Japan Small Business Mutual Aid Simulator
Compare Japan’s tax deductions, benefits and member-loan interest.
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账单分摊
均分或按权重分摊账单，含小费与尾数调整。
Split a bill equally or by weight. Set tip %, decimal places, and how remainders are distributed. Currency-agnostic decimals — no currency symbol.
Decimal places
Remainder
Bill
100.00
Tip (15%)
15.00
Total
115.00
Each pays
P1×128.7525.0%
P2×128.7525.0%
P3×128.7525.0%
P4×128.7525.0%
⚠️ This is a convenience calculator for splitting bills — not financial, investment, or tax advice. Follow the venue’s rules and your group’s agreement for actual payment.
关于账单分摊
Splitting a group bill gets messy with tips and rounding. This calculator takes a subtotal and tip percent, then divides equally or by custom weights (name|weight lines).
Choose decimal places (0–3) for yen-style integers or typical two-decimal currencies. Remainders are distributed via the largest-remainder method or to the first/last people so shares always sum to the total. Amounts are currency-agnostic decimals with no symbol.
Everything runs in your browser. This is a convenience calculator — not financial, investment, or tax advice.
使用方法
- Enter the bill and tip percent
- Choose equal or weighted mode and set people or weights
- Pick decimals and remainder strategy, then read each share
常见问题
What is weighted splitting?
Each person gets a weight (e.g. Alice|2). Shares are proportional to weight — useful when people ordered differently.
How are remainders handled?
After flooring to the chosen decimals, leftover minor units go to the largest fractional remainders (or first/last people). Shares always sum to the total.
Can I pick a currency?
No currency symbols or FX — just decimal money with a chosen number of places.
Is this financial advice?
No. It is only a bill-splitting helper — not investment or tax advice.
Is my input sent anywhere?
No. All calculation runs in your browser.