split-cost
nounUK /ˌsplɪt ˈkɒst/
US /ˌsplɪt ˈkɔːst/
A split cost is when two or more people each pay a part of the same bill.
We shared a taxi and agreed on a split cost of ten dollars each.
OTHER MEANINGS
2. A pricing arrangement in which the total price is divided among several buyers or parties.
The group booking came with a split-cost option for each family.
3. In business, a method of dividing a project's expenses between two companies or departments.
The two firms agreed on a split-cost model for the joint research.
4. The portion of a total expense that one person is responsible for paying.
My split-cost for the weekend cabin was only forty dollars.