Hi,
I understand that Inkscape is great software and it is FREE and i have started using this software also.....i am providing commercial services like graphics designs, can i use this software for business purpose or is there any license etc....i do creative work like mentioned at http://bhameshwarigraphics.com, will i be needing some type of license to create files for business purpose...

You do not need a license to use Inkscape for any reason.

You may need a license to run a business, depending on where you are located.

Hope this answers your questions: https://inkscape.org/about/license/