What Are Delta-8, Delta-9, THCA, and HHC?
Quick answer: Delta-8, delta-9, THCA, and HHC are hemp-derived cannabinoids that exist in a legal gray zone. They are technically legal under the 2018 Farm Bill when the final product contains less than 0.3% delta-9 THC by dry weight, but banks and payment processors treat them as high-risk — often higher risk than standard CBD. If you sell any of these products, you need a dedicated high-risk merchant account to accept credit cards reliably.
These four cannabinoids share a common origin — the hemp plant — but differ in chemical structure, psychoactive effects, and the level of scrutiny they attract from financial institutions:
- Delta-8 THC is an isomer of delta-9 with milder psychoactive effects. It is synthesized from CBD through chemical conversion, which raises additional regulatory questions about whether the final product qualifies as "naturally derived."
- Delta-9 THC is the primary psychoactive compound in cannabis. Hemp-derived delta-9 products are legal at the federal level when THC concentration stays below 0.3% by dry weight — a threshold that larger-format edibles (like gummies) can meet while still delivering noticeable effects.
- THCA (tetrahydrocannabinolic acid) is the raw, non-psychoactive precursor to THC. It converts to delta-9 THC when heated (decarboxylation). This makes THCA flower and concentrates functionally equivalent to traditional cannabis once consumed, despite testing as compliant in raw form. Banks are aware of this, and THCA attracts the highest underwriting scrutiny of any hemp-derived product.
- HHC (hexahydrocannabinol) is a hydrogenated form of THC. It produces psychoactive effects similar to delta-8. Because HHC is relatively newer to the market, regulatory frameworks and banking policies are still catching up.
All four fall outside the comfort zone of standard CBD payment processing. CBD isolate and broad-spectrum CBD products — which are non-psychoactive — have become easier to process over the past few years. Delta-8, delta-9, THCA, and HHC have not followed the same trajectory.
Why Mainstream Processors Won't Touch Cannabinoid Products
Stripe, Square, PayPal, and Shopify Payments all restrict or outright ban hemp-derived cannabinoids beyond basic CBD. The reasons come down to compliance cost, chargeback exposure, and regulatory uncertainty.
Aggregator processors don't underwrite individual merchants for high-risk categories. When you process through Stripe or Square, you are processing under their master merchant account. If your product category triggers their risk filters — or if a single chargeback spikes your ratio — they terminate your account with little warning or recourse. This is not a bug; it is how aggregator models work.
Specific reasons these platforms reject cannabinoid merchants:
- Psychoactive products violate acceptable use policies, even when federally legal
- State-by-state legality varies, creating compliance liability the platform does not want to manage
- Chargeback rates in cannabinoid verticals run higher than standard ecommerce due to product expectations, shipping delays, and billing descriptor confusion
- Reputational risk — card brands (Visa, Mastercard) monitor merchant categories, and processors avoid sectors that could trigger network-level review
The result is predictable: merchants launch on Shopify Payments or Stripe, process for a few weeks or months, then get shut down. Funds may be held for 90-180 days. If you are selling delta-8, delta-9, THCA, or HHC, a dedicated cannabis payment solution built for your specific product type is the only stable path.
The Legal Landscape: State Restrictions and Federal Ambiguity
Federal legality under the 2018 Farm Bill does not mean universal legality. Several states have banned or restricted specific cannabinoids, and the patchwork creates real compliance and processing challenges.
States that have banned or heavily restricted delta-8 THC include Alaska, Colorado, Delaware, Idaho, Iowa, Mississippi, Montana, New York, North Dakota, Oregon, Rhode Island, Utah, Vermont, and Washington — though this list shifts as legislatures act. Some states ban delta-8 specifically while allowing other cannabinoids; others have introduced blanket restrictions on all psychoactive hemp derivatives.
THCA faces a different legal question. Because raw THCA is non-psychoactive and technically compliant at the 0.3% delta-9 threshold, it occupies what many in the industry call a legal loophole. Banks and underwriters are increasingly aware that THCA flower is functionally cannabis, and several states are moving to close this gap. Merchants selling THCA products should expect the most rigorous underwriting review and the highest processing rates in the hemp-derived category.
What this means for processing: Your acquiring bank needs to verify that you are not shipping restricted products into states where they are illegal. This is a compliance obligation that falls on the merchant, not the processor. Age verification, geo-blocking restricted states, and maintaining current state-by-state compliance records are table stakes.
For a broader view of CBD and hemp compliance, see our CBD payment processing 2026 guide.
What Banks Look For When Underwriting Cannabinoid Merchants
Banks that work with delta-8, delta-9, THCA, and HHC merchants have specific underwriting criteria that go beyond what a standard CBD merchant account requires.
Documentation and compliance
- Certificates of Analysis (COAs) for every product, from an accredited third-party lab, confirming THC content is below 0.3%
- Business license and state-specific hemp or cannabinoid permits where applicable
- Product catalog with clear labeling — no medical or therapeutic claims
- Age verification system in place (required in most states, expected by all acquiring banks)
- Shipping and fulfillment policy that addresses restricted-state blocking
- Refund and return policy — clear, visible, and reasonable
Risk signals banks evaluate
- Processing history — previous chargebacks, account terminations, and monthly volume
- Website compliance — no health claims, visible disclaimers, COA accessibility, clear product descriptions
- Product type — CBD-only is lowest risk; delta-8 and HHC are moderate; delta-9 and THCA are highest
- Chargeback ratio — banks want to see a plan for keeping disputes below 1%
- State compliance — evidence that you block orders from restricted states
Banks willing to underwrite cannabinoid merchants exist, but they charge accordingly. The underwriting process typically takes 7-14 business days for delta-8/HHC and 14-21 business days for THCA/delta-9, reflecting the additional due diligence required.
