ISV Payments Explained: How They Work + 3 Integration Models
What Are ISV Payments?
ISV payments refer to payment processing capabilities embedded directly into software applications developed by Independent Software Vendors (ISVs). Instead of merchants using separate payment terminals, they can collect payments, manage subscriptions, and track finances within the same software they use to run their day-to-day operations.
How they work:
ISVs do not process payments themselves. Instead, they partner with payment processors (e.g., Stripe, Fiserv, Global Payments) to embed transaction capabilities natively into their software using APIs and SDKs.
Benefits for ISVs:
- New revenue stream: By partnering with processors, ISVs often earn a percentage (revenue share) of every transaction their users process.
- Increased retention: When payments are tied to software operations, customers are less likely to switch to competitor software.
- Seamless flow: Customers make payments directly on the platform (e.g., a gym scheduling app or a restaurant POS system).
- Auto-reconciliation: Because the processor is built-in, transactions automatically update a business’s inventory, invoices, and accounting records.
This is part of a series of articles about ISV partners.
In this article:
ISV payments work by embedding payment processing functionality directly into a software platform. Instead of using a separate payment provider or external terminal, merchants can accept payments within the same application they use to manage their business operations. This creates a more direct workflow and reduces the need to switch between systems.
The process usually starts when an ISV partners with a payment processor, acquiring bank, or payment facilitator (PayFac):
- The payment provider supplies APIs and infrastructure that allow the ISV to integrate payment acceptance into its software.
- Once integrated, merchants using the software can onboard, process payments, issue refunds, and manage transactions without leaving the platform.
- When a customer makes a payment, the transaction data is securely transmitted through the integrated payment gateway to the payment processor.
- The processor communicates with the card networks and the customer’s bank to authorize the payment.
- After approval, the funds are settled into the merchant’s account, typically within one to three business days.
Many ISV payment platforms also include features beyond basic payment acceptance, such as recurring billing, invoicing, subscription management, reporting, fraud prevention, tokenization, and customer data management. Because the payment functionality is built into the software, transaction data can automatically sync with other business workflows such as accounting, inventory management, scheduling, or customer relationship management.
In many cases, ISVs use a PayFac model to simplify onboarding and compliance. Under this model, the ISV acts as a master merchant and manages sub-merchants within its platform.
ISV Payments vs. Traditional Payment Processing
Traditional payment processing typically involves standalone hardware terminals or separate gateways that are not directly connected to business management software. Merchants often need to manually reconcile payment data with their operational systems, which increases administrative workload and the potential for errors. Customer experiences can also be inconsistent when switching between different platforms for billing, reporting, and payments.
ISV payments combine payment processing within the core software solution, automating reconciliation and data synchronization. This streamlines back-office operations and offers a more cohesive experience for staff and customers. ISVs can also customize the payment flow to fit industry-specific needs, whereas traditional processing is less flexible and more generic. The result is improved efficiency, reduced costs, and new revenue opportunities for software vendors.
ISV Payment Integration Models
Referral Model
The referral model is the simplest ISV payment integration approach. In this model, the ISV partners with a payment processor and refers customers to that provider for payment services. The ISV typically receives a commission or revenue share for each referred merchant that activates payment processing. Integration is minimal, often limited to links, co-branded landing pages, or basic APIs to support the referral process.
What makes this useful:
Because the ISV does not manage payment processing directly, it avoids operational and compliance burdens. However, this model limits the ISV’s control over the user experience, as the payment provider handles onboarding, support, and transaction management. The referral model suits ISVs that want to offer payment functionality without deep technical or regulatory involvement.
Integrated Payments Model
The integrated payments model involves a deeper technical partnership between the ISV and the payment processor. The ISV embeds payment processing capabilities directly into its software using APIs or SDKs. This allows users to accept payments within the application. The ISV can brand the payment experience, manage workflows, and control elements of merchant onboarding and reporting.
What makes this useful:
This model gives ISVs more influence over the payment process and user experience but requires greater technical investment. The ISV is responsible for integrating and maintaining the payment features and may need to address compliance considerations. The integrated payments model is common among vertical SaaS platforms and POS systems seeking a unified software and payment solution.
