Payments12 min readUpdated October 14, 2026

Fiat-to-Crypto Payment Gateways: How They Work and What the Rules Say

What a fiat-to-crypto payment gateway does, how it differs from crypto checkout and stablecoin settlement, and the Visa, Stripe, MiCA and FinCEN rules.

Nick Bonnassies, CMO at Tagada · checked against 11 sources

Article summary

TL;DR

A fiat-to-crypto payment gateway, or on-ramp, lets a customer pay with a card or bank transfer and receive crypto. Visa calls the provider a Ramp Provider: crypto purchases run on MCC 6051 or 6012 with Special Condition Code 7, a registered high-risk category. It is a different product from a crypto checkout, where the customer pays in crypto.

Three products share the name: on-ramps (card in, crypto out), crypto checkouts (crypto in, fiat or stablecoins out) and stablecoin settlement between businesses.
Visa puts crypto exchanges, wallets and on-ramps on MCC 6051 or 6012 with Special Condition Code 7, in Tier 2 of its Integrity Risk Program.
Routing a sale through a ramp provider doesn't change its MCC: when a cardholder pays for goods, Visa wants the MCC of the business that sells them.
In the EU, a crypto-asset service provider needs a MiCA authorization; the transition period ended on July 1, 2026 at the latest. In the US, FinCEN treats crypto payment processors as money transmitters.
The card leg can still be disputed. Stripe, for example, says it takes on fraud and dispute liability on its own on-ramp.

Want to go further? Ask

On this page

"Fiat to crypto payment gateway" covers three different products, and the card networks treat them very differently. This guide separates them, then walks through what Visa, Stripe, EU and US regulators actually require, and the questions to ask a provider before you sign.

What is a fiat-to-crypto payment gateway?

A fiat-to-crypto payment gateway takes a payment in ordinary money and delivers crypto in exchange. The customer pays by card, Apple Pay or bank transfer; the provider checks who they are, prices the coins and sends them to a wallet. The industry calls it an on-ramp. The reverse, crypto in and fiat out, is an off-ramp.

Visa has its own word for the provider.

An entity is a Ramp Provider if it provides payment services to convert transactions from a fiat currency to a non-fiat currency (for example: cryptocurrency), or vice versa.

Visa, Merchant Data Standards Manual, April 2026, p. 5

A Ramp Provider can sell crypto to cardholders directly, or work for "Conversion Affiliates": wallets, apps and marketplaces that embed its widget.1 That second model is what most "fiat to crypto payment processor" pages sell.

Fig. 1An on-ramp purchase

approved declined or closed routing step

CustomerPays by card or bank transfer
paysRamp providerKYC, sanctions screening, price quote
authorizes onCard networkMCC 6051 or 6012, condition code 7
sends toCrypto walletCoins delivered on-chainApproved

the card leg is a normal card payment

Simplified flow. Based on Visa's Ramp Provider definition and Stripe's onramp documentation.

Fiat-to-crypto gateway, crypto payment gateway, stablecoin settlement

Search results mix three products. The difference is which way the money moves, and it decides which rules apply.

	Fiat-to-crypto gateway (on-ramp)	Crypto payment gateway	Stablecoin settlement
Customer pays with	Card or bank transfer	Crypto from a wallet	Stablecoins (often business to business)
Who receives what	Customer receives crypto	Store receives fiat or stablecoins	Business receives fiat or stablecoins
What is being sold	Crypto itself	Your goods or services	Goods, services or a transfer
Card network MCC	6051 or 6012, condition code 7	NoCard leg	NoCard leg
Examples (from their own pages)	Stripe onramp, MoonPay	BitPay, Stripe stablecoin payments	Coinbase Payment Acceptance

Verdict

If your customer ends up holding crypto, you are looking at an on-ramp and the card rules on crypto apply. If your customer pays you in crypto for a product, it's a crypto payment gateway: no card in the flow, so none of the crypto MCC rules, but also none of the card protections.

For an online store selling physical goods, the second column is usually the relevant one: an extra payment method next to cards, like other alternative payment methods. The first column is for businesses that sell crypto.

