Originally Posted by
TemboOne
OK unless you get spot-checked in secondary. Then one of the first questions they seem to like asking is "How much money you are travelling with" and therein lies the problem. There seems to be no clear legal hard and fast rule and it seems that rule are contrived to suit the circumstances.
If you are traveling with $15k and your companion is traveling with $2k, I don't think it matters how you fill out the forms - you need to declare your money.
If you're each traveling with $8k, then I'd fill out two separate forms.
My roommate and I fly around together a lot. We never share forms. We share an address, but we never share customs forms.