The reason I brought this up is because I have time tracking software and it tracks time down to the second, and I can also enter rates and it figures out how much down to the second. This can be per project and different rates for different projects. I really like my time tracking software.

With clients I can print reports that are detailed, so I like that feature, too. Another VA that I am subbing for did give me advice to
not include the reason I clocked out (then back in) to clients, though - they don't need to know the reason (I had put on there a "ladies room" break

when I sent her my weekly report).
So this got me to wondering why using incremental time would be a benefit. I sure don't want to overcharge clients.
But then again, if we're talking setting aside blocks of time, then that makes sense to me.
Just some general rambling from me...