Why is my signature needed on a white paper? Fincash.com February 20, 2018 11:23 Updated Signature done on a white colored paper ensures a clear picture of the signature and helps in easier identification. Related articles Why do you need my PAN card and Bank account? Why do we need a cancelled cheque? Why Bank Details are required? How can I register on Fincash? Comments 0 comments Please sign in to leave a comment.