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Adyen vs Mercury
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Onboards businesses in United States
Adyen
AvailableMercury
AvailableAccept payments
Adyen
Enterprise acquiring with local payment methods across most major markets, online and in person.Mercury
Invoices your customers pay by card or ACH debit, also available through the API.Pay people abroad
Adyen
Pay out to sellers and users through Adyen for Platforms.Mercury
Domestic ACH and wires, international wires, and API payments to saved recipients.Multi-currency account
Adyen
Business accounts for platform users in selected markets.Mercury
US dollar checking and savings with FDIC insurance through partner banks, plus Treasury for idle cash.Business cards
Adyen
Card issuing for platforms and businesses.Mercury
Debit cards and the IO corporate credit card with spend controls.Stablecoins
Adyen
Not offeredMercury
Not offeredYield on idle cash
Adyen
Not offeredMercury
Mercury Treasury invests idle cash in government money market funds and, since August 2026, an ultra-short bond fund. It is not FDIC insured, may lose value, and carries a 0.15–0.60% fee.Yield on idle cash
A return on money you are not using. How safe it is depends on where the return comes from, not on how high the rate is.
Where the return comes from
Adyen
No yield offeredMercury
Low risk, not insuredMoney market fundModerate riskShort-term bond fundIs the money protected?
Adyen
–Mercury
Money market fund: Not a deposit and not insured. The fund holds short-term government debt and aims to keep its value stable, but that is not guaranteed. Broker protection (SIPC in the US) covers the broker failing, not investment losses.Short-term bond fund: Not insured, and the price moves every day, so you can get back less than you put in.Does the rate change?
Adyen
–Mercury
Floats daily with central bank rates, so it falls when rates are cut. Moves with interest rates and bond prices.Last seen: Up to about 3.6% net, for the largest balances (May 2026)Platform & marketplace
Run payments for other businesses: sign them up, take a cut, pay them out.
Sub-accounts for your users
Adyen
YesAdyen for Platforms: account holders and legal entities, with hosted or API onboarding and Adyen doing KYC.Mercury
NoMercury’s API manages your own accounts; there is no product for creating accounts for your users.Split payments and platform fees
Adyen
YesSplit each payment between users and take platform commission.Mercury
NoNot a payment processor.Embeddable UI
Adyen
YesHosted onboarding and embeddable components for users.Mercury
NoNo embeddable components.Pay out to your users
Adyen
YesPayouts to users’ bank accounts, or into Adyen business accounts.Mercury
PartlyAPI payments to saved recipients by ACH or wire. Fine for paying vendors, not built for paying a platform’s users at scale.Embedded finance for your users
Give your users financial products under your brand.
Accounts that hold money
Adyen
PartlyBusiness accounts with account numbers in BE, DE, ES, FR, GB, NL and the US. Adyen says the feature is still in development.Mercury
NoNot offered to platforms.Cards for your users
Adyen
YesVirtual and physical Visa and Mastercard cards for platform users in Europe, the UK and the US.Mercury
NoCards are for your own team.Financing for your users
Adyen
YesCapital for platform users in Europe, the UK, Australia and the US.Mercury
NoNot offered to platforms.Consumer apps
Build for individuals, not just businesses, the way Bridge allows.
End users can be individuals
Adyen
NoAccount holders are organisations and sole proprietors, not consumers.Mercury
NoMercury Personal is Mercury’s own consumer banking; you cannot build consumer products on it.Consumer wallets or accounts
Adyen
NoBusiness accounts only.Mercury
NoNot offered to platforms.Consumer cards
Adyen
NoCards serve platforms and their business users, for example payout cards for marketplace sellers.Mercury
NoNot offered to platforms.Stablecoins
Dollar-backed tokens as a payment and treasury rail.
Accept stablecoins
Adyen
NoNo stablecoin product found in public materials.Mercury
NoNo stablecoin product found in public materials.Hold stablecoin balances
Adyen
NoNo stablecoin product found in public materials.Mercury
NoNo stablecoin product found in public materials.Pay out in stablecoins
Adyen
NoNo stablecoin product found in public materials.Mercury
NoNo stablecoin product found in public materials.Issue your own stablecoin
Adyen
NoNo stablecoin product found in public materials.Mercury
NoNo stablecoin product found in public materials.Regulatory risk in United States
Adyen
No stablecoin productsMercury
No stablecoin productsAI agents
Build with AI tools, and let AI agents shop and pay.
