Charlestonculture & etiquette

South Carolina's constitution sets the assessment ratio at 4% for an owner-occupied primary residence and 6% for a second home, a rental or any other real property. The 4% ratio is not automatic — you apply to the county assessor and prove it, and Charleston County's deadline is normally 15 January. It also brings an exemption from the school operating millage, which is a large share of the bill. Two identical houses on the same street can therefore carry very different tax bills depending on whether the owner filed a form.

South Carolina taxes personal motor vehicles annually as property, at a 6% assessment ratio, billed by the county rather than the state. The SCDMV will not register or renew a vehicle until you produce the paid receipt from your county treasurer. Newcomers from states with no vehicle tax — most of the west — arrive expecting a flat registration fee and meet a recurring bill instead. Budget for it as an annual cost, not a one-off.

Charleston floods from the sky, the sea and the water table, sometimes at once. FEMA's Risk Rating 2.0 prices flood insurance by the individual building rather than by zone, so two houses a block apart can differ enormously. Get a flood quote for the exact address before you commit to it, whether you are buying or renting — a lender in a special flood hazard area will require the policy, and a renter needs contents cover the landlord's policy will not provide.

SCDMV gives a new permanent resident 45 days to exchange an out-of-state licence or ID, and 45 days to transfer vehicle registration; late registration carries a penalty on top of the normal fee. You surrender the old licence when you take the South Carolina one. Military members and students living here temporarily are not required to convert.

H.4216 was signed on 30 March 2026 and applies from the 2026 tax year — the return due 15 April 2027. It sets 1.99% on income under $30,000 and 5.21% less $966 above that, decouples South Carolina from federal standard and itemised deductions, and makes federal adjusted gross income rather than federal taxable income the starting point for the state return. Anyone comparing an offer against last year's 6% top rate is comparing against a schedule that no longer applies.

Coverage here comes from an employer or from HealthCare.gov, the federal marketplace. South Carolina is one of the states that did not take Medicaid expansion, which means adults whose income falls below the federal poverty level can be too poor for a marketplace subsidy and still ineligible for Medicaid. If your income will be low or irregular in the first year — freelance, part-time, a spouse not yet working — model it before you assume you are covered.