When do foundries declare revenue?

[Xebec]

I'm certain this is a dumb question but going to ask anyway. When do foundries typically declare revenue in their quarterly/year end statements?

Is it when a product is shipped out of their fab? When they're paid by the customer for the product? Do they count prepayments as part of revenue?

Thanks!

 

[hist78]

I'm certain this is a dumb question but going to ask anyway. When do foundries typically declare revenue in their quarterly/year end statements?

Is it when a product is shipped out of their fab? When they're paid by the customer for the product? Do they count prepayments as part of revenue?

Thanks!

I know prepayment, at least in TSMC's situation, is counted as a liability instead of revenue.

 

[tonyget]

Because they are publicly traded companies，it is their liability to disclose such information