1956, 18 April - Exchanged Letters for opening of Trade Offices of Bulgaria in New Delhi, Calcutta and Bombay.

1963, 20 February, signed in New Delhi - Agreement for Cultural Relations between the Governments of Bulgaria and India; entered into force on 26.08.1963.

1967, 2 May, signed in New Delhi - Agreement for Economic and Technical Cooperation between the Governments of Bulgaria and India; entered into force on 02.05.1967.

1973, 29 November - Exchanged notes between the Governments of Bulgaria and India for establishing a Joint Commission for Economic, Scientific and Technical Cooperation.

1975, 16 January, signed in New Delhi - Protocol between the Governments of Bulgaria and India concerning Equivalence of Degrees and Diplomas, Awarded by Secondary Schools, Universities/Institutions of Higher Education, in Bulgaria and India.

1976, 18 November, signed in New Delhi - Agreement on Merchant Shipping between the Governments of Bulgaria and India; entered into force on 03.08.1978.

1992, 16 June, signed in New Delhi - Air Services Agreement between the Governments of Bulgaria and India; entered into force on 10.09.1993.

1993, 13 July, signed in Sofia - Memorandum between the Governments of Bulgaria and India for Cooperation between the Defence Ministries of both Countries.

1994, 26 May, signed in Sofia - Agreement between the Governments of Bulgaria and India for Cooperation in the area of Quarantine & Plant Protection; entered into force on 22.01.1995.

1994, 26 May, signed in Sofia - Veterinary & Sanitary Convention between the Governments of Bulgaria and India; entered into force on 22.01.1995.

1994, 26 May, signed in Sofia - Agreement between the Governments of Bulgaria and India on Cooperation in Tourism; entered into force on 26.05.1994.

1994, 26 May, signed in Sofia - Agreement between the Governments of Bulgaria and India for Cooperation in combating organized crime, international terrorism and illicit trafficking in narcotic drugs and psychotropic substances; entered into force on 10.01.1995.

1994, 26 May, signed in Sofia - Convention between the Governments of Bulgaria and India for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes on Income and on Capital; entered into force on 23.06.1995.

1994, 26 May, signed in Sofia - Protocol for Consultations and Cooperation between the Foreign Ministries of Bulgaria and India; entered into force on 26.05.1994.
1996, 4 December, signed in New Delhi - Agreement between the Governments of Bulgaria and India on Trade and Economic Cooperation; entered into force on 16.08.1997.

1997, 8 September, signed in Sofia - Programme for Cooperation in the field of Science, Education and Culture between the Governments of Bulgaria and India for the period 1997-1999.

1998, 26 October, signed in New Delhi - Agreement between the Governments of Bulgaria and India on Promotion and Protection of Investment; entered into force on 23.09.1999.

1998, 26 October, signed in New Delhi - Agreement on Mutual Cooperation between the International Fair Inc. Plovdiv and ITPO; entered into force on 26.10.1998.

1998, 26 October, signed in New Delhi - MOU between the Bulgarian Export Promotion Centre, Ministry of Trade and Tourism, Sofia, and the National Centre for Trade Information (NCTI), Ministry of Commerce; entered into force on 26.10.1998.

1998, 29 October, signed in Mumbai - MOU between the Bulgarian Industrial Association and the CII; entered into force on 29.10.1998.

2000, 10 November, signed in New Delhi – Agreement between the Governments of Bulgaria and India for cooperation in the field of Science and Technology.

2000, 10 November , signed in New Delhi – Work Plan for the biennium 2001-2002 between the Bulgarian National Centre for Agrarian Sciences and the Indian Council of Agricultural Research, validity extended till 2004.

2001, 14 September, signed in New Delhi - Programme for Cooperation in the field of Science, Education and Culture between the Governments of Bulgaria and India for the period 2001-2003. (Both sides have agreed to the extension of the existing CEP for another one year /till 31.12.2004/ or until the formulation of a fresh CEP.)

