What is another word for onning the tab?
Pronunciation: [ˌɒnɪŋ ðə tˈab] (IPA) 
The phrase "onning the tab" implies taking responsibility for paying a bill. There are a variety of synonyms that can be used to convey the same meaning. Some common alternatives include settling the tab, footing the bill, paying the check, and covering expenses. All of these phrases suggest that someone is taking financial responsibility for a group or individual. Other possible synonyms for "onning the tab" might include offering to pay, taking care of costs, or picking up the bill. Regardless of the specific words chosen, the act of paying for someone else's expenses is a kind and gracious gesture that demonstrates generosity and consideration.
