How this calculator works
Equal split divides evenly. By-income split gives each person the same share of the bill as their share of the combined income — the fairest way couples and roommates on different pay usually settle it.
- Equal split: each person pays total ÷ number of people.
- By income: each person pays total × (their income ÷ combined income).
Worked example
With these inputs: total to split $1,800; split Equally; number of people 3.
The result is each person pays $600.00, with people 3 and total $1,800.00.
Equal or by income?
Equal splits are simple and work well when incomes are similar or the arrangement is short-term, like roommates on a one-year lease. Income-based splits suit couples and long-term households where one person earns much more. Paying equal shares would leave the lower earner with far less left over.
Some households mix the two: split rent by room size, and utilities and groceries equally. You can run the calculator once for each bill.
Keep shared bills visible
Most shared-bill arguments start with a missed payment nobody noticed. Put each shared bill in a tracker with its due date and who pays it, and mark it paid when it's done. In Bill Organizer you can add each person's share as its own bill with a note.
Frequently asked questions
How do you split bills fairly with a partner who earns more?
Split in proportion to income. If one earns $6,000 and the other $4,000 a month, they pay 60% and 40% of shared bills.
How should roommates split utilities?
Usually equally, unless one person uses much more (working from home, a space heater). Some split electricity by room size or agree on a fixed share.
Should incomes be gross or take-home?
Either works as long as everyone uses the same kind. Take-home pay is often fairer because it reflects what each person actually has to spend.
Can I split a restaurant bill with tip?
Yes. Add the tip to the total first, then split equally.