What Is Perpetual Futures Trading?

In traditional financial markets, a futures contract is an agreement to buy or sell an asset at a specific price on a specific future date. The contract expires, settlement occurs, and the position closes. In cryptocurrency markets, the most widely traded derivatives product takes this concept and removes the expiry date entirely. The result is a perpetual futures contract, commonly called a “perp”: a derivative instrument that tracks the price of an underlying cryptocurrency indefinitely, with no settlement date, no delivery of the underlying asset, and a funding rate mechanism that keeps the contract price anchored to the spot price.

Perpetual futures have become the dominant trading instrument in cryptocurrency markets. On major exchanges, perpetual futures trading volume regularly exceeds spot trading volume by a significant margin. They are used by sophisticated traders for speculating on price direction with leverage, by investors for hedging existing positions, and by market makers for managing inventory risk. They are also one of the most dangerous instruments available to retail traders, with liquidation mechanics that can wipe a position entirely in a matter of minutes during volatile market conditions.

Understanding precisely how perpetual futures work, what makes them different from standard futures and spot trading, how the funding rate mechanism functions, and what the specific risks are is essential knowledge before engaging with this product in any capacity.

How Perpetual Futures Differ From Standard Futures

As covered in our spot trading vs futures trading resource, a standard futures contract has a defined expiry date: on the settlement date, the contract resolves and either delivers the underlying asset or settles in cash at the final settlement price. A trader holding a futures contract to expiry must either take or deliver the underlying asset, or roll the position into a new contract before expiry.

A perpetual futures contract has no expiry date. The position can be held indefinitely as long as the trader maintains sufficient margin to support it. There is no settlement date to manage, no rollover to execute, and no physical or cash delivery at expiry. The trader simply holds the position until they choose to close it, or until the position is liquidated due to insufficient margin.

This structural difference makes perpetual futures significantly more convenient for traders who want continuous directional exposure to cryptocurrency prices without managing contract rollovers. It also introduces the funding rate mechanism, which is the primary tool for anchoring perpetual contract prices to the underlying spot price in the absence of the natural price convergence that occurs as standard futures approach expiry.

The Funding Rate Mechanism

The funding rate is the most distinctive feature of perpetual futures contracts and the mechanism that prevents their price from diverging indefinitely from the underlying spot price.

The funding rate is a periodic payment exchanged between long position holders and short position holders. It is not paid to the exchange: it is transferred directly between traders on opposite sides of the market.

When the perpetual price trades above the spot price, demand for long positions exceeds demand for short positions. The funding rate is positive: long position holders pay short position holders. This creates an economic incentive for longs to close their positions and for shorts to open new positions, pushing the perpetual price back toward the spot price as demand for longs decreases and supply of shorts increases.

When the perpetual price trades below the spot price, demand for short positions exceeds demand for long positions. The funding rate is negative: short position holders pay long position holders. This creates an incentive for shorts to close and longs to open, pushing the perpetual price back toward spot.

The funding rate is typically calculated and settled every eight hours on most major exchanges, though some exchanges use different intervals. The rate itself varies with the size of the premium or discount between the perpetual price and the spot price: a larger divergence produces a larger funding rate, creating stronger economic pressure to close it.

The funding rate has direct cost implications for traders holding positions across funding intervals. A trader holding a significant long position during a period of strongly positive funding rates, common during bull market euphoria when the perpetual trades at a persistent premium to spot, pays funding costs every eight hours that accumulate into a meaningful drag on position returns over time. Conversely, a trader holding shorts during strongly negative funding rates pays to maintain the position. Monitoring the funding rate is part of the cost management of perpetual futures trading.

Leverage in Perpetual Futures

Perpetual futures are traded on margin, meaning traders can control a position much larger than their actual capital by borrowing the remainder. As covered in our leverage trading explained resource, leverage amplifies both gains and losses proportionally.

A trader depositing $1,000 AUD as margin and opening a 10x leveraged long position controls $10,000 AUD worth of the underlying cryptocurrency. A 10% price increase in the underlying asset produces a $1,000 gain on the $10,000 position, doubling the trader’s $1,000 margin. A 10% price decrease produces a $1,000 loss, eliminating the entire margin and triggering liquidation.

The leverage available on perpetual futures contracts varies by exchange and asset. Major exchanges offer leverage ranging from 2x to 125x on Bitcoin perpetuals, with lower maximum leverage typically applied to smaller-cap assets. Higher leverage magnifies the liquidation risk proportionally: a 100x leveraged position is liquidated by a 1% adverse price move.

Initial margin is the collateral required to open a position. Maintenance margin is the minimum collateral required to keep the position open. When a position’s losses reduce the margin below the maintenance margin level, the exchange’s liquidation engine closes the position automatically to prevent the account from going into negative equity. This liquidation can occur rapidly during volatile market conditions, with cascading liquidations across many leveraged positions contributing to the sharp, fast price moves that characterise cryptocurrency market crashes.

