While an online store can approve an order in seconds, the financial exposure can last for weeks or even months. Should the customer qualify for a refund, fraud claim or chargeback, the processor for the payment platform may have to pay that amount long after the order has shipped or been delivered.
This complexity is introduced for online stores with regulated products or high exposure to financial exposure. Therefore, the ecommerce payment solutions for these companies should be capable of monitoring and connecting key financial metrics for the company, from underwriting and chargebacks to payment processing and order fulfillment.
Understanding the Ecommerce Payment Stack
An ecommerce payment processor is one part of a larger system. A store may also need a merchant account, gateway, shopping-cart integration, fraud platform, token vault and tools for disputes or recurring billing.
| Payment Component | Main Function |
|---|---|
| Ecommerce platform | Manages products, orders and the customer storefront |
| Checkout page | Collects the customer’s order and payment information |
| Payment gateway | Encrypts and transmits transaction data |
| Processor | Routes authorization and settlement messages |
| Merchant account | Provides the acquiring relationship and receives settled funds |
| Card network | Connects the acquiring and issuing sides |
| Issuing bank | Approves or declines the customer’s card |
| Fraud system | Scores or reviews suspicious transactions |
| Token vault | Replaces stored card details with reusable tokens |
| Dispute tools | Provide alerts, evidence and chargeback reporting |
A gateway is not the same as a merchant account. A gateway may integrate with the website and transmit payments correctly while the underlying processor still declines the business category. High-risk merchants need both technical compatibility and an acquiring bank that supports the business model.
Why High-Risk Ecommerce Needs Different Underwriting
For ecommerce, the transaction is a card-not-present transaction – the physical card is not read at the terminal. The information entered by the ecommerce store will determine whether the transaction is legitimate.
Ecommerce is often considered to be high risk because of the following reasons:
- regulated products
- free trials
- future delivery
- digital products
- international customers
- high ticket items
- long shipping timelines
- affiliate traffic
- high rates of ecommerce store refunds
- fraud at ecommerce stores
- previous termination of processing services by ecommerce store
- rapid growth in ecommerce store transactions
The products that are offered by an ecommerce store are not automatically considered acceptable for every transaction processing company. Each company and bank that offers acquiring services has its own policies regarding underwriting. An ecommerce company will be approved based upon the products that are offered, the ecommerce website, transaction history, and the customers that use the ecommerce store.
Why Ecommerce Payment Strategy Matters in 2026
According to the U.S. Census Bureau, ecommerce sales in the United States reached $326.7 billion during the first quarter of 2026, after adjusting for seasonal sales. This represents 16.9% of all retail sales in the United States and demonstrates a 9.8% increase over sales in the first quarter of 2025.
As ecommerce sales continue to rise, problems with payment systems become ever more costly. A fraud rule that is too stringent will reduce the revenue that a site receives, while one that is too permissive will lead to increased chargebacks and lost sales. As ecommerce sites grow in size, it becomes more important to track fraud after the sale has occurred.
Choose the Right Payment Methods for Your Store
Cards remain central to online checkout, but they do not have to handle every transaction. The strongest payment mix depends on the product, ticket size, customer relationship and fulfillment timeline.
| Payment Method | Best Fit | Main Advantage | Main Tradeoff |
| Credit and debit cards | Consumer checkout and immediate purchases | Familiar and fast | Percentage-based costs and chargeback exposure |
| Digital wallets | Mobile buyers and faster checkout | Reduces manual card entry | Availability depends on gateway and device |
| ACH or eCheck | High-ticket, recurring or B2B transactions | Useful alternative to card fees | Authorization, returns and settlement require controls |
| Payment links | Remote sales, support-assisted orders and invoices | Easy to send without building a full checkout | Must connect clearly to the order record |
| Recurring billing | Memberships and subscriptions | Automates repeat collection | Needs clear consent and cancellation workflows |
| Buy now, pay later | Eligible higher-value consumer purchases | Can reduce immediate customer cost | Provider approval, fees and disputes vary |
| Multi-currency payments | International ecommerce | Lets customers pay in familiar currencies | Adds conversion and reconciliation costs |
A high-ticket store may accept cards for deposits and ACH for final balances. A subscription merchant may prioritize card updater tools and recurring tokens, while a regulated retailer may need age verification and category-specific underwriting before enabling checkout.
