UK car tax error overstated inflation by 10 basis points, ONS says
- In June 2025, the UK’s statistical authority revealed that inflation for April had been slightly overestimated due to incorrect vehicle tax data used in the calculations.
- The overstatement occurred because the Department for Transport supplied incorrect vehicle excise duty data that included too many taxed vehicles in their first registration year.
- This vehicle tax data forms part of the input used to calculate Consumer Prices Index and Retail Prices Index inflation figures, which showed a rise from 2.6% in March to 3.5% in April.
- The ONS determined CPI and RPI inflation in April were both overstated by 0.1 percentage points but stated it would not revise the published figures as no other periods were affected.
- This clarification suggests the headline inflation rate for April was slightly lower than initially reported but confirms the overall upward trend in inflation that month.
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UK car tax error overstated inflation by 10 basis points, ONS says
An error in car tax data provided by the British government caused the consumer price inflation rate to be overstated by 0.1 percentage points for the year to April, the Office for National Statistics (ONS) said on Thursday.
·United Kingdom
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ONS admits April inflation figure was too high after vehicle tax data error
The ONS said it would not be revising the official published figures.
·Cumbria, United Kingdom
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