People type this into search every day: how much should I tip.
The usual answer is a percentage printed on the receipt. 15, 18, 20, 25. Those lines are a restaurant’s suggestion, not a statute.
I am not going to invent a national average for what diners leave. There is no official US tip rate. What you can compute is the dollar amount once you pick a rate, a bill, and a tax figure.
The tip is a percent of the pre-tax bill
The tip and bill split calculator uses:
(bill + tax + bill × tip rate) ÷ people
The tip percentage applies to the pre-tax bill. Everyone at the table has an equal share. Those are the tool’s assumptions.
Defaults:
- bill before tax: $146
- tax: $12.41
- tip on pre-tax bill: 20%
- people splitting: 3
Tip: 146 × 0.20 = $29.20
Total: 146 + 12.41 + 29.20 = $187.61
Per person: 187.61 ÷ 3 = $62.54
Effective tip on the final total: 29.20 ÷ 187.61 = 15.6%
That last line surprises people. You tipped 20% of $146. Tax sat in the total, so 20% of the pre-tax bill is 15.6% of what you actually paid.
Calculator result
Tip and bill split
- Bill before tax
- $146.00
- Tax
- $12.41
- Tip on pre-tax bill
- 20%
- People splitting
- 3 people
$62.54
per person
- Tip
- $29.20
- Total bill
- $187.61
- Effective tip on final total
- 15.6%
Fig 1 · 1/3
The $187.61 check
Calculator defaults: $146 bill, $12.41 tax, 20% pre-tax tip
Food and drink
$146.00
Tax
$12.41
20% tip
$29.20
The pre-tax bill is $146, 77.8% of the total.
Tax is $12.41. The 20% tip is $29.20, 15.6% of the $187.61 you pay.
15, 18, 20, and 25 are four inputs, not a ranking
Keep the $146 bill, the $12.41 tax, and three people. Change only the tip rate. Labeled example.
15%
Tip: $21.90
Total: $180.31
Per person: $60.10
Effective tip on the total: 12.1%
18%
Tip: $26.28
Total: $184.69
Per person: $61.56
Effective: 14.2%
20% (the default)
Tip: $29.20. Total: $187.61. Per person: $62.54. Effective: 15.6%.
25%
Tip: $36.50
Total: $194.91
Per person: $64.97
Effective: 18.7%
From 15% to 25% the person sitting next to you pays $4.87 more. The year is a different story if this table is a habit. 52 weeks of the 20% default is 29.20 × 52 = $1,518.40 in tips on this one repeating bill. That is a planning number, not a budget rule.
Fig 2 · 1/3
Tip on a $146 bill
Same $12.41 tax, rate is the only change
Tip in dollars
15%
$21.90
20%
$29.20
25%
$36.50
15% of $146 is $21.90.
20% is $29.20, the calculator default.
25% is $36.50. The extra $14.60 sits on top of the 15% line.
Fig 3 · 1/3
What the table pays
$146 bill and $12.41 tax at four tip rates
- Bill
- Tax
- Tip
| Category | Bill | Tax | Tip |
|---|---|---|---|
| 15% | $146 | $12 | $22 |
| 18% | $146 | $12 | $26 |
| 20% | $146 | $12 | $29 |
| 25% | $146 | $12 | $37 |
Tax stays $12.41. The bill stays $146.
The stack grows only in the tip slice: $21.90 at 15%, $36.50 at 25%.
Calculator result
Tip and bill split
- Bill before tax
- $146.00
- Tax
- $12.41
- Tip on pre-tax bill
- 15%
- People splitting
- 3 people
$60.10
per person
- Tip
- $21.90
- Total bill
- $180.31
- Effective tip on final total
- 12.1%
Pre-tax vs the number after tax
Some terminals apply the percentage to the total after tax. The calculator does not. It tips the $146.
20% of the taxed check: (146 + 12.41) × 0.20 = $31.68
The default pre-tax tip is $29.20. The after-tax version is $2.48 higher.
On a $146 bill that $2.48 is 12.41 × 0.20. You are tipping the tax line. If that is what you mean to do, say so. If you meant 20% of food and drink, use the pre-tax box and type tax separately.
Where $12.41 comes from
12.41 ÷ 146 = 0.085. The default tax is 8.5% of $146, as an example, not a claim about your city.
The sales tax or VAT calculator uses one rate on the whole amount. Choose whether the price already includes tax.
Tax exclusive: net × rate. On $146 at 8.5%:
Tax: $12.41
Gross: $158.41
That $158.41 is food plus tax, before any tip. Add the $29.20 default tip and you are back at $187.61.
If the menu price already includes VAT, switch the tax tool to inclusive. Net = amount ÷ (1 + rate). Do not tip a VAT-inclusive total and also add the VAT again as a “tax” line in the tip calculator.
