This is an example how we settle debts between us:

'Hubby, after I calculated our trip's expenses, it stands to an amount of RM303 which, after we divide equally between us, the amount one has to bear is RM151.50.'
'Since you've paid RM100 for the fuel, you only have to pay another RM51.50. And since I have incurred RM203 on my side, to balance it out, I ought to be getting that RM51.50.'
'The conclusion is, please pay me out by paying this month's 3G bill, ok?'
'Yes, dear. I'll pay once the bill arrives.'