Understanding HIP-3 Fees, Funding & Margin

Many traders focus on price and leverage but overlook the costs that quietly erode their returns. On HIP-3, those costs are more nuanced than on a single exchange — different builders charge different fees, use different collateral with different structural discounts, and funding rates vary by market and venue.

This guide breaks down the three cost layers every HIP-3 trader should understand: trading fees, funding rates, and margin requirements.

Trading fees

Every trade on HIP-3 incurs a fee split between the builder (50%) and the Hyperliquid protocol (50%). The base rates are the same across all builders, but multiple modifiers can push your actual cost significantly higher or lower.

Base rates

A taker fee of 0.045% means a $10,000 market order costs $4.50 in fees. A maker fee of 0.015% means a $10,000 limit order costs $1.50 before builder-specific modifiers.

Builder fee scale

Each builder sets a deployerFeeScale that adjusts the base rates:

• Scale < 1 — the builder is offering a discount to attract volume.
• Scale = 1 — standard fees apply.
• Scale > 1 — the builder charges a premium, usually because the collateral provides extra value (like USDe yield on HyENA at ~1.11x).

The fee scale is applied multiplicatively to base rates before other discounts.

Aligned quote asset discount

Hyperliquid incentivizes adoption of native and aligned stablecoins by offering structural fee discounts to builders that use them as collateral:

• Taker fees reduced by ~20% for aligned quote assets
• Maker-side economics can improve for aligned quote assets depending on the fee configuration shown by the venue

The current aligned quote assets are USDH and USDe. This means builders using USDH (Kinetiq, Ventuals, Felix) and USDe (HyENA) have a built-in cost advantage over USDC (Trade XYZ) and USDT (Dreamcash) builders at the default fee tier shown on Hip3Hub.

Growth Mode

Growth Mode is the most powerful fee reduction available on HIP-3. When a market is in Growth Mode, fees are reduced by up to 90% — making trading nearly free.

Growth Mode eligibility:

• Eligible: stocks, indices, commodities, forex, and most non-crypto assets
• Not eligible: crypto assets, gold (GOLD, XAU, PAXG)

Growth Mode is designed to bootstrap liquidity in newer traditional asset markets. For a trader buying TSLA or EURUSD perpetuals, the effective taker fee in Growth Mode can drop below 0.005% — an order of magnitude cheaper than standard rates.

Referral discounts

Traders using a referral link receive an additional percentage reduction on fees. This stacks with aligned quote discounts and Growth Mode. The exact referral discount varies by program.

Fee comparison across builders

Putting all the modifiers together, here is how actual trading costs compare:

The key insight: USDH builders have the lowest base fees thanks to the aligned quote discount. But Growth Mode can make any builder extremely cheap for eligible traditional asset markets — even those without aligned discounts.

Funding rates

Funding rates are the periodic payments between long and short traders that keep perpetual contract prices anchored to spot. They are the biggest hidden cost (or income) for anyone holding positions beyond a few hours.

How funding is calculated

The funding rate is derived from the difference between the perpetual contract price (mark price) and the oracle price (spot reference):

• Mark price > oracle price → positive funding → longs pay shorts
• Mark price < oracle price → negative funding → shorts pay longs

The payment amount for each period is:

Funding payment = Position size × Funding rate

For example, a $50,000 long position with a funding rate of +0.01% pays $5 per funding period.

Settlement frequency

Most HIP-3 markets settle funding every 8 hours (three times per day). But some builders modify this:

• Trade XYZ uses reduced funding rate scaling on many markets, which can lower holding costs relative to the standard setup.
• Ventuals uses non-linear funding tiers for Pre-IPO markets, reflecting the unique demand dynamics of private company valuation trades.

Funding rate impact by holding period

Funding as a strategy

When funding is consistently positive (longs paying shorts), short-side traders collect funding income. Some traders build "funding farming" strategies:

1. Identify a market with persistently high positive funding.
2. Open a short perp position to collect funding.
3. Hedge the directional risk by holding the spot asset (or an equivalent long position elsewhere).
4. Profit = funding income minus hedging costs and trading fees.

This works best on high-volume markets with stable funding rates. On HIP-3, funding rate differences between builders trading the same asset (like TSLA on Trade XYZ vs. Felix) can also create arbitrage opportunities.

Margin and collateral

Margin is the collateral you post to back your positions. On HIP-3, your margin choice is determined by your builder choice — each builder accepts exactly one collateral type.

The four collateral types

Collateral as a cost factor

Your collateral choice affects costs in three ways:

1. Fee discounts — USDH and USDe get aligned quote discounts (see above).
2. Yield — USDe can earn yield. This can reduce your cost of capital if you keep collateral idle between trades.
3. Opportunity cost — idle USDC earns nothing on HIP-3. The same USDC in a lending protocol might earn 3–5%. Factor this into your total cost of trading.

Isolated vs cross margin

How your margin is allocated directly impacts your risk and capital efficiency:

Isolated margin allocates a fixed amount to each position. If the position is liquidated, you lose only the allocated margin — your other positions and remaining balance are safe. This is the safer default for most traders.

Cross margin shares your entire account balance across all positions. Unrealized gains on one position can support the margin requirements of another. This is more capital-efficient but carries cascade risk — a large loss on one position can trigger liquidation across your entire account.

Cross margin on HIP-3

Cross margin support has been discussed for HIP-3, but the exact rollout and account-mode constraints may change as Hyperliquid updates the feature set. The rough shape currently discussed is:

The most impactful implication: Unified Account with USDH lets you cross-margin positions across three builders (Kinetiq, Ventuals, Felix) — a significant capital efficiency advantage over USDC or USDT, which are each locked to a single builder.

Leverage across builders

Maximum leverage varies by builder and asset:

Remember: higher max leverage does not mean you should use it. Your liquidation price tightens proportionally with leverage. At 50x, a 2% adverse move liquidates your position.

Optimizing your trading costs

Here are practical strategies to minimize your all-in costs on HIP-3:

Pick the right collateral — if you have flexibility, USDH gives you aligned fee discounts and access to three builders. USDe adds yield on top. USDC and USDT are convenient but structurally more expensive.

Use Growth Mode markets — for traditional assets (stocks, indices, FX, non-gold commodities), Growth Mode cuts fees by up to 90%. This applies to all builders equally.

Use limit orders — maker orders receive a rebate instead of paying a fee. On aligned builders, the maker rebate is boosted by 50%. Disciplined limit order placement can turn fees from a cost into an income stream.

Monitor funding before entering — check the current and 7-day average funding rate on Markets. If funding is strongly negative and you want to go long, you will earn funding instead of paying it.

Match holding period to costs — for short-term trades, fees dominate and funding is irrelevant. For long-term positions, funding dominates and fees are a rounding error. Optimize accordingly.

Compare builders for overlapping assets — assets like TSLA and GOLD are available on multiple builders. Use the asset detail pages to compare fees, funding, and liquidity across venues before trading.