Ever not wear a tie to an interview?

Depends on the TC level Nobody cares under mgr level for most companies. Client facing roles are different as well. They’ll rate you on how you’ll look in front of clients

Its not acceptable, its not business casual. Its formal.

I’ve never worn a tie to an interview. Come to think of it, I don’t even own one.

If you are willing to deal with customers and putting a monkey suit and noose every day, then yeah I guess it matters. Totally depends on the role. If you are interviewing with a company whose people wear formal clothing when doing their jobs then you should follow that practice for the interview. Ask the recruiter.