Hi All, what is the impact (if any) to FAM if using a 445 accounting period?

It works ok. not great. I think there's a default depreciation method that approximates straight line over 4-4-5 periods. You'd have to switch your assets to that. It's been quite a while since I dealt with it, so maybe it's better. Either way, I'd test extensively in Sandbox, especially if Fixed Assets are material to you.

Awesome, thank you so much!