National Savings Certificates revised interest accruals and encashment amounts for certificates purchased on or after 1 March 2002. Prescribes revised interest accrual and encashment rules for National Savings Certificates purchased on or after 1 March 2002: sets Rs.169.59 as the maturity encashment amount for Rs.100 certificates, lists annual interest accruals for six years (Rs.9.20; 10.05; 10.97; 11.98; 13.09; 14.29) with reinvestment deemed through year five, and adds a table of graduated early-encashment amounts for encashments after three years (Rs.124.62 to Rs.149.83 for Rs.100) with proportionate rates for other denominations.