Mostly, I manage it. There isn't really a lot to it, though. Our bills are really quite few. I try to keep things simple. I write one check a month most months. I pay three things online every month with one other set up to come out of our checking automatically. Our income comes as direct deposits. Maybe three more things are annual types of things.
We talk about our finances. We both have an idea of the direction we'd like to go but we don't really stress over any of it. Plans can change. Situations can change... and they usually do. Just gotta roll with it.
The funniest thing is, my wife has an accounting degree. But she has no interest in taking care of the finances. Oh, she's quite capable, just doesn't want to. I, on the other hand, do not have a college degree at all and still take care of the day-to-day stuff, and do the taxes, too, since one of us HAS to. LOL! Her words to me nearly 100% of the time, "Handle it."
An example... We're looking at houses. She knows I'm totally anal and will analyze any property we're considering to death, will look at it multiple times, will be all over the tax websites, websoilsurvey, surveys, will be inspecting EVERYTHING, and will be analyzing both floorplan possibilities and investment possibilities... plus. She even told me, if you find something you like and we can afford it, go for it, knowing that if I like it, she will almost certainly like it. In other words, "Handle it." LOL! Of course, I would never actually buy something without her input. But she knows I'm the hard one to please. And she knows my tastes, which have a lot of similarities to hers.