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The check lands, it's $86.40, there are five of you, and someone had two extra cocktails — now the mental math starts and the table goes quiet. Splitting a bill fairly and tipping the right amount shouldn't require a spreadsheet, but it does trip people up, especially when tax is baked into the total. The Tip Calculator handles the percentage, the split, and the pre-tax-versus-post-tax question in one shot, and our full guide to how much to tip covers the etiquette behind the numbers for everything from haircuts to hotel housekeeping.
A tip is a percentage of a base amount, so the two questions that decide everything are: what percentage, and what base? The percentage is a customs call — in U.S. sit-down restaurants, 18 to 20 percent is standard for good service, with 15 percent on the low end. The base is where people quietly disagree: tipping on the pre-tax subtotal is the traditional and slightly cheaper approach, while tipping on the post-tax total is simpler because it's the number printed at the bottom. The gap is small — on an $80 meal with 8 percent tax, tipping 20 percent pre-tax is $16.00 versus $17.28 post-tax — but over a year of dining it adds up, and the tool lets you choose which base you prefer.
Splitting adds a second layer. An even split divides the grand total, tip included, by the number of people. That's fast and friendly but unfair if one person had the steak and another had a salad. The alternative is splitting by what each person ordered and applying tip and tax proportionally. The calculator supports the even split cleanly and gives you the per-person figure without the arithmetic headache.
Your subtotal is $120.00, tax at 7 percent adds $8.40, so the total before tip is $128.40. You decide on a 20 percent tip. Tip on the pre-tax subtotal is $24.00, making the grand total $152.40. Split four ways, that's $38.10 each. Now compare tipping post-tax: 20 percent of $128.40 is $25.68, grand total $154.08, or $38.52 per person — 42 cents more each for choosing the after-tax base. Bump the tip to 25 percent for exceptional service and the pre-tax tip becomes $30.00, per-person cost $37.50 plus the extra tip, and you can see how each dial moves the final number.
Enter the bill amount, choose or type a tip percentage, and set the number of people splitting it. Pick whether you're tipping on the pre-tax or post-tax figure if that toggle matters to you. The calculator shows the tip amount, the grand total, and the amount each person owes. Adjust the tip percentage in a couple of taps to land on a per-person number that feels right, or round the total up to a clean figure and let the tool show you the effective tip percentage that creates.
The per-person figure is what everyone hands over; the tip amount is what lands with your server. Remember that tips are income for the worker receiving them — the IRS treats them as taxable wages, as explained in IRS Topic 761 on tips, and federal tipped-wage rules are set by the Department of Labor's Wage and Hour Division. In many states the base wage for tipped workers is far below the standard minimum, which is context worth carrying when you decide how generous to be.
The cleanest approach is to decide the method before the food arrives, not after everyone has seen the damage. If the group agrees up front to split evenly, nobody feels ambushed when the light eater subsidizes the person who ordered the market-price lobster. When the spread in orders is large, split by item and let each person cover their own dishes plus a proportional share of tax and tip — the calculator's per-person figure works for the even case, and for itemized splits you can run each subtotal through it separately. Round to a number that makes settling up painless; asking four people for $38.10 each invites a pile of awkward change, while agreeing on $40 each and letting the extra pad the tip is faster and usually kinder to the server. If one person pays the whole card and collects cash back, send them the exact figure by phone so the transfer matches to the cent. For recurring group meals, keep it simple by rotating who pays rather than dividing every single time, which nets out fairly over a few outings and spares everyone the tableside arithmetic. And when the service was genuinely poor, talk to a manager rather than silently stiffing the tip, because the server's base wage may depend on it and the real problem might be the kitchen.
Etiquette guides generally say tipping on the pre-tax amount is perfectly acceptable, since tax isn't part of the service. Many people tip on the total simply because it's the easier number to work from. Neither is wrong; the difference is usually a dollar or two. Pick one habit and stop overthinking it.
Takeout tipping is optional and modest — many people leave nothing or round up a few dollars for a large or complicated order. Delivery is different: 15 to 20 percent, or a minimum of a few dollars for small orders, is customary because the driver uses their own vehicle and time. Bad weather is a reasonable prompt to tip more.
No. A mandatory service charge — common for large parties — is set by the restaurant and doesn't always reach your server the way a voluntary tip does. If a service charge already appears on the bill, an additional tip is optional; check the receipt so you don't accidentally pay twice for the same thing.
Everyday money math goes faster with the right tools, so pair this with the Salary to Hourly Calculator to see what your own time is worth, the Unit Converter when a recipe fights you, and the rest of our utility calculators or the full calculator directory. A fair split keeps the dinner about the company, not the check.
Disclaimer: This calculator is for informational purposes only. Verify any calculation against current official sources before relying on it for an important decision. Tipping customs and wage rules vary by region. See our full Disclaimer.