SC 4% Legal Residence: How to Get the Lower Property Tax Rate

So... here's the one thing I wish every buyer heard at the closing table.

If you own a home in South Carolina and you live in it, you should be paying property tax at the 4% Legal Residence rate, not 6%. But it isn't automatic. You have to apply, and a lot of new homeowners don't find out until the bill shows up.

I built a free county-by-county 4% checklist you can check off right on your phone. This post answers the questions people ask me most, so you know whether you need it.

What is the 4% Legal Residence rate?

South Carolina starts most homes at a 6% assessment ratio. That's the share of your home's taxable value the county uses to figure your bill. When the county approves your home as your primary residence, it drops to 4%.

It's not a 4% tax rate, but it's a big deal: one-third less assessed value, plus an approved home skips the school operating part of the tax. For most families, that's one of the biggest pieces of the bill you actually have control over. Your county assessor decides who qualifies, so I can't promise a dollar amount.

Is the 4% automatic?

No. Nobody files it for you. You apply once, and it stays on as long as you own and live in the home. You probably need to file if:

• You bought in the last year or so. The seller's 4% does not transfer to you.
• You bought new construction. The builder never had the 4% on it.
• Your deed changed (marriage, divorce, a name added or removed, a trust, an inheritance).
• You moved back into a home you'd been renting out.

How do I know if I already have it?

Look at your tax bill or your county's online property record for the assessment ratio. If it shows 4% (Charleston County bills show QR4), you're set. If it shows 6% and you live there, it's time to file.

Not sure what you're looking at? Text me your address and I'll pull up the public record with you.

When is the deadline?

For the 2026 tax year, the final deadline is Friday, January 15, 2027. State law says you file before the first penalty date, and tax bills are due January 15.

But here's the part that saves you a headache: county tax bills usually go out in October. If you're approved before your bill is figured, you get the right bill the first time. If you wait, you may pay the higher bill first and then chase a correction or refund. Either way, pay your bill on time. Applying doesn't pause it.

What do I need to apply?

It varies by county, but most ask for your South Carolina driver's license and vehicle registrations showing the home address, your most recent tax return, and documents for your spouse too, even if they're not on the deed. Update your license and registrations with the DMV first. The addresses have to match.

Send everything straight to the county through its official portal or by mail. Please don't email your documents to me or anyone else.

Where do I file?

Every county does it a little differently. Here's the short version. Tap your county for the full checklist:

• Berkeley County (Goose Creek, Hanahan, Moncks Corner, Cane Bay, Nexton, part of Summerville): online only, through the OneBerkeley portal.
• Dorchester County (most of Summerville, Ridgeville, St. George): online or paper, after your deed is recorded.
• Charleston County (Charleston, Mount Pleasant, West Ashley, most of North Charleston): online or by mail.
• Colleton County (Walterboro, Round O, Cottageville, Edisto Beach): paper only, by mail or in person.

Summerville and North Charleston cross county lines, so check the county name on your tax bill.

A few things people ask me

I'm active-duty military. Do I qualify? If your permanent duty station is in South Carolina, you may qualify even if your home of record is another state. Expect to provide your orders.

Can I rent my home out sometimes? Up to 72 days in a calendar year and you keep the 4%. More than that and it doesn't qualify that year.

What if I move out or turn it into a rental? Tell the assessor within six months. Counties can bill back taxes plus penalties if they find out later.

I missed it in past years. Is it too late? Not always. Ask your assessor about a prior-year refund. Charleston County's refund form goes back two tax years, and Berkeley has its own request form.

I'm 65 or older (or disabled or legally blind). Ask your county Auditor about the Homestead Exemption, too. It can take the first $50,000 of your home's value off the tax, and it's separate from the 4%.

The bottom line

One form. Once. Before your bill shows up if you can, and no later than January 15.

→ Open the 4% checklist for your county (short link to share: justcalljess.co/4-percent)

Want a heads-up like this every fall, plus the local updates that actually matter to homeowners? Join my Lowcountry homeowner list. And if a friend just bought their first South Carolina home, send them this. It's the most useful thing nobody tells you at closing.

Jessica Cherie Blommaert, REALTOR®, ABR®, MRP · Brokered by NextHome The Agency Group · Licensed in South Carolina. Each office is independently owned and operated.

Checked against official county and state sources as of October 10, 2026. Requirements change, so confirm with your county Assessor or Auditor before you file. This post is general information only, not tax or legal advice, and it doesn't guarantee eligibility or any amount of savings.