Reserve management is the foundational compliance obligation for stablecoin issuers. The credibility and stability of any fiat-backed stablecoin depends on the issuer’s ability to demonstrate, at all times, that the stablecoin supply is fully backed by high-quality, liquid assets that can be converted to the reference currency at par value on demand. Regulatory frameworks across all major jurisdictions – the US GENIUS Act, MiCA in the EU, and jurisdiction-specific regimes in Singapore, Hong Kong, and the UK – impose specific requirements on what assets can comprise reserves, how they must be managed, and how the issuer must demonstrate compliance to regulators and the public.
The collapse of TerraUSD in May 2022, which destroyed approximately $40 billion in value, and the scrutiny of Tether’s reserve composition that dominated regulatory discourse from 2019 through 2023, have made reserve compliance the most closely watched aspect of stablecoin regulation. Regulators, auditors, and the market demand transparency that goes well beyond the bare minimum legal requirements.
Reserve Asset Quality Standards
US GENIUS Act Requirements
The GENIUS Act specifies a narrow list of eligible reserve assets, designed to ensure maximum safety and liquidity:
Tier 1 Assets (Highest Quality):
- US Treasury securities with remaining maturity of 93 days or less
- Demand deposits at FDIC-insured depository institutions
- Federal Reserve balances (including reserves held at a Federal Reserve Bank)
- Overnight reverse repurchase agreements fully collateralized by US Treasury securities
Prohibited Assets:
- Commercial paper (even high-grade CP is excluded)
- Corporate bonds
- Money market fund shares (unless invested exclusively in eligible assets)
- Other crypto-assets or digital assets
- Any asset that is not denominated in US dollars
The prohibition on commercial paper is particularly notable because Tether historically held significant commercial paper in its reserves, a practice that drew intense regulatory scrutiny. The GENIUS Act effectively codifies the expectation established through market pressure and regulatory guidance.
MiCA Reserve Requirements (EU)
For E-Money Tokens (EMTs):
- Reserves must be held as deposits at credit institutions (minimum 30% of the reserve for significant EMTs)
- Remaining reserves can be invested in secure, low-risk instruments denominated in the reference currency
- No single credit institution may hold more than a specified percentage of total reserves (concentration limits)
- Assets must be invested in highly liquid financial instruments with minimal market risk, credit risk, and concentration risk
For Asset-Referenced Tokens (ARTs):
- Reserves must match the composition described in the issuer’s whitepaper
- Assets must be invested in highly liquid financial instruments with minimal market, credit, and concentration risk
- The EBA specifies eligible asset classes through regulatory technical standards
- No rehypothecation or lending of reserve assets
Singapore MAS Requirements
MAS’s stablecoin framework requires:
- Reserves in cash, cash equivalents, or short-dated government securities (90-day maturity or less) denominated in the peg currency
- Assets held in segregated trust accounts
- Reserves must exceed outstanding stablecoins by a prudential margin (specified by MAS)
- Mark-to-market valuation of reserves at least daily
Reserve Segregation and Custody
Legal Segregation
Reserves must be legally separated from the issuer’s corporate assets to protect stablecoin holders in the event of the issuer’s insolvency. Implementation approaches include:
Statutory Trust: Reserves held in trust for the benefit of stablecoin holders, with the issuer as trustee. This provides the strongest legal protection, as trust assets are not part of the issuer’s bankruptcy estate.
Bankruptcy-Remote SPV: Reserves held by a special purpose vehicle that is legally separate from the issuer and structured to be bankruptcy-remote. The SPV’s sole purpose is holding reserve assets for the benefit of stablecoin holders.
Segregated Bank Accounts: At minimum, reserves must be held in accounts that are clearly designated as belonging to stablecoin holders, separate from the issuer’s operating accounts. Banking agreements should include provisions preventing the bank from exercising set-off rights against reserve accounts.
Custody Arrangements
Reserve asset custody must meet institutional standards:
Treasury Securities:
- Held in a custodial account at a qualified custodian (bank, trust company, or registered broker-dealer)
- Custodian should be subject to regulatory examination and capital requirements
- Sub-custodial arrangements must be disclosed and approved
- Major custodians for stablecoin reserves include BNY Mellon, State Street, and JPMorgan Chase
Bank Deposits:
- Distributed across multiple FDIC-insured banks to ensure that the insured deposit limit ($250,000 per depositor per bank) provides meaningful coverage
- For large issuers, IntraFi (formerly ICS and CDARS) deposit placement services can distribute deposits across multiple banks to maximize FDIC insurance coverage
- Concentration limits should be established to avoid excessive counterparty risk to any single bank
Reverse Repos:
- Executed through primary dealer banks with daily margin calls
- Collateral (US Treasuries) held in a segregated triparty custodial account
- Legal documentation (GMRA) with bankruptcy-remote provisions
Attestation and Audit Requirements
Monthly Attestation
The GENIUS Act requires monthly attestation by a registered public accounting firm. The attestation addresses:
- Reserve adequacy: Total reserve value equals or exceeds total outstanding stablecoins as of the attestation date
- Asset composition: Reserves are invested exclusively in eligible asset classes
- Segregation: Reserves are held in properly segregated accounts
Attestation Standards: Attestations are typically conducted under AICPA Attestation Standards (AT-C Section 205, Examination Engagements) or equivalent. For a detailed breakdown of attestation procedures, see our stablecoin audit and attestation guide. The accountant performs examination-level procedures, which provide a high level of assurance (similar to an audit opinion).
