VAT has been implemented for states like Gujarat, MP, Rajasthan, Chattisgarh and Jharkhand. You can find state specific files on this link page. Download the pdf files availablle on this link page and find out the latest. Alternatively copy paste the link below. http://www.tallysolutions.com/vat/whatsvatimplementing.shtml

Update to Tally Prime
Things you should know before updating your Tally to Tally Prime..