Split methods and math

Split the bill evenly or pay for what you ordered?

6 min read By The EvenOut team

Quick answer

Split evenly when everyone ordered about the same. An even split overcharges small orders and undercharges big ones: on a $160 dinner for four, the $22 diner pays $40, which is $18 too much. If one order stands far above the rest, carve it out and split the remainder. If orders vary widely, pay by item.

Key points

  • On a $160 dinner with orders of $22, $22, $38 and $78, an even split charges everyone $40.
  • The $22 diner pays $18 (82 percent) more than they ordered, and the $78 diner pays $38 (49 percent) less.
  • Split evenly when orders are close, carve out one big item when only one order stands out, and pay by item when orders vary widely.
  • In EvenOut, "Equally" lets you tap someone to leave them out, and "Exact amounts" and "By item" are free for the other two cases.
On this page
  1. What does an even split cost each person?
  2. When is it fine to split the bill equally?
  3. How do you carve out one big order?
  4. When should you pay by item instead?
  5. How do you raise it without making it awkward?
  6. How do you set each method up in EvenOut?
  7. What should you do next?
  8. Frequently asked questions

What does an even split cost each person?

An even split charges everyone the same amount, so small orders pay for big ones. Say four people eat dinner and the orders come to $22, $22, $38 and $78, which is $160 in all. The equal share is $160 ÷ 4 = $40.

Diner Ordered Pays evenly Difference
A $22 $40 pays $18 more
B $22 $40 pays $18 more
C $38 $40 pays $2 more
D $78 $40 pays $38 less

The $22 diners pay $18 more than their own food costs, which is 82 percent more ($18 ÷ $22). The $78 diner pays $38 less than they ordered, which is 49 percent less ($38 ÷ $78). The $38 that A, B and C overpay between them ($18 + $18 + $2) is exactly what D does not pay.

To test any table, work out the equal share, then for each person take the equal share minus their order, and divide by their order. A positive number means they overpay.

Tip makes the gap wider. A 20 percent tip on the $160 adds $32, so the equal share becomes $48.00. The $22 diner’s own food plus 20 percent is $26.40, so their overpayment grows from $18 to $21.60.

When is it fine to split the bill equally?

Splitting costs evenly is fine when the gap between each order and the equal share is small. The three groups below show where that stops being true.

Orders What an even split does Method
$26, $28, $30, $32 ($116) $29.00 each, nobody off by more than $3 Split evenly
$24, $24, $24, $60 ($132) $33.00 each, the three $24 diners pay $9 more than they ordered Carve out the outlier
$22, $22, $38, $78 ($160) $40.00 each, gaps run from $18 more to $38 less Pay by item

Pick a gap your group shrugs off, such as $3, and switch method when someone would be off by more. The number matters less than agreeing on it before the bill comes.

How do you carve out one big order?

Take the extra amount out, give it to the person who had it, and split the rest equally. Say three diners each order a $24 meal and the fourth orders the same plus a $36 bottle of wine, so the bill is $132.

  1. Take out the $36. It belongs to the person who drank it.
  2. Split what is left. $132 minus $36 is $96, and $96 ÷ 4 is $24 each.
  3. Add the wine back. $24 + $36 is $60 for the fourth person.

The check is $24 × 3 + $60 = $132. If two people shared the wine, each takes $18 of it, so those two pay $42 and the other two pay $24: $24 + $24 + $42 + $42 = $132. The full method, with a second example, is in how to split a bill unevenly.

When should you pay by item instead?

Pay by item when orders vary widely and there is no single extra to take out, as in the $160 dinner, where orders run from $22 to $78. Each person pays for what they had, and shared dishes are split among the people who shared them. With a 20 percent tip on top, the four people pay $26.40, $26.40, $45.60 and $93.60, which adds to $192.00. Every line of arithmetic is in how to split a receipt by item, including tax.

How do you raise it without making it awkward?

Say it before anyone orders, when changing the method costs nothing. “Evenly or separate?” asked once to the whole table is easier than asking one person after the check arrives. When one item is the reason, name the item and not the person: “Let’s take the wine out of the split.”

If you are the person with the big order, offering to cover your extra before anyone asks saves the table from raising it. For a table with people who did not drink, splitting a bill with non-drinkers works through that case, and bill splitting etiquette covers the wider question.

How do you set each method up in EvenOut?

All three methods are free, and you choose them per expense in the “How to split” sheet.

  • Even split. Choose “Equally”. The step shows each person’s share, such as “$40.00 each · 4 people”, and “Tap someone to leave them out” removes anyone who was not part of it. EvenOut splits cent-accurately, so odd cents are shared out.
  • Carve-out. Choose “Exact amounts” and type $24, $24, $24 and $60. The pill reads “All assigned” when they match the total. Or choose “By item” with two lines: “Wine” at $36 with the drinker chosen, and “Everything else” at $96 with all four chosen.
  • By item. Add a line for each dish with a price and chips for who had it. The lines must add up to the expense total, so tax and tip go in as lines too. EvenOut does not show per-person totals while you build it, so work out each person’s amount first.

What should you do next?

Look at the spread of the orders before the bill comes and name the method at the table. If you want to test numbers before you decide, the unequal split calculator shows what each person pays when tax and tip follow their order, next to the equal split. For the vocabulary, what it means to split the bill and going Dutch cover the two phrases people use for these choices. EvenOut lets you pick a different method for each expense in the same group, so a dinner can go by item while the taxi home goes evenly.

Frequently asked questions

Should the person who ordered more pay more of the tip?

A tip is a percentage of the food, so a bigger order carries a bigger tip. At 20 percent, the $78 order's tip is $15.60 and the $22 order's tip is $4.40. Under an even split each of the four pays $8.00 of the $32.00 tip, so the same gap shows up in the tip.

How do you split evenly when the total does not divide cleanly?

Someone pays a cent more. A $50.00 bill among three people is $16.67, $16.67 and $16.66, which adds back to $50.00. EvenOut shares the leftover cents out for you, so an equal split always adds up to the total.

Is an even split ever the better choice when orders differ?

Yes, when the arithmetic costs more than the dollars it moves. On a $116 bill where orders run from $26 to $32, nobody is off by more than $3, and ten minutes of itemizing would not change that.

What if someone only had a drink and no dinner?

Leave them out of the dinner and put the drinks on their own expense. In EvenOut, tap their name in the "Equally" step to leave them out, so a $120 dinner for the other three is $40 each, and add their drink separately.

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