, and show that the home really is your primary residence. If you do not apply, you are billed at 6 per cent. And a buyer's first bill after closing is very often still calculated on the previous owner's classification rather than on yours.

Apply promptly after you close

Do it once you have closed rather than when a bill turns up. Be ready to show proof of domicile — a South Carolina driver's licence, vehicle registration, voter registration, or a South Carolina income tax return showing the property address. If you have just moved from another state, getting the driver's licence dealt with early makes the rest of it much easier.

Which county you apply to matters

You apply to the county the property is in. Around here that is usually Lexington or Richland. If you are buying in Irmo it may genuinely not be obvious which of the two you are in, because the town sits across the county line.

If the owner is 65 or older, there is a second and separate exemption

The 4 per cent legal residence ratio is not the only relief available, and the two get confused constantly because different offices handle them. South Carolina's Homestead Exemption exempts the first $50,000 of the fair market value of your legal residence from property tax, for homeowners who are 65 or older, or totally and permanently disabled, or legally blind.

Two conditions matter. You must have been a legal resident of South Carolina for at least a year, as of the 31st of December in the year before you claim it. And you must already hold the 4 per cent legal residence classification, because the homestead exemption sits on top of it rather than replacing it.

The other thing worth knowing is who to ask. The 4 per cent classification is handled by the county assessor. The homestead exemption is handled by the county auditor. Different office, different application — people routinely apply for one and assume they now have both.

Homestead exemption details from South Carolina Department of Revenue and county guidance, retrieved 8 September 2026. Confirm eligibility and deadlines with your county auditor.

Please check rather than take my word for it

Assessment classification is specific to the property and the rules do change. Confirm current requirements and deadlines with the assessor in the county where you are buying. This page is general information to make sure you know the question exists — it is not tax advice.