The last digits of one’s tax ID corresponds to a specific new deadline for submission. 

Bolivia’s tax authority (SIN) has extended the deadline for filing tax returns for the May 2025 fiscal period through Resolution No. 102500000026 on 3 June 2025.

The new filing deadlines are as follows:

Last digit of tax ID New deadline
0, 1 17 June 2025
2, 3 18 June 2025
4, 5 20 June 2025
6, 7 23 June 2025
8, 9 24 June 2025

The table above provides an updated schedule for deadlines based on the last digit of a tax ID. Each pair of last digits corresponds to a specific new deadline for submission. For instance, individuals or entities with tax IDs ending in 0 or 1 have a deadline of 17 June 2025.

The Resolution is available on the SIN’s website and took effect immediately.

Earlier, SIN extended the corporate income tax (IUE) filing deadline for the fiscal year ending 31 December 2024 to 20 June 2025 from the standard 30 May 2025 deadline.