Advance tax instalment schedule revised: companies pay across instalments; other assessees in fewer instalments with March balancing. The amendment replaces the provision on advance tax instalments, requiring companies to pay advance tax in four phased instalments across the financial year and assessees other than companies to pay in three phased instalments, each instalment representing a cumulative portion of the current income-based advance tax, with the remaining liability payable in the final instalment; payments made on or before the last day of the financial year are treated as advance tax for that year.