NEW DELHI: An average Indian household is saving up to Rs 320 every month on purchase of commonly used goods after GST implementation, a finance ministry source said, citing an analysis of consumer expenditure data. The GST was rolled out on July 1, 2017, amalgamating 17 different central and state taxes including excise duty and, sales tax or VAT The GST has not just made India one market by levying uniform tax rates on goods and services, it has also done away with tax-on-tax prevalent in the previous system. Additionally, GST rates have been lowered on an array of commonly used goods and services that has resulted in monthly savings for consumers, the source said. An analysis of household expenditure pre- and post-GST rollout shows tax rates have come down on as many as 83 items — including on food and beverages, as well as daily use goods like hair oil, toothpaste, soap, washing powder and footwear. On a monthly spending of Rs 8,400 on these items, the tax paid under GST is Rs 510. This, compared to the Rs 830 tax charged previously, results in a saving of Rs 320.Previously, the central government would levy excise duty when a good is produced in a factory and the state governments would charge VAT. This meant that the consumer not just paid VAT on the basic price of the good but also on the excise duty charged by the Centre.With the introduction of the new indirect tax, that pattern has been eliminated. The GST is levied at the consumption end or when the final consumer buys the product or service.