# Best Payment Processing Software - Page 19

## How Many Payment Processing Software Products Does G2 Track?

**Total Products under this Category:** 557

### Category Stats (Aug 2026)

- **Average Rating:** 4.35/5 (↓0.03 vs Jul 2026) The average rating of products in this category, based on all submitted ratings
- **Top Trending Product:** QuickBooks Payments (+2.83%) - Among all products in this category, QuickBooks Payments recorded the largest rating increase compared to last month

_Last updated: August 05, 2026_

## How Does G2 Rank Payment Processing Software Products?

**Why You Can Trust G2's Software Rankings:**

- 30 Analysts and Data Experts
- 21,900+ Authentic Reviews
- 557+ Products
- Unbiased Rankings

G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

## G2 Grid® for Payment Processing Software
 ![G2 Grid® for Payment Processing Software plotting products by satisfaction and market presence](https://www.g2.com/categories/payment-processing/grids.png?focus%5B%5D=1222&focus%5B%5D=15655&focus%5B%5D=59025&focus%5B%5D=6006&focus%5B%5D=4311&focus%5B%5D=97943&focus%5B%5D=1370291&focus%5B%5D=1191)

Highlighted products: PayPal Payments, Amazon Pay for Business, Venmo, BILL AP/AR, Adyen Payments, Stripe Payments, Nickel, and FreshBooks.

Underlying data: [Grid® JSON](https://www.g2.com/categories/payment-processing/grids.json?focus%5B%5D=paypal&focus%5B%5D=amazon-pay-for-business&focus%5B%5D=paypal-venmo&focus%5B%5D=bill-ap-ar&focus%5B%5D=adyen-payments&focus%5B%5D=stripe-stripe-payments&focus%5B%5D=nickel&focus%5B%5D=freshbooks)

**Sponsored**

### Capsule CRM

Capsule CRM is a growth-oriented customer relationship management (CRM) tool that empowers salespeople, marketers, and business owners to win more business, retain more clients, and deliver exceptional work. With a focus on simplicity and efficiency, our 10,000+ global customers are attracted by our excellent value and incredible support.

[Visit website](https://www.g2.com/external_clickthroughs/record?secure%5Bad_program%5D=ppc&secure%5Bad_slot%5D=category_product_list_llm&secure%5Bcategory_id%5D=1975&secure%5Bchosen_at%5D=2026-08-07T21%3A12%3A28Z&secure%5Bdisplayable_resource_id%5D=179&secure%5Bdisplayable_resource_type%5D=Category&secure%5Bmedium%5D=sponsored&secure%5Bplacement_reason%5D=retargeted_product&secure%5Bplacement_resource_ids%5D%5B%5D=1585&secure%5Bprioritized%5D=false&secure%5Bproduct_id%5D=1585&secure%5Bresource_id%5D=1975&secure%5Bresource_type%5D=Category&secure%5Bsource_type%5D=category_page&secure%5Bsource_url%5D=https%3A%2F%2Fwww.g2.com%2Fcategories%2Fpayment-processing%3FhsCtaTracking%3Da15f9a47-d2d3-4a09-bb8b-c434c5dbfc62%257C078495b8-b7a6-4d69-a4c5-7a7dc02ccf3d%26page%3D19&secure%5Btoken%5D=d046f19ef96b98bddcc4516f3c813d316ab09ac6b71ffe786285d81ff5c7437a&secure%5Burl%5D=https%3A%2F%2Fcapsulecrm.com%2Fcampaign%2Fyour-crm-alternative%2F%3Futm_source%3Dg2%26utm_medium%3Dcpc%26utm_campaign%3Dalternatives&secure%5Burl_type%5D=custom_url)

### [Airpay](https://www.g2.com/products/airpay/reviews)

Airpay offers payment processing services and solutions.

