# Fees

A complete breakdown of every fee you pay when using Zirodelta.

## Builder fees (Zirodelta)

Zirodelta collects a builder fee on every filled order it routes through Hyperliquid. You authorize this once via `approveBuilderFee`. After that, it applies automatically to every order.

| Market type | Builder fee    |
| ----------- | -------------- |
| Perpetuals  | 5 bps (0.05%)  |
| Spot        | 50 bps (0.50%) |

Builder fees are collected by Zirodelta as a layer on top of Hyperliquid's own taker fees. They are disclosed in the order panel before you trade.

> **Note:** Builder fees only apply to **taker** orders (market orders, IOC limits). If you place a maker limit order that rests on the book and is filled by a taker, the builder fee mechanics still apply at the time of the fill, but the structure follows Hyperliquid's taker fee logic.

## Hyperliquid taker fees

Hyperliquid charges its own taker fees independent of Zirodelta. These vary by your account's 14-day volume tier. Current Hyperliquid fee tiers can be found in the Hyperliquid native UI.

As a reference point, standard Hyperliquid taker fees are around 2.5–3.5 bps for most accounts. Zirodelta's 5 bps builder fee sits on top of this.

## Pro subscription

| Item             | Cost                                                        |
| ---------------- | ----------------------------------------------------------- |
| Pro subscription | $10 USDC per 30-day period                                  |
| Payment method   | On-chain `usdSend` to Zirodelta treasury address            |
| What it unlocks  | Autopilot (delta-neutral automation), automation strategies |

Payment is verified on-chain. No recurring billing or stored payment methods. Each 30-day period must be renewed manually.

## Lending vault fees (launching soon)

The Lending Vault charges a spread between the borrow rate Autopilot traders pay and the supply rate depositors earn.

| Fee            | Description                                                                |
| -------------- | -------------------------------------------------------------------------- |
| Vault spread   | Zirodelta margin on borrowing cost: exact spread disclosed at vault launch |
| Withdrawal fee | None                                                                       |
| Deposit fee    | None                                                                       |

Depositor yield (after spread) is projected at 8–25% APY depending on utilization. The vault spread is Zirodelta's passive revenue from vault activity. It scales with TVL and borrow demand, not with individual transaction sizes.

## Referral program

Earn cash-back on builder fees generated by traders you refer to Zirodelta.

| Tier   | Commission                               | Your own trading volume threshold                     |
| ------ | ---------------------------------------- | ----------------------------------------------------- |
| Base   | 30% of builder fees from referred volume | $0 (default when you create a code)                   |
| Silver | 40%                                      | $100,000 (or $10,000 with an active Pro subscription) |
| Gold   | 50%                                      | $500,000                                              |

Tier is determined by your own cumulative HL trading volume, not the volume referred. Payouts are in USDC. Minimum payout threshold: $1. Claimable from the Portfolio section.

## No fees

The following have **no fees** on Zirodelta:

* Connecting your wallet
* Reading Farm Score, CVD, or OI Delta data
* Viewing the funding rate chart or market list
* Approving agent wallet or builder fee (you pay only the Hyperliquid L1 transaction cost, which is essentially zero)
* Withdrawing from the trading account

## Fee summary

| Action                       | Zirodelta fee    | Notes                               |
| ---------------------------- | ---------------- | ----------------------------------- |
| Perp trade                   | 5 bps            | + Hyperliquid taker fee             |
| Spot trade                   | 50 bps           | + Hyperliquid taker fee             |
| Pro subscription             | $10 USDC/30 days | On-chain payment                    |
| Vault deposit                | 0                | No fee                              |
| Vault withdrawal             | 0                | No fee                              |
| Vault spread                 | TBD at launch    | Applied to borrow rate, not deposit |
| approveAgent (one-time)      | 0                | On-chain signature, no token cost   |
| approveBuilderFee (one-time) | 0                | On-chain signature, no token cost   |


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