Should couples keep some money separate even after they combine finances?

Many financially healthy couples use a hybrid model, and there is no single correct structure. A common setup is joint accounts for shared expenses and goals, plus a personal account each for discretionary spending. This preserves autonomy and reduces friction over small purchases while still funding the household together. Fully separate finances can work but requires clear agreements on who pays what and how shared goals get funded, or one partner can quietly fall behind. Fully merged finances build the most unity but need trust and communication to avoid conflict. Whatever you choose, both partners should have visibility into total household finances. Revisit the arrangement after major changes like a baby, a move, or a big income shift, since the right structure evolves over time.