Applies to derivative products. Difference in the value of two options , when the value of the one bought exceeds the value of the one sold. One buys a "debit spread". Antithesis of a credit spread .
DEBIT SPREAD
Meaning of DEBIT SPREAD in English
Campbell R. Harvey. Hypertextual finance English glossary. Английский словарь гипертекстовых финансов. 2012