An income tax is a tax imposed on individuals or entities that varies with respective income or profits. Income tax generally is computed as the product of a tax rate times taxable income. Taxation rates may vary by type or characteristics of the taxpayer. The tax rate may increase as taxable income increases. The tax rate may increase as taxable income increases (referred to as progressive rates). The tax imposed on companies is usually known as corporate tax and is levied at a flat rate. Individual income is often taxed at progressive rates.
Goods and Services Tax (GST) is an indirect tax (or consumption tax) used in India on the supply of goods and services. It is a comprehensive, multistage, destination-based tax: comprehensive because it has subsumed almost all the indirect taxes except a few state taxes. Multi-staged as it is, the GST is imposed at every step in the production process, but is meant to be refunded to all parties in the various stages of production other than the final consumer and as a destination-based tax, it is collected from point of consumption and not point of origin like previous taxes.