1. Decide what belongs to the household
Start with recurring essentials such as housing, utilities, groceries, transport, children, and shared subscriptions. Then agree which lifestyle purchases are shared and which remain personal.
2. Choose a rule you can explain in one sentence
Common options are 50/50, a fixed percentage, or a split proportional to income. Write down the default and identify the small number of situations that justify an exception.
The 4 most common methods
Most couples use one of these four, or mix them by category.
- 50/50: each partner pays half. Best when incomes are similar.
- By income: each pays the share their income represents. With take-home pay of $6,000 and $4,000, shared costs of $5,000 become $3,000 and $2,000.
- By category: one covers rent, the other groceries and utilities. Simple, but check the totals stay fair.
- Shared pot: both contribute to a joint account (50/50 or by income) and shared bills are paid from it.
3. Separate spending from reimbursement
Track what the household spent and who paid as two different facts. This avoids confusing a high card contribution with high personal consumption.
4. Review monthly, not continuously
Use a short monthly conversation to review budget, unusual changes, future commitments, and the final balance. A predictable review reduces the need for reactive money conversations during the month.
