Prime Minister Narendra Modi on Sunday urged citizens with undisclosed income to come clean by September 30.

"I urge everyone to disclose undisclosed income by September 30. This is the last chance to avoid any problems," Modi said in his monthly radio address 'Mann Ki Baat'.

"We lose our peace by violating rules, why not give correct information about our income and assets to the government," he added.

He said the revenue department will soon unveil a mechanism to keep track of undisclosed income.

Modi said he had asked the officials from the income tax, revenue and excise departments to build an atmosphere of trust with tax payers.

He said people living in huge bungalows cannot have annual income of less than Rs 50 lakh.

"In a country where a government employee donates Rs 5,000 every month out of his monthly pension of Rs 16,000, nobody has a right to evade taxes."

The Prime Minister wondered how there could only be 1.5 lakh people with taxable income over Rs 50 lakh in a country of a billion people.