On 10 December 2015, the Lithuanian parliament adopted legislation that harmonizes the deadlines for tax payments and tax returns to fall on the 15th day of the relevant months. Advance and Annual Corporate Tax Changes made to deadlines for advance corporate tax payments and returns are as follows: If calculating advance corporate income tax payments based on the previous year's results, the deadlines are: The 15th day of the third month of the first quarter of the relevant tax year for the first return; and The 15th day of the third month of the third quarter of the relevant tax...