Official MCP server
Adyen
Not confirmedNo official MCP server found; only community-built ones.Mercury
YesHosted MCP server in beta: AI assistants can read balances, transactions, cards and recipients, with OAuth sign-in.Checkout for AI agents
Adyen
YesWorks as the payment provider behind Agentic Commerce Protocol checkouts, with gaps for CVC re-entry and network tokens. Also backs Google’s AP2 and the Universal Commerce Protocol.Mercury
NoDoes not process checkout payments, so there is nothing for an agent to check out with.Cards for AI agents
Adyen
Not confirmedNot found in public materials.Mercury
Not confirmedNot found in public materials.Working with them
How easy it is to get started.
Self-serve signup
Adyen
PartlyMost businesses go through Adyen’s sales team.Mercury
YesApply online.Published pricing
Adyen
PartlyPer-transaction fees by payment method are published; overall terms are negotiated.Mercury
YesFree core plan; paid plans are published.Public API and sandbox
Adyen
YesPublic API and test environment.Mercury
YesREST API for accounts, transactions, payments and invoicing, with webhooks and OAuth for partner apps.Coming soon
Announced but not launched. These are plans, not products you can sign up for today: timing often slips, and some never ship.
Announced, not yet live
Adyen
Nothing announcedMercury
In short
Countries onboarded
Adyen
43 of 170Mercury
1 of 170Designed for
Adyen
High-volume merchants that want local acquiring and one contract across many regions.Mercury
US startups that want a fast, API-friendly bank account, including founders based outside the US.Limitations
Adyen
Onboarding goes through Adyen’s sales team, and the service is aimed at larger businesses.Mercury
Only for US-registered companies, and not designed for building products on top of.| Adyen Payment processor | Mercury Business banking | |
|---|---|---|
| Onboards businesses in United States | Available | Available |
| Accept payments | Enterprise acquiring with local payment methods across most major markets, online and in person. | Invoices your customers pay by card or ACH debit, also available through the API. |
| Pay people abroad | Pay out to sellers and users through Adyen for Platforms. | Domestic ACH and wires, international wires, and API payments to saved recipients. |
| Multi-currency account | Business accounts for platform users in selected markets. | US dollar checking and savings with FDIC insurance through partner banks, plus Treasury for idle cash. |
| Business cards | Card issuing for platforms and businesses. | Debit cards and the IO corporate credit card with spend controls. |
| Stablecoins | Not offered | Not offered |
| Yield on idle cash | Not offered | Mercury Treasury invests idle cash in government money market funds and, since August 2026, an ultra-short bond fund. It is not FDIC insured, may lose value, and carries a 0.15–0.60% fee. |
| Yield on idle cashA return on money you are not using. How safe it is depends on where the return comes from, not on how high the rate is. | ||
| Where the return comes from | No yield offered | Low risk, not insuredMoney market fundModerate riskShort-term bond fund |
| Is the money protected? | – | Money market fund: Not a deposit and not insured. The fund holds short-term government debt and aims to keep its value stable, but that is not guaranteed. Broker protection (SIPC in the US) covers the broker failing, not investment losses.Short-term bond fund: Not insured, and the price moves every day, so you can get back less than you put in. |
| Does the rate change? | – | Floats daily with central bank rates, so it falls when rates are cut. Moves with interest rates and bond prices.Last seen: Up to about 3.6% net, for the largest balances (May 2026) |
| Platform & marketplaceRun payments for other businesses: sign them up, take a cut, pay them out. | ||
| Sub-accounts for your users | YesAdyen for Platforms: account holders and legal entities, with hosted or API onboarding and Adyen doing KYC. | NoMercury’s API manages your own accounts; there is no product for creating accounts for your users. |
| Split payments and platform fees | YesSplit each payment between users and take platform commission. | NoNot a payment processor. |
| Embeddable UI | YesHosted onboarding and embeddable components for users. | NoNo embeddable components. |
| Pay out to your users | YesPayouts to users’ bank accounts, or into Adyen business accounts. | PartlyAPI payments to saved recipients by ACH or wire. Fine for paying vendors, not built for paying a platform’s users at scale. |
| Embedded finance for your usersGive your users financial products under your brand. | ||
| Accounts that hold money | PartlyBusiness accounts with account numbers in BE, DE, ES, FR, GB, NL and the US. Adyen says the feature is still in development. | NoNot offered to platforms. |
| Cards for your users | YesVirtual and physical Visa and Mastercard cards for platform users in Europe, the UK and the US. | NoCards are for your own team. |
