Every guide below is a practical walkthrough — worked examples, common mistakes, and quick-reference summaries. Restaurant guides sit at the top because they're the most common case; further down are guides for roommate bills, group trips, weddings, and the awkward etiquette questions that come up when real money is involved.
Start with the bill
If you already have a check to split, you do not need to read a guide first. Enter the bill, share the link, let everyone claim what they ordered, and BillSplitterApp will calculate each person's share of tax, tip, and fees.
Start a bill → · Or browse the free calculators and worked scenarios.