PayFac or Payment Facilitator Model
The PayFac (payment facilitator) model allows the ISV to act as a master merchant, onboarding sub-merchants directly under its umbrella. This model offers the most control and potential revenue for the ISV, as it can set pricing, manage risk, and deliver a branded payment experience. The ISV handles onboarding, compliance, settlement, and sometimes risk management, providing near-instant setup for sub-merchants.
Considerations:
However, the PayFac model is also the most complex and resource-intensive. ISVs must invest in compliance, risk management, and operational infrastructure to support sub-merchants. This approach suits established ISVs with significant transaction volumes and technical resources and requires ongoing oversight of regulatory and operational risks.
ISV Payments Use Cases and Examples
1. Vertical SaaS Platforms
Vertical SaaS platforms serve niche industries such as healthcare, legal, or fitness, where specialized workflows are critical. By integrating payments, these platforms allow professionals to manage appointments, invoices, and payments within the same system. For example, a dental practice management SaaS can accept patient payments, manage billing, and reconcile accounts automatically.
In these environments, ISV payments help automate industry-specific billing needs, such as recurring payments, insurance claims, or split payments between providers. The payment integration supports compliance with sector regulations, such as HIPAA in healthcare or PCI DSS in financial services.
Example:
A veterinary clinic uses a practice management platform that handles appointment scheduling, patient records, invoicing, and payments. Pet owners can pay invoices directly through the platform, and completed payments automatically update the clinic’s billing and accounting records.
2. Marketplaces and Platforms
Marketplaces and multi-vendor platforms require complex payment flows, such as splitting payments between sellers, holding funds in escrow, or managing refunds. ISV payment integration enables these platforms to manage transactions directly, automate payouts, and provide a consistent checkout experience. For example, a freelance marketplace can onboard new sellers, accept client payments, and distribute funds within the platform.
Payment integration also supports features such as real-time reporting, customizable fees, and automated compliance checks. Marketplaces can reduce manual intervention and support scaling operations while maintaining trust among buyers and sellers.
Example:
A home services marketplace connects homeowners with local contractors. Customers pay through the platform, which automatically deducts a service fee and distributes the remaining funds to the contractor after the job is completed.
3. Subscription Software
Subscription-based software platforms rely on recurring billing, automated invoicing, and customer lifecycle management. ISV payments allow these platforms to handle monthly or annual charges, manage upgrades or downgrades, and process failed payments without manual intervention. This is important for SaaS products targeting B2B or B2C audiences.
Integrated payment solutions can also offer billing options such as usage-based pricing, free trials, or promotional discounts. By embedding these features, subscription software platforms can automate dunning processes and provide real-time revenue analytics.
Example:
A project management SaaS platform charges customers monthly based on the number of active users. Payments are processed each billing cycle automatically, and the platform handles failed payment retries, plan upgrades, and invoice generation without manual intervention.
4. Field Services
Field service management platforms support businesses like HVAC, plumbing, or landscaping, where payments often occur on-site. ISV payments enable technicians to accept card or mobile payments through integrated mobile apps, reducing delays and paperwork.
The integration also allows field service businesses to generate invoices, capture signatures, and update records in real time. Payment data syncs automatically with back-office systems for reconciliation and reporting.
Example:
An HVAC technician completes a repair at a customer’s location and accepts payment through a mobile field service app. The payment is processed immediately; the invoice is marked as paid, and the transaction is automatically synchronized with the company’s accounting system.
Challenges of ISV Payments
Compliance Complexity
Compliance with payment regulations is a major challenge for ISVs integrating payments. Payment Card Industry Data Security Standard (PCI DSS), anti-money laundering (AML) laws, and local financial regulations require strict controls over data security and transaction monitoring. ISVs must work with their payment partners to ensure that sensitive data is protected and that their software adheres to industry standards.
Staying current with regulations can be resource-intensive, especially when operating in multiple regions or industries. Non-compliance can lead to fines, reputational damage, or loss of payment processing capabilities.
Integration Workload
Integrating payment processing into software applications is a significant technical undertaking. ISVs must design, build, and maintain secure payment workflows, handle edge cases, and ensure uptime and reliability. This often requires dedicated development resources and ongoing support to address bugs, API changes, or new features.