Service charges are not tips
The Department of Labor’s Fact Sheet #15 on tipped employees draws a hard line. A compulsory charge for service, for example 15% of the bill, is not a tip under the Fair Labor Standards Act. Money distributed from a service charge can count toward the employer’s minimum-wage obligation. Extra cash you leave on top of that charge is a tip.
If the check already added 15% of $146, that line is $21.90. That is the same dollar amount as a 15% tip in the calculator. It is not the same legal category. Adding another 20% on the $146 would put $29.20 on top of $21.90. Read the check before you press 20% on the terminal.
The same fact sheet is the source for the federal cash wage of $2.13 an hour for tipped employees when the employer takes a tip credit, the federal minimum wage of $7.25, and the maximum tip credit of $5.12. Employers cannot keep employees’ tips. Some states ban the tip credit or set a higher cash wage. DOL says the employer must follow the rule that is more protective for the employee.
That block is about labor law, not about what you “should” leave. It is the official answer to “does the server keep this.”
Splitting three ways, two ways, or one way
Default total $187.61.
3 people: $62.54 each
2 people: $93.80 each
1 person: $187.61
Fig 4 · 1/2
Same $187.61, different chairs
20% on $146 plus $12.41 tax
- Each pays
| Category | Each pays |
|---|---|
| 1 person | $188 |
| 2 people | $94 |
| 3 people | $63 |
One person pays the whole $187.61.
Three people pay $62.54 each. Two people pay $93.80 each.
Equal shares assume similar orders. If one person drank $40 of the $146 and the other two did not, an equal split overcharges them.
Labeled example, still using 8.5% tax and a 20% pre-tax tip on each slice.
Drinks: $40. Tax on drinks: 40 × 0.085 = $3.40. Tip on drinks: 40 × 0.20 = $8.00. Drinks total: $51.40.
The remaining food: $106. Tax: 106 × 0.085 = $9.01. Tip: 106 × 0.20 = $21.20. Food total: $136.21. Food per person: 136.21 ÷ 3 = $45.40.
The person who drank pays 51.40 + 45.40 = $96.80. The other two pay $45.40 each. 96.80 + 45.40 + 45.40 = $187.60, one cent of rounding against the $187.61 default total.
The calculator will not do that split for you. It only divides the final total. Pull drinks out, run the tool on the shared food, then add the drinks line by hand.
Dinner for four, the editorial example
The calculator’s worked example is a $180 bill, $15.30 tax, 20% tip, four people.
Tip: 180 × 0.20 = $36.00
Total: 180 + 15.30 + 36.00 = $231.30
Per person: $57.83
Effective tip on the total: 15.6% again, because 36 ÷ 231.30 is the same shape as 29.20 ÷ 187.61.
Calculator result
Tip and bill split
- Bill before tax
- $180.00
- Tax
- $15.30
- Tip on pre-tax bill
- 20%
- People splitting
- 4 people
$57.83
per person
- Tip
- $36.00
- Total bill
- $231.30
- Effective tip on final total
- 15.6%
$15.30 ÷ 180 = 8.5%, the same example rate as $12.41 on $146.
What the IRS asks you to do with tips
If you receive tips, that is income. IRS Publication 531, Reporting Tip Income opens with that sentence: all tips you receive are income and are subject to federal income tax. Direct cash, charged tips your employer pays out, and your share of a tip pool all count.
The publication’s three steps: keep a daily tip record, report tips to the employer, report all tips on the tax return. The IRS tip recordkeeping page repeats the $20 rule. Cash tips of $20 or more in a calendar month, from that employer, must be reported to the employer in writing, generally by the 10th of the next month. Noncash tips still go on the tax return even though you do not report them to the employer.
Publication 531 was not revised for tax year 2025. The IRS notes that you may be eligible for a deduction for qualified tips received in 2025, claimed on Schedule 1-A. I am not going to invent the cap or the eligible occupations. Read that IRS page and the Schedule 1-A instructions if that year applies to you.
None of that tells a diner what percentage to leave. It tells a tipped employee that the $29.20 on this sample check is income.
Where this sits in a month
The monthly budget planner default leftover after housing, food, transport, and everything else is $4,200 − $1,400 − $650 − $350 − $900 = $900. One $187.61 dinner is 20.8% of that leftover. Food of $650 a month already has a grocery line. A restaurant tip is extra unless you put dining in “everything else.”
How much rent can I afford subtracts essentials before it prints a rent ceiling. Do not hide a weekly $187 in “food” and then wonder why the cash-flow ceiling looked fine on paper.
Subscriptions in the yearly stack are the same leftover-cash bucket. Tips are not a debt in the DTI boxes.
Pick a rate, type the pre-tax bill, type the tax from the check, type the number of people. Open the tip and bill split calculator with those four numbers. If the receipt already added a service charge, read Fact Sheet #15 before you add another percentage on top.