Interest-tax estimates: revised proforma mandated and strict submission deadlines imposed to ensure timely Budget reporting. The Board mandates use of a simplified proforma for 6 monthly and 9 monthly Budget Estimates of Interest tax following account rationalisation and cessation of the levy on interest to scheduled banks after 28 February 1978. The proforma consolidates advance tax, ordinary collections (including self assessment), miscellaneous collections (penalties and interest), refunds and net Interest tax from banks, and requires prior year actuals, current year budget and revised estimates, period actuals and remarks. Strict submission deadlines are imposed to ensure timely transmission to the Department of Economic Affairs.