| Financing for your users | YesCapital for platform users in Europe, the UK, Australia and the US. | NoNot offered to platforms. |
| Consumer appsBuild for individuals, not just businesses, the way Bridge allows. | ||
| End users can be individuals | NoAccount holders are organisations and sole proprietors, not consumers. | NoMercury Personal is Mercury’s own consumer banking; you cannot build consumer products on it. |
| Consumer wallets or accounts | NoBusiness accounts only. | NoNot offered to platforms. |
| Consumer cards | NoCards serve platforms and their business users, for example payout cards for marketplace sellers. | NoNot offered to platforms. |
| StablecoinsDollar-backed tokens as a payment and treasury rail. | ||
| Accept stablecoins | NoNo stablecoin product found in public materials. | NoNo stablecoin product found in public materials. |
| Hold stablecoin balances | NoNo stablecoin product found in public materials. | NoNo stablecoin product found in public materials. |
| Pay out in stablecoins | NoNo stablecoin product found in public materials. | NoNo stablecoin product found in public materials. |
| Issue your own stablecoin | NoNo stablecoin product found in public materials. | NoNo stablecoin product found in public materials. |
| Regulatory risk in United States | No stablecoin products | No stablecoin products |
| AI agentsBuild with AI tools, and let AI agents shop and pay. | ||
| Official MCP server | Not confirmedNo official MCP server found; only community-built ones. | YesHosted MCP server in beta: AI assistants can read balances, transactions, cards and recipients, with OAuth sign-in. |
| Checkout for AI agents | YesWorks as the payment provider behind Agentic Commerce Protocol checkouts, with gaps for CVC re-entry and network tokens. Also backs Google’s AP2 and the Universal Commerce Protocol. | NoDoes not process checkout payments, so there is nothing for an agent to check out with. |
| Cards for AI agents | Not confirmedNot found in public materials. | Not confirmedNot found in public materials. |
| Working with themHow easy it is to get started. | ||
| Self-serve signup | PartlyMost businesses go through Adyen’s sales team. | YesApply online. |
| Published pricing | PartlyPer-transaction fees by payment method are published; overall terms are negotiated. | YesFree core plan; paid plans are published. |
| Public API and sandbox | YesPublic API and test environment. | YesREST API for accounts, transactions, payments and invoicing, with webhooks and OAuth for partner apps. |
| Coming soonAnnounced but not launched. These are plans, not products you can sign up for today: timing often slips, and some never ship. | ||
| Announced, not yet live | Nothing announced | Awaiting approvalMercury Bank, N.A.No date given · Includes United States Details and sources → |
| In short | ||
| Countries onboarded | 43 of 170 | 1 of 170 |
| Designed for | High-volume merchants that want local acquiring and one contract across many regions. | US startups that want a fast, API-friendly bank account, including founders based outside the US. |
| Limitations | Onboarding goes through Adyen’s sales team, and the service is aimed at larger businesses. | Only for US-registered companies, and not designed for building products on top of. |
Common questions
Is Adyen or Mercury available in more countries?
Adyen. Of the 170 countries we track, Adyen onboards businesses in 43 and Mercury in 1. Both serve businesses in 1. Only Adyen: Canada, Mexico, Brazil, United Kingdom, Ireland, Germany, France, Netherlands, Belgium, Luxembourg, Austria, Spain and 30 more.
What do Adyen and Mercury offer?
Accept payments: Adyen yes, Mercury yes. Pay people abroad: Adyen yes, Mercury yes. Multi-currency account: Adyen yes, Mercury yes. Business cards: Adyen yes, Mercury yes. Stablecoins: Adyen no, Mercury no. Yield on idle cash: Adyen no, Mercury yes.
How do Adyen and Mercury differ for platforms and embedded finance?
Sub-accounts for your users: Adyen yes, Mercury no. Split payments and platform fees: Adyen yes, Mercury no. Embeddable UI: Adyen yes, Mercury no. Pay out to your users: Adyen yes, Mercury partly. Accounts that hold money: Adyen partly, Mercury no. Cards for your users: Adyen yes, Mercury no. Financing for your users: Adyen yes, Mercury no. Official MCP server: Adyen not confirmed, Mercury yes. Checkout for AI agents: Adyen yes, Mercury no.
Who is Adyen designed for?
High-volume merchants that want local acquiring and one contract across many regions. Limitations: Onboarding goes through Adyen’s sales team, and the service is aimed at larger businesses.
Who is Mercury designed for?
US startups that want a fast, API-friendly bank account, including founders based outside the US. Limitations: Only for US-registered companies, and not designed for building products on top of.
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