Payment processing integrations for high-risk merchant accounts
A payment processing integration connects the software you already run — accounting, CRM, eCommerce, EMR, ERP, gateway, or POS — to a dedicated high-risk merchant account that holds and settles your funds. Keep the tools you already use: we place a dedicated MID through 70+ banking relationships and connect it to your existing platform through a supported gateway. $0 setup, approvals as fast as 24–48 hours.
Integrations directory
Search or filter by category to find your accounting, CRM, cart, EMR, ERP, gateway, or POS. Every integration connects to a dedicated MID underwritten for your high-risk industry.
Showing 149 of 149 integrations.
How integrations work with a high-risk merchant account
A payment processing integration is simply the connection between the software you already use to run your business — your eCommerce cart, CRM, accounting suite, EMR, ERP, or POS — and the merchant account that actually holds and settles your money. For high-risk merchants, that distinction matters. Mainstream payment aggregators bundle the gateway and the bank into one shared account, which is exactly why they freeze and terminate high-risk businesses without warning. Gray Merchants separates the two: we place a dedicated MID through one of our 70+ banking and acquirer relationships, then connect it to your existing platform through a supported gateway. Your funds settle to an account underwritten specifically for your industry, so you are not sharing risk with thousands of unrelated merchants.
Because Gray Merchants supports 50+ high-risk industries across 16K+ merchants, the integration step is rarely the hard part — the underwriting is. Once your dedicated MID is approved (typically within 24 to 48 hours, with $0 setup fee), connecting it to your cart, CRM, or POS is usually a configuration task, not a rebuild.
Connecting your cart, CRM, accounting, and back office
Most platforms connect the same way: your storefront, CRM, or practice-management system talks to a payment gateway, and the gateway is configured to route transactions to your dedicated MID. On the eCommerce side, Shopify, WooCommerce, BigCommerce, Magento, and the rest of the carts in the directory above connect through gateways such as NMI, Authorize.net, Fluid Pay, or USAePay. You keep your product catalog, theme, and checkout flow — only the settlement destination changes. See our eCommerce payment processing and payment gateways pages for the full connection detail.
For accounting, CRM, EMR, and ERP, tools like QuickBooks, Xero, Salesforce, HubSpot, NetSuite, and the healthcare and field-service suites in the directory collect payments against invoices, deals, and patient balances — by card or by ACH processing for bank-to-bank invoice payments — while the money settles to your high-risk account. Your books, pipeline, charts, and reporting stay exactly where they are. Continuity and subscription programs handle billing cycles, dunning, and retries, and they can load-balance across multiple MIDs — see recurring billing to protect volume and lift approval rates on recurring offers.
In-person sales are covered too. POS platforms such as Clover, Lightspeed, and Verifone run your card-present terminals while your card-not-present volume flows through the same dedicated merchant account, giving you a single, consolidated view of revenue across your POS systems.
API and webhooks
If you run a custom checkout or an internal platform, you are not limited to off-the-shelf plugins. Every gateway we support exposes a REST API for authorizations, captures, refunds, and tokenized customer profiles, plus webhooks that push real-time events — successful sales, declines, refunds, and chargebacks — back to your systems. That lets you trigger fulfillment, update subscription status, or sync your ledger automatically. Tokenization means you store a reference token instead of raw card data, which keeps you inside a lighter PCI scope while still supporting recurring billing and one-click reorders.
Chargeback defense is built into the stack rather than bolted on. Pre-dispute alerts integrate at the account level, so disputes can be resolved or refunded before they harden into formal chargebacks — protecting both your revenue and the dispute ratios that keep your MID healthy.
Do I keep my existing platform?
Yes. This is the question we hear most, and the answer is almost always the same: you keep the tools you already use. Switching to Gray Merchants does not mean rebuilding your store, migrating off your ERP, or abandoning QuickBooks. We change where your money settles — placing a stable, dedicated MID behind your existing checkout — not how you run your business day to day.
If you are currently on an aggregator and worried about a freeze, or you have already been shut down, the fastest path back to processing is usually a dedicated MID connected to the platform you already own. Explore high-risk merchant accounts, payment gateways, eCommerce payment processing, and POS systems, or talk to a specialist about connecting your account.
Bundled aggregator vs. dedicated MID behind your existing stack
Aggregators bundle the gateway and the bank into one shared account, which is why they freeze high-risk businesses without warning. A dedicated MID separates the two.
| Feature | Standard aggregator | Gray Merchants dedicated MID |
|---|---|---|
| Gateway and bank relationship | Bundled into one shared account | Separated — dedicated MID behind your gateway |
| Platform migration required | Often forces a checkout rebuild | Keep your existing cart, CRM, or POS |
| Risk pooling | Shared with thousands of unrelated merchants | Underwritten specifically for your industry |
| Freeze exposure from unrelated accounts | Yes — one bad actor can trigger reviews | No — your MID is dedicated to your business |
| Setup | Varies by platform | 24-48 hour approval, $0 setup fee |
Integrations FAQ
Do I keep my existing platform when I switch to Gray Merchants?
Yes. In almost every case you keep the same store, CRM, accounting, EMR, ERP, or POS system you already run. We place a dedicated MID with one of our 70+ banking and acquirer relationships and connect it to your existing platform through a supported gateway. You are not forced to rebuild your store or migrate tools.
How do integrations work with a high-risk merchant account?
A high-risk merchant account is the bank relationship that actually holds and settles your funds. Your cart, CRM, accounting tool, or POS talks to a payment gateway, and the gateway is configured to route transactions to your dedicated MID. Gray Merchants underwrites the account, places the MID, and helps connect the gateway so approved industries can process without the shutdown risk of aggregators.
Which payment gateways do you support?
We work with NMI, Authorize.net, Fluid Pay, USAePay, Cybersource, BlueSnap, and other major gateways. Because most carts, subscription billers, EMR/ERP suites, and CRMs already support these gateways, connecting your dedicated MID is usually a configuration step rather than custom development.
My software is not in the directory — can you still connect it?
Usually, yes. The directory lists the platforms merchants ask about most, but any system that supports a standard gateway (or exposes an API and webhooks) can settle to your dedicated MID. Tell us what you run and a specialist will confirm the connection path before you apply.
Do you support subscriptions and recurring billing?
Yes. We support recurring and continuity billing, including multi-MID load balancing across several acquiring banks to protect volume and improve approval rates. See recurring billing for how the routing and retries work.
How long does it take to get approved and connected?
Approvals typically come back within 24 to 48 hours, with $0 setup fee. Once approved, connecting your existing cart, CRM, or POS through a supported gateway is usually quick because the integrations already exist.