Net fiscal contributions by race for 2023/24, direct data from UK government.

Note that the data is equivalized (adjusted for household size/composition), meaning total government spending on minority groups (who have larger households) is likely significantly understated.

White households are smaller and older, which reduces their apparent net contribution (due to age-specific healthcare allocations).

As far as I know, the raw data is unavailable.

Source: https://www.ons.gov.uk/peoplepopulationandcommunity/personalandhouseholdfinances/incomeandwealth/datasets/theeffectsoftaxesandbenefitsonhouseholdincomefinancialyearending2014