# VOOI\_ULTRA:tradingFees

This page outlines the trading fee structure for venues currently supported on **VOOI Ultra**: [https://ultra.vooi.io](https://ultra.vooi.io/).

Trading fees are an essential part of how DeFi operates, compensating liquidity providers and ensuring healthy market balance. Each supported venue has its own fee model, while VOOI provides transparent access to these structures for better cost awareness.

Please note: all fees are determined by the respective venue and are subject to change.

## Lighter

Trading fees apply **both when opening and closing positions** and vary dynamically with trading volume:

* **Maker:** 0 bps (0.00%) – adds liquidity and waits to be matched.
* **Taker:** 0 bps (0.00%) – executes immediately at market price.

For more details, refer to the [Lighter documentation](https://docs.lighter.xyz/perpetual-futures/fees).

## Aster

Trading fees apply **both when opening and closing positions** and vary dynamically with trading volume:

* **Maker:** 0 bps (0.00%) – adds liquidity and waits to be matched.
* **Taker:** 4 bps (0.04%) – executes immediately at market price.

For more details, refer to the [Aster documentation](https://docs.asterdex.com/product/aster-perpetual-pro/fees-and-specs/fees).

## Hyperliquid

Trading fees apply **both when opening and closing positions** and vary dynamically with trading volume:

* **Maker:** 0 – 1.5 bps – adds liquidity and waits to be matched.
* **Taker:** 0 – 4.5 bps – executes immediately at market price.

For more details, refer to the [Hyperliquid documentation](https://hyperliquid.gitbook.io/hyperliquid-docs/trading/fees).

## VOOI Fee Approach

While VOOI strives to offer no additional fees for trading on supported perpetual DEXs, certain DEXs may still incur additional charges. Referral and rebate mechanisms for VOOI Ultra are planned for  future releases and may help partially offset these costs. Additional details will be shared separately.

### VOOI Fees

**Trading through VOOI MCP is not subject to VOOI fees.** Venue trading fees may still apply according to the selected venue’s fee schedule.

A small additional fee is applied on top of venue trading fees while trading via VOOI Ultra App:

**Lighter**

* **VOOI** charges a flat **0.015% (1.5 bps)** fee for taker and maker orders.

**Aster**

* **VOOI** charges a flat **0.015% (1.5 bps)** fee for taker and maker orders.

**Hyperliquid**

* **VOOI** charges a flat **0.015% (1.5 bps)** fee for taker and maker orders.


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