SAARC & BRIC – Quantified analogy of prevailing Tax Systems?

In the Scheme of Indian Income tax laws,hence rules,What is the prevailing exemption limits, provisions & limits of PF,PPF,NPA others benefits for any citizen based on the income bands. Where can one have access to an analyst report on the income levels and the income limits based Tax Rates,Exemptions/ Provisions between & within the SAARC & BRIC Nations.