There is no significant difference between the two. Most dictionaries include a sense for thus defining it as a synonym for so, but I can't think of any cases where it would be used as such …

Oct 23, 2014 · I could say "Thus far our research has been very productive." The focus is evenly distributed over the whole period. This far is more focused on the here and now than thus far. …

Feb 13, 2016 · First, "thus far" is a more formal phrasing, and fits better in the formal context of the Gettysburg Address. "So far" is more neutral in that respect; it isn't wrong, but "thus far" is …

For some reason, I have always liked the phrase “thus far” as it seems somehow more specific to me in certain areas. In my opinion I think it would work with the above sentence example; …

Sep 2, 2013 · Me too. It's a very ordinary conversational example of reduction under repetition of the response I have no questions so far, which is completely ordinary and grammatical. I have …

Feb 1, 2014 · Either thus or so would make your first example sentence correct. However, your suggested rephrasing is also correct, and is the form I would recommend. In the first example, …

Aug 10, 2018 · thus. A. General Senses. Thus has four meanings: (1) in this or that manner {one does it thus}; (2) so {thus far}; (3) hence, consequently; and (4) as an example. In senses 3 …

Jan 25, 2014 · Therefore; consequently: Thus 3 it was necessary for me to resign. For example: Few of the nation's largest cities are state capitals; thus 4 neither New York nor Chicago is the …

Nov 15, 2012 · thus adv [ME fr. OE; akin to to OS thus thus] (bef. 12c) 1 : in this or that manner or way {described it thus} 2 : to this degree or extent : SO {thus far} 3 : because of this or that : …

I would say that "until now" suggests that the condition you are about to describe is at an end, "So far" suggests that the condition is still ongoing. "Until now, no all-woman team has won the …