Notice and timing
How delinquency is handled
Grace period after the due date
No universal 2026 late-grace day count was published. During the 2026 CIS transition the City states that no late fees apply; ordinary account rules should be confirmed after the transition period.
Late-fee calculation
Kingsport’s current 2026 transition notice states that no late fees are being charged during the new-system transition. The reviewed page does not publish the ordinary post-transition late-fee percentage or fixed charge.
Disconnection timeline
The reviewed current payment page does not publish a complete calendar from missed due date to disconnection; the account statement and City notices control. The new CIS transition temporarily suspends late-fee assessment but does not waive ordinary account balances.