From April 2011 rates of many benefits and Tax Credits will increase; this will mainly be in line with the 3.1% annual increase in the CPI to September 2010. Exceptionally, this year the basic state retirement pension will be increased by the 4.6%. The Government is committed to a "triple lock" for uprating the basic state pension, which means in future it will be increased by the highest of the increase in earnings, prices (as reflected in the CPI increase) or 2.5%. This year, to ensure the basic state pension is in line with the previous uprating rules, the increase in the RPI is being used. There is a requirement for Pension Credit to be increased in line with earnings. However, to ensure the least well-off pensioners benefit from the triple guarantee, the standard minimum income guarantee in Pension Credit will increase in April 2011 by the cash rise in a full basic State Pension. This note sets out the basis for the April 2011 uprating. It focuses on the Retirement Pension and Pension Credit but also contains a summary of the main benefit and tax credit rates before and after the uprating. Child Benefit is frozen until April 2014.