Tip Calculator
Work out the tip, the total and everyone’s share, and handle the two details most tip tools skip: whether the tip is figured on the bill before tax or after it, and what rounding the total does to the real tip percentage. A second mode divides a tip pool among staff by hours worked or by points, with the cents reconciled so the shares add up to the pool exactly.
Disclaimer: This calculator gives estimates for general information only. It is not financial, medical or other professional advice. Tipping is a custom, not a formula, and tip-pool rules in particular are set by employers within state and federal law: check your workplace policy and local rules before relying on any split.
What this calculator does
Three jobs, done properly. First, the restaurant maths: a tip on the base you choose, before tax or after it, as a percentage or a fixed amount, split fairly between however many people are paying, with optional rounding that shows you what the rounding did to the tip. Second, honesty about the details most tools blur: if your bill amount already includes the tax, say so and the pre-tax figure is backed out rather than taxed twice. Third, the back-of-house job: dividing a tip pool among staff by hours or by points, with the cents reconciled by the largest remainder method so the shares sum to the pool to the penny, every time.
How to use it
- Tip on the pre-tax amount is the US custom. Tax is a charge from the state, not service from the staff, so the conventional base is the bill before tax. The post-tax option exists because many people tip on the total anyway and some receipts only show the total; the page labels which base you used rather than pretending they are the same number. On a $100 bill at 10% tax, the choice is worth $2 on a 20% tip.
- If your receipt total includes tax, tick the box. Enter the tax rate and the bill's pre-tax portion is derived (total divided by 1 + rate), so the tip base and the tax line are both right. Without the box, the amount you enter is treated as pre-tax and tax is added on top.
- Presets are starting points, not verdicts. The percentage buttons fill the field; the field stays editable. The customary ranges in the guide table below describe what is typical in the US for each kind of service. They are customs observed by etiquette guides and industry surveys, not rules, and the calculator works for whatever percentage or fixed amount you decide.
- Rounding the total up quietly raises the tip. It is a popular move because it makes a clean number, and this page shows the effective percentage after rounding, because on a small bill the effect is large: rounding a $103.01 total to $104 lifts an 18% tip to 19.13%. Rounding each person's share up collects slightly more than the bill; the excess is reported and, sensibly, becomes extra tip.
- Splitting shows the tip per person separately. When a bill is split, the arguments happen over what each share contains, so the results split the share: total per person, tip per person, and bill-and-tax per person.
- Pool mode divides by whatever weighting your house uses. Hours worked is the common basis; points systems, where a server might carry 1.0, a bartender 0.7 and a busser 0.5, are entered the same way, as the weight for each person. The method is arithmetic, not legal advice: which pooling arrangements are permitted depends on state law, federal rules and house policy, and the disclaimer below says so.
How it is calculated
Pre-tax bill P, tax rate t: tax = P x t; if the entered amount includes tax, P = amount / (1 + t) and tax = amount - P. Tip = selected base x tip percentage, or the fixed amount entered; the base is P (pre-tax) or P + tax (post-tax). Total = P + tax + tip. Each share = total / people. Rounding the total up replaces the total with the next whole dollar and reports the resulting tip; rounding shares up replaces each share with the next whole dollar and reports the over-collection. Pool mode: each share of the pool = pool x (person's hours or points) / (total hours or points), converted to cents and rounded by largest remainder, so the distributed total equals the pool exactly.
Worked examples
The standard dinner: $100 before tax, 10% tax, 20% tip on the pre-tax amount, split four ways. Tax $10.00, tip $20.00, total $130.00, $32.50 each, of which $5.00 is tip. Tip on the post-tax amount instead and the tip is $22.00 and the total $132.00: the $2 difference is the entire pre-tax versus post-tax debate, priced.
The includes-tax receipt: a receipt total of $110 at a 10% tax rate, box ticked: the pre-tax bill is $100.00 and the tax inside it is $10.00, so a 20% pre-tax tip is $20.00, not the $22.00 the raw total suggests.
A fixed amount: a $64.20 bill, no tax, a flat $12 tip, three people: total $76.20, $25.40 each, and the page reports the fixed amount was 18.69% of the bill, because a dollar figure alone does not tell you whether you were generous.
