Interim tax deposit requirement for quarterly filers permits deposits in the first two months based on prior return balances. Notification allows quarterly filers to discharge interim tax in the first and/or second month of a quarter by depositing into the electronic cash ledger an amount equal to thirty five per cent of the tax liability from the preceding quarter's return (or the last month of the immediately preceding quarter for monthly filers), provided the person has furnished the return for a complete preceding tax period; no deposit is required where electronic cash or credit ledger balances are adequate or liability is nil.