Interest on delayed tax payment may be charged at notified rates, with higher rates for undue input tax credit claims. A person liable to pay tax who fails to pay within the prescribed period must pay interest for the period unpaid at a rate, not exceeding eighteen per cent, as notified by the Government on the Council's recommendations, calculated in the prescribed manner from the day succeeding the due date. Undue or excess claims of input tax credit under section 42(10) or undue excess reductions in output tax under section 43(10) attract interest at a rate, not exceeding twenty four per cent, as may be notified by the Government on the Council's recommendations.