The integration workload extends beyond initial development. ISVs must update their integration to accommodate new payment methods, regulatory requirements, or changes from their payment partners.
Risk and Chargebacks
Handling payment risk and chargebacks is an operational challenge for ISVs. Fraudulent transactions, disputed charges, and unauthorized payments can result in financial losses for merchants and software providers. While payment processors often absorb part of the risk, ISVs operating under integrated payments or PayFac models may share responsibility for monitoring suspicious activity and managing disputes.
Chargeback management can also create administrative overhead. ISVs may need to provide transaction records, customer communication history, or proof of service to help merchants respond to disputes. High chargeback rates can lead to increased processing fees, account restrictions, or termination from payment networks.
Related content: Read our guide to chargeback protection.
Key Features to Look for in an ISV Payment Solution
Here are some of the main capabilities to consider when evaluating ISV payment solutions.
1. Simple API and Developer Tools
An ISV payment solution should provide well-documented APIs, SDKs, and developer resources that simplify integration. Clear documentation, sample code, testing environments, and support tools help reduce development time and make it easier to build reliable payment workflows.
Flexible APIs allow ISVs to customize the payment experience to fit their software and industry requirements. Developer platforms should support common programming languages, modern authentication methods, and webhook functionality for real-time transaction updates.
Aspects to consider:
- Comprehensive API documentation and code samples.
- SDKs for common programming languages and frameworks.
- Sandbox environment for testing integrations.
- Webhooks for real-time transaction and event notifications.
- Versioning and backward compatibility support.
2. Merchant Onboarding
Efficient merchant onboarding is critical for reducing friction and accelerating payment adoption. An ISV payment solution should allow businesses to complete onboarding directly within the software platform, avoiding manual application processes or redirects to external systems.
Features such as digital identity verification, automated underwriting, and electronic document submission can shorten activation times. Embedded onboarding workflows also help businesses reduce operational delays and improve user experience during account setup. Many platforms provide real-time application status tracking and automated compliance checks to simplify merchant approval processes.
Aspects to consider:
- Embedded onboarding within the software application.
- Automated KYC and identity verification workflows.
- Real-time application review and approval status.
- Digital document collection and electronic signatures.
- Support for onboarding businesses in multiple regions.
3. Payment Method Support
ISV payment platforms should support a range of payment methods, including credit and debit cards, ACH transfers, digital wallets, contactless payments, and recurring billing options. Organizations operating internationally may also require multi-currency support and localized payment methods.
Support for multiple payment methods helps businesses offer flexible checkout and billing experiences to customers. ISV payment platforms should support in-person, online, and mobile transactions while enabling recurring billing, subscription payments, and stored payment methods. Broad payment support also helps organizations serve customers across different regions, devices, and purchasing preferences.
Aspects to consider:
- Support for credit cards, debit cards, and ACH payments.
- Digital wallet compatibility (e.g., Apple Pay, Google Pay).
- Recurring billing and subscription payment capabilities.
- In-person, online, and mobile payment support.
- Multi-currency and international payment options.
4. Reporting and Reconciliation
Integrated reporting and reconciliation tools help businesses track transactions, monitor cash flow, and reduce manual accounting work. An ISV payment solution should provide real-time dashboards, downloadable reports, and automated reconciliation between payments and business records.
Advanced reporting features can also provide insights into sales trends, refund activity, subscription metrics, or customer behavior. Automated reconciliation reduces the need for manual matching between invoices, deposits, and payment records. Many platforms also support customizable reporting filters, scheduled exports, and accounting software integrations.
Aspects to consider:
- Real-time transaction and settlement dashboards.
- Automated reconciliation between payments and invoices.
- Exportable reports for accounting and financial analysis.
- Customizable filters and reporting views.
- Integrations with accounting and ERP systems.
5. Security and Compliance
Security is a primary consideration in any payment integration. ISV payment solutions should support PCI DSS compliance, data encryption, tokenization, and secure authentication methods to protect sensitive payment information.
