Islamic Finance Principles Assessment
Riba — Does USDa involve interest?
USDa's economic engine runs substantially on interest: its reserves include tokenized Treasury bills and interest-bearing lending vaults, and its yield product pays depositors from borrower interest and bond coupons. This is a textbook riba structure at the balance-sheet level, even though the yield rate floats rather than being fixed. For Muslim investors, holding or staking USDA for yield raises direct riba concerns that outweigh its utility as a payment stablecoin.
Assessment: Riba Dominant
Score: 22.5/100
Our methodology examines 10 criteria to evaluate how well USDa avoids interest-based mechanisms.
Angle Protocol's revenue comes from two interest-linked sources: coupon income on tokenized US Treasury bills backing USDA, and interest charged to borrowers who draw USDA/USDC against collateral through Angle's Lending AMO and Morpho-based vaults (steakUSDC, gtUSDAcore). Both are conventional, interest-bearing income streams rather than profit-sharing, trade-based, or asset-backed returns in a Shariah-compliant sense. The protocol keeps a portion of this interest income and redistributes the remainder to stUSD holders. Because the reserve composition and the lending mechanics are inherently interest-based, the treasury itself cannot be characterized as riba-free, regardless of USDA's peg stability or trading utility.
Depositing USDA for stUSD is a savings-style reward mechanism, not validator staking: there is no lock-up, no minimum, and no slashing, and the reward is a continuously appreciating exchange rate rather than a fixed coupon. Historical APY has ranged from roughly six to twenty-five percent, recently settling near nine percent — variable rather than fixed, which is a mitigating factor structurally. However, the yield itself is sourced directly from Treasury-bill interest and borrower interest, meaning even a variable-rate wrapper does not change the underlying riba-based origin of the returns being distributed to stUSD holders.
Gharar — How much uncertainty does USDa involve?
Gharar in USDa centers on documentation gaps rather than product complexity: the mechanics of stUSD, the Lending AMO, and the Borrowing module are reasonably well described, but critical verification pieces are missing. Adoption metrics reduce uncertainty about real usage, while the absence of named personnel and audit confirmation increases it. On balance, informational uncertainty here is material enough to warrant caution.
Assessment: Excessive Gharar (High Uncertainty)
Score: 46.8/100
Our methodology examines 15 criteria including team transparency, audit quality, and governance.
No individual founders, team biographies, or credentials for Angle Protocol were found in available sources; the project is identified only by its backer, a16z, without named developers or a public leadership roster. A LinkedIn profile surfaced during research described an unrelated project and was correctly excluded rather than misattributed. Whether Angle's smart contracts are open-source, and how its DAO or governance functions, are not detailed in available documentation. This anonymity at the team level, combined with real usage metrics ($2.35B volume, 15M+ supply, 13 chains), gives a mixed transparency picture: functioning at scale, but not independently traceable to accountable individuals.
No named security audit firm, audit date, or published audit report specific to Angle Protocol or USDA was found anywhere in the retrieved research. This is a plain and material gharar concern: an unaudited DeFi protocol handling billions in stablecoin volume and running active lending/borrowing modules carries unverified smart-contract risk that cannot be dismissed on the basis of adoption alone. Mechanics for stUSD redemption, fees, and yield sourcing are documented in Angle's own blog posts and forum discussions, which is useful but self-published rather than independently verified, and none of it addresses Shariah-specific risk disclosure.
Maysir — Does USDa involve gambling or speculation?
USDa itself is not structured as a gambling or speculative instrument; it is designed as a dollar-pegged payment and settlement token with a savings overlay. The main speculative exposure sits in secondary-market trading of USDA and stUSD rather than in the protocol's core design. Used as intended — for payments, collateral, and settlement — USDA does not resemble maysir.
Assessment: Moderate Maysir (High Risk)
Score: 50.9/100
Our methodology examines 11 criteria to determine whether USDa is a gambling instrument or a genuine economic tool.
USDA's stated purpose is functional: a medium for payments, DeFi collateral, and cross-currency settlement, paired with a euro-pegged sibling (EURA) to facilitate onchain forex swaps. This is productive financial infrastructure rather than a chance-based wagering product — value moves in exchange for genuine economic activity (borrowing, lending, currency conversion), not from randomized payouts or zero-sum bets. That said, this utility does not resolve the separate riba concern tied to its interest-based backing, which is assessed independently of speculation risk.
With over fifteen million USDA in circulating supply and $2.35 billion in reported trading volume across thirteen chains, usage patterns suggest genuine transactional and collateral demand rather than pure speculative churn. Nonetheless, any stablecoin can be traded speculatively on secondary markets by third parties seeking arbitrage or yield-chasing behavior around stUSD's floating rate; this potential misuse is not attributable to USDA's own design and should not be treated as determinative of its ruling. On balance, USDA's core function leans toward utility, with speculation as an incidental, non-primary risk.
