Costs, licensing, consumer protection Privacy, self-custody, censorship resistance

MPCVault Card

Name: MPCVault Card
Brand: MPCVault

MPCVault · Visa

4.0/5 2.4/5 · Data verified on Jun 22, 2026

MPCVault is a non-custodial, multi-signature MPC wallet for Web3 teams (exchanges, VCs, hedge funds, trading desks) paired with a Visa corporate card for business spending. The private key is split into three shares across the user's device and two separate cloud environments: all three are required to sign and no single party ever has full control, hence the self-custody model. The MPCVault card is funded with USDC across multiple chains (Ethereum, Polygon, Arbitrum and others) and supports virtual and physical cards with per-user custom spending limits and automatic expense tracking. KYC verification is required with a one-time $10 fee. The FX markup goes up to 2% and there is no cashback (0%). ATM withdrawals are not supported (ATM limit 0); where applicable a $2 plus 3% fee is shown. The card's issuance and annual fees are not publicly disclosed, so they are shown as 0 in this entry in the absence of an official figure.

Transparency: Low

46/100 · see methodology

Data exposure: Low

46/100 · lower is better for sovereignty · methodology

Data & conditions

§ Amounts in USD/GBP are shown in the service's native currency.

Network	Visa
Fund custody	Self-custody (funds in your control)
Issuance fee	Free
Annual fee	Free
Free ATM limit	Non supportato (prelievi ATM non disponibili)
ATM withdrawal	3%
FX markup	2%
Cashback	—
Chains	Ethereum, Polygon, Arbitrum
On-chain settlement	Yes
Contactless	Yes
Virtual card	Yes
KYC	Full
Privacy	5/10
Supported countries	US, EEA, UK, APAC
Funding / solidity	MPCVault e un fornitore di wallet MPC multi-firma non-custodial per team Web3 (exchange, venture capital, hedge fund e trading desk a livello globale). Ha lanciato la MPCVault Card in partnership con Rain per consentire alle aziende di spendere USDC ovunque sia accettata Visa, senza off-ramp tradizionali. La carta e attualmente virtual-only e blocca gli utenti US.
Estimated net annual cost	€0/year
Regulator	Visa (rete); carta emessa da Third National su licenza Visa, infrastruttura Rain, servizi bancari SSB (Member FDIC)
Segment	B2B
Funding / solidity	MPCVault is a provider of non-custodial multi-signature MPC wallets for Web3 teams (exchanges, venture capitals, hedge funds and trading desks globally). It launched the MPCVault Card in partnership with Rain to let companies spend USDC anywhere Visa is accepted, without traditional off-ramping. The card is currently virtual-only and blocks US users.
MiCA / License status	Nessuna licenza propria: la carta corporate è emessa tramite partner regolati; MPCVault opera come wallet MPC non-custodial per team MPCVault holds no license of its own and operates as a non-custodial MPC wallet for teams. The corporate card is issued by Third National under a Visa license with Rain payment infrastructure; banking services are provided by SSB (Member FDIC) with deposits insured up to $250,000 per depositor.

Strengths

Non-custodial multi-signature MPC wallet: key split into 3 shares, no single party has full control
Virtual and physical Visa cards with per-member custom spending limits
Funded in USDC across multiple chains with automatic corporate expense tracking

Self-custody: funds stay in your wallet — the platform cannot touch them.

Weaknesses

FX markup up to 2% and no cashback (0%)
ATM withdrawals not supported (with a $2 plus 3% fee where applicable)
Issuance and annual fees not publicly disclosed; KYC mandatory with a $10 fee

Full KYC required: verified identity, zero pseudonymity.
Subject to regulation (MPCVault holds no license of its own and operates as a non-custodial MPC wallet for teams. The corporate card is issued by Third National under a Visa license with Rain payment infrastructure; banking services are provided by SSB (Member FDIC) with deposits insured up to $250,000 per depositor.): reporting to authorities and freezes on order.

Verdict

B C ★ 4.0/5 ★ 2.4/5 Estimated net annual cost: €0/year

Limited, indirect protection: MPCVault holds no license of its own; the card is issued by Third National under a Visa license, with Rain infrastructure and SSB banking services (Member FDIC, insurance up to $250,000 per depositor). The model is self-custody (MPC key split into 3 shares), so USDC funds stay under the team's control, but card-side guarantees depend entirely on the upstream regulated partners.

High wallet sovereignty, medium on spending: the private key is split into 3 shares (device + two clouds) and no single party has full control, so funds stay non-custodial. However mandatory KYC/KYB, the block on US users and reliance on a regulated Visa issuer reduce sovereignty at the point of spending.

Privacy & anonymity 30% 1.3

Fund control 20% 5.0

Censorship resistance 20% 1.5

Costs 10% 2.5

Promp's editorial rating based on real fees and net annual cost. Promp reviews third-party products independently.

"Sovereignty" rating: score computed on privacy/anonymity (30%), fund control (20%), censorship resistance (20%), trustless/auditability (20%) and costs (10%). Same data, different weights.

FAQ

Is the MPCVault Card custodial or self-custody?

Self-custody: MPCVault is a non-custodial multi-signature MPC wallet. The private key is split into three shares across the device and two separate clouds, all required to sign, and no single party ever has full control of funds.

How much does the MPCVault Card cost?

The FX markup reaches up to 2% and there is no cashback. KYC verification has a one-time $10 fee. ATM withdrawals are not supported. Issuance and annual fees are not publicly disclosed.