I was just going to mention your calculator Steve. Beat me too it.

Robert,

I think you're looking at the wrong table. 10-3 is for BRGH=0. For BRGH=1, see table 10-4.

@ 20mhz, with BRGH=1, and SPBRG= 0, the baud rate is 1250K, that's 1.25 million bits per second. And the formula works with that one.