You can have £10,000 in savings and still qualify for pension credit. After that every £500 is classed as £1 income. Pension credit is based on the amount of income you have each week and this can vary depending on your age as there is guaranteed pension and savings credit. You would have to calculate your weekly income and work out the income from savings as well. It also depends if you are in receipt of any disability or attendance allowances. I don't know if this is helpful to you, but in some places age concern and the pension service will do a benefit check for you.