"The new notes should have been printed in advance. There was no ground work before announcing the decision," he told reporters here.
"There is no cash in ATMs, people are facing hardship in getting the money. The government had never thought of this situation. There was no planning and that has done damage to the common people," he said.
On the incidents of terror attacks, he said the government should refrain from making mere statements and need to work.
"We are getting news on an attack, which is reoccurring. Now, action is needed not statement (or bhashan)," he said.
Tharoor also welcomed women's re-entry to Mumbai's Hazi Ali dargah today.
"The Constitution is supreme and in democracy, the right of equality should be properly followed," he said.
Tharoor was in the city for the launch of his book 'An Era of Darkness'.