What Aster Actually Costs: Trading Fees, Broken Down slug: aster-trading-fees-explained

Aster charges 0% maker and 0.04% taker on USDT-margined perpetual contracts, with maker fees having been zeroed across perp trading on 2 February 2026. That figure is the one every comparison table quotes, and for anyone holding positions longer than a few hours it is rarely the largest cost. The interface you trade through changes the commission by a factor of four: Simple mode charges 0.08% to open and 0.08% to close, plus a flat execution fee. Market orders are margin-sized against a 0.05% buffer above the best ask. And funding on a position held for a month routinely exceeds the round-trip commission by an order of magnitude. This breakdown works through every line, using Aster's published documentation, and ends with the same $10,000 round trip priced three different ways.

TL;DR

• USDT perps: 0% maker, 0.04% taker. USD1 perps: 0% maker, 0.005% taker. Stock perps: 0% maker, 0.009% taker.
• Paying fees in $ASTER cuts perp commissions by 5%; VIP tiers cut taker fees further, based on 14-day rolling volume and average $ASTER holdings.
• Simple mode (the 1001x interface) is a separate price list: 0.08% open, 0.08% close, plus $0.50 execution fee on BNB Chain or $0.20 on Arbitrum.
• At 500x, 750x and 1001x there is no opening fee — a dynamic closing fee is charged against realized PnL instead, with a 0.03% floor.
• Pro mode sizes margin for a long market order against the best ask plus 0.05%. Simple mode applies real slippage: 0.01% fixed on BTC, ETH and forex pairs, depth-based elsewhere.
• Funding is paid trader-to-trader, not to Aster. Held for 30 days at a sustained 0.01% per 8 hours, it costs roughly 0.9% of notional.
• Liquidation carries an Insurance Clearance Fee, and negative balances must be cleared before you can withdraw.

The published fee schedule

Aster's fee structure varies by what the contract settles in rather than by which asset it tracks:

Fees apply to nominal value rather than to margin, which is the detail that trips up leveraged traders most often. Nominal value is contracts multiplied by transaction price, so a 0.1 BTC market buy filled at $80,000 has a nominal value of $8,000 and costs 8,000 × 0.04% = 3.20 USDT in commission — regardless of whether that position was opened with $8,000 of margin or with $400 at 20x. Leverage does not reduce the fee; it multiplies the notional the fee is charged on.

Aster has periodically run promotional windows setting stock perpetual fees to zero on both sides, so the 0.009% figure is the standing schedule rather than a guarantee of what you will be charged this week. Check the interface before sizing a strategy around any of these numbers.

Two ways to pay less

Depositing $ASTER into your perpetual wallet lets the token cover trading fees automatically and applies a 5% discount to perp commissions. The VIP program layers on top, reducing taker fees for both spot and perps, and it is assessed daily at 23:59 UTC against two conditions that must both hold: rolling 14-day trading volume across spot and perps, and average $ASTER holdings computed from hourly balance snapshots across your spot, perpetual and staking accounts. Holding the token without the volume, or trading the volume without the token, leaves you outside the tier.

Registered market makers sit on a separate schedule again, with taker fees down to 1.6 basis points and maker rebates as favourable as −0.50 bps, gated behind proof of at least $100 million in monthly futures volume and quoting obligations on spread, size and order lifetime.

Simple mode is a different price list

Aster runs two distinct interfaces, and treating them as one product is the most expensive mistake available on the venue. Pro mode is the order-book interface the fee table above describes. Simple mode — the 1001x interface — prices positions against a liquidity pool rather than a book, and charges accordingly:

At 500x, 750x and 1001x leverage the model changes again: no opening fee is charged, and the closing fee is calculated dynamically from realized PnL — a share rate applied to profit, divided by notional, with a 0.03% floor. A position closing with $100 of profit at a 15% share rate on $600 notional pays max((100 × 15%) / 600, 0.03%), which resolves to the floor. Liquidation absorbs this closing fee inside the liquidation loss rate rather than charging it separately.

Simple mode's funding also works differently from the order-book side, accruing every block against a borrow rate that scales with position size and holding period, calculated from a base interest rate derived from two-week historical volatility. Because it accrues continuously instead of at fixed settlement points, a trade closed within minutes pays almost nothing, while one carried across several days keeps paying the whole time it is open.

What a market order ties up before commission

Aster does not size a market order's margin against the price on your screen. It estimates an entry price first — for a long, the best ask plus 0.05%; for a short, the higher of the best bid and the mark price — and computes initial margin from that estimate. The 0.05% is a sizing buffer rather than a commission, and the fill itself is set by the book you cross, so on a deep BTCUSDT market the realised difference is usually smaller than the buffer suggests. What it does change reliably is the free collateral an order requires: a $10,000 long at 20x has its margin computed against roughly $10,005 of notional, and several simultaneous entries compound that gap.

