What is Payment Processing Software?

Payment processing software powers credit and debit card purchases. When customers make a purchase online, they enter their payment and shipping information into a payment gateway. The payment gateway gives that payment information to the payment processor, which then communicates with both the customer’s and merchant’s banks to complete the transaction. The transaction’s success or failure is reported back to the payment gateway and the customer. In a brick-and-mortar store, a customer’s credit or debit card is swiped into a point of sale (POS) system, which communicates with a payment processor to approve or deny the purchase. Many payment processors charge a fee for each transaction based on the size of the purchase. Some payment processors have an embedded payment gateway or POS system to create a seamless experience. Any time a credit or debit transaction is attempted, a payment processor is needed. With the rise of digital wallets, payment processors have expanded their functionality to include digital currency and the transfer of money from a source such as Venmo or PayPal to an e-commerce or brick-and-mortar store. Some can process an e-check or set up recurring payments. Key Benefits of Payment Processing Software Processing payments made by credit, debit, and gift cards as well as digital wallets Creating a seamless experience for customers Determining whether or not payment is valid before fulfilling an order or completing a transaction Communicating with a variety of banks to accept payment from anywhere in the world

Why Use Payment Processing Software?

Security — Payment information is extremely sensitive, so it needs protection. Payment processing software is held to high security standards to protect this sensitive information. Scalability — A small business can use the same payment processor as a large enterprise, with little difference in functionality. Payment processors operate behind the scenes, and companies pay fees to use them. If a small business picks the right payment processor when it starts out, it may never need to change payment processors as their needs increase. Some payment processors handle billing and invoicing, so some internal processes are covered. Flexibility — Most payment processors handle a wide variety of payments. All payment processors process credit and debit cards, but more are accepting payments from digital wallets, cryptocurrencies, and electronic checks. Some facilitate automatic payments to provide consumers and merchants an added convenience of regular payments. The more options provided to the consumer, the more opportunities a merchant has to make a sale, so it’s in a business’ best interest to utilize a payment processor with a variety of features.

Who Uses Payment Processing Software?

E-commerce businesses — E-commerce businesses rely on payment processing software because that is how they receive all payments. Payment processors integrate with the payment gateway an online business uses or the payment processor has its own payment gateway. Some e-commerce platforms have built-in gateways or processors, eliminating the need to choose a specific one.Because payment processors typically charge fees for each transaction, an e-commerce business needs to be mindful of the processor they choose because all their transactions are carried out by the payment processor. Brick-and-mortar businesses — Brick-and-mortar businesses use payment processors to process credit cards and other non-cash payments. Typically, a processor is integrated with the POS system used by the store, but an all-in-one POS system might include a payment processor. Since most shoppers use some kind of card to make purchases, a payment processor is a necessity. Business to business businesses — Every business collects payments in one form or another but businesses that cater to serving other businesses have a unique challenge. Some payment processors are equipped to accept e-checks and lines of credit, and integrate with billing and invoicing software to ensure payments are made and the proper documentation is created. Recurring and automatic payments are useful if a business functions on a subscription model.

Page 12 | Best Payment Processing Software: User Reviews from October 2026

ScanPay

ScanPay unites dispatch, job costing, team payouts, and secure customer payments in one mobile-first workspace built for North-American home-service teams. Dispatchers see live job boards, route techs in seconds, and lock-in profit targets before work even starts. Technicians receive assignments, track time, generate branded invoices, and collect card or bank payments on the same device—no extra hardware required. Accounting stays simple: commissions, referral payment, and adjustments flow into a single pay-run view, ready to sync with QuickBooks in two clicks. Real-time profitability dashboards surface margin warnings so owners can course-correct before costs overrun. Thousands of plumbers, locksmiths, HVAC and cleaning businesses choose ScanPay because it combines premium field-service functionality with the industry’s lowest payment rate—2.5 % per transaction—without seat fees or annual contracts. Instant payouts put cash in the bank in minutes, not days, keeping crews supplied and payrolls on time. Why switch: ScanPay offers the essential tools for field service management, without the bloated costs. No contracts. No seat fees. No onboarding or training charges. Just a flat 2.5% per card transaction and a dedicated support team that actually picks up the phone. Start free, upgrade only when you need advanced features.

Average Rating: 5.0/5.0

Total Reviews: 3

How Do G2 Users Rate ScanPay?

