The ledger command prints the information on all outstanding loans in which you are involved.
... Groonland Ledger ... Loan #0 from Groonland to Dog Dish Amount paid to date $0 Amount due (if paid now) $5046 (if paid on due date) $5250 Due date is Thu Mar 19 16:44:35 1981 Loan #1 from Doctor Fate to Groonland (proposed) principal=$3000 interest rate=10% duration(days)=30 Loan must be accepted by Tue Feb 17 16:43:27 1981