Processing Rates and Terms: What to Expect
Cannabinoid payment processing costs more than standard ecommerce or even traditional CBD. The rates reflect the risk banks assume and the compliance overhead processors absorb.
| Product category | Typical processing rate | Per-transaction fee | Rolling reserve |
|---|---|---|---|
| CBD (isolate/broad-spectrum) | 3.0%–4.5% | $0.20–$0.30 | 0%–5% |
| Delta-8 / HHC | 3.5%–5.0% | $0.25–$0.35 | 5%–10% |
| Delta-9 (hemp-derived) | 4.0%–5.5% | $0.25–$0.35 | 5%–10% |
| THCA | 4.5%–5.5% | $0.30–$0.40 | 10%–15% |
Rolling reserves are the most commonly misunderstood term. The processor holds a percentage of each transaction (typically for 6 months) as a buffer against chargebacks and refunds. A 10% rolling reserve on $50,000/month in sales means $5,000/month is held — real cash flow impact. Negotiate reserve terms upfront and ask for a reduction schedule based on processing history.
Other fees to expect: monthly account fees ($25-$50), PCI compliance fees ($10-$15/month), chargeback fees ($25-$35 per dispute), and potentially a setup or application fee ($0-$500 depending on the processor).
Merchants processing above $25,000/month typically have leverage to negotiate lower rates and reduced reserves. Volume is the strongest bargaining tool in high-risk processing.
For comparison with standard CBD rates, see our best CBD payment processors breakdown.
How to Get Approved for a Cannabinoid Merchant Account
Approval is not automatic, but it is repeatable if you present a clean, compliant application. Here is what separates merchants who get approved quickly from those who get declined or delayed.
1. Get your COAs in order. Every product needs a current, third-party lab report showing compliant THC levels. Outdated or missing COAs are the most common reason for application delays. 2. Clean up your website. Remove any health claims, medical language, or imagery that implies therapeutic use. Add visible disclaimers, a clear refund policy, terms of service, and a privacy policy. Make your COAs accessible (link from product pages or a dedicated lab results page). 3. Implement age verification. Use a third-party age gate or verification service. A simple checkbox is not sufficient for most underwriters — they want to see actual age verification, especially for THCA and delta-9. 4. Prepare your processing history. If you have previous statements from other processors, bring them. Clean history with low chargebacks accelerates approval. If you have been terminated, be upfront about why — banks will find out during the MATCH list check anyway. 5. Block restricted states. Configure your ecommerce platform to prevent orders from states where your specific products are illegal. Document this in your application. 6. Apply through a specialist. Working with a processor experienced in cannabinoid underwriting — like Unison Payment Solutions — means your application is packaged correctly and submitted to banks that actually approve this category. General-purpose ISOs often waste weeks submitting to banks that will never say yes.
Platform Integration: Shopify, WooCommerce, and Beyond
Most cannabinoid merchants sell through Shopify or WooCommerce. The good news: dedicated high-risk processors integrate with both platforms. The bad news: you cannot use the platform's native payment solution.
Shopify: You will use a third-party payment gateway (not Shopify Payments) connected to your high-risk merchant account. Authorize.Net and NMI are common gateways that integrate cleanly with Shopify. You will pay Shopify's third-party transaction fee (0.5%-2% depending on your Shopify plan) on top of your processing rate — factor this into your margins.
WooCommerce: WooCommerce offers more gateway flexibility since it is open-source. NMI, Authorize.Net, and USAePay all have WooCommerce plugins. There is no additional platform transaction fee beyond your processing costs.
Custom or headless builds: If you are using a headless storefront or custom checkout, most high-risk gateways offer direct API integration. This gives you the most control over the checkout experience and eliminates platform-level fees.
Regardless of platform, invest in chargeback protection. Alerts from Ethoca and Verifi CDRN can resolve disputes before they become chargebacks — which is critical when your acquiring bank is watching your ratio closely.
For merchants also selling vape hardware or accessories, see our vape merchant account guide for additional underwriting considerations.
The Bottom Line
Delta-8, delta-9, THCA, and HHC are real businesses with real revenue — but they require payment infrastructure built for the category. Mainstream processors will shut you down. State compliance is your responsibility. Banks that approve cannabinoid merchants exist, but they underwrite carefully and charge accordingly.
The merchants who succeed long-term are the ones who treat compliance as a competitive advantage, not an obstacle. Current COAs, age verification, restricted-state blocking, and clean processing history are the difference between a stable merchant account and a cycle of shutdowns and fund holds.
If you are selling hemp-derived cannabinoids and need reliable payment processing, contact Unison Payment Solutions for a consultation. We underwrite delta-8, delta-9, THCA, and HHC merchants through acquiring banks experienced in this category, with approval timelines of 7-21 business days depending on product type and compliance readiness.