The Full 27-Point Screening
1. Legitimacy (4 criteria)
| Criterion | Score | Analysis |
|---|
| Team Transparency | 40/100 | Angle is described as an a16z-backed DeFi protocol but no individual founders or credentials are named in the sources. |
| Fraud & Scam Risk | 55/100 | No fraud, hack, or rug-pull evidence tied to this specific project was found, though the sources also provide no dedicated security or trust track record. |
| Use Case Legitimacy | 80/100 | Sources describe clear real-world utility as a payments, DeFi-collateral, and onchain-forex dollar stablecoin. |
| Ethical Practices | 65/100 | The protocol operates in stablecoin/payments infrastructure, not an inherently prohibited industry, though its own design bakes in conventional interest income addressed under later criteria. |
Summary: Angle Protocol behind USDA is institutionally backed with no named individual founders in the sources and no specific fraud or regulatory action found against it.
2. Project Operations (9 criteria)
| Criterion | Score | Analysis |
|---|
| Core Protocol Business | 50/100 | The core business is stablecoin issuance combined with an in-house lending/borrowing operation, a sector that is not itself prohibited but whose revenue engine is interest-based. |
| Transaction Fees | 45/100 (low evidence) | The sources do not describe any fee-burn or basic transaction-fee handling mechanism for ordinary USDA transfers. |
| Treasury Assets | 15/100 | Treasury holdings explicitly include tokenized US Treasury bills and interest-bearing DeFi lending-vault deposits. |
| Revenue Model | 15/100 | Protocol revenue is generated from Treasury-bill yield and interest paid by USDA/USDC borrowers. |
| Transparency | 55/100 | Angle publishes detailed documentation on backing assets and yield mechanics, but open-source status of the codebase is not confirmed in these sources. |
| Governance | 40/100 (low evidence) | Governance structure and decision-making process for the protocol/DAO are not described in the sources. |
| Launch Fairness | 40/100 (low evidence) | No information on launch fairness, pre-mine, or insider allocation was found. |
| Token Distribution | 40/100 (low evidence) | No token distribution or vesting schedule for USDA or any associated governance token was found in these sources. |
| Speculation/Utility Ratio | 80/100 | USDA functions as a stablecoin for payments and collateral, not as a speculative/meme instrument. |
Summary: USDA is a decentralized dollar stablecoin whose treasury blends USDC, tokenized Treasury bills, and DeFi lending-vault deposits, with governance, launch fairness, and distribution details largely undocumented in the sources.
3. Financial Health (4 criteria)
| Criterion | Score | Analysis |
|---|
| Protocol Revenue | 15/100 | Revenue sources documented directly are Treasury-bill yield and borrower interest, both interest-based. |
| Financial Status | 65/100 | Reported circulating supply above fifteen million and multi-billion-dollar volume across thirteen chains suggest meaningful market standing, though no full financial statements are available. |
| Interest Assessment | 10/100 | The base protocol itself runs a Borrowing module and a Lending AMO that charge and pay interest, making interest-based lending a core, not third-party, feature. |
| Audit Quality | 20/100 (low evidence) | No named audit firm or audit report specific to Angle Protocol or USDA was found in these sources; it must be treated as unverified. |
Summary: The protocol's revenue and native yield come directly from Treasury-bill interest and borrower interest through its own lending modules, and no named security audit for USDA could be found in the sources.
4. Token Economics (5 criteria)
| Criterion | Score | Analysis |
|---|
| Token Purpose | 80/100 | USDA is presented throughout as a functional dollar-settlement and DeFi-collateral token, not a meme asset. |
| Governance Rights | N/A | Sources describe USDA purely as a stablecoin without holder governance rights attached to it, an absence that appears to be a neutral design choice. |
| Rewards Distribution | 30/100 | Reward rates for stUSD vary over time but are explicitly sourced from Treasury-bill and lending interest rather than profit/loss-sharing performance. |
| Speculation Controls | 40/100 (low evidence) | No anti-speculation mechanisms such as caps, cooldowns, or redemption limits are described in the sources. |
| Asset Backing | 15/100 | Backing assets explicitly include interest-bearing Treasury bills and interest-earning DeFi vault deposits rather than halal-screened reserves. |
Summary: USDA functions as a genuine utility stablecoin rather than a meme token, but its stUSD reward mechanism is a variable-rate pass-through of conventional interest income.
5. Staking Mechanism (5 criteria)
| Criterion | Score | Analysis |
|---|
| Mechanism Type | 80/100 | stUSD is a freely transferable, non-custodial ERC-20 token with no lock-up and fee-free redemption at any time. |
| Islamic Contract Classification | 10/100 | The yield mechanism is a direct interest pass-through from Treasury bills and borrower interest, resembling Qard-with-increment rather than a Mudarabah/Wakalah structure. |
| Rewards Structure | 20/100 | Rewards vary in rate over time but are structurally derived from fixed-income interest sources, not risk-sharing real economic activity. |
| Documentation | 75/100 | Angle's own documentation and governance-forum posts detail the staking mechanics, yield sources, and liquidity terms. |
| Shariah Alignment | 10/100 | The core yield engine relies on an unresolved riba-type interest pass-through, a decisive rather than peripheral Shariah concern. |
Summary: USDA offers a non-custodial, lock-up-free staking route into stUSD, but its rewards are sourced from Treasury-bill and lending interest, raising an unresolved riba-classification concern.
Overall Assessment: USDA is a functioning, well-adopted DeFi stablecoin with genuine utility, but its core revenue and reward engine is built on conventional interest income, which is the central unresolved Shariah concern.
Written by ThanvirFounder, Ex Director S&P Global Energy
Reviewed by Imam Omar SiddiqiShariah Scholar