Last Updated on April 16, 2026 by Patrick Camuso, CPA
Quick answer (read this first):
What HIP-4 is: Hyperliquid’s outcome contract framework, announced in September 2025 and live on testnet as of February 2026, introduces binary prediction market instruments directly into Hyperliquid’s trading engine. Contracts settle at 0 or 1 in USDH, Hyperliquid’s native stablecoin, and share a margin account with the platform’s perpetual futures and spot positions.
The practical posture: HIP-4 outcome contracts require analysis across at least three independent tax questions before characterization can be established. Each layer introduces uncertainty for Hyperliquid prediction market tax that does not exist on centralized platforms like Kalshi. Traders with material HIP-4 activity should document their positions before mainnet launch, not after activity accumulates.
What Hyperliquid Is and What HIP-4 Does
Hyperliquid is a high-performance decentralized exchange running on its own Layer-1 blockchain, HyperCore. Perpetual futures, spot trading, and now outcome contracts execute and settle on Hyperliquid’s proprietary L1 with sub-second finality. The platform is not a CFTC-registered entity and has no KYC infrastructure for most users.
HIP-4, formally Hyperliquid Improvement Proposal 4, was submitted in September 2025 with Kalshi’s head of crypto among its co-authors. The proposal introduces outcome contracts as a new instrument category on HyperCore. On February 2, 2026, Hyperliquid announced the proposal’s acceptance and launched outcome trading on testnet, with BTC and HYPE binary markets available in USDH. Mainnet launch follows a two-phase approach. Phase 1 deploys curated canonical markets selected by the Hyperliquid team. Phase 2 opens permissionless deployment to any builder meeting a 1,000,000 HYPE staking requirement. As of April 2026, no mainnet launch date has been confirmed.
HIP-4 outcome contracts are binary instruments. A contract trades between 0.001 and 0.999, where the price reflects the market’s implied probability that a specified event occurs. If a trader buys a YES contract at 0.60 on a BTC price threshold event, they pay 0.60 USDH per contract. If the event resolves favorably, the contract settles at 1 and the trader receives 0.40 USDH profit. If it resolves against them, the contract settles at 0 and the 0.60 USDH collateral is lost. Contracts are fully collateralized. There is no leverage and no liquidation risk, which distinguishes them from Hyperliquid’s perpetual futures markets.
HIP-4’s defining structural feature is composability: outcome contracts run natively in the same margin account as a trader’s perpetual futures and spot positions. A trader can hold a YES outcome contract, a long BTC perpetual, and a spot ETH position in a single account with shared collateral. No other prediction market platform offers this integration, and it creates a tax complication no other prediction market platform produces.
Why U.S. Traders Need to Read This First
Hyperliquid explicitly geo-blocks U.S. users via its frontend. The platform’s Terms of Use prohibit access by U.S. persons regardless of citizenship or physical location. The underlying protocol, Hyperliquid’s L1, is permissionless and does not enforce this restriction at the blockchain level, the geo-block exists only at the website layer.
U.S. traders who access Hyperliquid through a VPN or by interacting directly with the protocol are doing so in violation of Hyperliquid’s Terms of Service and may face account restrictions or loss of access to funds. That is a legal problem with the platform, separate from taxes.
The tax problem exists regardless of how access occurred. U.S. persons are taxable on worldwide income. Trading on an offshore, geo-blocked protocol does not remove the reporting obligation. On-chain activity on Hyperliquid’s L1 is permanently recorded and accessible through blockchain analytics tools. The on-chain record does not distinguish between a trader who accessed the platform legally from outside the U.S. and a U.S. person who used a VPN.
Every U.S. trader who has interacted with Hyperliquid, including HIP-4 outcome contracts, has a tax obligation that exists independently of whether the platform issued any documentation, whether a VPN was used, and whether the frontend was technically accessible at the time.
Any U.S. trader interacting with Hyperliquid’s USDH stablecoin or conducting transactions on the HyperEVM must answer “Yes” to the digital asset disclosure question on Form 1040. A “No” answer when Hyperliquid on-chain activity exists is a representation that may be inconsistent with the blockchain record and creates exposure independent of the underlying income reporting.
The Three-Layer Tax Analysis
HIP-4 outcome contracts require working through three analytically distinct questions before characterization of gain or loss can be established. These layers are sequential. The analysis does not start with which characterization produces the lowest rate.
Layer 1: Outcome Contract Characterization
The first question is how the HIP-4 outcome contract itself should be characterized. This analysis follows the same sequential framework applicable to all prediction market contracts with realization under Section 1001, the wagering threshold under Section 165(d), the Section 1256 requirements if wagering does not apply, and the capital versus ordinary income analysis under Section 1221 if Section 1256 does not apply.
