Advance tax instalment schedule aligned for non-company assessees; presumptive-business taxpayers to pay full advance tax in a single instalment. The amendment substitutes sub section (1) of section 211 to align advance tax instalment requirements for non company assessees with the four instalment schedule applicable to companies, specifying progressive payable proportions at successive due dates and treating amounts paid by the financial year end as advance tax; it further provides that eligible assessees under presumptive business provisions must pay the entire advance tax in a single instalment by the final due date.