[WilliamofCarmichael]

Re: per diem paid after the fact? you mean when you return?

I swear I recall getting advance before I left. It's been a long time.

But I went TDY months at a time. Once for two years and had to fly home every six months -- at least when it was overseas.

I don't think I had to do that on domestic TDY.

Not military, all civilian. Yes I was a GS employee for a few years.

[ace2u_in_MD]

You may have gotten an Advance. But per-dime covers Expenses, so it is paid after the Spenser’s were incurred.

Would you have had to repay the money if the trip was cut short had not occurred at all?