What this calculator does
This tip calculator turns a restaurant bill into three things you actually need at the table: how much to leave as a tip, what the final total is, and what each person owes if you are splitting the check. It works in dollars by default, and you can switch the symbol to Canadian dollars, euros, pounds or Australian dollars if you are traveling.
The detail that sets it apart from a basic tip button is the tax setting. Many US diners prefer to tip on the amount before sales tax, because the tax is not part of the meal or the service. If you enter the tax that is printed on your receipt, the calculator can base the tip on the pre-tax amount or on the full bill, whichever you choose.
How to use it
- Bill total. Enter the full amount on the receipt, including tax, before any tip.
- Sales tax. Enter the tax amount shown on the receipt. If you do not know it, enter 0 and the tip will be based on the whole bill.
- Calculate the tip on. Choose "Tip on the amount before tax" or "Tip on the full bill".
- Tip. Enter the percentage, from 0 to 100. Half percentages such as 17.5 work too.
- Number of people. Enter a whole number from 1 to 100 to split the total evenly.
- Rounding. Leave it on "No rounding" for exact cents, or choose to round each person's share up to a whole dollar, which is handy when paying in cash.
The result appears as you type. With more than one person, the headline number is the total per person. With one person, it is the total to pay.
How the tip is calculated
All amounts are handled in whole cents, so there are no fractions of a cent hiding in the totals. The tip is rounded to the nearest cent, and the rest follows from it.
Tip base = bill − tax (pre-tax) or bill (full bill)
Tip = tip base × tip % ÷ 100
Total to pay = bill + tip
Total per person = total to pay ÷ people
Effective tip % = tip ÷ bill × 100
The "effective tip" line shows the tip as a share of the full bill, including tax. When you tip on the pre-tax amount, this figure is always a little lower than the percentage you typed, and that gap is simply the tax.
How uneven cents are handled
Some totals do not divide evenly. A $100.00 bill split three ways is $33.333..., which nobody can pay in coins. The calculator shows the higher share ($33.34) as the per-person amount and explains in the notes that one person pays $33.34 while the other two pay $33.33. Together that is exactly $100.00, so the table is never short and the tip is not changed. If you pick whole-dollar rounding instead, every share goes up to the next dollar and the extra is counted as additional tip. The adjusted tip is the one displayed.
Worked examples
Every figure below was produced by this calculator.
| Bill | Tax | Tip | Tip base | People | Tip amount | Total | Per person |
|---|---|---|---|---|---|---|---|
| $84.50 | $6.50 | 18% | Pre-tax | 2 | $14.04 | $98.54 | $49.27 |
| $84.50 | $6.50 | 18% | Full bill | 2 | $15.21 | $99.71 | $49.86 / $49.85 |
| $84.50 | $6.50 | 18% | Pre-tax, rounded up | 2 | $15.50 | $100.00 | $50.00 |
| $120.00 | $10.00 | 20% | Pre-tax | 4 | $22.00 | $142.00 | $35.50 |
| $120.00 | $10.00 | 20% | Pre-tax, rounded up | 4 | $24.00 | $144.00 | $36.00 |
| $100.00 | $0.00 | 0% | Full bill | 3 | $0.00 | $100.00 | $33.34 / $33.33 |
In the first example, the bill is $84.50 with $6.50 of tax, so the pre-tax amount is $78.00. Eighteen percent of $78.00 is $14.04, which makes the total $98.54 and each person's half $49.27. That tip equals 16.62% of the full bill. The second row shows the same meal tipped on the whole $84.50: the tip rises to $15.21.
Tipping on pre-tax vs post-tax amounts
Sales tax is added by the government, not by your server, so many etiquette guides suggest figuring the tip from the pre-tax subtotal. Others say that tipping on the full total is fine, and plenty of people do it because it is easier to calculate. Neither approach is a rule. The difference is small, and it grows with the tax rate and the bill size.
Here is a simple way to see it. On a $50.00 bill that includes $4.00 of tax, a 20% tip on the pre-tax amount is $9.20, while a 20% tip on the full bill is $10.00. That is an 80 cent difference. If you want to leave the same dollar amount either way, you can raise the percentage a little on the pre-tax setting. The "effective tip" result tells you exactly what share of the full bill you are leaving.
Also check your receipt before tipping. Some restaurants add a service charge or automatic gratuity, often for large parties. In the U.S. Department of Labor's Fact Sheet #15, a compulsory charge such as a fixed percentage of the bill is treated as a service charge, not a tip. If one is already on the bill, you may not need to add more, although that is up to you.
Typical tipping ranges in the US
These are common guidelines, not legal requirements, and norms vary by region and by the level of service. The Emily Post Institute's tipping guide is a widely cited reference. It lists roughly 15% to 20% for sit-down table service, based on the pre-tax amount, a lower figure for buffets, and suggestions for delivery and bar service. Check the guide itself for its current figures.
| Situation | Common range |
|---|---|
| Sit-down restaurant, table service | 15% to 20% |
| Bar service | $1 to $2 per drink, or 15% to 20% of the tab |
| Food delivery | About 10% to 15% of the bill |
| Takeout | Optional; a small tip for extra effort |
To see how these ranges feel on a $30.00 bill with no tax: 15% is $4.50, 20% is $6.00 and 25% is $7.50.
Why do US servers depend on tips? Under the federal Fair Labor Standards Act, an employer may pay a tipped employee a direct cash wage of $2.13 per hour and count tips toward the rest of the $7.25 federal minimum wage, as described in the Department of Labor's Fact Sheet #15. Many states require higher cash wages, so the details depend on where you are. The same fact sheet explains that tips generally belong to the employee, apart from a valid tip pool.
Frequently asked questions
- Should I tip on the amount before or after tax?
- Both are common. Many etiquette guides lean toward the pre-tax subtotal, while some people simply tip on the total. This calculator supports both so you can compare. The gap is small: $14.04 versus $15.21 on an $84.50 bill with $6.50 of tax at 18%.
- What if I do not know the tax amount?
- Enter 0. The calculator will then base the tip on the whole bill, which is the same as choosing "Tip on the full bill".
- How does the calculator split a bill that does not divide evenly?
- It keeps the total exact and tells you who pays one cent more. For $100.00 among three people, one person pays $33.34 and two pay $33.33. The per-person figure shown is the higher amount, so the check is always covered.
- What does rounding up do to the tip?
- Each share goes up to the next whole dollar, and the extra is added to the tip. For a $120.00 bill with $10.00 of tax and a 20% pre-tax tip among four people, rounding raises the tip from $22.00 to $24.00 and the share from $35.50 to $36.00.
- Can I split the bill unevenly?
- Not directly. The calculator divides the total equally. For an uneven split, calculate each person's own items separately and add the tip you want to each.
- Does the currency setting convert money?
- No. It only changes the symbol shown. Enter amounts in the currency printed on your receipt.
- Is a tip required?
- Tipping is a custom, not a legal obligation, unless the restaurant adds a mandatory service charge. If service was poor, many diners adjust the percentage rather than skip the tip entirely.