RPI is used to raise fares and disadvantages the public, whose wages and prices are raised in relation to CPI. Ministers have not had responsibility for wages or fares since privatisation of the ...

RPI generally runs at about 1% higher than CPI and is currently 2.8%, compared to a CPI of 1.9%. With annual rail fare increases calculated using RPI it is unsurprising passenger groups have ...

Given its age, RPI can give us a sense of how prices have changed since the 1950s, but CPI replaced RPI as the UK’s official measure in 2003. The Bank of England’s 2% target relates to CPI.

The 3.4% is the Consumer Prices Index (CPI) rather than the RPI. The main difference is that the CPI does not include any housing costs, such as the effect of mortgage rates or council tax.

With inflation in the headlines, you’ve probably seen the acronyms CPI and RPI all over the place. But what’s the difference between the two and why does it matter?

The OBR forecast that by 2016 the gap between CPI and RPI could be as high as 1.8 percentage points, predicting that CPI will go down to 2% by then while RPI stays higher at 3.8%.

What's the biggest cut George Osborne has made as Chancellor? Scroll through the Budget Red Book and the answer may surprise you. There's the removal of child benefit from higher rate taxpayers, ...

The CPI covers certain charges and fees which are excluded from the RPI which includes stockbroker fees, university accommodation fees, foreign student tuition fees and unit trust fees.

Consumer Prices Index and Retail Prices Index - what is the difference and what exactly does inflation tell us about the state of the economy?

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In this year's Budget the government published estimates suggsting that the widening gap between CPI and RPI would push its annual saving up from £7.56bn in 2014-15 to £10.6bn in 2015-16.