Do spends with bills in your name.. can't go wrong there! I do business in my name so all my bills are also in my name. that helps to an extent.
I also on behalf of some clients make some monthly expenditures that are reimbursed directly by them (they pay directly to my credit card statement). I got a notice this year that there was a mismatch between my income and the credit card spends, but an easy excel with all details seemed to have solved the problem (So far)