Union County, South Carolina property-tax payment and appeal deadlines
Tax bills, payment rules, and valuation-review windows are controlled by the local jurisdiction and the governing state framework. The reviewed record below separates published figures from items that still require confirmation with Union County Assessor's Office.
Rate context
Confirmno single countywide effective average published; South Carolina millage varies by county, municipality, school, fire, and other taxing districts.
Statement mailing
Confirmofficial county sources reviewed do not publish a specific 2026 property-tax bill mailing date.
Payment deadline
Published2026 real-property taxes are due January 15, 2027; 3% penalty January 16–February 1; additional 7% (10% total) February 2–March 16; additional 5% (15% total) after March 16, with delinquent transfer after March 17, under South Carolina Code §12-45-180 and the county tax schedule.
Valuation protest
PublishedWithin 90 days of the 2026 assessment notice; if no notice is issued, file by January 15, 2027. Union County's informal appeal form and notice control the exact date.
Do not assume a grace period.
The reviewed record identifies the payment timing above but does not establish a universal penalty schedule for this page. Late charges, interest, collection costs, tax-sale procedures, and lien or foreclosure timelines can depend on state law and the local collector’s process. If the deadline is close or a balance is delinquent, contact the tax collector directly and request the current payoff amount in writing.
Treat a published payment deadline as a hard operational date and retain your receipt or confirmation number.
From assessment to collection
01Valuation and notice
Review the assessment notice as soon as it arrives. The protest window may run from the notice date rather than from the payment due date.
02Statement and account review
Match the tax statement to the parcel or account number and confirm exemptions, assessed value, taxing units, credits, and balance.
03Payment confirmation
Use the official collector channel, then save the receipt, transaction reference, and date posted. A bank submission is not always the same as a county posting date.