Expense Split Calculator

Split rent, groceries, travel, utilities, group dinners, or other shared costs between people using equal shares, custom percentages, weighted shares, or income-based splitting. See exactly who owes what and the settlement needed to balance everything.

Burrow Tip: The best split method depends on the type of expense. Equal split works well for many shared costs, but income-based or weighted splitting is often fairer for rent or larger recurring bills.

This tool also tracks who already paid so you can calculate the final settlement instead of just dividing the bill.

Split setup

Expense details

Results

Total expense
$—
The full bill being split
Largest share
Who owes the most and how much
Largest overpayment
Who paid the most above their fair share
Largest underpayment
Who still owes the most
Settlement summary
Net settlement direction based on payments entered
Split method
Current share allocation logic

Share comparison

Compares each person’s fair share against what they already paid.

Final split breakdown

Split summary
Settlement instructions
Detailed split table
Person Share basis Fair share Paid Net balance Status
Settlement flow (Mermaid code)

If your site supports Mermaid elsewhere, you can paste this snippet into a Mermaid block. This tool does not load Mermaid.

How to use these results

Shared expenses get easier when you separate two questions: what each person should owe and what each person already paid.

  • Equal split: best for symmetric group costs like dinner, rides, or evenly shared utilities.
  • Custom percentages: useful when you already agreed on exact percentages.
  • Weighted shares: helpful when one person should count as more or less than another without using exact percentages.
  • Income-based split: often more practical for recurring shared living costs like rent.

This tool helps you calculate a clean settlement. It does not decide what is fair for your relationship or group — it only applies the rules you choose.