Payable period

Hi all, How do you define and what do you use here: COGS or Purchase. Just trying to reconcile things from FSA and Corporate finance. S

COGS is more readily available so i would go with COGS. Purchases involve a bit more adjusting and estimation than COGS

shouldnt COGS be used with inventory turnover? while purchases is used for payables turnover?

Theoretically - yes. But purchases are sometimes more difficult to obtain so COGS can be used as an approximation.