Compliance features should also address fraud prevention, transaction monitoring, and regulatory requirements such as AML or Know Your Customer (KYC) checks. Many platforms include risk scoring, suspicious activity detection, and automated fraud screening to reduce payment-related threats. Tokenization helps prevent exposure of sensitive cardholder data during transactions and storage.
Aspects to consider:
- PCI DSS-compliant payment processing infrastructure.
- Tokenization and encryption of payment data.
- Built-in fraud detection and risk monitoring tools.
- Support for KYC, AML, and other regulatory requirements.
- Multi-factor authentication and role-based access controls.
How to Choose an ISV Payment Provider
Choosing the right ISV payment provider requires more than comparing transaction fees. The partner should support integration, scalable payment processing, strong security, transparent pricing, and reliable operational support. For ISVs, the provider should make it easier to embed payments into the software experience while helping merchants process transactions and manage risk:
- Integration flexibility: Look for a provider that supports API integration, e-commerce platforms, software workflows, and custom payment solutions.
- Unified payment experience: Choose a provider that brings payment processing, software, hardware, reporting, and operational tools into one environment.
- Transparent pricing: Pricing should be clear and predictable, without hidden fees.
- Fast approvals and onboarding: A provider should help merchants get approved and activated quickly.
- Security and fraud protection: Look for fraud monitoring, secure transaction handling, and compliance support.
- Chargeback management: The provider should offer tools and support for managing disputes and reducing chargeback losses.
- Reporting and analytics: Prioritize providers that offer clear dashboards, transaction visibility, and reconciliation tools.
- Scalability: The payment provider should support growth across channels, transaction volumes, and business models.
- Payment method support: A provider should support card payments, digital invoices, online payments, in-person payments, mobile payments, and recurring billing as needed.
- Operational support: Look for responsive service, technical support, and underwriting guidance.
- Industry fit: The provider should understand the ISV’s target market.
- Long-term partnership potential: Choose a payment provider that can support long-term business growth and product expansion.
How Luqra Helps ISVs Embed and Manage Payments
For Independent Software Vendors looking to add payments without building a processing operation from scratch, Luqra ERP brings the entire payment business into one platform. Luqra is a financial technology company that pairs streamlined payment processing with a purpose-built ERP, giving software vendors, banks, and FinTechs a single interface to manage the full payment lifecycle, from merchant onboarding and payment processing to compliance, reporting, and portfolio management, while allowing partners to maintain complete control of their customer experience.
Key capabilities of Luqra ERP:
- White-label payment solutions: Deliver a fully branded payment experience that keeps your company’s identity front and center, allowing merchants to interact with your platform instead of a third-party processor.
- Embedded payments: Integrate payment acceptance directly into your software through flexible APIs and developer-friendly tools, creating a seamless experience across web, mobile, and POS environments.
- Merchant lifecycle management: Manage the entire merchant journey from a single platform, including merchant boarding, KYC/KYB verification, underwriting, activation, and ongoing portfolio monitoring.
- Payment processing built for scale: Payments, processing, and approval management are designed for speed and simplicity, enabling ISVs to support growing transaction volumes without increasing operational complexity.
- Tokenization and secure vaulting: PCI-compliant tokenization securely stores payment credentials for recurring billing, card-on-file transactions, subscription payments, and automatic account updates.
- Split payments and automated payouts: Support marketplace-style payment routing, revenue sharing, and automated disbursements from a centralized platform.
- Seamless integrations: Connect payment endpoints, software platforms, and financial data into a single source of truth, eliminating silos across e-commerce, mobile, and in-person payments.
- Security and compliance: Built-in security, compliance automation, and predictive monitoring help ISVs and their merchants stay ahead of evolving regulatory requirements while reducing operational risk.
- Proactive fraud and chargeback management: Monitor transactions across every merchant and portfolio to identify suspicious activity early and help minimize fraud losses and chargebacks.
- 360° reporting and analytics: Drill-down reporting provides complete visibility into merchant performance, transaction activity, underwriting, funding, and portfolio health, helping partners make informed business decisions while reducing operating costs.
To see how Luqra ERP can power payments inside your software, explore Luqra’s Financial ERP platform.