GENIUS Act and MiCA: what they mean for businesses accepting stablecoin payins

Both laws regulate stablecoin issuers and service providers more than the businesses that accept payments. If you take stablecoin payins through a provider, you are usually a user, not a regulated party. The laws still matter, because they decide which stablecoins your provider can deliver and what checks it must run.

Last reviewed: October 23, 2026. Primary sources are linked at the end, with the date each was checked.

Key takeaways

• The GENIUS Act (US) and MiCA (EU) put most obligations on issuers and on service providers, not on a business that receives payins.
• Your exposure runs through your provider: which tokens it offers, how it screens people, and whether it is authorized where it operates.
• MiCA's stablecoin rules have applied since June 30, 2024. The transitional period for crypto-asset service providers ended no later than July 1, 2026.
• The GENIUS Act's effective date is the earlier of 18 months after enactment or 120 days after final regulations. The enactment date was July 18, 2025.
• Ask providers specific questions in writing. A short list is at the end of this page.

This page covers the payin-business angle. For the dates, see the GENIUS Act and MiCA timeline. For the US statute in depth, read the GENIUS Act explained for businesses. For the EU side, read MiCA stablecoin rules explained. If you are new to the product, start with what a stablecoin payin API is.

What is the GENIUS Act?

The GENIUS Act is a US federal law that sets rules for payment stablecoins: tokens meant to be used for payments and redeemable at a fixed value. President Trump signed it on July 18, 2025. The enrolled text is on Congress.gov.

In plain terms, it does three things. It limits who may issue a payment stablecoin in the US to permitted issuers. It sets reserve and redemption requirements for those issuers. And it sets a distribution rule for digital asset service providers, which are businesses that exchange, transfer or custody digital assets for others. The effective date is the earlier of 18 months after enactment or 120 days after final implementing regulations. Regulators are still writing detailed rules, so check current status before you plan around any single date.

What is MiCA?

MiCA is the EU's Markets in Crypto-Assets Regulation, Regulation (EU) 2023/1114, published on EUR-Lex. It covers issuers of stablecoins and the crypto-asset service providers (CASPs) that trade, hold or transfer them.

Its stablecoin rules, in Titles III and IV, applied from June 30, 2024. The rest of the regulation, including CASP authorization, applied from December 30, 2024. MiCA splits stablecoins into e-money tokens, which track a single official currency, and asset-referenced tokens, which track a basket. Dollar stablecoins used for payments are generally e-money tokens. ESMA, the EU securities regulator, keeps a MiCA hub with registers and guidance.

Do these laws apply to my business or to my provider?

They apply mainly to your provider and to the token issuer. A business that receives payins into a wallet, without issuing tokens and without exchanging or transferring them for other people, is usually a user. Your provider, if it converts fiat to stablecoins for you, is the one most likely to fall within the service-provider definitions.

This is a general reading, not a determination. Whether a particular business is in scope depends on what it does and where. Take advice if you hold or move stablecoins for other people.

Here is how the obligations tend to divide:

Which stablecoins qualify?

A stablecoin qualifies when its issuer meets the law of the region where it is offered. In the US, that means a permitted issuer, or a foreign issuer that meets the Act's foreign-issuer path. In the EU, an e-money token must come from an authorized credit institution or e-money institution.

This is why the same token can be available in one region and restricted in another. Compare USDC vs USDT for payins for the payin-specific trade-offs. Whether a given token qualifies on a given venue is a question for that venue and its legal advisers, so ask your provider rather than assuming.

What changed on July 1, 2026 in the EU?

July 1, 2026 was the latest end of the MiCA transitional period for CASPs. Article 143(3) of MiCA lets providers that operated under national law before December 30, 2024 continue until that date, or until they are authorized or refused, whichever is first. Member States could shorten the period.

After that date, a provider serving EU clients needs MiCA authorization. For a payin business, the practical effect is simple: confirm your EU-facing provider holds an authorization, not just a pre-MiCA national permission. ESMA's interim MiCA register is the place to start.

What should I ask my provider?

Ask questions that produce checkable answers. Use this list:

1. Which role do you play under the GENIUS Act and under MiCA, and what is your authorization or registration in each region?
2. Which stablecoins do you deliver for payins in each region, and who issues them?
3. What happens to my flows if a token becomes unavailable in a region?
4. How do you handle KYC, KYB, screening and the Travel Rule, and what do you need from me?
5. Who holds the wallet that receives the stablecoins: me, my customer or you?
6. When did you last review your legal position, and can you share the summary?

Where does BlindPay fit?

BlindPay is a payment infrastructure provider, not a stablecoin issuer. It converts fiat deposits into stablecoins issued by others and delivers them to a wallet. It does not issue tokens, so issuer duties such as reserves and redemption sit with the issuers.

Facts from the BlindPay docs that bear on the questions above:

• Tokens are a field. Payin delivery supports USDC and USDT on Ethereum, Polygon and Solana, and USDC on Base, Arbitrum and Stellar. You set the token on each payin quote, so a route can change without a new integration. See the payins reference.
• Customers are verified first. The payin tutorials require a customer with kyc_status: "approved" before a payin can target their wallet. See Payin with managed wallet.
• Wallet choice is explicit. A payin delivers to a customer-controlled blockchain wallet or to an optional BlindPay-managed wallet (beta).
• Fees are in the quote. Per-transaction fees appear in the live quote before you create the payin. See pricing.

For BlindPay's licensing and compliance statements, use its compliance page and security page. This article does not make licensing claims on BlindPay's behalf.

Sources

• GENIUS Act enrolled text: Congress.gov, S.1582, 119th Congress, checked on October 23, 2026.
• MiCA, Regulation (EU) 2023/1114: EUR-Lex, checked on October 23, 2026.
• ESMA, MiCA hub and registers: esma.europa.eu, checked on October 23, 2026.
• Transfer of Funds Regulation (EU) 2023/1113: EUR-Lex, checked on October 23, 2026.
• BlindPay docs: Payins and Payin with managed wallet.

This article is general information, not legal advice.