Three exemptions that stack. One requires filing before December 31. Here is exactly how they combine on homes priced from $400K to $700K in Beaufort County.
When SC real estate agents and community sales teams mention "the homestead exemption," they are often describing a three-part system as if it were one thing. Each part is a separate exemption with separate mechanics, separate filing requirements (or not), and separate savings amounts. Understanding them individually is the only way to correctly calculate your actual tax bill.
SC law taxes primary residences at 4% of assessed value and all other residential property (second homes, rentals, investment) at 6%. This single ratio difference saves $1,500–$2,500/year on a $500K–$700K home and is the foundation on which the other exemptions build. It must be filed with the Beaufort County Assessor in the year of purchase. It does not automatically apply.
Obtain Form PT-100 (or the current equivalent) from the Beaufort County Assessor's office or website. Submit it with proof of SC residency (SC driver's license, SC voter registration, or similar documentation showing your domicile). File before December 31 of the year you purchase and occupy the home as your primary residence.
Once the 4% legal residence ratio is on file, SC law automatically excludes primary residences from school operating millage — no additional filing required. In Beaufort County, the school operating millage is approximately 126.1 mills. Applied to assessed value, this is the largest single savings component in the stack.
SC Code § 12-37-250 provides a $50,000 exemption from fair market value for qualifying homeowners. This reduces the taxable base by $50,000 before the assessment ratio is applied — giving it a compounding effect on top of the 4% ratio and school exclusion.
Qualifications: Age 65 or older (or permanently/totally disabled, or legally blind) as of December 31 of the filing year. Must have been a legal resident of SC for the full calendar year prior to applying. Must be the legal owner and occupant of the residence as your primary home. File with the Beaufort County Auditor (not the Assessor — different office) by December 31.
| Filing | Office | Deadline | Consequence of Missing |
|---|---|---|---|
| 4% Legal Residence Ratio | Beaufort County Assessor | Dec 31 of purchase year | Pay 6% rate for the full year — cannot retroactively recover |
| School Operating Exclusion | Automatic with 4% approval | N/A | N/A — follows 4% filing |
| 65+ Homestead Exemption | Beaufort County Auditor | Dec 31 of qualifying year | Lose exemption for that tax year — worth $200–$400 in savings |
The 65+ homestead exemption requires one full calendar year of SC legal residency before you can apply. If you close on a Bluffton home in August 2026 and file for the 4% ratio, you will not qualify for the homestead exemption until December 31, 2027 — because 2026 is your first partial year. You will apply in 2027 for exemption effective in 2027.
This does not affect the 4% ratio (which applies immediately) or the school operating exclusion (which follows the 4% ratio). It only delays the $50,000 homestead offset by one tax year for new-to-SC residents.
Tell us your target home price and current state — we will calculate your estimated Beaufort County tax bill and the annual savings.
Get an Estimate