He also attacked those opposing the Goods and Services Tax (GST), saying they were "insulting" Parliament.
In an interview to Times Now news channel, he compared the new law with that for income tax, asking how many changes and improvements have been made in the income tax law since its inception in 1961.
"The GST too is a new system. I have been saying this since the day one that people will take some time to adjust to the new system," he said. "We will have to improve wherever there are loopholes."
Modi said, "We are using all our knowledge in that direction. Everyone should make combined efforts for good things. Will you only see your political greed in everything?"
The rollout of the GST, which subsumed more than a dozen central and state levies, from July 1 has been far from being smooth with problems ranging from increased tax rates on some items and services to a higher compliance burden for businesses and IT issues.
In the interview, transcript of which was provided by Times Now, Modi said no one has actually opposed the GST and everyone theoretically accepts the concept of one-nation-one- tax, which Parliament approved after debating for seven years.
Without taking any names, he said those who previously were in the government are now "opposing the GST and are foul mouthing it."
"They are insulting the collective strength of Parliament and they are insulting the temple of democracy. This doesn't suit them," he said.
Modi said all political parties came together and created the GST Council, the highest decision-making body for the new indirect tax regime.
The panel has equal representation from all states and they have equal weightage as that of the Centre. All decisions are taken through consensus.
"Every decision is unanimous. Never has the opportunity of a vote arisen," he said, adding that chief ministers of opposition parties have also participated in the decision- making process.
"While inside the meeting, everyone is laughing, playing around and taking a decision. But once the meeting is over, they come out and show anger, aggression and threats," the prime minister said.
Similar is the case with Parliament where debates are open and conducted harmoniously but outside anger is shown, he said.
"People of this country know this very well," he said.
Disclaimer: No Business Standard Journalist was involved in creation of this content
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