Has the product been a good partner in doing business?: 10.0/10 (Category avg: 8.8/10)
Self Service Portal: 10.0/10 (Category avg: 8.6/10)
Level 3: 10.0/10 (Category avg: 7.8/10)
Accounting integration: 10.0/10 (Category avg: 8.4/10)

Who Is the Company Behind ScanPay?

Seller: ScanPay
Year Founded: 2021
HQ Location: Redwood City, California
LinkedIn® Page: www.linkedin.com
1 employees on LinkedIn®

Who Uses This Product?

Company Size: 100% Small

What Do G2 Reviewers Say About ScanPay?

AI-generated summary from verified user reviews

Pros

Users praise the amazing customer support from ScanPay, enhancing their overall experience and satisfaction.
Users value the cost-saving features of ScanPay's invoice management and appreciate its exceptional customer service.
Users value the cost savings on invoices and exceptional customer service offered by ScanPay since day one.

What Are Recent G2 Reviews of ScanPay?

"Amazing customer service by Alex, Michael and Avinash and others!"

Rating: 5.0/5.0 stars

— Robert P.

Best Payment Processing Software - Page 12

How Many Payment Processing Software Products Does G2 Track?

Category Stats (Oct 2026)

How Does G2 Rank Payment Processing Software Products?

G2 Grid® for Payment Processing Software

How Do G2 Users Rate ScanPay?

Who Is the Company Behind ScanPay?

Who Uses This Product?

What Do G2 Reviewers Say About ScanPay?

Pros

What Are Recent G2 Reviews of ScanPay?

How Do G2 Users Rate Slice?

Who Is the Company Behind Slice?

Who Uses This Product?

What Are Recent G2 Reviews of Slice?

How Do G2 Users Rate Swipe Simple?

Who Is the Company Behind Swipe Simple?

Who Uses This Product?

What Do G2 Reviewers Say About Swipe Simple?

Pros

What Are Recent G2 Reviews of Swipe Simple?

AI can help you find the answers. G2 helps you trust them.

How Do G2 Users Rate Vanco?

Who Is the Company Behind Vanco?

Who Uses This Product?

What Are Recent G2 Reviews of Vanco?

What Are G2 Users Discussing About Vanco?

How Do G2 Users Rate WEX Field Service Management?

Who Is the Company Behind WEX Field Service Management?

Who Uses This Product?

What Are Recent G2 Reviews of WEX Field Service Management?

What Are G2 Users Discussing About WEX Field Service Management?

How Do G2 Users Rate Zum?

Who Is the Company Behind Zum?

Who Uses This Product?

What Do G2 Reviewers Say About Zum?

Pros

What Are Recent G2 Reviews of Zum?

What Are G2 Users Discussing About Zum?

How Do G2 Users Rate Actum Processing?

Who Is the Company Behind Actum Processing?

Who Uses This Product?

What Do G2 Reviewers Say About Actum Processing?

Pros

What Are Recent G2 Reviews of Actum Processing?

How Do G2 Users Rate AxxonPay?

Who Is the Company Behind AxxonPay?

Who Uses This Product?

What Are Recent G2 Reviews of AxxonPay?

How Do G2 Users Rate Bottomline Connectivity Services?

Who Is the Company Behind Bottomline Connectivity Services?

Who Uses This Product?

What Do G2 Reviewers Say About Bottomline Connectivity Services?

Pros

Cons

What Are Recent G2 Reviews of Bottomline Connectivity Services?

What Are G2 Users Discussing About Bottomline Connectivity Services?

How Do G2 Users Rate EveryBill?

Who Is the Company Behind EveryBill?

Who Uses This Product?

What Do G2 Reviewers Say About EveryBill?

Pros

What Are Recent G2 Reviews of EveryBill?

How Do G2 Users Rate LinkPay?

Who Is the Company Behind LinkPay?

Who Uses This Product?

What Do G2 Reviewers Say About LinkPay?

Pros

What Are Recent G2 Reviews of LinkPay?

How Do G2 Users Rate Marqeta?

Who Is the Company Behind Marqeta?

Who Uses This Product?

What Do G2 Reviewers Say About Marqeta?

Pros

Cons

What Are Recent G2 Reviews of Marqeta?

How Do G2 Users Rate Mastercard Open Banking (formerly Finicity)?

Who Is the Company Behind Mastercard Open Banking (formerly Finicity)?

Who Uses This Product?

What Do G2 Reviewers Say About Mastercard Open Banking (formerly Finicity)?