The Purpose of this research was to investigate the financial service tools for financial planning on the internet. First of all, what kinds of financial service tools were available was looked into and secondly, the sufficiency and the validity of the tools were examined. The deep search of 20 financial service related web-sites was confirmed on June of 2002. The results revealed that there were a variety of calculator for banking and investing and other planning tools. The financial service tools for financial planning looked somewhat abundant, however, the validity of the tools was not high sufficient.