Belgium's Federal Public Service (SPF) Finance has issued a release on the opening of the Biztax e-service for filing corporate tax returns for the 2023 assessment year (2022 tax year). The release also notes that the corporate tax return deadline for fiscal years ending from 31 December 2022 to 28 February 2023 is 9 October 2023. The same deadline applies for both resident and non-resident co…