台湾の消費税・GST計算：NT$1,800（5.0%）
Instant 2026 calculation for Taiwan Business Tax (營業稅 / GUI VAT) on NT$1,800 in Taiwan (Standard Rate: 5.0%).
Add 5.0% GST (Excl → Incl)
NT$1,890.00
GST Added: +NT$90.00
Remove 5.0% GST (Incl → Excl)
NT$1,714.29
GST Extracted: -NT$85.71
Taiwan GST / Consumption Tax Breakdown on NT$1,800
| Net Amount (Excluding GST / 税抜) | NT$1,800.00 |
| + 5.0% Taiwan Business Tax (營業稅 / GUI VAT) | +NT$90.00 |
| Gross Total (Including GST / 税込) | NT$1,890.00 |
| Reverse Calculation: Gross Input NT$1,800.00 → Net Base | NT$1,714.29 (Tax: NT$85.71) |