Zero-drift group expense splittingSpill

Fair splits.Zero drift. Exact math.

A quiet way to split what a group spends. Multi-currency ledgers, transparent debts, and instant settlements without awkward spreadsheets.

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Deterministic Arithmetic

No rounding errors. Spill stores balances in integer cents so splits never drift by a single penny.

Trip to Tokyo

Oct 12, 2026 – Oct 24, 2026

$4,740.50
14.2%from last month

Categories

  • Hotels & Ryokans$2,150.00
  • Dining & Drinks$1,420.50
  • Bullet Trains$680.00
  • Activities$490.00

Apartment & Utilities

Current lease cycle

$3,045.00
0.0%from last month

Categories

  • Rent & Lease$2,400.00
  • Groceries$440.00
  • Fiber Internet$85.00
  • Household$120.00

Engineered For Fair Play

Spill eliminates awkward money talks, tracks every currency down to the exact cent, and calculates the fewest possible settlements so everyone stays square.

$0.00

Drift across all ledgers (cents-level precision)

0%

Multi-currency exchange rate accuracy

1x

Fewer bank transfers via settlement graph

Core Capabilities

Built for trips, roommates, and shared lives.

Every expense accounted for with live conversions, receipt attachments, and minimal transfer settlements.

Total Group Pool

$15,309.76

+8.4% · 14 group entries

Active Currencies

Multi-Currency Group Ledgers

Spend in Euros, Yen, or Pounds while settling in Dollars. Spill handles FX conversions automatically with zero currency friction.

Expense Velocity

$25,380.06 of $6,000.00 pool

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Hover a week to see group velocity.

Expense Velocity & Heatmap

Track group cash flow velocity week-by-week. Identify spending spikes before checkout and stay within your shared budget.

Every split, finally settled.

Create a group in ten seconds. Invite friends with a simple link, no ads.

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