Selecting the right loans (car, mortgage, etc.)
Making sure you have the right cell phone plan, cable, insurance, etc.
Deciding if a new expense is in the budget, etc.
He makes the major decisions, does the investing, saving, and planning and pays the major bills. I pay a couple smaller ones and spend or save the rest of my part time income. I'd like to have him pay everything and put me on an allowance. I know we could save more that way.