2002, 8 April, signed in Sofia – Programme of Cooperation in Science and Technology between the Governments of Bulgaria and India for the period 2002-2004.

2002, 23 December – Cooperation Agreement between Bulgarian Export Insurance Agency /BAEZ/ and Export Credit Guarantee Corporation of India /ECGC/.

2003, 23 October, signed in Sofia – Protocol between the Ministry of Youth and Sports of Bulgaria and the Ministry of Youth Affairs and Sports of India for Cooperation in the field of Youth Affairs and Sports.

2003, 23 October, signed in Sofia –Treaty on Extradition between the Governments of Bulgaria and India.

2003, 23 October, signed in Sofia – Memorandum of Understanding between the Bulgarian Association of Information Technology and the Electronics and Computer Software Export Promotion Council of India.

2004, 28 July, signed in New Delhi – MoU for Cooperation between the Diplomatic Institute of the Ministry of Foreign Affairs of Bulgaria and the Foreign Service Institute of the Ministry of External Affairs of India was signed during the visit.

2004, 17-19 November, signed in New Delhi – MoU for Cooperation between the Bulgarian Chamber of Commerce and Industry and the Federation of Chambers of Commerce and Industry of India (FICCI).

2005, 5 December, signed in New Delhi - Programme for cooperation in the field of Science and Technology for the period 2005 – 2007.

2006, 31 May, signed in Sofia – MoU for Cooperation in the Field of Information and Communication Technologies between the Bulgarian State Agency for Information Technology and Communications and the Ministry of Communications and Information Technology of India.

2007, 11 September, signed in New Delhi - Agreement of Cooperation between Sofia University “St. Kliment Ohridski” and the University of Delhi; entered into force on 11.09.2007.

 2007, 11 September, signed in New Delhi - Agreement of Cooperation between 79th Indira Gandhi High School, Sofia, Bulgaria, and Georgi Rakovski School, New Delhi, India; entered into force on 11.09.2007.

2007, 12 September, signed in New Delhi - Agreement on Economic Cooperation between the Government of the Republic of Bulgaria and the Government of the Republic of India; entered into force on 17.04.2008.

2007, 12 September, signed in New Delhi - Treaty on Mutual Legal Assistance in Criminal Matters between the Republic of Bulgaria and the Republic of India; entered into force on 09.10.2008.

2007, 12 September, signed in New Delhi - Treaty on Mutual Legal Assistance in Civil and Commercial Matters between the Republic of Bulgaria and the Republic of India.

2007, 12 September, signed in New Delhi - Treaty on the Transfer of Sentenced Persons between the Republic of Bulgaria and the Republic of India; entered into force on 09.10.2008.

2007, 12 September, signed in New Delhi - Protocol between the Government of the Republic of Bulgaria and the Government of the Republic of India for Amending the Agreement between the Government of the Republic of Bulgaria and the Government of the Republic of India for the Promotion and Protection of Investment, signed in New Delhi on 26 October 1998; entered into force on 12.05.2008.

2007, 12 September, signed in New Delhi - Protocol of Intent on Labour Relations, Employment and Social Security between the Ministry of Labour and Social Policy of the Republic of Bulgaria and the Ministry of Labour and Employment of the Republic of India;

2007, 12 September, signed in New Delhi - Memorandum of Understanding between the Bulgarian Small and Medium Enterprises Promotion Agency and the National Small Industries Corporation Ltd., India, regarding Cooperation in the field of Small and Medium-sized Enterprises Development; entered into force 12.09.2007 with 3-year validity.

2009, 3 March, signed in New Delhi - Agreement on Exemption of Visa Requirement for Holders of Diplomatic and Official / Service Passports; entered into force on 02.07.2009.

2009, 3 March, signed in New Delhi - Programme for Cooperation in the field of Science, Education and Culture for the period 2009 – 2011.

2009, 14 May, signed in Sofia - Programme of Cooperation in Science and Technology between the Government of the Republic of Bulgaria and the Government of the Republic of India for the period 2008-2010.