| Registration Certificate No. with date & Place (where ever applicable) | Number | Date | Place |
| a) Society Registration | S/68335 | 14.08.1991 | Kolkata |
| b) FCRA registration | 147120405 | 29.01.1992 | Delhi |
| c) Income Tax registration u/s 12A | DIT(E)/8E/254/
92-93/2905-07 |
31.12.1993 | Kolkata |
| d) 80G registration | DIT (E)/8E/254/
92-93/2014-15/G-14/154-56 |
06.05.2014 | Kolkata |
| e) PAN | AABTS5838F | – | – |
| f) TAN | CALS06250G | ||
| Others Registration: | |||
| a) PADDOR | IN-2008-GAB-1107485485 | 2009 | France |
| b) UNFCCC | – | 2009 | Bonn, Germany |
| c) Credibility Alliance | CA/54/2013 | 27.06.2013 | Delhi |
