At a media briefing, he also recalled his party's unprecedented win in Uttar Pradesh and Uttarakhand assembly polls following the demonetisation decision and noted that it had swept "trading hubs" in UP to underline popular support to note ban.
"Today's results (in UP) have only reaffirmed it," he said.
The ruling BJP on Friday forged ahead of its rivals, leading on 14 of the 16 mayoral seats in Uttar Pradesh where the civic bodies polls were held in three phases, according to trends from these seats in the first four hours of counting of votes.
"GST has made doing business and trade very easy. The market size for every trader has grown. Now the whole country is his market," Jaitley said.