How Property Taxes Work in South Carolina

What South Carolina property taxes are and who pays them

Property tax in South Carolina is a yearly tax on real estate — land and buildings — that goes to your county and local school district. The county assessor determines the value of your property, the county auditor calculates what you owe based on that value and your local tax rate, and you pay the bill to your county treasurer. Unlike income tax, which the state collects, property tax stays local: it funds schools, roads, fire departments, and county services in your area.

You pay property tax if you own real estate in South Carolina, whether you live there or rent it out. If you have a mortgage, your lender may require you to pay property tax through an escrow account — meaning you send money to the lender each month, and they pay the tax bill when it comes due. If you own the property outright, you receive the bill directly and pay the county treasurer.

Key Takeaways

• Property tax is calculated by multiplying your property's assessed value by your local millage rate, which varies by county and school district.
• The county assessor sets the assessed value, which is usually lower than market value because South Carolina uses a fractional assessment system.
• Tax bills arrive in December for the year ahead, and payment is due by January 15 without penalty.
• You can challenge your assessed value through a formal appeal process if you believe it is too high.
• Homeowners may be may have access to to a primary residence exemption that lowers the assessed value of their home.

How the assessed value is determined

Your property's assessed value is not the same as what you paid for it or what it would sell for today. South Carolina assesses property at a percentage of its fair market value — the price a willing buyer would pay a willing seller. This percentage, called the assessment ratio, varies by property type. Owner-occupied homes are typically assessed at 4 percent of fair market value, rental properties at 8 percent, and commercial property at 5 percent.

The county assessor's office determines fair market value by looking at recent sales of similar properties in your area, the condition of your building, the size of your lot, and any improvements you have made. They do not always inspect every property every year. If you have made major changes — added a room, built a deck, or significantly improved the land — the assessor may raise the value. You can request an inspection if you believe the value is wrong.

Assessed values are supposed to be updated every five years in most counties, though some counties reassess more often. When a reassessment happens, many property values change at once. This does not mean your tax bill will rise by the same percentage — it depends on how your property's value changed compared to others in your county.

How your tax bill is calculated

Once the assessor sets your assessed value, the county auditor calculates your tax using a simple formula: assessed value × millage rate = property tax owed. A mill is one-tenth of one cent, so a millage rate of 400 mills means you pay $0.40 in tax for every $100 of assessed value.

Your millage rate is not the same everywhere in South Carolina. It is set by your county government and your school district separately, and they add together. A county might have a rate of 150 mills, and your school district might add another 250 mills, for a total of 400 mills. If you live in a different school district or county, your rate will be different. You can find your specific millage rate on your tax bill or by calling your county assessor's office.

Here is a concrete example: if your home's assessed value is $100,000 and your combined millage rate is 400 mills, your annual property tax is $400. If your assessed value is $200,000, your tax is $800. The bill covers the full year and is due by January 15.

When your tax bill arrives and how to pay it

Property tax bills are mailed in December for the tax year that begins January 1. The bill shows your assessed value, your millage rate, any exemptions you receive, and the total amount due. Payment is due by January 15 without penalty. If you pay after January 15, you owe a penalty and interest — typically 3 percent penalty plus interest that accrues daily.

You can pay your property tax bill to your county treasurer in person, by mail, or online through your county's website. Some counties accept credit cards or electronic transfers; others accept checks only. Contact your county treasurer's office to find out what payment methods are available in your county. If you own property in multiple counties, you will receive separate bills from each.

If you have a mortgage, your lender likely handles this for you. Your monthly mortgage payment includes a portion for property tax, which goes into an escrow account. The lender pays your tax bill on your behalf when it comes due. You will still receive a bill in your name so you can verify the amount, but the lender makes the actual payment.

Primary residence exemption and other reductions

South Carolina offers a primary residence exemption that reduces the assessed value of a home you own and live in. The exemption reduces your assessed value by $50,000, which lowers your tax bill significantly. To receive this exemption, you must own the property and live there as your primary home. You do not receive the exemption if you own a rental property or a vacation home.

To claim the exemption, you file a form with your county assessor's office, usually called a "Homestead Exemption Application" or "Primary Residence Exemption Form." You will need to prove you own the property and that it is your primary residence — typically a deed and a driver's license or voter registration showing your address. Once approved, the exemption applies automatically each year unless you move or sell the property.

Other reductions may be available depending on your situation. Disabled veterans, surviving spouses of veterans, and people over 65 may may have access to for additional exemptions or deferrals. Agricultural land and forest land may be assessed at a lower rate than residential property. Contact your county assessor's office to learn what you may be may have access to to.

Challenging your assessed value

If you believe your assessed value is too high, you can file a formal appeal. The process starts with a written request to your county assessor, usually due by a specific date in the spring — check your county's deadline. In your request, explain why you think the value is wrong. You might argue that the assessor overestimated the condition of your home, used the wrong comparable sales, or made an error in calculating square footage.

The assessor will review your request and may schedule an inspection or ask you to provide evidence — recent appraisals, repair estimates, or photos of damage. If the assessor agrees, the value is lowered. If you disagree with the assessor's decision, you can appeal to your county's Board of Equalization, which is a separate body that hears property tax disputes. The board will hold a hearing where you can present your case.

If you still disagree after the board's decision, you can file a lawsuit in circuit court, but this is expensive and most homeowners do not pursue it. The appeal process itself is free. Many counties also offer informal conferences where you can discuss your value with an assessor before filing a formal appeal.

What happens if you do not pay your property tax

If your property tax bill goes unpaid, penalties and interest begin to accrue immediately after January 15. After a certain period — usually two to three years, depending on your county — the county can place a tax lien on your property. A tax lien means the county has a legal claim against your home for the unpaid taxes, penalties, and interest.

If the lien is not satisfied, the county can eventually sell your property at a tax sale to recover the money owed. Before this happens, you will receive notices and have opportunities to pay. If you are struggling to pay your property tax bill, contact your county treasurer immediately to discuss payment options or a payment plan. Many counties will work with you rather than proceed to a sale.

Frequently Asked Questions

Can I deduct South Carolina property taxes from my federal income tax?

Yes, if you itemize deductions on your federal tax return. Property taxes are considered a state and local tax (SALT) deduction, but there is a federal cap of $10,000 per year on all state and local taxes combined. Consult a tax professional to determine whether itemizing benefits you.

What is the difference between assessed value and market value?

Market value is what your home would sell for today. Assessed value is a fraction of that — typically 4 percent for owner-occupied homes in South Carolina. The assessor uses market value to calculate assessed value, but they are not the same number.

Do I have to pay property tax if I own the land but no building?

Yes. South Carolina taxes land and buildings separately, so you owe property tax on vacant land you own. The tax is usually lower than on improved property because the assessed value is lower.

How often does the county reassess property values?

Most South Carolina counties reassess every five years, though some do it more frequently. When a reassessment happens, many values change at once. You will receive notice before a reassessment occurs.

What if I disagree with my county's millage rate?

The millage rate is set by your county council and school board through a public budget process. You cannot appeal the rate itself, but you can attend budget meetings and speak to your elected officials about it. The rate applies equally to all properties in your county or school district.