How Visa classifies a fiat to crypto payment processor

Visa's April 2026 MCC manual sets three rules for anyone selling crypto against a card.1

Crypto purchases are quasi-cash
Buying crypto must run on MCC 6051 (non-financial institutions) or MCC 6012 (financial institutions), with special condition indicator 7 and the quasi-cash indicator in the authorization, even if selling crypto isn't the merchant's main business.
Any non-fiat acquisition is flagged
Acquisitions of non-fiat currency must use MCC 4829, 6012, 6051 or 6540 as applicable, with the special condition indicator in both the authorization and the clearing record.
The ramp provider assesses each affiliate
A Ramp Provider is a third party. It must evaluate the business of every Conversion Affiliate and assign the MCC that fits that business.

Visa's examples make it concrete. A cardholder who buys Bitcoin from a ramp provider and sends it to their own wallet: MCC 6051, because the provider isn't a financial institution. A bank selling a tokenized bond to its cardholder: MCC 6012.1

Tier 2 of the Integrity Risk Program

On top of the coding, Visa lists "6051 and 6012 Crypto Merchants: exchanges, wallet providers or on-ramp providers (card absent)" among its high-risk merchants.1 In the Visa Integrity Risk Program, crypto sits in Tier 2, the "risk of financial harm" tier, alongside cyberlockers and skill games with wagering.2

The acquirer gets a Tier 2 approval from Visa. One approval covers all Tier 2 categories, with an initial control assessment and a yearly self-assessment.
The acquirer runs enhanced due diligence on the merchant. It checks the business, its controls and its licenses.
The acquirer registers the merchant with Visa. Registration comes before the first card-absent transaction.

Source: Visa Integrity Risk Program guide for acquirers. The full list of codes and tiers is in our guide to high-risk MCC codes.

Not every acquirer holds that approval, so an on-ramp has fewer banks to choose from. More on how tiers work in high-risk MCC codes.

Why crypto rails don't change your MCC

The old pitch for "fiat-to-crypto routing" in ecommerce was that it moves a hard-to-process sale onto crypto rails and away from your category. Visa's manual closes that door explicitly.

If the cardholder is paying a Ramp Provider's Affiliate for goods/services, the MCC should be the MCC appropriate for the type of item purchased or the Affiliate's primary business as per Visa's regular MCC assignment rules, when permitted. Also, if the transaction is on behalf of another High-Risk Merchant, then the MCC of that merchant must be used.

Visa, Merchant Data Standards Manual, April 2026, p. 20

Visa's own example: a cardholder buys Ethereum through a ramp provider in order to gamble with an affiliate. The transaction must carry MCC 7995, gambling, not 6051.1 The card payment is coded for what the customer is really buying.

Changing the data to get through is a rule breach

Visa's Core Rules forbid changing authorization data, including the MCC, when a payment is retried after a decline. Changing a merchant's name, data or performance to get around Visa's monitoring programs can cost the acquirer up to USD 25,000 per merchant per month, and the merchant and its owners can be excluded.3

So for a store with approval problems, a crypto layer doesn't replace a correct MCC and a processor that accepts the business. That part is covered in high-risk ecommerce payment resilience.

What Stripe allows for crypto businesses

Processors add their own rules on top of Visa's. Here is what Stripe's list said for crypto-related businesses on October 14, 2026.4

Business	At Stripe
Crypto exchanges and crypto wallets	RestrictedNeeds approval
Cryptocurrency (other uses)	RestrictedLimited: contact Stripe's sales team
Money transmission and other money services	RestrictedNeeds approval
Crypto mining and crypto deposits	Prohibited
Initial coin offerings (ICOs)	Prohibited
Peer-to-peer money transmission	Prohibited

Stripe also runs its own crypto products, described below. Using them is a separate application from getting your crypto business accepted on a standard Stripe account.

Regulation: MiCA in the EU, FinCEN in the US

Whoever converts fiat into crypto is regulated as a financial service. The two texts below are the primary sources most providers cite.

