Aster

Aster fees combine market-specific trading charges and distinct perpetual holding costs

Updated - 11-Oct-2026

Aster fees depend on the trading product, market category, and whether an order adds or removes liquidity. Order-book perpetuals have zero maker fees, with a 0.04% base taker rate for General crypto contracts and separate schedules for Group B and RWA markets. Spot trading, Shield Mode, and 1001x use different charging rules. Funding adds a holding-cost component, whose timing and calculation depend on the perpetual product.

Order-book markets and their rate schedules

Aster separates its order-book fee schedules by market category, so the contract's underlying exposure and quote asset help determine the applicable trading rate. General crypto and Group B contracts have different taker schedules. Contracts based on real-world assets, or RWA, carry a uniform taker rate across VIP levels. USD1-quoted contracts retain a distinction between crypto exposure and RWA exposure.

View full-size image

The RWA taker rate of 0.0125%, equivalent to 1.25 basis points, took effect on September 7, 2026.

Quote currency alone does not establish a cheaper perpetual rate. The USD1 crypto schedule uses the General base taker rate, while USD1 RWA contracts follow RWA pricing. Spot has its own maker commission. Shield Mode and 1001x attach separate charging rules to their position models.

How does a fill become a maker or taker charge?

A fill receives the maker rate when a resting order supplies liquidity, or the taker rate when it immediately consumes existing liquidity. A limit instruction can incur taker fees if its price matches an order already resting in the book. The limit label controls price, while the execution determines the liquidity role.

View full-size image

Order-book perpetual commission equals executed notional multiplied by the applicable fee rate. Filled quantity, contract size, and execution price determine that notional. Initial margin supports the exposure and follows the leverage setting. Changing leverage without changing the executed exposure does not reduce the notional on which the commission rests.

Post Only rejects a limit order that would match immediately. It protects maker execution while leaving the order subject to available matching liquidity.

Partial fills have their own prices and commissions. Entry and exit orders can also have different execution roles and notionals. Account trade records identify the filled quantity, maker status, commission amount, and commission asset. Grid trading creates repeated executions; Grid 2.0 reports trading fees and funding separately, allowing those costs to remain distinct from matched profit.

VIP eligibility and fee-payment balances

VIP qualification affects eligible taker rates through trading activity and token holdings, while fee-payment balances affect how the resulting commission settles. VIP status requires both qualifying rolling trading volume and average ASTER holdings. Assessment runs daily at 23:59 UTC using rolling 14-day spot and perpetual volume. Since June 10, 2026, RWA maker volume counts 10 times toward VIP fee tiers. The holdings measure combines daily averages from the Spot account, Perpetual account, and Aster Staking balance.

Eligible Spot and Pro trading fees paid in ASTER receive a 5% discount. Spot requires an ASTER balance in the Spot account and the Pay fee in ASTER setting enabled. Pro applies AFEE fee credits automatically; its fee-payment model uses available ASTER when AFEE is insufficient. AFEE covers trading commission and cannot pay funding, liquidation fees, or position margin.

View full-size image

When does an order-book position incur funding?

Order-book perpetual funding settles at the contract's funding time for positions held through the collection window, which can have a 15-second timing deviation; the default interval is eight hours, although contracts can use different intervals. Aster can adjust intervals, caps, and floors in response to market conditions.

Order-book perpetual funding passes between long and short traders. Positive rates charge longs and credit shorts; negative rates reverse that direction. Aster does not charge or receive this transfer. The funding amount equals position size multiplied by mark price and the applicable funding rate.

Funding uses mark-price notional, while trading commission uses execution notional. Rates with different settlement intervals describe different holding periods. Comparing cumulative funding requires matching those periods and accounting for the actual rates and position values at each settlement.

Shield Mode and 1001x charging rules

Shield Mode offers profit-sharing and flat-fee pricing, so a charge based on profit uses a different denominator from a charge based on position notional. The standard profit-sharing schedule takes 15% to 20% of a profitable position's profit; a losing position incurs no profit-sharing charge. The standard flat-fee schedule charges 0.03% of position notional on opening and closing. An applicable temporary fee waiver can override those opening and closing commissions. Funding and slippage remain separate cost components.

Shield funding follows its own open-interest imbalance formula, and Aster collects the charge under that model. Payments arise at hourly settlement boundaries. The funding parameter, floor, and cap can change with market conditions. Selecting profit-sharing changes the commission basis while the hourly funding mechanism continues to govern the cost of maintaining Shield exposure.

The standard 1001x crypto schedule charges 0.08% on opening and 0.08% on closing, calculated against entry and exit notional respectively. 1001x forex perpetuals charge 0.02% on opening and closing and are available only on BNB Chain. An opening-only execution fee covers network costs and adds to the trading commission. The execution schedule specifies $0.50 on BNB Chain and $0.20 on Arbitrum. These network-specific charges belong to 1001x and do not describe the order-book maker or taker schedule.

The 1001x high-leverage fee model uses zero opening trading commission for positions at 500x, 750x, or 1001x leverage, and applies a dynamic closing fee. The closing rate is the larger of two values: realized profit or loss multiplied by the share rate and divided by opening notional, and the minimum closing rate. The documented default share rate is 15%, with an initial minimum closing rate of 0.03%. The opening execution fee remains separate. Holding costs combine an open-interest imbalance component with a borrow rate. Funding accumulates per block, enters unrealized profit and loss, and affects the liquidation price.

Slippage, transfers, and capital requirements

Slippage changes the execution price independently of the commission rate, while margin requirements determine the capital that supports the position. Order-book fills reflect available liquidity at execution. Shield uses dynamic slippage based on liquidity and open interest. The 1001x model uses fixed or dynamic slippage by pair; its dynamic calculation also considers new position size and pool exposure. A lower commission can coincide with a less favorable fill price.

Initial margin is capital allocated to support leveraged exposure. An adverse difference between the order price and mark price can require an opening-loss buffer in addition to that margin. Pro withdrawals can deduct network gas costs from the withdrawal amount. Forced settlement can also incur liquidation fees under the contract's Trading Rules. A maker exit can reduce commission relative to a taker exit, while an unclosed position remains subject to its contract's funding rules.