#### Who Is the Company Behind Airpay?

- **Seller:** [Airpay Payment Services](https://www.g2.com/sellers/airpay-payment-services)
- **Year Founded:** 2012
- **HQ Location:** Mumbai, IN
- **LinkedIn® Page:** [in.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=9988feed5df30d3eacf5e7911df1c24590e245b589ab31d6a800fa29be7d805d&secure%5Burl%5D=https%3A%2F%2Fin.linkedin.com%2Fcompany%2Fairpay-india&secure%5Burl_type%5D=linkedin_company_website)  
620 employees on LinkedIn®

### [AltoPay](https://www.g2.com/products/altopay/reviews)

AltoPay is a global payment solution provider. We simplify the complexities of payments so businesses can grow with confidence.

#### Who Is the Company Behind AltoPay?

- **Seller:** [AltoPay](https://www.g2.com/sellers/altopay)
- **Year Founded:** 2010
- **HQ Location:** Miami, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=6047d60de86834b2bc9b62acdaf955fca934524be745c3f781888e421237dd83&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Faltopay&secure%5Burl_type%5D=linkedin_company_website)  
12 employees on LinkedIn®

### [Amaryllis](https://www.g2.com/products/amaryllis/reviews)

Amaryllis offers a comprehensive, cloud-based Payment Facilitation platform designed to empower financial institutions, software companies, and SaaS providers to efficiently monetize the payments flowing through their systems. By providing an all-in-one solution, Amaryllis enables businesses to underwrite merchants, accept credit card and ACH payments, split fees, and manage payouts without the need for extensive in-house development or multiple vendor integrations. This approach allows companies to rapidly enter the market, enhance their revenue streams, and increase their overall business valuation. Key Features and Functionality: - White-Label Solution: Customize and control the merchant experience by branding the platform to align with your company's identity, ensuring a seamless user experience. - Modular Design: Utilize a flexible, modular architecture that allows for easy customization and scalability, enabling businesses to implement only the features they need and adapt as they grow. - Seamless Integration: Integrate effortlessly with existing systems through API-driven solutions, allowing for the use of Amaryllis as a gateway or the incorporation of existing gateways into the platform. - Merchant Onboarding: Streamline the onboarding process with minimal data requirements, supporting rapid growth while maintaining compliance with risk and regulatory standards. - Transaction Processing: Accept a wide range of payment methods, including alternative payments like PayPal and digital wallets, with support for multiple currencies and smart routing to optimize authorizations. - Billing and Payouts: Manage complex billing agreements with configurable split fees and flexible payout schedules, accommodating various business models and financial arrangements. - Risk and Compliance Management: Leverage a comprehensive suite of risk management tools, including fraud detection, alert notifications, and compliance monitoring, to mitigate risks and ensure adherence to regulatory requirements. Primary Value and Solutions Provided: Amaryllis addresses the challenges businesses face in managing complex payment processes by offering a unified, customizable platform that simplifies payment facilitation. By eliminating the need for multiple vendors and reducing reliance on internal IT resources, Amaryllis enables companies to: - Accelerate Time to Market: Launch payment facilitation capabilities within weeks, allowing businesses to quickly capitalize on new revenue opportunities. - Enhance Revenue Streams: Monetize the payments processed through their platforms, leading to increased revenue and higher business valuations. - Improve Customer Experience: Offer a superior buying experience by embedding seamless payment processes into their products, fostering customer satisfaction and loyalty. - Ensure Compliance and Security: Maintain compliance with industry standards such as PCI, GDPR, and SOC, providing peace of mind and reducing the risk of regulatory issues. By leveraging Amaryllis's platform, businesses can efficiently manage their payment operations, reduce operational costs, and focus on core growth initiatives without the complexities traditionally associated with payment facilitation.

