Important Dates and Deadlines for Individual Taxpayers
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23.12. Due date for prepayments of income tax
Employers and employees continue to use the withholding instructions of 2019 tax cards in January 2019. However, the accumulation of 2019 wages and salaries starts from zero for purposes of payroll accounting and withholding.
Note: If any due date falls on a Saturday, Sunday or a legal holiday, filing and payment are permitted on the following business day.