Leading Attestation Firms:
- Grant Thornton: Performs attestations for Circle (USDC reserves)
- WithumSmith+Brown: Previously performed attestations for Paxos
- BDO: Engaged by several stablecoin issuers for attestation services
- Deloitte/KPMG/EY/PwC: Capable but may be reluctant to engage stablecoin clients due to perceived reputational risk
Cost: $25,000-$75,000 per monthly attestation, or $300,000-$900,000 annually
Annual Audit
In addition to monthly attestations, the GENIUS Act and most other regulatory frameworks require annual audited financial statements:
- Conducted by a PCAOB-registered public accounting firm
- Financial statements prepared under US GAAP
- Full audit opinion on the financial statements
- Separate audit opinion on the reserve composition and adequacy (if not covered by the monthly attestation)
Cost: $200,000-$500,000 annually, depending on the complexity of the issuer’s operations and the size of the reserve
MiCA Audit Requirements
Under MiCA, ART issuers must:
- Have the reserve of assets independently audited every six months
- Publish the audit results on their website within three months of the audit date
- The audit must cover the composition, valuation, and segregation of reserve assets
Reserve Management Best Practices
Liquidity Management
Stablecoin issuers must maintain sufficient liquidity to honor redemption requests within the required timeframe (one business day under GENIUS Act, at any time under MiCA for EMTs). Liquidity management procedures should include:
- Liquidity buffer: Maintain at least 10-20% of reserves in demand deposits or overnight instruments that can be liquidated immediately
- Maturity laddering: Structure Treasury holdings so that a portion matures every week, providing regular liquidity inflows
- Stress testing: Model redemption scenarios including sudden large redemptions (e.g., 20-30% of outstanding stablecoins in a single day) and sustained outflows over multiple days
- Contingency funding plan: Pre-arranged credit facilities or repo lines that can be drawn upon if redemption demand exceeds liquid reserves
Yield Optimization
Within the constraints of eligible reserve assets, issuers can optimize yield:
- T-bill yield: As of early 2026, short-dated T-bills yield approximately 4-5%, providing significant revenue on large reserves
- Reverse repo rate: Overnight reverse repos yield the Federal Reserve’s administered rate, typically near the federal funds target
- Bank deposit rates: Negotiate market-rate interest on large demand deposits
- Reserve income is a primary revenue source for stablecoin issuers. Circle reported $1.7 billion in reserve revenue in 2023. Compliance with asset quality restrictions does not preclude meaningful yield generation.
Concentration Risk Management
- No more than 25% of reserves with any single bank counterparty
- Treasury holdings distributed across multiple maturity dates
- Reverse repo counterparties diversified across multiple primary dealers
- Geographic diversification of banking relationships where practicable
Compliance Monitoring
Daily Procedures
- Calculate total outstanding stablecoins across all supported blockchains
- Calculate total reserve value using mark-to-market prices for Treasury securities and face value for deposits
- Verify that reserves equal or exceed outstanding stablecoins
- Review redemption volumes and ensure adequate liquidity
- Execute any necessary reserve rebalancing transactions
Monthly Procedures
- Prepare reserve composition report
- Coordinate with attestation firm for monthly attestation
- Publish attestation report on the issuer’s website
- File required regulatory reports with federal/state regulator
- Review concentration limits and counterparty exposure
Quarterly Procedures
- Conduct liquidity stress testing
- Review and update reserve management policies
- Assess counterparty creditworthiness (bank deposit counterparties)
- Review custodial arrangements and sub-custodial exposure
- Evaluate reserve yield performance within compliance constraints
Technology for Reserve Management
Reserve Accounting Systems: Enterprise treasury management systems (Kyriba, FIS, or custom solutions) configured for stablecoin reserve tracking. Must integrate with banking systems, custodians, and the blockchain to maintain real-time reconciliation between reserves and outstanding token supply.
Blockchain Integration: Automated monitoring of stablecoin supply across all supported blockchains using blockchain data APIs (Alchemy, Infura, or direct node access). Supply monitoring must account for minting and burning transactions, cross-chain supply, and any tokens in transit.
Reconciliation: Automated daily reconciliation between blockchain supply data, custodian account statements, and internal reserve accounting records. Discrepancies trigger immediate investigation and resolution.
Cost: $100,000-$500,000 for technology setup, $50,000-$200,000 annually for maintenance and licensing.
For the GENIUS Act reserve requirements, see GENIUS Act compliance guide and GENIUS Act requirements. For the MiCA reserve framework, see MiCA EMT/ART compliance and MiCA stablecoin provisions. For audit requirements, see stablecoin audit compliance. For global stablecoin regulation, see stablecoin regulation overview. For consumer protection, see stablecoin consumer protection. For official guidance, see the Federal Register for US requirements and EBA stablecoin standards for EU requirements.