#### Who Is the Company Behind Amaryllis?

- **Seller:** [Amaryllis](https://www.g2.com/sellers/amaryllis)
- **Year Founded:** 2011
- **HQ Location:** West Palm Beach, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=e7302325b93e326dffbe25db2c6fbe78aec995d545b9a917ddd45217eb3b4cfe&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Famaryllis-payment-solutions&secure%5Burl_type%5D=linkedin_company_website)  
47 employees on LinkedIn®

### [A-Pay](https://www.g2.com/products/a-pay-start-accepring-payments-on-your-website-in-24-hours-a-pay/reviews)

Start accepting payments from users in Asia and Africa in 1 day. Process VISA, Mastercard and 100+ local payment methods. Increase profitability with expanded geography and improved payment conversion.

#### Who Is the Company Behind A-Pay?

- **Seller:** [A-Pay](https://www.g2.com/sellers/a-pay-adb73d29-2ccb-4b5f-9531-f81158e0a80c)
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b533326cdcf219d121759f1d6583152efbb03a9be2eda77f90d9565631084328&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Ftryapaycom%2F&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [AQURIT](https://www.g2.com/products/aqurit/reviews)

We took our flagship AQURIT™ product and rebuilt it for Windows 7 and beyond.

#### Who Is the Company Behind AQURIT?

- **Seller:** [AQ2 Technologies](https://www.g2.com/sellers/aq2-technologies-c0f2a617-f643-489a-8fcc-73fc4add7c8c)
- **Year Founded:** 1999
- **HQ Location:** Birmingham, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5d0e8019cb1ba6b3e8deaa54d52eed69bd2227acb03e87c5806a2cb9889c41b2&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Faq2-technologies&secure%5Burl_type%5D=linkedin_company_website)  
8 employees on LinkedIn®

### [Ascendant](https://www.g2.com/products/ascendant/reviews)

Ascendant is a leading global payments provider, making international payments effortless for businesses and financial institutions. Founded in 2011, we’re headquartered in Toronto, with offices across North America, the UK, and India. Our technology powers seamless payments in over 140 currencies to more than 235 countries and territories—backed by real people who care about your results. Our platform, aPay, and our proprietary Payee Intelligence™ deliver real-time payment tracking, automated compliance, and near-zero error rates—so our clients spend less time on admin and more time growing their business. Today, over 2,500 banks and 25,000 corporations trust Ascendant to move money quickly, securely, and transparently. We believe making payments should be simple. We’re here to help your business scale globally, with personal support every step of the way. Learn more at ascendant.world .

#### Who Is the Company Behind Ascendant?

- **Seller:** [Ascendant](https://www.g2.com/sellers/ascendant)
- **Year Founded:** 2011
- **HQ Location:** Pleasant Hill, US
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=1de955c799b18aa3bf91ef49520b0a752f716695397e33b53dff1551e830cb37&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fascendantfx-capital-corp&secure%5Burl_type%5D=linkedin_company_website)  
79 employees on LinkedIn®

### [AtoA Business](https://www.g2.com/products/atoa-business/reviews)

Atoa Payment App is an Open Banking-based payment solution for UK businesses. Any customer with a UK mobile banking app can pay using Atoa. At Atoa, we’re building a simpler, fairer way for businesses to get paid. We help UK businesses collect payments using Pay by Bank and cards, with lower fees, faster settlement, and less admin for finance teams. Pay by Bank is powered by secure open banking technology, allowing customers to pay directly from their banking app. Card payments are also supported at competitive rates, giving businesses flexibility across payment methods.

#### Who Is the Company Behind AtoA Business?

- **Seller:** [Atoa Payments](https://www.g2.com/sellers/atoa-payments)
- **Year Founded:** 2022
- **HQ Location:** London, GB
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=dfd4001061016b96565798ae82bad4a78f5afc2ce0c277f1d78663b5cdacc3fe&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fpaywithatoa&secure%5Burl_type%5D=linkedin_company_website)  
64 employees on LinkedIn®

