Berkeley County, SC Property Tax Rate: Millage, Exemptions, Appeals

The Berkeley County, SC property tax rate for 2025/2026 is 246.5 mills in unincorporated areas, meaning about $246.50 in gross tax per $1,000 of assessed value. Inside a municipality the combined rate runs higher, from 268.3 mills in Bonneau to 345.5 mills in St. Stephen, because city millage is added on top. What you actually pay depends on three things: your home’s appraised value, whether it qualifies for the 4% owner-occupied assessment ratio, and which tax district covers the parcel.1Berkeley County Government. Millage 2025-2026

How Your Tax Bill Is Calculated

South Carolina taxes only a percentage of a property’s fair market value, and that percentage depends on how the property is used. A home you own and live in as your primary residence is assessed at 4%. Second homes, rentals, and commercial real estate are assessed at 6%. Manufacturing and utility property is assessed at 10.5%.2South Carolina Legislature. South Carolina Code 12-43 – County Equalization and Reassessment – Section 12-43-220

The gap between 4% and 6% is larger than most people realize. On a $300,000 home, the 4% ratio produces an assessed value of $12,000; the 6% ratio produces $18,000. Every mill on the bill applies to that assessed value, so the difference compounds across every taxing entity.

Once assessed value is set, the county multiplies it by the total millage rate for your district. One mill equals one dollar per $1,000 of assessed value. The total rate is the sum of levies from the county, the school district, and any municipality or special district that covers the parcel. Each entity sets its own millage during its annual budget, so the combined rate shifts year to year and location to location.3Berkeley County Government. Real Property

Millage Rates by District

Because millage varies by location, two neighbors on opposite sides of a city line can owe very different amounts on identical homes. The 2025/2026 totals published by the Berkeley County Auditor:1Berkeley County Government. Millage 2025-2026

  • Unincorporated Berkeley County (Districts 1–8, 81, 99): 246.5 mills
  • Town of Bonneau: 268.3 mills (21.8 city mills)
  • Town of Jamestown: 282.5 mills (36.0 city mills)
  • Sangaree Special District: 295.0 mills (48.5 district mills)
  • City of Goose Creek: 306.5 mills (60.0 city mills), plus a $185 sanitation fee
  • Town of Summerville: 312.5 mills (66.0 city mills), plus a $176.25 sanitation fee
  • Town of Moncks Corner: 320.3 mills (73.8 city mills), plus a $175 fee
  • City of Hanahan: 323.9 mills (77.4 city mills)
  • City of Charleston: 328.4 mills (81.9 city mills)
  • North Charleston: 338.0 mills (91.5 city mills)
  • Town of St. Stephen: 345.5 mills (99.0 city mills)

Properties in unincorporated areas skip municipal millage entirely, which is why the base rate is the lowest on the list. Residents inside city limits are paying for additional services like municipal police, fire, and sanitation. Some jurisdictions add flat charges for sanitation or stormwater as separate line items.

What You Actually Pay: A Worked Example

The gross millage overstates what most homeowners write a check for, because two automatic credits absorb a large share of the bill. Berkeley County’s own worked example uses a $100,000 owner-occupied home in an unincorporated area:4Berkeley County Government. Computation 2025-2026

  • Appraised value: $100,000
  • Assessment ratio: 4% (legal residence)
  • Assessed value: $4,000
  • Millage rate: 246.5 mills (0.2465)
  • Gross tax: $986.00
  • School operating tax credit (Act 388): −$567.60
  • Local option sales tax credit: −$73.00
  • Net tax liability: $345.40
  • County fire fee: +$79.88 (if applicable; amount varies)
  • Solid waste fee: +$99.00
  • Stormwater fee: +$36.00 (if applicable; amount varies)
  • Total due: $560.28

The school operating tax credit eliminates all school operating millage for owner-occupied homes. The local option sales tax credit uses county sales tax revenue to offset a portion of the property tax. Both are applied automatically once the 4% legal residence classification is in place. At a $300,000 appraised value, the same arithmetic produces roughly $1,036 in net tax before fees.

The 4% Legal Residence Application

The 4% assessment ratio is not automatic. You have to apply with the Berkeley County Real Property (Assessor) office. If you recently bought a home, changed the deed, or never filed, the county will assess the property at 6% until the application is on file.5Berkeley County Government. Deadline to Apply for 4% Special Assessment Credit January 15, 2026 The deadline for the current tax year is January 15. Applications filed after that date apply to the following year.

