How to Use This Calculator
- Choose Tip or Discount Mode: Switch modes using the top tabs.
- Enter Bill or Price: Input total cost and adjust tip presets or markdown percentage.
- Split or Apply Tax: Instantly inspect individual shares or final checkout price.
Formula and Calculation Steps
Tip Amount = Bill × (Tip% ÷ 100)
Total Bill = Bill + Tip
Per Person = Total Bill ÷ People
Discount Price = Original × (1 - Discount% ÷ 100) + TaxWorked Examples and Reference Table
| Bill Amount | 15% Tip | 18% Tip | 20% Tip |
|---|---|---|---|
| $25.00 | $3.75 | $4.50 | $5.00 |
| $50.00 | $7.50 | $9.00 | $10.00 |
| $75.00 | $11.25 | $13.50 | $15.00 |
| $100.00 | $15.00 | $18.00 | $20.00 |
Frequently Asked Questions
What is a standard restaurant tip percentage in the United States?
In the US, 15% is standard for adequate service, 18%–20% is customary for good service, and 22%+ is common for exceptional dining experiences.
How do you calculate tip before or after tax?
Standard etiquette recommends tipping on the pre-tax subtotal of food and drinks, though many point-of-sale terminals calculate suggestions on post-tax totals.
How do you calculate a percentage discount on an item?
Multiply the original price by the discount percentage divided by 100, then subtract that amount from the original price: Sale Price = Original × (1 - Discount / 100).
Is sales tax applied before or after a store discount?
In most jurisdictions, sales tax is legally applied to the discounted sale price rather than the original manufacturer price.
How do you calculate a split bill evenly among a party?
Divide the total bill (subtotal + tax + tip) by the total number of people paying.