The wagering threshold requires contract-by-contract analysis based on the economic substance of the underlying event. HIP-4 contracts on BTC price thresholds or macroeconomic outcomes present a weaker wagering argument than contracts on sports outcomes. The nature of the underlying event is the primary analytical variable, not the platform or settlement currency.
Section 1256 Requirement 1 requires that a contract trade on a qualified board or exchange, which includes CFTC Designated Contract Markets. Hyperliquid is not a CFTC-registered entity. It has no DCM designation, no SEF registration, and no U.S. regulatory status under the Commodity Exchange Act. On Kalshi, the DCM registration satisfies Requirement 1 and the analysis proceeds to Requirements 2 and 3. That path does not exist for HIP-4. There is no regulatory foundation to begin the Section 1256 inquiry.
Where wagering treatment does not clearly apply and Section 1256 is unavailable, the remaining analysis is capital treatment under Section 1221 or ordinary income treatment under a contingent contract framework. Both are analytically coherent and currently defensible with proper documentation. Capital treatment requires a threshold determination that the contract constitutes a capital asset in the taxpayer’s hands, which is not automatic in all trading or business contexts. Ordinary income treatment under a contingent contract theory is the more conservative baseline position and does not carry the recharacterization risk that capital treatment does if the IRS later concludes the contracts are not capital assets. For a full analysis of the characterization frameworks applicable to prediction market contracts, see our Prediction Market Tax Guide.
Layer 2: USDH Settlement
HIP-4 contracts settle in USDH, Hyperliquid’s native stablecoin issued by Native Markets LLC. USDH is described as fully backed 1:1 by cash, cash equivalents, and U.S. Treasuries. As of publication, USDH is a newer stablecoin without the track record of USDC.
Where USDH maintains its peg, most practitioners treat settlement as equivalent to receiving USD. The taxable event is the contract disposition. The stablecoin is the settlement medium.
That said, USDH is a digital asset. It has a cost basis at the moment of receipt. Any subsequent transaction involving USDH such as a conversion to USD, a transfer, or use as collateral for additional positions is a separate taxable event that requires its own basis tracking and gain or loss calculation. If USDH ever trades away from its peg, any gain or loss on the USDH position itself is a recognized event independent of the underlying prediction market contract.
The practical obligation is to track basis in all USDH received and treat every subsequent movement of that USDH as a potential taxable event.
Layer 3: Cross-Margin Interaction with Perpetual Futures Positions
Because HIP-4 outcome contracts share a margin account and collateral pool with Hyperliquid’s perpetual futures and spot positions, traders who hold both outcome contracts and related perpetual positions may implicate the straddle rules under Section 1092.
Where a trader holds a HIP-4 outcome contract and an offsetting or related perpetual futures position in the same account, for example a YES contract on a BTC price threshold and a long BTC perpetual futures position on the same threshold, the IRS may characterize those positions as a straddle. Under the straddle rules, a loss on one leg is deferred to the extent of unrecognized gain in the offsetting position that remains open. The straddle analysis looks through the form of the positions to their economic relationship.
The straddle analysis requires a portfolio-level review of all open and closed positions across both the outcome contract book and the perpetual futures book for any period where both were active. That determination requires judgment applied to the full position history and cannot be automated from transaction exports alone.
Reporting and Documentation
Hyperliquid issues no tax documentation. There is no 1099-B, no 1099-DA, no 1099-MISC, and no profit and loss summary designed for tax reporting. Hyperliquid has no KYC process for most users and no mechanism to generate taxpayer-specific reporting. The IRS receives no third-party data on Hyperliquid activity.
Transaction reconstruction for U.S. tax purposes requires building a complete transaction history from Hyperliquid’s on-chain data using the platform’s own explorer and third-party analytics tools that support HyperCore’s L1. This reconstruction is more complex than Polymarket’s Polygon-based reconstruction because HyperCore is a proprietary Layer-1 with data structures distinct from Ethereum-compatible chains, and third-party tax software support for HyperCore is limited as of publication.
The reconstruction must capture outcome contract activity: opening purchases with cost basis in USDH, any sales or closings before settlement, and final settlement receipts with the resolution price and timestamp. Each outcome contract is a separate tax lot requiring its own acquisition date, acquisition cost, disposition date, and disposition proceeds for the applicable characterization framework.
USDH movement must be tracked separately, including all receipts from settled contracts, transfers into and out of the margin account, and any conversions of USDH to other assets or fiat currencies. Where USDH is treated as property rather than USD equivalent, each movement requires basis tracking.
Cross-position activity must also be captured: any periods where outcome contracts and perpetual futures positions were simultaneously open in the same account, and any position changes that may have affected the straddle analysis.
Any U.S. person who held, received, or transacted in USDH or any other digital asset through Hyperliquid during the year must answer “Yes” to the digital asset disclosure question on Form 1040.
