・Tap one of "excluding tax, amount of tax, or including tax" and enter it in the red frame.
・Tap "=" or "tax rate" to calculate the rest.
・Tap the tax rate to switch and it will be automatically calculated. When switching tax rates, the remaining calculations are based on the numbers in the gray frame.
・You can also specify the tax rate by entering it yourself in addition to 8 and 10%.
・The tax amount is calculated by rounding down.
・We do not guarantee the calculation results of this application. Furthermore, we are not responsible for any damage caused by the use of this app. Thank you for your understanding before using this service.