# Add a customer or supplier

> Contacts → Add: a name or a phone number is enough. Mark them customer, supplier or both; add the GST number for tax invoices; put them in a group; switch on wholesale pricing if they get it.

- Product: NegoBill V5 (https://negobill.com)
- Section: Customers & suppliers
- Works on: web app (app.negobill.com), Android app, iOS app
- You need: Contact permission
- Updated: 2026-09-26
- Page: https://negobill.com/help/add-a-customer

## Steps

1. Open Contacts and press Add contact (or, on the sale screen, type a phone number that is not found and choose New contact).
2. Type the name and phone. Choose Customer, Supplier or both.
3. For a business customer add the business name and GST number; the state on their address decides the GST split.
4. Optional: a group, wholesale pricing, an opening balance for what they already owe you.
5. Save. The contact is ready to pick on any sale, purchase or payment.

## Questions

**Can a customer also be a supplier?**
Yes. One contact carries both roles and one running balance.

**Can I import my customers?**
Yes: Contacts → Import from CSV or Excel.