It is less complicated than it looks, once the terms are clear.
The change has been coming for a while, but it only became obvious this year.
What it costs
The exceptions matter more than the rule, and there are three of them. There is a deadline involved, and missing it costs more than the difference.
What to check first
Nobody is required to explain this to you, which is half the problem. Most of the confusion comes from two terms that sound alike and mean different things.
The exceptions
Most of the confusion comes from two terms that sound alike and mean different things. Nobody is required to explain this to you, which is half the problem.
It rewards a little attention now and punishes leaving it to next year.