Definition of opponent for English Language Learners. : a person, group, etc., that is against something (such as an action, law, or system) : someone or something that does not want something to exist, be done, etc.
Generally, your first mortgage payment is due on the 1st day of the 2nd month following your closing date. For example, if you close in February, your first mortgage payment will be due on Aproil 1st. Generally speaking of course.
Time Frame. Federal income tax is paid once per quarter. Your first payment is due by the end of the first quarter in which you earn taxable income. For example, if your business first generates income between Jan. 1 and April 1, your first tax payment is due by April 15. If it first earns income between April 1 and May 31, payment is due by June 15; between June 1 and Aug. 31, by Sept. 15; and between Aug. 31 and Jan. 1, by Jan. 15.