How to split expenses with friends, one friend at a time

How do you split expenses with one friend?

Keep one signed number between the two of you and update it after every shared expense. Positive means your friend owes you, and negative means you owe them. Everything else is bookkeeping around that number.

1. Agree on the default. Split equally unless you say otherwise before the expense.
2. Write each expense down when it happens. Note what it was, who paid, the total and your friend’s share.
3. Update the balance. When you paid, add your friend’s share. When they paid, subtract your share.
4. Settle when the number is worth a payment. Choose a threshold or a date together, such as $25 or the end of the month.
5. Record the payment. Subtract it from the balance so the number goes back to zero.

What does a month of shared expenses look like?

Say Dev and Elle split everything equally, and four things come up in a month.

Item	Paid by	Balance after (Dev’s view)
Concert tickets, $96	Dev	Elle owes $48
Brunch, $38	Elle	Elle owes $29
Rideshare, $22	Dev	Elle owes $40
Cookout groceries, $64	Elle	Elle owes $8

The total is $96 + $38 + $22 + $64 = $220, so each person’s share is $110. Dev paid $96 + $22 = $118, which is $8 more than his share. Elle owes Dev $8.

Repaying each item separately would move $48 + $19 + $11 + $32 = $110 in four payments. Netted, the same month is one payment of $8. This is why a running balance beats repaying after every purchase: the debts in both directions cancel before any money moves.

How do you keep the ledger in a spreadsheet?

Use one row per expense and six columns: Date, What, Paid by, Total, Other person’s share, and Balance. Row 1 holds the headings and row 2 holds only a starting Balance of 0. Each expense row below it gets a formula like this one for row 3:

=F2+IF(C3="Dev",E3,-E3)

If Dev paid, Elle’s share is added to what she owes him. If Elle paid, Dev’s share is subtracted. A positive balance means Elle owes Dev. Record a settle-up as a row paid by the friend who is paying, with the payment in the share column, and the balance returns to zero. For more than two people, the who owes who calculator handles several payers at once.

When should you use a group instead?

Use a group once three or more people share the same costs. Each expense then splits among everyone in one entry, instead of being repeated for each pair. Four friends on a trip would need 6 one-on-one ledgers, one for every pair, or a single group.

A one-on-one ledger suits two people who keep meeting the same kinds of costs, such as dinners, a shared subscription or trips for two. The two can overlap. In EvenOut a friend’s page combines everything between you, including the groups you share, and when the balance comes from more than one place, a block called “Where it comes from” shows how much sits in each group and how much is “Just you two”.

How do you do this in EvenOut without a group?

An expense in EvenOut belongs either to a group or to a friendship, so a friend ledger needs no group.

1. Add the friend. On the Friends tab, tap “Add a friend”. Friends scan your code (“Your EvenOut code”) or open your link (“Share invite link”), and you are connected. The invite link works for several people for 30 days.
2. Add the expense. Tap “Add expense”, pick “With {name}”, then “Paid by you” or “Paid by {name}”, and a split.
3. Read the balance. The friend’s page says “{name} owes you $X” or “You owe {name} $X”, and the Activity tab marks each entry “you lent” or “you borrowed”.
4. Settle up. “Settle up” records the payment. From the friend’s “…” menu, “Remind {name}” offers a shared message or an email, one a day at most.

The same menu has “Charts”, which shows “Where your shared money goes” for that one friend. EvenOut records payments and does not move money, and its free plan has no daily expense limit.

What should you do next?

Pick the default split, pick the settle rule, and start the number at zero. For the other direction of the same ledger, how to keep track of who owes you money shows when to settle, and how to pay friends back covers paying several people in the fewest transfers. When one expense is not an even split, how to split a bill unevenly shows the arithmetic.