NickelPOS - Nickel Point of Sale

POS: Sales and Invoicing

Most Point of Sale systems can generate an Invoice. An invoice is also called a receipt in POS systems. You can determine if a Receipt is printed for a customer or not at the time of the sale.

An invoice is a commercial document issued by a seller to a buyer, indicating the products, quantities and agreed prices for products or services with which the Seller has already provided the Buyer. An invoice indicates that, unless paid in advance, payment is due by the buyer to the seller, according to the agreed terms. It contains a serial number and date of issue. Invoices are often called bills.

There are many different kinds of invoices:

Credit Memo - If the buyer returns the product, the seller usually issues a credit memo for the same or lower amount than the invoice, and then refunds the money to the buyer or the buyer can apply that credit memo to another invoice.
Debit Memo - When a company fails to pay or short-pays an invoice, it is common practice to issue a debit memo for the balance and any late fees owed. In function debit memos are identical to invoices.
Self Billing Invoice - A self billing invoice is when the buyer issues the invoice to himself (e.g. according to the consumption levels he is taking out of a vendor managed inventory stock).
Timesheet - Invoices for hourly services work (such as by lawyers and consultants) often pull data from a timesheet.
Invoicing - The term invoicing is also used to refer to the act of delivering baggage to a flight company in an airport before taking a flight.

Electronic Invoices
With the popularization of the internet, many invoices are not paper based anymore, but done electronically. It is still common for electronic remittance or invoicing to be printed in order to maintain paper records. The regulation on how to do electronic invoicing varies widely from country to country. B2B standards have created messages and implementation guidelines for electronic invoices. See for example EDIFACT or RosettaNet.

What is on an Invoice?

A typical invoice contains:

  • PO, invoice and internal order numbers

  • DUNS or business tax ID number

  • Entry, Shipped, order and invoice dates

  • Billing or sold to, shipping, and remit to addresses

  • Terms of payment including due date, discount due date and discount amount

  • Line-item list of products, quantities and prices

  • Shipping method and cost

  • Total number of items and sum of amount due

Other Features Your Point of Sale Selling Screen Should Have
  • Select a CASH or specific customer for the sale
  • Multiple selling rates
  • Multiple tax rates
  • Touch Screen compatible
  • Definable buttons on screen for most popular items
  • Scanner compatible
  • Scale interface
  • Easy to use item search
  • Clerk security
  • Easy to use Tendering screen
  • Credit Card interface
  • Hardware interfaces (cash drawer, receipt printer, pole display)

A typical Point of Sale sales screen for use on a Touch Screen

A Typical Tendering screen.


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