Reduce Ecommerce Fraud Without Hurting Conversions
Several signals can be combined to make a determination of whether a transaction is fraudulent. These can include:
- Address information (billing and shipping)
- CVV results
- Device information
- IP location
- Velocity
- Customer history
- Email age and pattern
- Order value
- Product risk
- Freight forwarder addresses
- Dispute history
- Authentication results
Rather than applying friction to all transactions, setting thresholds to approve some transactions and applying friction to others allows merchants to balance the fight against fraud with the ability to take place sales.
NMI’s gateway provides tokenization, support for recurring billing, having multiple merchant IDs within one account, fraud protection, and connection with over 200 payment processors and shopping carts. Authorize.net offers hosted and API-based payments for ecommerce websites, support for recurring billing, eCheck payments, stored customer profiles, and its Advanced Fraud Detection Suite. Availability of functions varies by processor, merchant account, and configuration.
Secure Your Ecommerce Payment Page
The Payment Card Industry Data Security Standard (PCI DSS) establishes baseline requirements for entities that store, process, or transmit payment account data. Outsourcing the checkout function does reduce the amount of payment data that a merchant must handle. However, it does not remove any of the PCI DSS requirements.
PCI DSS v4.x Requirements 6.4.3 and 11.6.1 cover ecommerce payment pages. The PCI Security Standards Council (PCI SSC) created these requirements in response to e-skimming attacks on ecommerce websites that targeted scripts running within customers’ browsers.
For high-risk ecommerce stores, it is essential to review the following:
- Who has the power to modify the code for the payment page
- What third-party scripts run on the payment page
- Are the scripts authorized for the website to use
- How to detect changes to scripts on the website
- How to manage administrative access and multifactor authentication
- How to manage updates to ecommerce plugins and ecommerce platforms
- How to configure the hosted checkout function
- What services the website uses to process payments
- How to respond to payment website incidents
Even with a PCI DSS compliance program in place, there is no guarantee that ecommerce websites will not experience fraud, data theft, or chargebacks.
Understanding Visa VAMP for Ecommerce Businesses
The Visa Acquirer Monitoring Program (VAMP) framework compares the number of fraud and non-fraud disputes that appear on merchants’ Visa accounts with the total number of settled Visa transactions.
Visa considers the number of fraud reports on merchants’ Visa accounts to be the TC40 ratio. The number of Visa disputes on merchants’ Visa accounts is referred to as the TC15 ratio. These are measured monthly, along with the enumeration of Visa cards.
For merchants located within the United States, Canada, the European Union, and the Asia-Pacific regions, the threshold for excessive merchants under VAMP is a ratio of at least 150 basis points (.15 or 1.5%) within their Visa accounts, which requires at least 1,500 reports of fraud and disputes on merchants’ Visa accounts every month. This threshold became effective starting April 1, 2026, within these regions.
While most small and midsize merchants will not approach the threshold of 1.5% and 1,500 reports of fraud and Visa disputes, some merchants may still have high rates of chargebacks that can negatively impact the merchant’s reserve, funding of their transactions, and even their Visa account.
The Visa Account Attack Intelligence (VAAI) system monitors merchants’ Visa accounts for potential enumeration attacks. Merchants should also implement controls at the payment gateway to limit enumeration attacks by bots and high transaction-attempt velocities.
