Prime Minister Manmohan Singh arrived here Thursday on a two-day official visit to Thailand.
India and Thailand are to seven treaties later Thursday, Ministry of External Affairs (MEA) spokesman Syed Akbaruddin told IANS.
Both countries will also sign an extradition treaty.
Another treaty to be conclded Thursday will be on the sentences of prisoners from both countries. Under this, a prisoner of one country serving a prison sentence in the other will have the option of serving the term in his home country.
Other accords relate to culture, space and issues of mutual interest.
Manmohan Singh and Thai Premier Yingluck Shinawatra will review the development of existing bilateral cooperation and also explore new areas of cooperation.
The Indian prime minister flew to Thailand on the conclusion of a three-day official visit to Japan.
He was received at the Don Muang International Airport here by Thai Deputy Prime Minister Yukol Limlamthong, who also serves as minister for agriculture and cooperatives, and his wife. Minister for Information and Communications Technology Group Captain Andith Nokornthap was also present.
Manmohan Singh will return to India Friday afternoon.