Income-tax rates and surcharge framework set out, defining slab, surcharge and super tax mechanisms for taxpayers. Statutory schedule prescribes graduated income tax rates and distinct slab structures for individuals, families, firms, companies and local authorities, together with layered surcharge components (Union surcharge, special surcharge and an additional residual surcharge) subject to non levy thresholds and maximum limits; Part II imposes a progressive super tax with surcharge and company rebate mechanisms; Part III prescribes rates for tax deduction at source for salaries, dividends, royalties and other incomes, including differentiated treatment for non resident or non arranged companies.