If you bought a second home or vacation property in Beaufort County this year, your first tax bill will probably be a lot bigger than the one the seller paid. South Carolina lets you knock up to 25% off the new value the county puts on your home, but only if you file for it. Nobody files it for you, and most second home buyers I talk to have never heard of it.
The deadline: for homes bought in 2026, the application must reach the Beaufort County Assessor by January 30, 2027. That date falls on a Saturday, so plan to have it in by Friday, January 29.
Why Your Tax Bill Jumps After You Buy
Two things hit a second home buyer at once. First, South Carolina taxes a primary residence at a 4% assessment ratio, while second homes, vacation homes and rentals are taxed at 6%. In Beaufort County the 6% rate also loses the school operating credit, which is why the same house can carry a bill about three times what a full-time resident pays. I break that down in South Carolina Property Taxes: The 4% vs. 6% Rule.
Second, the sale itself resets the value. A purchase counts as an "assessable transfer of interest," and the county revalues the home at roughly what you paid. The seller may have been taxed on a value that was years old and held down by the state's 15% reassessment cap. You start over at today's price.
How the 25% Exemption Works
Under S.C. Code Section 12-37-3135, the county can tax your 6% property on 75% of its new market value instead of the full amount. Lawyers and assessors also call it the ATI exemption or the point of sale exemption.
There is one floor. The exemption can't push your value below what the county already had on its books before the sale. Your taxable value ends up being whichever of these is higher:
- 75% of the new market value (usually close to your purchase price)
- The value the county carried for the home before you bought it
If you paid less than the old county value, the exemption doesn't apply at all.
Example: A Bluffton Vacation Home
Say you paid $800,000 for a home outside Bluffton town limits that the seller also used as a second home. The county had it on the books at $520,000. Taking 25% off your price gives $600,000, which is above the old $520,000 value, so $600,000 becomes your taxable value.
| Without the Exemption | With the Exemption | |
|---|---|---|
| Taxable market value | $800,000 | $600,000 |
| Assessed value (6%) | $48,000 | $36,000 |
| Est. annual tax (247.8 mills) | $11,894 | $8,921 |
That's about $2,970 a year back in your pocket for filing one page. The 247.8 mills is the full 6% millage for unincorporated Bluffton from Beaufort County's tax calculator, including school operations. Millage changes each year and differs by town and fire district, so run your own address for your real number.
The exemption stays in place as long as you own the home and it stays at 6%, though a countywide reassessment can shift the numbers.
Who Qualifies
You're likely eligible if all of these are true:
- The home is not your primary residence. It's a second home, vacation home, or a long or short term rental.
- The property is taxed at the 6% ratio and stays at 6% for the year the exemption applies.
- The sale raised the county's value above what it carried before.
A few situations work differently:
- You plan to live there full time. File for the 4% legal residence rate instead. That's a bigger break, and the two don't stack. If a 6% home later switches to 4%, the 25% exemption drops off and can't be reclaimed unless the home sells again.
- The seller lived there full time. If the home was taxed at 4% under the seller, eligibility gets murkier, since the law looks for property at 6% before and after the sale. Call the assessor before you count on the savings.
- You bought in Jasper County. Hardeeville and Ridgeland buyers get the same state exemption but file with the Jasper County Assessor.
How to Apply in Beaufort County
The application is due to the assessor by January 30 of the year after you buy. It's a one page form, and nobody files it for you automatically. Don't assume your closing attorney took care of it.
- Download the 6% Property Exemption, Assessable Transfer of Interest form from the Beaufort County Assessor.
- Fill in your parcel ID, property address and owner details, then sign it. The parcel ID is on your closing documents or the county's property search (Beaufort County IDs start with an "R").
- Get it to the Assessor's Office by January 30: P.O. Box 1228, Beaufort, SC 29901, or call (843) 255-2400 with questions. If you're mailing it, send it early with tracking.
- File once. You don't need to reapply each year while you own the home and it stays at 6%.
The savings show up on the first bill that uses your purchase price, which is for the tax year after you buy. For a 2026 purchase, that's the 2027 bill. Filing doesn't change any due dates, so keep paying each bill by January 15.
Bought a Few Years Ago and Never Filed?
You may not be out of luck. In 2020 the South Carolina Court of Appeals ruled in Fairfield Waverly v. Dorchester County Assessor that an owner doesn't lose the exemption just by missing the first January 30. The court suggested the owner still needs to apply before the next countywide reassessment.
If a late filing is accepted, the savings generally start with the year you file, not retroactively. Counties don't all handle this the same way, so call the assessor or a property tax attorney about your situation.
Why This Matters for Your Mortgage
If your taxes are escrowed, your lender likely set the escrow from the seller's old, lower bill. When the reassessed bill arrives, that gap turns into an escrow shortage and a higher monthly payment. Filing for the exemption shrinks both.
I build the real 6% tax number into every second home and vacation rental quote, so the payment you see up front is the payment you'll actually make. For the rest of what goes into financing a vacation property here, see Financing a Second Home in the Lowcountry.
Frequently Asked Questions
What is the 25% second home property tax exemption in South Carolina?
It's a state exemption under Section 12-37-3135 that lets the county tax a 6% property (second home, vacation home, rental or commercial) on 75% of its new market value after a sale, as long as that isn't below the value the county carried before the sale.
When is the deadline in Beaufort County?
January 30 of the year after you buy. For a 2026 purchase, that's January 30, 2027.
Do I have to apply every year?
No. You file once, and it stays in place while you own the home and it remains at the 6% ratio.
Can I get the 25% exemption and the 4% rate?
No. They don't stack. If the home is your primary residence, file for the 4% legal residence rate, which saves more.
I missed the deadline. Is it too late?
Not always. A 2020 Court of Appeals decision suggests you can still apply before the next countywide reassessment, with savings starting the year you file. Check with the assessor.
If you're buying in Hilton Head, Bluffton, Beaufort or Hardeeville, call me at (404) 398-9991 or email Brad@TheNoPayneBroker.com.
I'm a mortgage broker, not a tax advisor or attorney. This article is general information based on South Carolina law and Beaufort County Assessor guidance. Confirm your eligibility and deadline with your county assessor or a tax professional. Sources: Beaufort County Assessor exemption form, Beaufort County Assessor FAQ, S.C. Act 57 of 2011, Parker Poe on the Court of Appeals ruling.