The real execution cost in Pro mode is the spread you cross, which the order book decides rather than the fee schedule. Aggregated depth keeps price impact small on majors and widens it on thin listings, so a strategy that market-buys illiquid pairs pays more in impact than it will ever pay in commission.

Aster also applies open loss to the margin required at entry. If the mark price sits below your long order price, the difference is charged against your available balance on top of initial margin, so a long order needs more free collateral than a short of identical size in the same conditions. Aster's own worked example puts 1 BTC at 20x with a $102,990 order price against a $102,988.4 mark: initial margin of 5,149.50 plus 1.6 of open loss, against 5,149.50 flat for the equivalent short. This is not a fee — the amount is not paid to anyone — but it changes how much capital an order actually ties up, which matters when several positions open at once.

Funding: the line that usually dominates

Funding is a periodic payment exchanged between long and short holders to keep the perpetual near its underlying spot price. Aster neither charges nor receives it; the entire amount transfers between traders. The rate is computed as the average premium index plus a clamped interest-rate term, divided by 8/N where N is the funding interval, with the baseline interest rate at 0.01% for all contracts except BNBUSDT, which is set to zero. The premium index is recalculated every five seconds from impact bid and ask prices — the average price at which a fixed notional could actually be filled against current depth — so a thin book produces a larger premium and a larger funding payment.

Aster's default interval is 8 hours, with some pairs moved to hourly and the exchange reserving the right to adjust the floor, cap and interval during extreme volatility. One operational quirk deserves attention from anyone timing exits: there is a 15-second deviation between the actual time and when funding is charged, so a position opened at 16:00:05 UTC may still be billed for that interval.

A position held for 30 days at a sustained +0.01% per 8 hours costs roughly 0.9% of notional; at +0.03% per 8 hours, roughly 2.7%. On $10,000 of notional that is $90 and $270, against $8.00 for a full taker-to-taker round trip on the same size. Funding fees deduct from the perpetual account balance, and if that balance is short, they come out of position margin — moving the liquidation price against you while the position is still open.

What liquidation and withdrawal cost

Forced liquidation triggers when margin — initial collateral plus realized and unrealized PnL — falls below the maintenance requirement, measured against mark price rather than last price. Aster cancels all open orders, submits a single large immediate-or-cancel order to reduce the position, and if margin remains insufficient after accounting for realized losses and liquidation fees, closes the remainder at the bankruptcy price and hands the position to the insurance fund. Part of the liquidation fee goes to that fund and appears in your history as an Insurance Clearance Fee. Aster's documentation recommends keeping the margin ratio below 80% rather than treating the 100% threshold as a target, and notes that smaller positions are more likely to be liquidated in full because margin tiering gives larger positions a partial-reduction path.

If liquidation leaves a negative balance, Aster may cover it from the insurance fund, but only where all of four conditions hold: the balance is in a USDT perpetuals account, no cross or isolated positions remain open, the shortfall is no greater than 5,000 USDT, and no funds were transferred in afterwards to offset it.

Withdrawals themselves carry no flat fee in Aster's published documentation — you select a network and token, approve the transfer in your wallet, and pay that chain's gas. The constraint worth planning around is that any negative balance must be cleared first, either by rebalancing (which appears in your history as an auto-conversion) or by depositing the exact shortfall. Since Aster settles in USDT while accepting multiple assets as collateral, realized losses, funding and commissions can all leave a token balance negative and block a withdrawal until it is resolved.

The same trade, priced three ways

A $10,000 notional BTCUSDT position, opened and closed once:

Maker discipline is worth more on Aster than on almost any centralized venue, because the maker side is zero rather than merely cheap: every fill placed as a resting limit order instead of a market order removes 4 basis points from the bill, and a strategy that fills exclusively as maker pays Aster nothing at all in commission. Over anything longer than a day or two, though, funding becomes the dominant term, and the venue advertising the lowest commission stops being the cheapest place to hold the position.

What this means when a bot is doing the trading

Automation changes which line of the bill dominates. A grid strategy generates many small fills, so a 4-basis-point taker charge repeated dozens of times a week matters far more than it does for someone opening two positions a month, and a grid whose orders rest on the book instead of crossing the spread pays close to nothing in commission. Averaging strategies run the other way round — fewer fills, positions carried for days or weeks — which puts funding at the centre of the calculation and makes the funding direction on a given pair more relevant than the fee tier you happen to sit in.

Bitsgap runs GRID, DCA and COMBO bots on Aster through a trade-only API key, charges a flat subscription with no per-trade commission of its own, and passes exchange fees through untouched — so the numbers above are the numbers you pay. Demo mode runs against live prices and backtesting covers up to 365 days by plan, which is where a fee-and-funding assumption gets tested before capital is committed rather than after.

Model the full cost before you fund a position

Connect Aster with a trade-only key, run a GRID, DCA or COMBO configuration in demo mode against live prices, and check what commissions and funding do to the result across a full cycle. The 7-day Pro trial covers every bot type and every connected venue.

