** Shares of Tyro Payments TYR.AX drop 7.1% to A$0.855, set for their worst day since June 5, if trend holds
** Earlier in the session, the payments-solutions provider lost as much as 14%
** The Reserve Bank of Australia proposes to remove credit and debit card surcharges - fees paid by customers on transactions
** The RBA's decision covers transactions under EFTPOS - Electronic Funds Transfer at Point of Sale - terminals, also used by TYR to provide payment services
** Co generates revenue from surcharges paid by customers for processing payments through its platform
** About 7.5 mln shares change hands, over 3x the 30-day avg trading volume of about 2.2 mln
** YTD, stock up 6.8%, including the session's losses
(Reporting by Shruti Agarwal in Bengaluru)
((Shruti.Agarwal@thomsonreuters.com))