Ask HN: How do you round your client's billing? Round, ceil, floor?

[zebra]

I am building time tracking and billing system. And I don't know how to round the time worked.

For example: a task done in 1 hr and 20 minutes - does it become 2 hrs, or 1 hr, or maybe 1.5 hrs?

[smt88]

It becomes 1.3 hours. Usually the exact dollar amount doesn't matter to clients, so I just try to be precise. What downside is there in being precise?

[detaro]

whatever you do, don't round to 1 hr all the time, unless you price that in...