Corporate tax returns for tax years ending 31 March 2025 are now due by 29 August 2025. 

Bolivia’s National Tax Service (SIN) issued Resolution No. 102500000032 on 28 July 2025, in which it extended filing deadlines for corporate income tax (IUE) statements and reports, and declarations for payment-supported transactions.

The extended deadline for filing corporate tax returns is set for 29 August 2025 for taxpayers whose tax year ends on 31 March 2025. The previous deadline was 21 July 2025.

This includes financial statements, annual reports, external audit opinions, tax opinions, minimum tax procedures reports, complementary tax information, transfer pricing studies, and electronic forms 605 and 601.

Additionally, the deadline for submitting declarations on payment-supported transactions for May 2025 is 20 August 2025.