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  • Title: Price elasticity and affordability of aerated or sugar-sweetened beverages in India: implications for taxation.
    Author: John RM, Tullu FT, Gupta R.
    Journal: BMC Public Health; 2022 Jul 17; 22(1):1372. PubMed ID: 35842635.
    Abstract:
    BACKGROUND: The sale of aerated or sugar-sweetened beverages (ASBs) has been consistently growing in India which has also experienced a major increase in non-communicable diseases. This study estimates the price elasticities of ASBs by different household-income groups in India and examine the trends in their affordability. METHODS: The price elasticity for ASBs were estimated using a nationally representative household sample survey on consumption of ASBs in India and with Deaton's method which is robust to self-reported household expenditure surveys. Trends in affordability of ASBs were estimated using relative income price (RIP) which measured the proportion of per capita gross domestic product (GDP) required to purchase 100 L of ASBs in a given year. The elasticity parameters were used to estimate the incremental tax needed for a 10% reduction in ASB consumption. RESULTS: The own-price elasticity of ASBs is - 0.94 in the overall sample and varied between - 1.04 to - 0.83 from low- to high-income households. There has been an annual average decline of about 6.8% in RIP of ASBs or an increase in their affordability over the last 13 years. Increasing the compensation cess on ASBs under the current Goods and Services Tax (GST) to 29%, will have the effect of decreasing ASB consumption by 10% and increasing the tax revenue by about 27%. CONCLUSION: The taxation policy on ASBs in India has largely been ineffective at increasing the real retail prices of ASBs as a result of which ASB consumption grew. ASBs should be classified along with other unhealthy products like tobacco and alcohol as demerit products for the purpose of taxation and their taxes should be regularly increased sufficiently enough to compensates for both general price inflation and income growth so as to decreases their affordability.
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