HMRC significantly underestimated additional tax revenue from online marketplace VAT liability legislation.
In January 2021 government introduced legislation making online marketplaces liable for VAT from overseas sellers, resulting in £1.5 billion of additional tax a year. This is five times greater than HMRC estimated at the time.15 We asked HMRC why this was, and it explained that the volume of online sales …
Government response. HMRC will analyze the difference between original and current costings of the 2021 Online Marketplace Liability policy, and update its estimate of tax lost from VAT non-compliance, providing findings when sufficiently robust, with an update in September 2025 and a …
HM Treasury