The Soft Drinks Industry Levy (SDIL), often referred to as the 'sugar tax', has reached a plateau in its revenue generation, despite significant success in encouraging manufacturers to reduce sugar content in their products. A new analysis from the Institute for Fiscal Studies (IFS) reveals that annual revenue from the levy has stabilised at approximately £300 million, after an initial period of growth following its introduction in 2018.
The primary aim of the SDIL was to tackle rising obesity levels by incentivising soft drink companies to reformulate their products to contain less sugar. The IFS report confirms that this objective has largely been met, with the average sugar content in soft drinks falling by nearly a third since the levy was implemented. This shift means that over 90% of soft drinks currently sold in the UK now fall below the thresholds for the levy, making them exempt from the tax.
This outcome presents a notable trade-off between the levy's public health ambitions and its role as a revenue-generating tool for the Treasury. While the government has successfully driven down sugar consumption in this category, the very success of the policy in changing industry behaviour has curtailed its ability to generate substantial income. The £300 million collected annually is a relatively modest sum in the context of broader government finances, such as the NHS budget.
The IFS suggests that for the levy to generate significantly more revenue, the government would need to consider lowering the existing sugar thresholds. Such a move would bring more products back under the scope of the tax, potentially increasing prices for consumers but also further pushing manufacturers to reduce sugar content. However, any decision to adjust these thresholds would likely face scrutiny from both industry stakeholders and consumer groups, balancing health objectives with cost-of-living concerns.
The SDIL applies to soft drinks containing more than 5 grams of sugar per 100ml (taxed at 18p per litre) and those with more than 8 grams of sugar per 100ml (taxed at 24p per litre). Pure fruit juices and milk-based drinks are exempt. The revenue generated from the levy is ring-fenced to fund school sport and breakfast clubs, making its financial stability a consideration for these programmes.