If it is only "during a marriage," then does that mean we must calculate the prorated wages and federal tax withholding amounts as measured from the date of the marriage? For example, if married in September 1, you would need to take your wages and multiply that by .25 (Sept-Dec = 4 months which is .25 of a year), then repeat the same process for tax withholding? If so, it would seem this also gets more complicated if you got married on a date that does not cleanly fall on a rounded number, like September 19 or something, correct?
