Discontinuance of Salt Duty: duty not levied on salt manufactured or imported under central excise and customs tariff. Discontinuance of Salt Duty: no duty shall be levied under the Central Excises Act or the Customs Tariff Act in respect of salt manufactured in, or imported into, India for the year beginning on the first day of April, 1977, thereby suspending levy obligations under both statutory charging provisions for that fiscal year.