How HIP-4 Compares to Kalshi and Polymarket
For CFTC registration, Kalshi holds DCM status, which is a necessary but not sufficient condition for Section 1256 analysis. The regulatory status of other platforms continues to evolve and must be evaluated based on the specific platform and time period at issue. Hyperliquid has no CFTC registration.
For settlement currency, Kalshi settles in USD. Polymarket settles in USDC on Polygon. Hyperliquid settles in USDH, a newer native stablecoin without the track record of USDC. The stablecoin analysis adds complexity regardless of peg stability.
For tax reporting, Kalshi issues limited 1099-series forms for certain transactions. Polymarket issues nothing. Hyperliquid issues nothing. For transaction reconstruction, Kalshi provides CSV exports of contract-level activity. Polymarket requires Polygon blockchain reconstruction. Hyperliquid requires HyperCore L1 reconstruction using Hyperliquid-specific explorer tools with limited third-party tax software support as of publication.
For professional assistance with Hyperliquid HIP-4 transaction reconstruction and characterization analysis, our prediction market tax reporting services are available.
Frequently Asked Questions: Hyperliquid HIP-4 Taxes
What is Hyperliquid HIP-4 and how is it different from Kalshi or Polymarket?
HIP-4 is Hyperliquid’s outcome contract framework, introducing binary prediction market instruments directly into Hyperliquid’s trading engine. Contracts settle at 0 or 1 in USDH, Hyperliquid’s native stablecoin, and operate in the same margin account as the platform’s perpetual futures and spot positions. The key distinctions from Kalshi and Polymarket are that Hyperliquid has no CFTC registration, settles in a newer stablecoin rather than USD or USDC, issues no tax documentation, and allows outcome contracts to be held alongside perpetual futures in a shared margin account. That composability creates straddle risk not present on any other prediction market platform.
Does Section 1256 apply to HIP-4 outcome contracts?
No. Section 1256 requires, at minimum, that a contract trade on a qualified board or exchange, which includes CFTC Designated Contract Markets. Hyperliquid has no CFTC registration and no DCM designation. The first statutory requirement for Section 1256 treatment is not met. Section 1256 treatment is not available for HIP-4 outcome contracts regardless of how the contracts are structured or how the underlying events are characterized. This is a more definitive conclusion than for Kalshi, where the DCM registration satisfies Requirement 1 but Requirements 2 and 3 remain open questions under current law.
Do I have to report HIP-4 activity even if I used a VPN to access Hyperliquid?
Yes. U.S. persons are taxable on worldwide income from all sources regardless of how access occurred. Using a VPN to bypass Hyperliquid’s geo-block does not remove the tax reporting obligation. The on-chain record of your activity exists permanently on Hyperliquid’s L1 and is accessible through blockchain analytics tools. The VPN creates a separate Terms of Service and potential legal issue with the platform. The tax obligation exists independently of both.
How does USDH settlement affect my tax reporting?
USDH settlement creates a second layer of analysis on top of the outcome contract characterization. Where USDH maintains its peg and is treated as equivalent to USD, the practical tax consequences are limited. The taxable event is the contract disposition, and USDH is the settlement medium. Where USDH depegs, the stablecoin holding itself produces a separate taxable gain or loss. Where USDH is held in the margin account and used for further trading, basis tracking in USDH is required as a distinct asset. Traders should document their basis in USDH received from settled contracts and track any subsequent movements.
How do I reconstruct my Hyperliquid HIP-4 transaction history for tax purposes?
Hyperliquid provides no standardized tax documentation. Transaction history must be reconstructed from HyperCore L1 on-chain data using Hyperliquid’s own explorer and third-party analytics tools that support the HyperCore L1 data structure. The reconstruction must capture outcome contract acquisitions, dispositions, and settlements with cost basis in USDH; USDH movements into and out of positions; and the full cross-position history for straddle analysis. Third-party crypto tax software support for HyperCore is limited as of publication. Manual reconstruction from on-chain data is the primary available method for most traders.
What is the digital asset disclosure requirement for Hyperliquid traders?
Any U.S. taxpayer who held, received, transferred, or otherwise interacted with USDH or any other digital asset through Hyperliquid during the tax year must answer “Yes” to the digital asset disclosure question on Form 1040. A “No” answer when Hyperliquid activity exists is inconsistent with the on-chain record and creates exposure independent of the underlying income reporting.
Is it too early to think about HIP-4 taxes if mainnet has not launched yet?
The pre-mainnet period is the right time to establish the analytical framework, not after activity has accumulated. Working through outcome contract characterization, USDH settlement treatment, and the cross-margin straddle evaluation is easier before positions are held than after a full year of activity has developed. Characterization decisions made at the outset and documented contemporaneously are more defensible under examination than positions reconstructed after the fact. Traders who plan to use HIP-4 on mainnet should establish their framework now.
