Having arrived in India on Sunday, he visited Agra on Monday. On Tuesday morning, there will be a ceremonial reception for Key by the his Indian counterpart Manmohan Singh at Rashtrapati Bhavan.
External Affairs Minister is also expected to call on Key, after which the state guest will visit President Pratibha Patil.
On Tuesday, Key and his delegation, which includes his spouse, the Trade Minister and a large business delegation, will attend a luncheon hosted the three apex business chambers - CII, FICCI and ASSOCHAM - in his honour.
In the evening, he would meet the Prime Minister of India and hold delegation-level talks.
There will be signing of some agreements and the Prime Minister Manmohan Singh, along with his spouse Gursharan Kaur, will host a banquet in the honour of the visiting dignitary and members of his delegation, a government spokesperson said.
On Wednesday, Key is expected to land in Mumbai where he would call on the Governor of Maharashtra who would also host a dinner for him.