FAQ

What are Aster's trading fees in 2026? Aster charges 0% maker and 0.04% taker on USDT-margined perpetuals, 0% maker and 0.005% taker on USD1-margined perpetuals, and 0% maker and 0.009% taker on stock perpetuals. Maker fees across perp trading were set to zero on 2 February 2026. Simple mode, the 1001x interface, uses a separate schedule of 0.08% to open and 0.08% to close.

Does Aster really charge zero maker fees? Yes, on perpetual contracts. Limit orders that rest on the book and are filled by someone else carry no commission. The rate applies at the standard tier, without requiring VIP status or market-maker registration.

How can I reduce Aster trading fees? Trade as a maker wherever the strategy allows, since that side is zero. Deposit $ASTER into the perpetual wallet to pay fees with the token and take 5% off perp commissions. Qualify for a VIP tier, which requires both rolling 14-day volume and an average $ASTER holding balance, assessed daily at 23:59 UTC.

Is Aster cheaper than centralized exchanges? On headline commission for perpetuals, generally yes — a zero maker rate is below what most major centralized venues offer at standard tiers. Total cost depends on funding and execution quality rather than commission alone, and funding on a position held for weeks usually exceeds everything paid in fees.

How much does funding cost on Aster? Funding is exchanged between long and short traders; Aster takes none of it. The default interval is 8 hours, with some pairs hourly. A position held for 30 days at a sustained 0.01% per 8 hours costs approximately 0.9% of notional, and at 0.03% per 8 hours approximately 2.7%.

Why did my Aster market order need more margin than I expected? Aster estimates the entry price before sizing margin: long market orders are computed against the best ask plus 0.05%, short market orders against the higher of the best bid and the mark price. An order placed against an unfavourable mark price also incurs open loss, which is charged to available balance on top of initial margin. Neither is a commission — both increase the collateral the position ties up at entry.

What does it cost if my Aster position is liquidated? Part of the liquidation fee is allocated to Aster's insurance fund and appears in your transaction history as an Insurance Clearance Fee. If liquidation leaves a negative balance, the insurance fund may cover it, but only for USDT perpetual accounts with no open positions, a shortfall of 5,000 USDT or less, and no funds transferred in afterwards.

Does Aster charge a withdrawal fee? Aster's documentation publishes no flat withdrawal fee — you select the network and token and approve the transfer from your wallet, paying that chain's gas. Any negative balance must be resolved first, either by rebalancing or by depositing the exact amount owed.

Related reading

• Funding Rates Across Perp DEXs: What 30 Days Really Costs
• Hyperliquid vs Aster vs dYdX vs EVEDEX: Perp DEXs in 2026
• How to Set Up a DCA Futures Bot on Aster: Step-by-Step
• How to Set Up a QFL Bot on Aster: Step-by-Step
• Hyperliquid Fees vs Binance and Bybit: What's Actually Cheaper
• Spot Bot vs Futures Bot: What Beginners Should Know

Sources

Primary — Aster documentation

• Fees (USDT, USD1 and stock perpetual rates, $ASTER discount, worked examples): https://docs.asterdex.com/trading/perpetuals/fees-and-specs/fees
• Funding Rate (formula, premium index, 15-second deviation, peer-to-peer settlement): https://docs.asterdex.com/trading/perpetuals/fees-and-specs/funding-rate
• Costs of Opening Positions (initial margin, open loss, market-order entry pricing): https://docs.asterdex.com/trading/perpetuals/fees-and-specs/costs-of-opening-positions
• Liquidations (mark-price trigger, IOC reduction, Insurance Clearance Fee, negative balance conditions): https://docs.asterdex.com/trading/perpetuals/fees-and-specs/liquidations
• 1001x — Fees & Slippage (0.08% open/close, execution fee, dynamic PnL close fee, fixed and dynamic slippage): https://docs.asterdex.com/trading/1001x/fees-and-slippage
• VIP Program (maker fees zeroed 2 Feb 2026, dual volume-and-holdings criteria): https://docs.asterdex.com/program-and-rewards/vip-program
• Market Maker Program (eligibility, quoting standards, rebate mechanics): https://docs.asterdex.com/trading/perpetuals/market-maker-program
• Deposit & Withdrawal Guide (withdrawal flow, negative balance handling, rebalancing): https://docs.asterdex.com/getting-started/deposit-and-withdrawal-guide

Independent

• Bitrue Blog — Aster DEX Fees Explained: https://www.bitrue.com/blog/aster-dex-fees-guide
• CoinStats — Aster zero-fee stock perpetual announcement (promotional windows on stock perps): https://coinstats.app/news/7272a83df9fd30fdd629d66663aaab4c3d784c1d3e87f7f0f09ff3d63db516a4_Aster-DEX-removes-all-fees-on-stock-perpetual-contracts/