The tax figure on a Beaufort listing belongs to the seller. It reflects their assessment ratio, their value on the county roll and their exemptions. A buyer who plans to use the house as a second home will pay a different bill. That bill uses a different ratio and a value the county reappraises after the sale. Most of the difference between the two bills comes from one line on the county's 2026 millage card, the 126.1-mill School Operations levy, which applies to second homes and not to qualifying primary residences.
For anyone shopping the upper end of the market in Beaufort, Port Royal, Lady's Island, St. Helena or Fripp, that levy matters more to yearly carrying cost than most differences between the houses on a tour.
The figure on the listing describes the seller's ownership
South Carolina reappraises a property when it sells. The Beaufort County Assessor calls a sale by deed an Assessable Transfer of Interest. The appraisal date is December 31 of the year the property changes hands, and that value is the fair market value for property tax purposes going forward. Under Section 12-37-3140 of the South Carolina Code, changes in value from a transfer are first taxed in the following tax year.
The same statute limits increases from countywide reassessment to 15% within a five-year period. That limit does not apply when a transfer value is first taxed. Beaufort County's last countywide reassessment was in 2023, and the next is scheduled for 2028. A seller who has owned through that cycle may be paying on a capped roll value. A buyer starts from a new fair market value appraised as of December 31 of the year of sale, which is not necessarily the price they paid.
Timing makes this concrete. A home that closes this month or in December gets its new value as of December 31, 2026, and that value first appears on the following year's bill. The bill that arrives in the meantime still reflects the seller's value. The Assessor's guidance for a recent sale is to forward the tax notice to the new owner or ask the closing attorney. Beaufort County real estate taxes are due January 15.
One levy separates the two bills in every district
The assessment ratio is the percentage of appraised value that gets taxed. Qualifying primary residences are assessed at 4%, and all other residential property is assessed at 6%. South Carolina identifies second homes as 6% property.
The two ratios also carry different millage. State law exempts qualifying 4% legal residences from school operating taxes but not from millage that repays school debt. The Beaufort County Auditor's Tax Year 2026 millage card shows the result district by district:
| Tax district, 2026 | Total mills at 6% | Total mills at 4% | Difference |
|---|---|---|---|
| City of Beaufort | 295.8 | 169.7 | 126.1 |
| Town of Port Royal | 293.9 | 167.8 | 126.1 |
| Beaufort outside city limits, Burton Fire | 294.9 | 168.8 | 126.1 |
| Lady's Island | 264.6 | 138.5 | 126.1 |
| St. Helena Island | 264.6 | 138.5 | 126.1 |
| Fripp Island | 258.3 | 132.2 | 126.1 |
In each district, the difference matches the School Operations levy to the tenth of a mill. School Debt, at 36.3 mills, applies to both ratios. The county's share has held steady. When Beaufort County Council passed its FY2027 budget in June 2026, the county announced that its 59.5-mill rate would stay the same for a fourth year. The local pieces that differ by island, such as the Lady's Island and St. Helena fire district or Fripp's erosion and bridge levies, move a bill by tens of mills. The school operations line moves it by more than a hundred.
Running $500,000 through the Lady's Island rates
Using the 2026 Lady's Island figures and a $500,000 value, before any other credits:
- As a 6% second home: $500,000 × 6% = $30,000 assessed value. At 264.6 mills, the bill is $7,938.
- As a qualifying 4% legal residence: $500,000 × 4% = $20,000 assessed value. At 138.5 mills, the bill is $2,770.
- The gap is $5,168. Take out the school operations levy and the 6% bill is $30,000 at 138.5 mills, or $4,155. That makes the ratio difference worth $1,385. The other $3,783 is the 126.1-mill levy on the $30,000 assessment.
About three-quarters of the gap comes from that one levy. The 4% versus 6% ratio, which most guides lead with, accounts for the smaller share.
At higher prices, the same math produces larger dollar amounts. The September 2026 local market update from Beaufort Jasper County REALTORS® put the 29920 ZIP median sale price at $668,150, with an average of 142 days on market and 96.8% of list price received. If a home at that price sits in the St. Helena Island tax district, the 2026 rates come to about $10,608 a year as a second home and about $3,702 as a qualifying legal residence, before other credits. The same September report showed 29907 at a $485,000 median with 128 days on market, and 29902 at $438,360 with 105 days on market. With listings staying on the market that long, buyers usually have time to work out the carrying cost before making an offer.
Why the 4% rate depends on residency documents
The lower ratio depends on where the owner legally lives, not on what kind of house it is. Beaufort County's exemptions page lists the documents the Assessor requests, for the owner and for a spouse:
- South Carolina vehicle registration
- A South Carolina driver's license or ID
- The most recently filed South Carolina income tax return or an SSA-1099
- A trust agreement, when the property is held in a trust
A buyer who keeps a primary home in another state will not have most of these. The Auditor's office notes that the 4% classification also includes a school operations credit. That credit is the 126.1 mills in the table above. The application is available online through the Assessor's forms page.
The 25% exemption that only 6% owners can claim
South Carolina offers 6% owners a partial offset tied to the same transfer that resets their value. Under Section 12-37-3135 of the state code, a 6% parcel that changes hands can exempt 25% of its new transfer value. The exempt amount cannot push the taxable value below the parcel's current fair market value on the county roll. The Assessor's FAQ puts it this way: the exemption can reduce fair market value by up to 25%, but not below the current value in county records.
This exemption is claimed by the owner and does not apply on its own. The statute requires the owner or their agent to notify the county assessor before January 31 for the tax year in which the owner first claims eligibility. After that, no further notice is needed while the property stays at 6%.
Applied to the Lady's Island example: if the $500,000 home's current county-record value is $375,000 or less, a full 25% reduction brings the taxable value to $375,000. At 6% and 264.6 mills, the bill comes to $5,953.50 before other credits. That is about $1,985 less than the unexempted second-home bill and still more than double the $2,770 legal-residence figure. The exemption reduces the value side of the bill. The School Operations levy still applies to 6% property.
This post is general information, not legal, tax or financial advice. Before you buy, confirm the classification and exemptions that apply to you with the Beaufort County Assessor, the Auditor or your own tax professional.
Quick answers
Does the 2028 reassessment change any of this?
Beaufort County has scheduled its next countywide reassessment for 2028. The 15% limit covers increases from that kind of reassessment. It does not cover a transfer value in the year it is first taxed. A buyer's starting value comes from the transfer appraisal.
Is the school operations levy the same across northern Beaufort County?
Yes, on the 2026 card. It is 126.1 mills in the City of Beaufort, Port Royal, Lady's Island, St. Helena Island and Fripp Island. School Debt is 36.3 mills in each of those districts.
What happens with the tax bill when a home sells late in the year?
When ownership changes during the current year, the Assessor's guidance is to forward the tax notice to the new owner or contact the closing attorney. A change of ownership after January 1 shows up in the Assessor's file for the following tax year.
At Chambers Helms Group, we work through the tax math with second-home buyers before they write an offer. That means checking which district a property sits in, its current value on the county roll, and what the bill would look like at 6%. If you're weighing a home on Lady's Island, Fripp or downtown, or you own one and want to know how a buyer will view your carrying costs, start with a free home valuation and we'll go through the numbers with you.