### [AXPay](https://www.g2.com/products/axpay/reviews)

Specialized high risk payment gateway with expertise in iGaming. Get a merchant account and process payments for companies in any jurisdiction, licensed and unlicensed. Lightning-fast, secure payment processing for online casinos, sports betting, and high risk industries worldwide. AXPay was founded with a clear vision: to break down barriers in payment processing for high-risk industries. We recognized that legitimate businesses in sectors like iGaming, CBD, nutraceuticals, and others were being unfairly underserved by traditional payment processors. Our founders, with decades of combined experience in fintech and payment processing, set out to build a solution that would provide these businesses with the same level of service, security, and reliability that any business deserves. Today, we proudly serve over 500 businesses across multiple continents, processing millions of transactions monthly while maintaining the highest standards of security and compliance. Website - https://axpay.net/

#### Who Is the Company Behind AXPay?

- **Seller:** [AXPay](https://www.g2.com/sellers/axpay)
- **HQ Location:** N/A
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=66ab4e89b6454046eed720f0213c32fce655dc4518a92e17e4b546710544c553&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Faxpay%2F&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Azupay](https://www.g2.com/products/azupay/reviews)

Azupay is an Australian fintech company specializing in real-time payment solutions that leverage the New Payments Platform to facilitate instant, secure, and cost-effective transactions for businesses, governments, and financial institutions. By utilizing NPP technologies such as PayID and PayTo, Azupay enables organizations to process payments 24/7, enhancing cash flow and operational efficiency. Key Features and Functionality: - PayID for Business: Allows businesses to accept real-time customer bank payments around the clock, streamlining cash flow and reconciliation processes while reducing transaction fees. - PayOut: Facilitates near-instant outbound payments to customers, suppliers, or employees, enabling efficient cash management and 24/7 payroll processing. - PayTo: Provides a convenient method for customers to authorize one-off and recurring payments, reducing missed payments and dishonors, and offering a self-managed payment experience. Primary Value and Problem Solved: Azupay addresses common challenges associated with traditional payment methods, such as delays, high operational costs, and reconciliation inefficiencies. By offering real-time payment solutions, Azupay eliminates credit card fees, reduces fraud risks, and accelerates access to funds, even during weekends and public holidays. This empowers businesses to focus on their core activities without the burden of managing cash flow or dealing with payment reconciliation issues.

#### Who Is the Company Behind Azupay?

- **Seller:** [Azupay](https://www.g2.com/sellers/azupay)
- **Year Founded:** 2019
- **HQ Location:** Sydney, AU
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ae49e7fbc5e63c556ac25b4d6cab82a05709f4e813ba64e09bbf876b9b472f25&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fazupay%2F&secure%5Burl_type%5D=linkedin_company_website)  
39 employees on LinkedIn®

### [beGateway](https://www.g2.com/products/begateway/reviews)

beGateway is a PCI DSS Level 1 certified white-label payment infrastructure platform for PSPs, acquiring banks and regulated payment institutions. It enables companies to launch and operate their own branded payment gateway with full control over integrations, routing logic and risk management. The platform supports multi-acquirer connectivity, intelligent routing and cascading, tokenisation, advanced fraud management and multi-currency processing across multiple regions. Designed for stability, scalability and operational control, beGateway powers both regional and enterprise-grade payment providers.

#### Who Is the Company Behind beGateway?

- **Seller:** [eComCharge](https://www.g2.com/sellers/ecomcharge)
- **Year Founded:** 2011
- **HQ Location:** Vilnius, Lithuania
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=d94a232ab4e33c75edbd060b833ebfb26d3cc45e7222d76e454c680853b222f0&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fecomcharge%2F&secure%5Burl_type%5D=linkedin_company_website)  
18 employees on LinkedIn®
- **Ownership:** Private Company
- **Phone:** +370632023059

### [Best of the year payment processor online software](https://www.g2.com/products/best-of-the-year-payment-processor-online-software/reviews)

Best of the year payment processor online software

#### Who Is the Company Behind Best of the year payment processor online software?

- **Seller:** [Payflow](https://www.g2.com/sellers/payflow)
- **HQ Location:** Chalgrove, GB
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=5652dd89ec96e83f154acc7c7f702d1896bb7b50df83c0d4b743c9551f1a68d3&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fpayflow&secure%5Burl_type%5D=linkedin_company_website)  
1 employees on LinkedIn®

### [Bill Payment Engine API](https://www.g2.com/products/bill-payment-engine-api/reviews)

ACI Bill Payment Application Program Interface (API) allows you to outsource your bill pay processing while maintaining control of the user interface.

