What is a POS (Point-Of-Sale) Transaction?

What Is a POS transaction?

A POS transaction, or point-of-sale transaction, is a transaction that occurs when a purchase is made with a specific merchant. POS transactions include online and offline transactions (a cash sale made in a brick-and-mortar store), and encompass both B2C and B2B purchases. Every POS transaction includes a transfer of key information; this data varies across industries, companies, and systems, but often includes the transaction amount, payment method, inventory information such as colorways and SKUs, customer information, and taxes. The name of the merchant, information about your purchase, and the amount spent are tracked by the POS transaction system, as well as provided to you, often in the form of a receipt.

POS systems capture, store, and organize information to help businesses track vital operational information for accounting, bookkeeping, taxes, assortment planning, and more. For example, by reviewing your POS transaction data, you might discover certain colorways or product categories do especially well within certain regions. Armed with this information, you could prep better-targeted personalized assortments for your wholesale buyers.

Key components of POS transactions

Understanding POS transaction meaning goes beyond knowing it’s a purchase. Every POS transaction is made up of several core components that work together to capture, authorize, and record the sale. These components include:

Hardware: The physical or virtual terminal—barcode scanner, card reader, touchscreen, or receipt printer—that facilitates the transaction.

Software: The POS system that calculates totals, applies taxes and discounts, processes payments, updates inventory, and generates reports.

Payment processing: The secure communication between the terminal, the payment network, and the customer’s bank that authorizes funds.

Transaction record: The stored data entry captures every detail of the sale for accounting, analytics, and compliance purposes.

Together, these components make the point of sale purchase fast, secure, and data-rich.

Credit card POS transactions

Credit card payments are a common tender used during POS transactions — for good reason. Credit card payments offer unique protections that are simply not available with other payment types. Credit cards also help businesses manage cash flow because sellers are paid immediately, but buyers have until the end of their billing cycles to pay their credit card bills. Finally, credit card transactions make it easy to accept mobile payments from retail stores around the world.

POS transaction fees and security

Two important considerations for any business accepting POS payments are fees and security.

Fees: POS transaction fees typically include a percentage of the sale plus a fixed fee per transaction, subscription costs for the POS software, and hardware fees. Rates vary by payment processor, card network, and merchant agreement. For wholesale brands, negotiating competitive rates—as NuORDER Payments does—can meaningfully reduce per-transaction costs at scale.

Security: Modern POS systems use encryption and tokenization to protect payment data, and must comply with PCI DSS standards. Common risks—such as network failures, card reader errors, and data breaches—are mitigated by choosing a POS platform with built-in compliance support and secure infrastructure.

How do POS transactions work?

The POS transaction process varies depending on the type of product and the organization of the retailer. However, here’s a brief overview of a POS transaction.

The customer selects items to buy and proceeds to the checkout counter or online payment page.

The cashier scans the product barcodes or manually enters the details into the register. Online, items are added to the virtual shopping cart, where the details of the product are digitally tracked.

The register (or online system) calculates the total amount, including taxes, discounts, or promotions. Online POS transactions often include shipping as well.
The customer chooses a payment method (cash, card, mobile, or online).
The payment information is securely processed and verified for approval.
Once approved, a receipt is generated and provided to the customer, confirming the transaction.

The transaction details are recorded for inventory management, sales analysis, and financial reporting purposes.

Types of POS transactions

There are several types of POS transactions, but there are three main types: online, offline, and return transactions

POS transaction type	What it is	Common examples
Online POS transactions	Transactions completed through an ecommerce store, where customers pay using a credit or debit card online. The POS system processes and records the sale just as it would in a physical store.	Online retail purchases, click-and-collect orders, ecommerce checkouts
Offline POS transactions	Transactions that take place in a physical retail location, with customers paying by credit card, debit card, or cash.	In-store purchases, restaurant payments, checkout counter transactions
Return transactions	Reverse transactions that occur when a customer returns a product. The POS system processes the refund and returns funds to the customer's card or provides a cash refund.	Product returns, exchanges with refunds, in-store refund requests
Mobile POS transactions	Transactions processed using a smartphone or tablet instead of a fixed checkout terminal. Mobile POS systems are commonly used in flexible or on-the-go selling environments.	Pop-up shops, trade shows, market vendors, curbside sales, field service businesses

POS transaction type

What it is

Common examples

Online POS transactions

Transactions completed through an ecommerce store, where customers pay using a credit or debit card online. The POS system processes and records the sale just as it would in a physical store.

Online retail purchases, click-and-collect orders, ecommerce checkouts

Offline POS transactions

Transactions that take place in a physical retail location, with customers paying by credit card, debit card, or cash.

In-store purchases, restaurant payments, checkout counter transactions

Return transactions

Reverse transactions that occur when a customer returns a product. The POS system processes the refund and returns funds to the customer's card or provides a cash refund.

Product returns, exchanges with refunds, in-store refund requests

Mobile POS transactions

Transactions processed using a smartphone or tablet instead of a fixed checkout terminal. Mobile POS systems are commonly used in flexible or on-the-go selling environments.

Pop-up shops, trade shows, market vendors, curbside sales, field service businesses

NuORDER Payments

In the realm of wholesale eCommerce software, NuORDER Payments allows brands to accept payments made with major credit cards–with competitive, pre-negotiated rates and all. Thanks to these direct payments, brands no longer need to set up third-party payment providers or merchant accounts or deal with the complexities of PCI compliance. Instead, businesses can receive payment safely, securely, and in less time, while offering incredible convenience to their wholesale partners. For more client relationship-building tips, read our blog post on engaging with new accounts.

With NuORDER Payments, buyers have their own digital wallets where they can store multiple credit cards for future wholesale payments. And brands get paid faster: the point-of-sale system requires less than 24 hours to settle transactions. The safe and secure system also offers such conveniences as auto-shipping calculations at checkout and collections of upfront shipping payments; it creates ease, simplifies operations, and reduces financial risk. Finally, the NuORDER Payments dashboard is a centralized hub for accessing tax compliance support and viewing daily transactions and monthly reports.

NuORDER Payments fully integrates with brands’ ERP to automate authorizations, refunds, and future billing, such as payments collected upon shipping.