EU: Regulation (EU) 2023/1114 (MiCA)

MiCA lists "exchange of crypto-assets for funds" and "exchange of crypto-assets for other crypto-assets" among crypto-asset services. Under Article 59, no one may provide those services in the EU unless authorized as a crypto-asset service provider (CASP), or already licensed as a bank, e-money institution, investment firm or similar entity allowed to offer them.7

Fig. 2MiCA dates for crypto service providers

June 30, 2024Rules on stablecoin issuers (Titles III and IV) apply
Dec 30, 2024MiCA applies in full, including to service providers
July 1, 2026Latest end of the transitional period for providers already active under national law

the grace period is over

Source: Regulation (EU) 2023/1114, Articles 143 and 149. Member states could shorten the transitional period.

MiCA also sets who may offer a euro or dollar stablecoin to the public. It calls them e-money tokens, crypto-assets that "purport to maintain a stable value by referencing the value of one official currency", and only an authorized credit institution or e-money institution may issue them.7

US: FinCEN guidance FIN-2019-G001

FinCEN's May 2019 guidance applies the money transmitter rules to crypto business models.8

Exchangers are money transmitters. A business that exchanges virtual currency for real currency, funds or other virtual currency generally is one, with the money services business obligations that come with it.
Crypto payment processors are money transmitters too. FinCEN says they don't qualify for the payment processor exemption, because they don't settle only through systems limited to BSA-regulated financial institutions.
Users are not. A person who obtains virtual currency to buy goods or services on their own behalf isn't a money transmitter.

Licensing doesn't stop at FinCEN: MoonPay, for example, lists money transmitter licenses in 47 US states and a New York BitLicense on its business page.9 See the glossary entries on FinCEN and the money transmitter license.

What this means for a store

A merchant that accepts crypto for its goods through a licensed processor is in the "user" position in FinCEN's framework. A merchant that starts selling crypto to its customers, or holding and transferring it for them, is in a different one. Ask a lawyer before you cross that line.

Stablecoin-to-fiat payments for businesses

The third product is the one corporate treasurers search for: getting paid in a stablecoin and receiving fiat currency. Here is what three providers say on their own pages, read on October 14, 2026.

What the providers state

Stripe stablecoin payments: customers pay in USDC (on Tempo, Ethereum, Solana, Polygon and Base) and other supported tokens; payments settle in your Stripe balance in your local currency; open to US businesses, in private preview in the EU, Hong Kong, Mexico and Switzerland.
Coinbase Payment Acceptance: for payment providers, marketplaces and large platforms; buyers pay in USDC or USDT; settlement in USD or USDC.
BitPay: settlement "in fiat direct to your bank account, crypto, or a mix of both."

Limits they also state

Stripe: refunds always go back as stablecoins to the customer's original wallet; 10,000 USD per transaction; no dispute support.
Coinbase: access requires onboarding with its team, with enhanced due diligence.
BitPay: "Blockchain payments are irreversible."

Sources: Stripe Docs, Coinbase Developer Platform, BitPay.6 10 11 Fees aren't listed on these pages; ask for a written quote.

How to evaluate a fiat-to-crypto provider

Provider pages answer the same questions in different places. Start with these.

Question	What to look for	Example from a provider's own page
Who is the merchant of record?	The provider, or you	Stripe acts as merchant of record for onramp transactions
Who carries fraud and dispute losses on the card leg?	Written in the contract	Stripe "assumes full liability for all fraud and disputes" on its onramp
Who runs KYC and sanctions screening?	The provider, before delivery	MoonPay: "Fraud checks, chargebacks, KYC, sanctions screening — all done by MoonPay"
Which licenses, where?	MiCA authorization in the EU, state licenses in the US	MoonPay lists MiCA authorization, a New York BitLicense and licenses in 47 states
How do you get access?	Application, review, sandbox	Stripe: onramp application first, most reviewed within 48 hours
What do you receive, and how is it refunded?	Fiat, stablecoins, or both	Stripe stablecoin payments: local currency in, stablecoin refunds out

Sources: Stripe Docs; MoonPay.5 9 6 If a provider can't show you its license numbers and its merchant of record terms, you have your answer.

