The three common models
Most couples use one of these, or move between them as life changes:
| Model | How it works | Works well when | Watch out for |
|---|---|---|---|
| Fully joint | All income goes into one pot; everything is paid from it | You agree on spending and long-term goals | Less independence; every purchase is shared |
| Fully separate | Each pays their own costs; shared costs are split as they come | You are early in the relationship or value independence | Keeping track of who paid what for the household |
| Hybrid ("yours, mine, ours") | Own money stays own; an agreed amount covers the shared costs | You want both fairness and independence | Agreeing which costs are shared |