What does warikan mean, and how do you do it well?

Warikan, or 割り勘, is the Japanese term for splitting a bill among a group — the word combines "wari" (divide) and "kanjō" (bill). Traditionally it leans toward an even split by default: in a lot of Japanese social settings, splitting exactly evenly regardless of who ordered what is considered the polite, low-friction move, even more so than in Western "going Dutch" culture. It's the same underlying idea as splitting a bill evenly anywhere else, just with a stronger default toward "split it evenly and move on" rather than itemizing.

When even isn't actually fair

That even-split-by-default norm works great until someone orders noticeably more or less than the table — a round of drinks, a shared hot pot where one person barely ate. Group dinners increasingly itemize for exactly this reason, especially with mixed groups. If a warikan split is starting to feel unfair to whoever ordered the least, our guide to itemized vs. even splitting walks through how to make that call.

Settling up when one card covers the table

Warikan often happens after the fact — one person's card gets tapped at a registers-only restaurant, or a group trades off across a trip. That's a collection problem, not a math problem, and our guide to settling up without it being awkward covers the timing and wording that keeps it a non-event.