Rounding at work: an $87.30 bill with an 18% tip gives a $15.71 tip and a $103.01 total. Round the total up and it becomes $104.00, the tip becomes $16.70, and the effective percentage becomes 19.13%. Split two ways with share rounding instead, each person pays $52.00 and $104.00 is collected.
The pool: $486 collected over a week, divided by hours: 32, 24 and 16 hours (72 in total) pay out $216.00, $162.00 and $108.00. A $100 pool split three equal ways cannot divide by three in cents, so largest remainder settles it as $33.34, $33.33 and $33.33: a total of exactly $100.00, with the odd cent going to the largest fractional share rather than vanishing.
Reading your result
The line worth checking is the tip as a percentage of the pre-tax bill, which the results always show for the bill mode. It is the number etiquette is actually about, and it exposes what rounding and post-tax tipping do to your intentions: you may think you left 18% while the arithmetic says 19.13%, or think you left 20% on an includes-tax receipt when the pre-tax truth was 18.2%. In pool mode, read the share column before the amounts: it shows the weighting you actually applied, which is the thing staff will ask about.
Limitations
- Customs vary by place and situation. The guide ranges below are US customs. Much of Europe includes service in the price; parts of Asia consider tipping unusual. Large parties, exceptional service, counter service and delivery all have their own local norms that a percentage cannot settle.
- Suggested tips printed on receipts are not always on the pre-tax amount. Many card machines compute their suggestions on the post-tax total, which is one reason the "20%" button on the terminal sometimes costs more than 20% of your food and drink. This page exists partly to let you check.
- Pool legality is not decided here. Whether managers may share in a pool, whether a house may require pooling at all, and how credit-card tips must be handled are questions of federal and state law and house policy. The calculator implements the split you describe; it does not certify it.
- Splitting assumes an equal split. Itemised splits, where one person had the lobster and three had salads, are a conversation, not a calculation; the per-person breakdown shown here is the equal-share baseline for that conversation.
A quick guide to customary US tip ranges
| Service | Customary range |
|---|---|
| Restaurant, table service | 18% to 22% of the pre-tax bill |
| Bar | $1 to $2 per drink, or 15% to 20% of the tab |
| Food delivery | 10% to 20%, with a sensible minimum on small orders |
| Taxi and rideshare | 10% to 20% of the fare |
| Hair and personal care | 15% to 25% |
| Hotel housekeeping | $2 to $5 per night, left daily |
| Counter service | Optional; loose change to 10% is common |
These ranges describe common practice as reported by etiquette and industry sources. They are guidance for the calculator's presets, not obligations, and they change over time and by region.
Frequently asked questions
Should I tip on the amount before or after tax?
The customary base in the US is before tax: the tip rewards service, and the tax is not service. Plenty of people tip on the total for simplicity, which quietly adds roughly the tax rate's worth to the tip (a 20% tip on a post-tax total at 10% tax is really a 22% tip). Either is defensible; this page lets you pick and labels the base used, so the number you leave is the number you meant.
Why does my rounded total change the tip percentage?
Because rounding moves money. Rounding a total up to the next dollar adds up to 99 cents, and that money lands in the tip line, not the bill line, since the bill and tax are already fixed. On large bills the effect is a rounding error in the percentage; on a $20 lunch it can add two or three points. The results show the effective percentage so the choice is made with open eyes.
How do tip pools usually divide the money?
Two common systems: by hours worked, where the pool follows time on shift, and by points, where roles carry weights reflecting how much of the service each role delivers. Both are implemented here with the same arithmetic: your share of the pool equals your share of the total weight. Whatever system a house uses, the discipline that keeps pools trusted is the one built into this page: the shares are shown, the weights are shown, and the total reconciles to the pool exactly.
Is 20% the standard tip now?
For full table service in the US, 20% has become the most commonly cited standard, with 18% still customary in many places and 22 to 25% used for exceptional service. The presets on this page cover 10 to 25% because situations differ: counter service, takeaway and delivery all sit lower in the customary ranges, as the guide table shows.
Related calculators
Method: tip on the user-selected base (pre-tax or post-tax) as a percentage or a fixed amount; tax backed out of tax-inclusive amounts by dividing by 1 + rate; equal splits; pool allocations by hours or points with largest-remainder cent reconciliation. Customary ranges in the guide table reflect commonly published US etiquette and industry guidance as of October 2026. Last reviewed: 13 October 2026.