You can apply online through the county’s property portal or in person at the Berkeley County Administration Building at 1003 Highway 52 in Moncks Corner. The application requires documentation showing that the property is your only legal residence.6Berkeley County Government. Frequently Asked Questions – Real Property Missing this filing is one of the most expensive mistakes a homeowner can make. The gap between 4% and 6% is only part of the cost; a 6% property also loses the Act 388 school operating credit entirely.

The Act 388 School Operating Credit

South Carolina’s Act 388, passed in 2006, exempts owner-occupied homes from all school district operating millage. In Berkeley County, that operating millage is 141.9 mills for 2025/2026, the single largest component of the 246.5-mill base rate. For a 4% home the credit erases well over half of the gross bill.7South Carolina Legislature. South Carolina Code 12-37-220(B)(47) – Act 388

The credit covers school operating millage only, not school debt millage. Berkeley County’s 55.0 mills of school debt still appears on the bill. And 6% properties get no school operating credit at all, which is a large part of why the effective tax on rentals, second homes, and commercial property runs so much higher.

Homestead Exemption for Seniors, Disabled, and Blind Residents

South Carolina removes the first $50,000 of a home’s fair market value from all property taxes for qualifying residents. You qualify if you have been a South Carolina resident for at least one year and meet one of these criteria:8South Carolina Legislature. South Carolina Code 12-37-250 – Homestead Exemption for Taxpayers Sixty-Five and Over or Those Totally and Permanently Disabled or Legally Blind

  • Age 65 or older on or before December 31 of the year before the tax year
  • Totally and permanently disabled as classified by a state or federal agency
  • Legally blind under South Carolina law

Applications go to the Berkeley County Auditor and must be filed before July 16 of the tax year you’re claiming. File later and the exemption applies to the next year instead. Once approved, it stays in place unless ownership or qualifying status changes; you don’t need to reapply annually.9South Carolina Department of Revenue. Exempt Property On a $200,000 home at the 4% ratio, the exemption removes $2,000 from assessed value and saves roughly $493 per year at the current unincorporated millage before credits.

Reassessment and Home Improvements

South Carolina reassesses property values on a five-year cycle. Berkeley County’s most recent reassessment was in 2024. State law caps any increase at 15% over the five-year cycle for most properties.10South Carolina Legislature. South Carolina Code 12-37-3140 – Determining Fair Market Value

Two situations break through that cap. New construction and additions are valued at full current market value in the year they first become taxable. And properties that change hands between reassessments are revalued at the transfer price. If you bought your home recently for well above what the previous owner paid, expect the assessment to reflect that sale price, not the capped figure.

For existing homes, pulling a building permit creates a public record that the county monitors. Projects that change layout, square footage, or core structure (adding a room, finishing a basement, converting a garage) are the ones most likely to raise the appraised value. Cosmetic work like paint or flooring generally does not. Timing matters: the county evaluates condition as of January 1 each year, so work finished before that date can hit the upcoming bill.

Payment Deadline and Late Penalties

Berkeley County property taxes for a given year are due by January 15 of the following year. Penalties accumulate in three stages after that date:11South Carolina Legislature. South Carolina Code 12-45-180 – Penalties on Delinquent Taxes

  • January 16 through February 1: 3% penalty
  • February 2 through March 16: an additional 7% (10% total)
  • After March 16: an additional 5% (15% total), and the account goes into tax execution

Once a bill goes delinquent after March 16, the treasurer transfers it to the Delinquent Tax Department. From there the county can seize the property, post levies, and sell it at public auction.12Berkeley County Government. Delinquent Tax Collector If a property is sold at delinquent tax sale, the owner has a redemption period, but the interest owed climbs from 3% in the first three months to 12% in the final three.

Appealing Your Assessed Value

If the county’s appraised value looks too high, you have the right to challenge it.13South Carolina Legislature. South Carolina Code 12-60-2510 – Property Tax Assessment Appeals In a reassessment year, once the assessor mails a notice of changed value, you have 90 days from the mailing date to file a written objection. Miss that window and the right to appeal that valuation is gone. In non-reassessment years, you can file a written objection at any time; filing before January 15 applies it to the current tax year, filing on or after that date pushes it to the next.

After you file, the assessor schedules a conference within 30 days. If that doesn’t resolve the dispute, a written protest and a series of 30-day response windows carry the case through the County Board of Assessment Appeals and, if needed, to an Administrative Law Judge. If an appeal runs past December 31, you have to pay at least 80% of the disputed tax to keep it active.

The strongest evidence is recent comparable sales showing homes like yours selling for less than your assessed value. Your own settlement statement, an independent appraisal, and photographs documenting condition problems the county wouldn’t know about all help.