Compare Ecommerce Payment Processors & Gateways
The best provider depends on the merchant’s industry, software, processing history and desired level of control.
| Option | Best Fit | Main Strength | Main Tradeoff |
| Payment Nerds | Eligible high-risk stores needing underwriting and gateway guidance | Connects account fit with fraud, chargeback and integration needs | More documentation than self-service onboarding |
| NMI with a compatible merchant account | Stores needing processor choice, multiple MIDs or integration flexibility | Broad processor and shopping-cart compatibility | Requires correct acquiring and technical setup |
| Authorize.net with a compatible merchant account | Merchants wanting a familiar gateway and recurring tools | Ecommerce, eCheck, virtual terminal, tokenization and fraud controls | Gateway access does not guarantee high-risk approval |
| Stripe | Supported ecommerce and software businesses wanting an integrated platform | Checkout, APIs, wallets and fraud tools in one ecosystem | Restricted models may require review or another provider |
| Offshore or global acquiring | Merchants with genuine international or domestic-placement needs | May add regional acquiring or currency options | Higher complexity, reserves and cross-border costs |
Payment Nerds may be a practical option for eligible merchants that need ecommerce payment processing aligned with their product category, expected volume, gateway and account-stability needs. Approval, pricing and reserve terms remain subject to underwriting.
Prepare for High-Risk Ecommerce Underwriting
The application will help the underwriter to understand what is being sold, when it is delivered, and what could lead to a dispute with the customers.
The ecommerce business will likely have to provide the following information:
- Business formation documents
- Owner identification
- Bank statements
- Processing statements
- Projected monthly volume
- Average and maximum ticket size
- Chargeback and refund history
- Website and checkout access
- Product descriptions
- Supplier information
- Fulfillment timelines
- Tracking and delivery records
- Terms and conditions
- Refund and cancellation policies
- Subscription information
- Required licenses
- Affiliate information
The website should match the information provided in the application. For instance, if the owner is applying for the ecommerce business but the website includes products that are regulated or require a subscription to access, that could be problematic for the underwriter.
Finally, merchants should disclose if they have previously experienced a closure of their ecommerce business with the current processor. By closing the ecommerce business with a documented problem with the processor up front, the processor can more effectively work around the issue than after the fact should they be accepted into the processor’s network.
Understanding Ecommerce Payment Processing Costs
The advertised transaction rate is only one cost. Additional costs may include:
- interchange
- network fees
- processor markup
- gateway fees
- monthly account charges
- fraud-screening fees
- chargeback fees
- PCI-related fees
- cross-border fees
- currency conversion
- token-vault or updater fees
- ecommerce-platform fees
- integration costs
- reserves
While not a transaction fee, reserves can impact a merchant’s cash flow. The processor of a merchant will hold a percentage of sales within a defined period for reasons such as chargebacks and fraud returns.
A low transaction rate does not mean that a company will offer a low total cost to the merchant if that payment processor does not support the type of ecommerce business the merchant has or intends to start.
Common Ecommerce Payment Processing Mistakes to Avoid
One mistake is choosing an ecommerce payment processor before determining whether the ecommerce company offers the product category the payment processor supports. Even if the integration is smooth, the ecommerce business could be shut down when it is discovered that the payment processor does not support the ecommerce business model.
Other mistakes to avoid include:
- confusing gateway access with approval of merchant accounts
- underestimating the volume of ecommerce transactions that will occur
- hiding subscription ecommerce businesses
- using vague terms to describe ecommerce billing
- failing to monitor ecommerce fraud according to product categories
- approving repeated attempts to test payment cards
- storing ecommerce payment information outside of approved systems
- launching ecommerce into new countries without reviewing the rules regarding ecommerce fraud in those countries
- using unclear ecommerce cancellation policies
- allowing ecommerce plugins to be outdated
- ignoring ecommerce payment page scripts
- waiting for customers to send chargebacks before investigating fraud issues
The ecommerce payment system should be reviewed anytime an ecommerce business adds new products, subscriptions, ecommerce markets, ecommerce fulfillment models, or significant sources of ecommerce traffic.
Essential Features of High-Risk Ecommerce Payment Solutions
Processor and Gateway Compatibility
The gateway must connect to a bank that will accept the type of business that is to be established. The merchant should ensure that the processor, payment gateway and ecommerce platform are all compatible with one another before committing to a long-term agreement with the processing companies or prior to website development begins.
Tokenization and Secure Card Storage
Tokenization allows for the payment methods of returning customers to be stored without the ecommerce platform having to use the credit and debit card numbers itself. Because of this, the merchant must ensure that the token can be used across various payment gateways and processors. Should the merchant discover that it cannot transfer the stored payment method credentials, its customers may be disappointed if the merchant should change payment gateways.
