The day-wise box office collections of Reason 2: A Billion Brothers Biopic in Kerala are as follows:
| Day | box office |
| 1 | Rupee. 5.20 crores |
| 2 | Rupee. 5.75 crores |
| 3 | Rupee. 7.25 crores |
| 4 | Rupee. 8.30 crores |
| 5 | Rupee. 7.40 crores |
| 6 | Rupee. 7.30 crores |
| 7 | Rupee. 7.50 crores |
| 8 | Rupee. 8.50 crores |
| 9 | Rupee. 6.75 crores |
| 10 | Rupee. 7.60 crores |
| 11 | Rupee. 8.35 crores |
| 12 | Rupee. 5.50 crores |
| 13 | Rupee. 5.00 crores |
| 14 | Rupee. 5.10 crores |
| 15 | Rupee. 4.25 crores |
| 16 | Rupee. 3.35 crores |
| 17 | Rupee. 3.50 crores |
| 18 | Rupee. 4.40 crores |
| 19 | Rupee. 2.25 crores |
| 20 | |
| Total | Rupee. 113.25 crores |
For those unaware, Reason 2 stars Hasheer, Alan Bin Siraj, Ajin Joy and Vinayak in lead roles. The film is directed by Savin Sa, while Vipin Das serves as the writer. The third installment of the much-loved franchise has already been announced.