Risks: volatility, chargebacks and fraud

Price movesCrypto prices change between quote and delivery; stablecoins only purport to hold their peg, in MiCA's wordsWho bears the gap between quote and settlement, and how fast you convert to fiat
Chargebacks on the card legPaying by card for crypto is a normal card payment, with the cardholder's dispute rightsWho is liable in the contract: Stripe takes it on for its onramp; others may not
Stolen cardsCrypto leaves fast and can't be pulled back, which makes on-ramps a target for stolen cardsKYC before delivery, 3-D Secure, limits for new users
No dispute, no recourseA crypto payment can't be reversed by a bank, for you or for the customerA clear refund policy, since refunds are your only tool
Licensing gapsA provider without the right license can be forced to stop serving a marketCheck the license register in each market you serve

The "no chargebacks" line on crypto pages only covers the crypto leg. Any part of the flow that runs on a card keeps the card rules, and your chargeback exposure moves to whoever is merchant of record for that card payment.

Does it make sense for an ecommerce brand?

Your situation	Fit
You sell crypto, or a wallet or app where users buy it	FitsOn-ramp, through a licensed provider
You sell goods and some customers ask to pay in crypto	FitsA crypto payment gateway as one more method
You get paid by business clients who hold stablecoins	FitsStablecoin settlement
You want to move card sales off your MCC through crypto rails	Does not fitVisa codes the sale for what is bought
You want to escape chargebacks on card payments	Does not fitThe card leg keeps its dispute rights

How Tagada helps

Where Tagada fits

Tagada works on the card side of the checkout. It routes payments across TagadaPay and processors such as Stripe, NMI and Airwallex, with one logic, and cascades to another processor when one is down or times out. Its card vault lets you switch processors without re-onboarding customers, so running subscriptions keep charging. 3D Secure 2 is native, with device intelligence and a rules engine. Each TagadaPay business is underwritten, with enhanced review on regulated verticals. Pricing is on the pricing page. Tagada follows Visa and Mastercard rules and the laws that apply to payments.

Apply for processing

If your card approvals are the real problem, start with the basics: the right MCC, a processor that accepts your business, and a backup. The payment gateway vs payment processor guide explains who decides what in a card payment.

Updated on October 14, 2026

Nick Bonnassies

CMO at Tagada

CMO at Tagada. Before Tagada, Nick built direct-to-consumer brands that generated over $115M in sales, raised over $25M in crowdfunding and sold two of them. He also works as a fractional CMO on marketing operations and AI systems.

Frequently asked questions

What is a fiat to crypto payment gateway?

It is a service that takes a payment in ordinary money, by card or bank transfer, and delivers crypto in exchange. The industry also calls it an on-ramp. Visa's name for the provider is Ramp Provider. It checks the buyer's identity, prices the crypto, takes the payment and sends the coins to a wallet.

What is the difference between a fiat-to-crypto gateway and a crypto payment gateway?

Direction. A fiat-to-crypto gateway sells crypto to someone paying with a card or bank. A crypto payment gateway lets a store accept crypto from a customer's wallet and pays the store in fiat or stablecoins. Card network rules on crypto purchases apply to the first, not to the second.

Which MCC does a crypto on-ramp use?

MCC 6051 for a provider that isn't a financial institution, or 6012 for a bank, with Special Condition Code 7 and the quasi-cash indicator in the authorization. Visa lists these crypto merchants in Tier 2 of its Integrity Risk Program, so the acquirer must register them for card-absent sales.

Can crypto payments be charged back?

A payment sent from a crypto wallet can't be pulled back by a bank; BitPay describes blockchain payments as irreversible, and Stripe lists no dispute support for stablecoin payments. The card payment used to buy crypto is different: it is an ordinary card transaction, and the cardholder keeps their dispute rights.

What is stablecoin-to-fiat settlement for businesses?

A business receives a payment in a stablecoin, such as USDC, and gets paid out in its own currency. Stripe settles stablecoin payments to the Stripe balance in local currency. Coinbase's Payment Acceptance, built for payment providers and large platforms, settles in USD or USDC after onboarding.

What is a crypto-to-fiat off-ramp?

The reverse of an on-ramp: crypto in, fiat out to a bank account. In French it is called a passage crypto-fiat. In the EU, exchanging crypto-assets for funds is a crypto-asset service under MiCA, so the provider needs an authorization. In the US, exchangers generally qualify as money transmitters under FinCEN guidance.