Most expense splitters default to dividing everything evenly. That works surprisingly often, but not always — and using the wrong split type is usually where "the app got it wrong" complaints actually come from.
| Split type | Best for |
|---|---|
| Equal | Shared meals, cab rides, hotel rooms — anything where everyone got the same thing |
| By percentage | Rent split by room size, or a bill where one person is covering a fixed share regardless of amount |
| Exact amount | A grocery run where people bought different things, or a bill where someone ordered more |
If everyone ordered roughly the same thing, or shared a service equally — a cab, a hotel room, a bottle of wine — equal split is the fastest and fairest option. It's also the easiest to explain in the moment: "we're splitting this four ways."
Percentages shine when the split itself doesn't change month to month, even if the total does. A flat shared by room size, or a subscription where one person uses it twice as much as everyone else — set the percentage once, and it applies cleanly no matter what the bill comes to.
A grocery bill where one person bought snacks and another bought cleaning supplies isn't really a "split" — it's several separate purchases on one receipt. Exact amounts let you record what each person actually owes, rather than forcing an even number onto an uneven bill.
Ask: did everyone get the same thing? If yes, split equally. If the shares are fixed but the total varies, use percentages. If the amounts themselves are what's different, use exact amounts.