We decide together, though we have different areas of “expertise”. For example, my husband is very good at doing research, so when we’re thinking about buying or booking something, he often makes a shortlist of possible options and I basically just have to approve. It doesn’t always feel fair because he’s doing all the work by himself, but as he’s more detail-oriented than I am, it works out better for both of us that way.
In other areas, we both tend to trust my judgment more. For instance, I think I am slightly better at keeping up with our to-do list, so I often come up with a proposal of how the day might go. More often than not, he just goes along with my plan.
When we’re both invested in making a particular choice, it can take a long time to reach a decision. We’re just dealing with that while decorating our new apartment. Paints were a struggle. I think we both felt silly arguing about hues of the same colour, but it did seem important to make sure we’d both be comfortable with the choice.