Corporation tax liability calculator.

For the past few years, i have been using the marginial rate corporation tax calculator, on HMRC's website to calculate the corporation tax. Just input the accounting period, the profit etc and the liability is presented for you in a very useful format.

It is not working any more as i am unable to input the accounting year ended 30 April 09. For some reason it does not let me and an error message is shown. It is a shame because it was very useful tool.

Can any body recommend another such quick and easy calculator. I am not looking for T tax software.

SB