#### Who Is the Company Behind Bill Payment Engine API?

- **Seller:** [ACI Worldwide](https://www.g2.com/sellers/aci-worldwide)
- **Year Founded:** 1975
- **HQ Location:** Coral Gables, US
- **Twitter:** @ACI\_Worldwide  
8,621 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=b022b0fa85d9978fd0356f4620a3bc4cccf199753ed62562d23e498887d0f78b&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F5063&secure%5Burl_type%5D=linkedin_company_website)  
4,944 employees on LinkedIn®
- **Ownership:** NASDAQ: ACIW

### [BizPayO](https://www.g2.com/products/bizpayo/reviews)

BizPayO lets professionals accept credit card and ACH payments online while recovering the processing fees. 100% compliant and ultra-secure.

#### Who Is the Company Behind BizPayO?

- **Seller:** [BizPayO](https://www.g2.com/sellers/bizpayo)
- **Year Founded:** 2013
- **HQ Location:** N/A
- **Twitter:** @bizpayo  
10 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=631c908e634611f711bd00934f0757dd3628e3a96afa4298298cd3cfab179ce8&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fbizpayo&secure%5Burl_type%5D=linkedin_company_website)  
2 employees on LinkedIn®

### [Blink Payment](https://www.g2.com/products/blink-payment/reviews)

Blink Payment is an all-in-one payment platform designed to help UK businesses streamline payments, reduce administrative burden, and improve cash flow. Our unified dashboard lets users manage payments across online, in-person, and phone channels, ensuring a seamless experience for every transaction. Blink Payment supports SMEs across diverse industries with complex payment requirements, such as property management, legal services, construction and timber merchants, storage and removals, tool and plant hire, and waste management. We focus on sectors where timely payments are essential for business success. In addition to serving direct merchants, Blink Payment partners with software providers to embed our payment infrastructure into their platforms. Our robust API enables software businesses to deliver a fully integrated payment experience for their customers, eliminating the need for in-house development. Key features and benefits: \* Accept payments via cards, open banking, digital wallets, and Direct Debit \* Offer paylinks, virtual terminals, batch payments, and recurring payment options \* Integrate natively with Xero, QuickBooks, and Sage for effortless accounting Trusted by thousands of UK businesses, Blink Payment also offers responsive UK-based support, with average response times of just 6 seconds. Why choose Blink Payment? Our platform is built with flexibility and scalability in mind, making it suitable for growing businesses as well as established enterprises. We understand that every business has unique payment needs, which is why our solution is highly customisable. From simple payment links to advanced automation and reconciliation tools, Blink Payment adapts to your workflows, helping you save time and reduce costly errors. Security is at the core of everything we do. Blink Payment is PCI DSS compliant and employs industry-leading encryption standards to safeguard sensitive data and transactions. Our platform is regularly updated to keep pace with the latest security threats, so you can focus on your business with peace of mind. We prioritise transparency, reliability, and a customer-first approach in every interaction. Our dedicated UK-based support team ensures help is always at hand, with an average response time of just 6 seconds. Whether you're looking to simplify your payment processes, provide a better experience for your customers, or integrate payments seamlessly into your software, Blink Payment is your trusted partner. Join thousands of satisfied clients who have transformed their payment operations with us.

