AutoTaxCalculatorHow much is Charleston County vehicle tax?
Charleston County vehicle tax = value × 6% × your district's millage ÷ 1,000. For a car valued at $20,000, that's about $256 on Capers and Dewees Islands, $316 in Mt. Pleasant, $361 in the City of Charleston and $385 in Lincolnville, before any credits.
Every vehicle in the county pays the countywide levy of 218.8 mills in 2026 (slightly less on Capers and Dewees Islands). On top of that, cities, towns, fire districts and public service districts add their own millage. That's why Charleston County car taxes can differ by more than $100 a year between two neighbors a few miles apart.
2026 millage by tax district
| Tax district | Combined mills | Tax on a $20,000 car |
|---|---|---|
| Town of McClellanville (TD 11) | 269.8 | $323.76 |
| Awendaw McClellanville Fire District (TD 12, 13, 14, 27) | 258.3 | $309.96 |
| Town of Awendaw (TD 15) | 282.3 | $338.76 |
| Town of Mt. Pleasant (TD 21) | 263.1 | $315.72 |
| Moultrie (TD 22) | 218.8 | $262.56 |
| Town of Sullivan's Island (TD 23) | 275.0 | $330.00 |
| City of Isle of Palms (TD 24) | 240.7 | $288.84 |
| Capers / Dewees Islands (TD 25) | 213.4 | $256.08 |
| East Cooper Fire District (TD 26) | 233.6 | $280.32 |
| James Island PSD (TD 31) | 281.9 | $338.28 |
| James Island (TD 32) | 218.8 | $262.56 |
| City of Folly Beach (TD 33, 37) | 251.3 | $301.56 |
| Town of James Island (TD 38) | 297.9 | $357.48 |
| City of Charleston (TD 34, 35, 36, 52, 63, 71, 72, 99) | 300.8 | $360.96 |
| North Charleston PSD (TD 41) | 313.6 | $376.32 |
| Goose Creek area, Northern Charleston Fire District (TD 42) | 234.6 | $281.52 |
| City of North Charleston (TD 43) | 310.3 | $372.36 |
| Town of Lincolnville (TD 44) | 320.5 | $384.60 |
| North Charleston area, Northern Charleston Fire District (TD 45) | 234.6 | $281.52 |
| Town of Summerville (TD 47) | 284.8 | $341.76 |
| Summerville area, Northern Charleston Fire District (TD 48) | 234.6 | $281.52 |
| St. John's Fire District (TD 51) | 249.8 | $299.76 |
| Seabrook Island (TD 53) | 249.8 | $299.76 |
| Kiawah Island (TD 54) | 249.8 | $299.76 |
| Town of Rockville (TD 55) | 249.8 | $299.76 |
| West St. Andrew's Fire District (TD 61) | 243.1 | $291.72 |
| St. Andrew's PSD (TD 62) | 317.5 | $381.00 |
| Town of Hollywood (TD 80) | 281.2 | $337.44 |
| Edisto Island (TD 81) | 281.2 | $337.44 |
| St. Paul's Fire District (TD 82) | 281.2 | $337.44 |
| Town of Meggett (TD 83) | 281.2 | $337.44 |
| Ravenel (TD 84) | 281.2 | $337.44 |
Amounts are before credits. Your tax notice shows your district code (TD) and the exact millage that applies.
How Charleston County car taxes are calculated
- Value: the Auditor assigns the vehicle a value for the tax year from the state's vehicle value guide.
- Assessment: personal vehicles are assessed at 6% of that value.
- Millage: the assessed value × your district's combined millage ÷ 1,000.
- Credits: Charleston County applies a tax credit factor (0.0009 in 2026), and several municipalities have their own credit factors, which reduce bills where they apply.
Example: a $20,000 car in the City of North Charleston
- Assessed value: $20,000 × 6% = $1,200
- Millage: 218.8 countywide + 91.5 city = 310.3
- Tax: $1,200 × 310.3 ÷ 1,000 = $372.36 before credits
How to pay vehicle tax online in Charleston SC
The Charleston County Treasurer mails your vehicle tax notice before your registration renewal is due. To pay vehicle taxes online in Charleston SC, you can pay it through the county's tax payment portal using the notice or account information, or by mail or in person. South Carolina vehicle taxes are due by the end of the month your registration expires, and SCDMV won't renew the registration until the tax is paid. Card payments usually carry a processing fee.
Just bought a car? The one-time infrastructure maintenance fee (5%, maximum $500) is paid at the dealer or SCDMV. The county vehicle tax follows on your first notice. See the South Carolina vehicle tax calculator.
Lowering or correcting your bill
- Wrong tax district: if your notice puts the car in a district you don't live in, contact the Auditor. The difference between districts can exceed 100 mills.
- Sold or moved: tell the Auditor and turn in your plate if you've sold the car or moved out of the county, so you're billed only for the time you owned it here.
- Exemptions: certain disabled veterans and others qualify for vehicle tax exemptions, approved through the county and SCDOR.
Frequently asked questions
What is the vehicle tax rate in Charleston County?
6% of the vehicle's value times your district's millage. In 2026, combined millage runs from 213.4 to 320.5 mills.
Is Charleston County car tax the same as real estate tax?
The millage is the same, but vehicles are assessed at 6% of value, while an owner-occupied home is assessed at 4% and gets school operating tax relief. So vehicles pay proportionally more.
When is my Charleston County vehicle tax due?
By the end of the month your registration expires.
Where can I get an official estimate?
The Charleston County Auditor's office can confirm your vehicle's value and district. Your tax notice shows the exact amount.
Sources
- Charleston County Auditor: 2026 millage levy card
- Charleston County Auditor: 2026 millage breakdown
- SC Department of Revenue: Revenue Ruling #25-2 (IMF)
This calculator gives an estimate. Your Charleston County tax notice shows the exact amount. How we calculate