10 Highlights

• Martin Lewis warns savers with over £10k on tax liabilities.
• Higher interest rates bring savings tax back into focus.
• • Council Tax bands might be incorrect; households can challenge.
  • Tesco Clubcard holders must use vouchers by month-end.
  • Lewis suggests a trick to extend Tesco voucher validity.
  • Incorrect Council Tax bands since 1991 could mean overpayments.
  • Higher rate taxpayers need to check their savings interest.
  • Lewis advises quick action in light of Tesco's November deadline.
  • Financial Conduct Authority expands car finance complaints.
  • Martin Lewis outlines process for challenging Council Tax.