#### Who Is the Company Behind Blink Payment?

- **Seller:** [Blink Payments](https://www.g2.com/sellers/blink-payments)
- **Year Founded:** 2012
- **HQ Location:** London, GB
- **Twitter:** @blinkpayment  
1,822 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=ed846090cb50fff6defed6ec5c3bc85d5d2db37a5b7b381ad7827042119f9398&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2Fblinkpayment%2F&secure%5Burl_type%5D=linkedin_company_website)  
139 employees on LinkedIn®

### [Bold](https://www.g2.com/products/bold-bold/reviews)

Bold operates a fintech company that allows small LATAM merchants to accept digital payments through credit and debit cards, national and international for both contactless and chip transactions, allowing businesses to unlock alternative payment methods and increase revenue

#### Who Is the Company Behind Bold?

- **Seller:** [Bold](https://www.g2.com/sellers/bold-bd005372-7475-4e81-8ed5-79b247f0baef)
- **Year Founded:** 2011
- **HQ Location:** Stockholm, SE
- **Twitter:** @boldscandinavia  
710 Twitter followers
- **LinkedIn® Page:** [www.linkedin.com](https://www.g2.com/external_clickthroughs/record?secure%5Bsource_type%5D=product_profile&secure%5Btoken%5D=38a1d5b6165b7983e69ef26cb736165cfdaa4d8f62c9f8c647d49c3bc4fb8d79&secure%5Burl%5D=https%3A%2F%2Fwww.linkedin.com%2Fcompany%2F1962546&secure%5Burl_type%5D=linkedin_company_website)  
68 employees on LinkedIn®

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Spotlight Categories

[Sales Performance Management Software](https://www.g2.com/categories/sales-performance-management)

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Similar Categories

- [Payment Gateways](/categories/payment-gateways)
- [Embedded Payments](/categories/embedded-payments)
- [Failed Payment Recovery](/categories/failed-payment-recovery)

- [Installment Payment and Buy Now Pay Later (BNPL)](/categories/installment-payment-and-buy-now-pay-later-bnpl)
- [Payment Analytics](/categories/payment-analytics)
- [Payment Card Issuance](/categories/payment-card-issuance)

- [Payments Orchestration](/categories/payments-orchestration)

[Browse Payment Processing Themes](/categories/payment-processing/themes)

 ![Subhransu Sahu](/assets/transparent-ad5be28fbcd25b7b08d2cebe1d957125437fb5407d75ee717965ad22c8808791.gif "Subhransu Sahu")
SS

Researched and written by [Subhransu Sahu](https://research.g2.com/insights/author/subhransu-sahu)

Updated April 9, 2026

Payment processing software helps businesses securely handle and track business-to-business (B2B) payments from customers and to suppliers. It supports any organization that accepts non-cash payments by ensuring transactions are timely, accurate, and integrated with downstream financial systems.

### Core Capabilities of Payment Processing Software

To qualify for inclusion in the Payment Processing category, a product must:

- Collect customer payment information and relay it to a bank for approval or denial
- Transmit approval or denial of a transaction back to the customer or merchant
- Support multiple payment methods such as credit card, ACH, or wire transfer
- Define and track customizable payment rules, terms, and deadlines
- Identify errors such as late payments, overpayments, or failed transactions
- Integrate with ERP, accounting, or accounts receivable and accounts payable systems

### How Payment Processing Software Differs from Other Tools

Payment processing software focuses on secure transaction handling and status verification, working closely with related tools such as [payment gateways](https://www.g2.com/categories/payment-gateways), [accounting software](https://www.g2.com/categories/accounting), [AP automation software](https://www.g2.com/categories/ap-automation), [e-commerce platforms](https://www.g2.com/categories/e-commerce-platforms), and [retail POS systems](https://www.g2.com/categories/retail-pos). Its distinguishing value lies in managing payment execution and error identification across diverse payment methods.

### Insights from G2 on Payment Processing Software

Based on category trends on G2, the importance of reliable transaction approval, seamless integrations, and accurate detection of payment issues to maintain smooth financial operations.

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