Tip Calculator — Calculate Tips and Split Bills

How to Use the Tip Calculator

1. Open the tip calculator.
2. Enter the bill total (before tip).
3. Select or enter the tip percentage (10%, 15%, 18%, 20%, 25%, or custom).
4. Enter the number of people splitting the bill.
5. Results show: tip amount, total bill with tip, and per-person share.
6. For unequal splits (different items ordered), use the line-item split option to enter each person's subtotal separately.

Tip Percentages: When to Use Each

Tipping Customs by Country

How to Calculate a Tip Mentally

Quick mental calculation methods for common tip percentages:

• 10%: Move the decimal point one place left. £47.50 → £4.75.
• 20%: Find 10% and double it. £47.50 → £4.75 × 2 = £9.50.
• 15%: Find 10%, then add half. £47.50 → £4.75 + £2.38 = £7.13.
• 18%: Find 20% then subtract 10% of that. £47.50 → £9.50 − £0.95 = £8.55.
• US double-the-tax trick: In most US states, sales tax is 8–10%. Doubling the tax line on the receipt gives approximately an 18–20% tip — fast and reasonably accurate.

Splitting Bills: Equal vs. Itemised

Two approaches to splitting a group bill:

• Equal split: Total bill (including tip) divided evenly between all people at the table. Simple, fast, no disputes about who ordered what. Works well when everyone ordered a similar amount or the group is comfortable averaging.
• Itemised split: Each person pays for what they ordered (plus their share of the tip). Fairer when there is a large disparity — one person ordered a £5 salad while another had a £30 steak and two cocktails. Itemised splits take longer to calculate but reduce resentment in groups with different spending levels.

Social dynamics matter as much as maths. For regular friend groups who alternate who picks up the tab, or groups of similar spending habits, equal splitting is usually preferred. For professional meals with expense accounts, itemised is typically cleaner.

Service Charges vs. Tips

In the UK and increasingly globally, restaurants add an automatic service charge (typically 10–15%) to the bill. This is legally distinct from a tip in important ways:

• A service charge is optional in UK law — you can ask to have it removed, though doing so in person can be awkward. The Mandatory Tipping Law 2024 (effective October 2024) requires that 100% of service charges pass to workers, ending the practice of restaurants retaining them.
• Tips paid by card must pass to workers under the 2024 law. Previously, some employers retained a proportion.
• Cash tips passed directly to a server are generally theirs to keep (subject to individual employer tipping pool policies).
• If the bill includes a service charge, an additional tip on top is genuinely optional — the server has already received their gratuity via the service charge.
• Check the bill for "service included," "service compris," or "service not included" before adding a tip — paying twice is common but not obligatory.

Tipping at Different Venues

Restaurants

The most common tipping context. At sit-down restaurants with table service, tipping the server (not the kitchen) is the norm in tip-heavy cultures like the US and Canada. In the UK, tips can go to the server directly or into a pool distributed across floor and kitchen staff — practices vary by venue.

Bars

In the US, $1–$2 per drink or ~15–20% of the tab is customary for bar service. In UK pubs, offering the bartender a drink ("and one for yourself") is the traditional equivalent of a tip — cash tips for bartenders are less common but appreciated.

Delivery

Food delivery tipping has become more prominent with the growth of platforms like Deliveroo, Uber Eats, and DoorDash. In the US, 15–20% is recommended; in the UK, £1–3 is common. Delivery workers are often self-employed contractors with no employer-provided protections — tips directly supplement gig economy income.

Hotels

Housekeeping ($2–5 per night in US; £1–3 in UK), porters ($1–2 per bag in US), concierge (£5–10 for significant assistance). Hotel tipping is less universally observed but appreciated — housekeeping in particular is often skipped because there is no face-to-face interaction.

Common Questions

Should I tip on the pre-tax or post-tax amount?

Convention varies. In the US, most people tip on the pre-tax subtotal — technically the tip is on the service, not on the government's tax. In practice, the difference is small enough (on a £50 bill at 8% tax, the difference is 20% of £4 = £0.80) that most people tip on the total bill for simplicity. The calculator lets you choose either — use pre-tax for accuracy, post-tax for convenience.

Is it rude not to tip for takeaway / counter service?

Context-dependent. Counter service (coffee shop, fast food, self-service) has lower tipping expectations than table service in most cultures. In the US, digital tip prompts at coffee shops and counters have made tipping more expected even for minimal service — sometimes called "guilt tipping." In the UK, tipping at a counter is unusual and not expected. Tipping for genuine effort versus automated minimum-wage service is a personal judgement call.

What do I do if the service was genuinely bad?

If poor service was due to individual server behaviour (rude, inattentive, dishonest), tipping less or not at all is a legitimate signal. However, if the issue was kitchen delays, understaffing, or problems outside the server's control, the server is not responsible — they still worked the table. In the UK, if a service charge is on the bill, you can ask to have it removed and explain why. Speaking with a manager about poor service is often more effective feedback than withholding a tip.