Recurring Billing and Account Updater
As a store that sells products that must be purchased on a recurring basis, the ecommerce platform should be able to automatically charge customers for the products they have purchased, send renewal notices, allow for cancellations and support stored credentials and automatic account updating for expired cards.
Product and Channel Reporting
The merchant will want to be able to separately view all of the approvals, fraud numbers, returned products and disputes for each of its products, channels and payment methods. Otherwise, it will be difficult to determine which individual products are creating the most risk for the merchant.
Order and Fulfillment Integration
The ecommerce platform should be able to link the transaction made through the payment gateway with the order that was fulfilled by the ecommerce store, the customer communications and any refund orders. This will allow for the best possible defense should a dispute should arise.
Scalable Volume and Ticket Limits
The merchant’s bank should be approved for the number of orders that the ecommerce site is likely to receive each month, as well as the number of tickets (transactions) that will pass through the merchant account each month. Even if the ecommerce site is successful in launching, the merchant account may be reviewed by its bank if the ecommerce site attempts to process orders beyond those approved during underwriting.
FAQs
Q: What are ecommerce payment solutions?
A: Ecommerce payment solutions are the different types of accounts, gateways, and software that merchants can use to accept payments online. These can include credit and debit card solutions, e-wallets, ACH payments, and more.
Q: What is ecommerce payment processing?
A: Ecommerce payment processing involves the routing of the transaction from the merchant’s website through the gateway to the processor, the card network, and the merchant’s bank to clear and settle the transaction.
Q: What does an ecommerce payment processor do?
A: An ecommerce payment processor connects the merchant with their acquiring bank to authorize and process payments. In addition, many offer additional services to ecommerce merchants.
Q: Why are ecommerce businesses high risk?
A: Ecommerce is considered high risk because most transactions are card-not-present transactions, meaning there is a risk of fraud, international orders, and recurring orders for the same products.
Q: Do high-risk ecommerce merchants need a special gateway?
A: High-risk ecommerce merchants will need to use a gateway that connects to an acquiring bank that will accept their high-risk business. Authorize.net and NMI may be two of the gateways that can be accessed by a high-risk account.
Q: How can ecommerce stores reduce chargebacks?
A: By using payment descriptors that are easily recognized by customers, providing policies, and offering order and shipping tracking information. By using authentication solutions to prevent fraudulent transactions and alerts for potential chargebacks.
Q: What is card testing?
A: Card testing is the use of automated systems to test whether stolen and generated credit card numbers are valid. Stores can reduce card testing by using anti-bot software and systems to identify fraudulent purchases.
Q: Can high-risk ecommerce stores accept ACH payments?
A: ACH payments may be helpful for merchants that take high-ticket orders, engage in B2B sales, or require recurring payments from customers. However, ACH payments still require the same authorization and return processes as other payments.
Q: How long does ecommerce high-risk approval take?
A: There is no specific time frame for high-risk ecommerce approval. Depending on the business and the documentation submitted, approval times can vary. However, approval should never be presented as guaranteed or without documentation.
Build an Ecommerce Payment Stack That Can Scale
The best ecommerce stores connect account underwriting with every stage of the transaction – from checkout through to dispute reporting. High-risk merchants need to ensure that the ecommerce payment processor supports the business before sales begin to grow.
Sources
- U.S. Census Bureau. “Quarterly Retail E-Commerce Sales.” Accessed July 2026.
- Visa. “Visa Acquirer Monitoring Program Overview.” Accessed July 2026.
- Visa. “How Authentication Protects Digital Payments.” Accessed July 2026.
- PCI Security Standards Council. “Payment Page Security and Preventing E-Skimming.” Accessed July 2026.
- PCI Security Standards Council. “PCI Security Standards Overview.” Accessed July 2026.
- NMI. “Payment Gateway.” Accessed July 2026.
- Authorize.net. “Payment Processing Solutions for Every Way You Do Business.” Accessed July 2026.
