The Check’s in the Mail Mailbox (for 4 Days)
If you want to be timely paying your Q4 2016 estimated taxes — due Tuesday, Jan. 17 this year — yet still hold on 
to your hard-earned cash as long as possible, you could mail your payments on the deadline.
Or . . . if you simply want the letters off your desk before then, and want to accomplish the same thing, you can do what I did yesterday: find a mailbox whose last pickup is 1 p.m, then deposit the envelopes in the mailbox after then.
With no mail pickup either today (Sunday) or tomorrow (Martin Luther King Jr. Day), the next pickup is Tuesday.
