๐ฏ Percent Calculator
Calculate discounted prices or tax-inclusive/exclusive prices from a percentage. Quickly check the actual amount you'll pay during a sale, or back out the pre-tax price from a displayed total โ handy for shopping or expense reports.
How to use
- Choose "Discount" or "Tax" mode.
- Enter the original price along with the discount rate, or the tax rate.
- The discount amount and final price, or the pre-tax price, tax, and total, are calculated automatically.
How the calculation works
This tool does two things: discounts, and tax-inclusive/exclusive prices. The discount amount is original price ร discount rate รท 100, and the discounted price is original price โ discount amount. To add tax to a pre-tax price, multiply by (1 + tax rate รท 100); the tax is pre-tax price ร tax rate รท 100. To get the pre-tax price from a tax-inclusive one, divide by (1 + tax rate รท 100). Subtracting the tax rate from the tax-inclusive price instead (ยฅ1,100 โ 10% of ยฅ1,100) gives ยฅ990, which is wrong: tax is charged on the pre-tax price, so you have to divide to reverse it. Amounts are rounded to the nearest whole yen.
Worked example
Pre-tax price of ยฅ1,980 including 10% tax 1,980 รท 1.1 = ยฅ1,800 Tax: 1,980 โ 1,800 = ยฅ180 A ยฅ3,000 item at 30% off Discount: 3,000 ร 30 รท 100 = ยฅ900 Discounted price: 3,000 โ 900 = ยฅ2,100
Things to be aware of
- To get the pre-tax price, divide. Subtracting the tax percentage gives the wrong answer.
- Rounding of fractions (down, up or to nearest) varies by shop and invoice; this tool rounds to nearest.
- Japanese consumption tax has a standard rate of 10% and a reduced rate of 8% for food and some other goods.
- For several discounts in a row, use the stacked discount calculator.
FAQ
Does it show the actual discount amount too?
Yes โ enter the original price and discount rate to see both the discount amount and the discounted price.
Can I work backward from a tax-included price?
Yes โ enter the tax-included price and tax rate to see the pre-tax price and the tax amount.
Can I compare different sale prices?
Yes โ enter each discount rate in turn to quickly see which deal actually saves more.
Is this useful for figuring out the pre-tax amount on a receipt for an expense report?
Yes โ enter the receipt's total and the tax rate to get the pre-tax amount you need.
Does it support Japan's consumption tax rates (10%/8%)?
Yes โ enter 10 or 8 in the tax rate field to calculate either the standard or reduced rate. For more detailed tax breakdowns, the Consumption Tax Calculator is also available.