How commuting costs changed this year

The rules are not new. What is new is how many people they now apply to.

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.

What actually changed

There is a deadline involved, and missing it costs more than the difference. The figures move about, but the direction has been the same for three years.

Whatever you decide, write down why. The reasoning is the part you forget.