Earn returns on your funds

Up to 8%* returns on EUR or USD. A few minutes to set up.
Open an account
Talk to an expert
Trusted by
8.25% APY
Net return in USD
6.25% APY
Net return in EUR
<60s
Withdrawal time
$39B+
Liquidity across lending markets
$150B+
Stablecoins in circulation
*APY reflects returns originating from borrower interest through decentralized protocols, not from Byzantine Finance. Byzantine Finance is a technology company, not a bank.
Products

Start started in a few clicks

Get started in minutes. Whether you're integrating or onboarding directly.
01
Connect
Open an account or integrate our API. Full KYC/KYB onboarding with dedicated support.
02
Deploy
Choose your product, Prime EUR or Prime USD. Deposit via stablecoin or bank transfer.
03
Earn
Returns accrue daily. Returns are variable and not guaranteed. Withdraw anytime in under 60 seconds. Full transparency and reporting.

Two ways to use Byzantine

Whether you manage a treasury or build financial products, pick the path that fits.
For Platforms & Fintechs

Launch an earn program in weeks

Offer your users yield in EUR or USD, fully white-labelled. We handle strategy, compliance, and infrastructure. Your users see a simple earn feature; we power everything behind the scenes.
Choose your currency, EUR or USD
Customisable strategy and risk profile
API, SDK, sandbox environment, and integrator dashboard
Stickier deposits and higher user retention
Live in 3 weeks
Open an account
Open an account
For Treasuries & Allocators

Earn returns on your capital

Open an institutional-grade account directly. Insured capital, overcollateralised loans, daily returns, and instant withdrawals.
Up to 6-8% APY*
24/7 instant liquidity
Segregated accounts
Insurance on principal
EUR & USD
Daily return distribution
Open an account
Open an account
Security

Built to keep your funds safe

Multiple independent layers of protection. Bankruptcy-remote, insured against digital asset crime risk, regulated partners.

Over-collateralised lending

Borrowers deposit more collateral than they borrow. Your principal is backed at all times.

Insurance by Aon

Up to 100% of your principal plus returns insured against digital asset crime risk.

Bankruptcy-remote architecture

Smart contracts handle all fund routing. Byzantine never holds your assets.

Real-time monitoring

Continuous on-chain monitoring of all positions and risk parameters, 24/7.

Fully compliant

Strategy managed by a MiCA-regulated partner.

Audited partners

Keyrock (regulated DASP), Portofino (FX), Aon (insurance), all independently auditable.

Ready to get started?

Join the institutions already earning yield with Byzantine.
Open an account
Schedule a demo

Double T-Bills.
Institutionally secured.

Open an account
Schedule a demo
For Platforms
Overview
API Documentation
Case Studies
Integration Guide
For Treasuries
Overview
Products
Yield Calculator
Use Cases
Use Cases
Corporate Treasuries
Individual investors
Small Businesses
Startups
Family offices & HNWIs
Wealth & Assets Managers
Company
Blog
Documentation
Media Kit
Support
© 2026 Byzantine
Legal Notice
Terms & Conditions
Privacy Policy
Cookie Policy
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Investing in crypto-assets involves risks including total loss of capital. Past returns do not guarantee future results. Returns are variable and not guaranteed. Byzantine Finance SAS provides technical infrastructure; it is not a financial intermediary. Strategy managed by Keyrock Asset Management (AMF-regulated). Insurance covers technical risks only, not market losses.

Double T-Bills.
Same Safety.

Book a demo
Open an account
© 2026 Byzantine
Legal Notice
Terms & Conditions
Privacy Policy
Cookie Policy
Manage Cookies
Byzantine Finance SAS (”Byzantine Finance”) is a simplified joint-stock company (SAS) registered with the Nanterre Trade Register (SIREN: 929 169 217) and headquartered at 120 Rue Jean Jaures, 92300 Levallois-Perret, France.
Byzantine Finance is a technology infrastructure provider and does not operate as a bank, financial institution, regulated intermediary, or crypto-asset custodian. It does not hold client assets nor provide custody or transaction execution. The infrastructure offers technical tools allowing users, under their control, to interact with decentralized finance protocols and regulated third-party partners via self-hosted or third-party wallets, without Byzantine Finance intervening in or controlling assets or transactions.
Byzantine Finance partners with Bridge Building Sp. Z.o.o. (KRS: 0001039515) (“Bridge”) to enable users to conduct certain stablecoin transactions. Byzantine Finance does not make transactions on behalf of users. Applicable services are provided to users directly by Bridge, in accordance with https://bridge.xyz/legal.
Any balance information denominated in fiat currency is for informational purposes only.
Byzantine Finance is not a stablecoin issuer, does not make any promise (and does not have any obligation) to redeem stablecoins.
Byzantine Finance does not hold any balance on behalf of its users and does not pay interest on digital asset balances.
See our Terms & Conditions for more information.
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