You should tell your local council as soon as possible about changes that could affect your Council Tax Reduction, such as moving home, a change in household members, income, benefits or savings. The exact reporting rules and deadlines depend on your council’s local scheme, and changes to Universal Credit may not automatically update your Council Tax Reduction. Use your council’s online service or contact its benefits team, and keep confirmation plus any requested evidence. Your award may then be reassessed, and late reporting could lead to an overpayment that the council may ask you to repay.