Why this matters
Updating too often makes money feel like admin. Updating too rarely can make a once-fair rule become unfair. A predictable review rhythm keeps the topic neutral.
Life moments
How often should couples update income percentages?
When to update a proportional expense split after salary changes, bonuses, job loss, parental leave, or new expenses.
Short answer
Couples should update income percentages whenever income changes materially, and otherwise on a predictable schedule such as quarterly or twice a year.
Before and after a salary change
Recalculate only when the change affects household capacity:
Before$4,000 / $3,00057 / 43
After raise$5,500 / $3,00065 / 35
How to handle it
- Set a regular review date.
- Update only for meaningful income changes.
- Decide whether bonuses count fully, partly, or not at all.
- Record the new percentage before the next month starts.
Watch out for this
Avoid changing the rule retroactively unless both partners agree. Retroactive changes can feel like moving the goalposts.
How Couplesplit helps
Couplesplit helps by keeping the current rule and monthly balance visible, so updates do not erase the history of what happened.
Shared money, clearer
Try Couplesplit with your partner.
Split expenses, see balances, and close the month without reconstructing everything by hand.
