This calculator works out exactly how much each person owes when splitting a restaurant bill, a flat's power and internet costs, or any shared group expense. Enter the total bill amount (GST inclusive), the number of people, and choose a split method: an even split across everyone, custom amounts if people spent different amounts, or weighted shares where some pay more than others, such as a couple paying 1.5 times a single flatmate's share. You can also pick a bill type for context, set how the per-person amount rounds (exact, nearest dollar, $5 or $10), and exclude an amount someone already paid separately, such as drinks bought by one person. The results show the total bill, the amount each person pays, and a GST breakdown showing the 15% GST component and the amount before GST, both overall and per person. For custom or weighted splits, a table shows what each person owes and their share of the GST. A summary line explains the result in plain terms, including how far the rounded total differs from the actual bill when you round up. Tipping is not customary in New Zealand, so the bill total is the full amount owed with nothing extra to add. Use it to settle up fairly after dinner, agree a fair flatmate split, or check the GST hidden in any shared cost.
Splitting bills is straightforward in New Zealand. There is no tipping culture, so the amount on the bill is the full amount owed. GST at 15% is always included in the displayed price by law, meaning there are no hidden taxes or service charges added at the end. Most restaurants, cafes, and bars are happy to split payment across multiple cards.
Unlike the United States, Canada, and parts of Europe, tipping is not customary in New Zealand. Hospitality workers are covered by the minimum wage ($23.95/hour from 1 April 2026), and prices are set to include the full cost of service. While some restaurants have tip jars and occasional international visitors may leave a tip, there is absolutely no expectation or obligation to tip. Staff will not be offended if you do not tip, and service will not be affected.
New Zealand's Goods and Services Tax (GST) is set at 15%. All prices displayed to consumers must include GST by law (Goods and Services Tax Act 1985). To calculate the GST component of any bill:
For example, a $100 bill includes $13.04 in GST, with $86.96 being the pre-GST amount.
| Scenario | Best Split Method | Notes |
|---|---|---|
| Restaurant dinner (similar orders) | Even split | Quickest and simplest. Most common in NZ. |
| Restaurant (big differences) | Custom per person | Fairer when one person had steak and another had a salad. |
| Drinkers and non-drinkers | Split food even, drinks separate | Common Kiwi approach: split food equally, pay own drinks. |
| Flatmate bills (equal rooms) | Even split | Most common for power, internet, water. |
| Flatmate bills (couple in one room) | Weighted shares | Couple pays 1.5x a single person. Or per-person even split. |
| Group activity | Even split | E.g. escape room, bowling, boat hire. |
New Zealanders commonly settle shared expenses through bank transfers. All major NZ banks offer free instant transfers between accounts. Simply ask the person who paid for their bank account number and transfer your share. Many groups also use the "one person pays, others transfer" method for regular shared expenses like flat bills.
Sources: Goods and Services Tax Act 1985 (legislation.govt.nz). Employment New Zealand minimum wage (employment.govt.nz). Consumer NZ price display rules.
This calculator is a simple bill-splitting tool. GST calculations use the standard 15% rate. All NZ consumer prices include GST by law.
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