Long and Short Positions in Perps

Perpetual futures allow traders to profit from price movements in either direction, which is one of their primary advantages over simple spot trading.

A long position profits when the underlying asset’s price rises. A trader who believes Bitcoin will appreciate opens a long Bitcoin perpetual. If Bitcoin rises, the position gains value. If Bitcoin falls, the position loses value and may be liquidated if the loss exceeds the margin.

A short position profits when the underlying asset’s price falls. A trader who believes Bitcoin will depreciate opens a short Bitcoin perpetual. If Bitcoin falls, the position gains value. If Bitcoin rises, the position loses value and may be liquidated.

The ability to short cryptocurrency through perpetuals is one of their most significant features from a market structure perspective. Short selling provides a mechanism for price discovery in declining markets, allows existing holders to hedge their spot positions against downside risk, and enables traders to profit from bear market conditions that are inaccessible in spot-only markets.

Hedging through perpetuals is a specific use case worth understanding separately from speculation. An investor holding a significant Bitcoin spot position who is concerned about short-term downside can open a short Bitcoin perpetual to offset potential losses in the spot position, effectively neutralising the price exposure temporarily without selling the underlying asset. This is a strategy used by sophisticated investors to manage portfolio risk, as covered in our understanding risk management resource.

Mark Price and Liquidation

Understanding how exchanges calculate position value and determine liquidation prices is essential for managing perpetual futures positions safely.

Mark price is the price used to calculate unrealised profit and loss and determine whether a position has breached the maintenance margin level triggering liquidation. Mark price is typically calculated as a weighted average of the perpetual contract price and the spot price across multiple exchanges, rather than the last traded price on the exchange alone. Using mark price rather than last traded price for liquidation calculations protects traders from being liquidated by brief, artificial price spikes or manipulated wicks on a single exchange.

Liquidation price is the asset price at which a position’s losses will equal the margin deposited, triggering automatic closure of the position. For a long position, the liquidation price is below the entry price. For a short position, the liquidation price is above the entry price. The distance between entry price and liquidation price is inversely proportional to leverage: higher leverage means the liquidation price is much closer to the entry price.

Monitoring the distance between current price and liquidation price is one of the most important active risk management tasks for any leveraged perpetual position. Adding margin to a position moves the liquidation price further away, providing more buffer. Reducing position size achieves the same effect.

Insurance funds maintained by exchanges serve as a buffer when liquidated positions cannot be closed at the liquidation price due to rapid market movement or insufficient liquidity. Without an insurance fund, positions that cannot be liquidated at the liquidation price would cause losses for the exchange or other traders. Insurance funds allow exchanges to absorb these gaps, protecting the integrity of the trading system.

Perpetual Futures on Centralised vs Decentralised Exchanges

Perpetual futures are available on both centralised exchanges and decentralised exchanges, with meaningfully different characteristics on each.

Centralised exchange perpetuals. Major centralised exchanges including Binance, Kraken, OKX, and Coinbase offer perpetual futures with deep liquidity, tight spreads, advanced order types covered in our order types explained resource, and sophisticated margin management tools. They operate custodially: the exchange holds the margin collateral, introducing counterparty risk as covered in our risks of keeping crypto on an exchange resource.

Decentralised perpetuals. Protocols like dYdX, GMX, and Hyperliquid offer perpetual futures trading on-chain without a centralised custodian holding user funds. The margin is managed by smart contracts rather than a centralised exchange, eliminating custodial counterparty risk while introducing smart contract risk as covered in our risks of DeFi investing resource. Decentralised perpetuals have grown significantly in total value locked and trading volume, providing a non-custodial alternative for traders who prefer self-custody as covered in our not your keys not your crypto resource.

The Risks of Perpetual Futures Trading

Perpetual futures carry a specific and significant risk profile that distinguishes them from spot trading and other investment approaches.

Liquidation risk. The most immediate and severe risk of leveraged perpetual trading is liquidation: the total loss of margin deposited for a position. Unlike spot trading where a position can always be held through a downturn waiting for recovery, a leveraged perpetual position is forcibly closed when losses reach the margin level. High leverage means liquidation can occur on relatively small adverse price moves, and during volatile market conditions, cascading liquidations across many positions can drive price moves that liquidate even more positions in a rapid feedback loop.

Funding rate drag. Persistent funding rate payments in positions held for extended periods accumulate into significant costs. A long position held during a sustained period of positive funding rates may find that funding costs erode a meaningful portion of any unrealised gains.

Volatility and gap risk. Cryptocurrency markets can move very rapidly, particularly during major news events or market dislocations. A sudden large price move can breach a position’s liquidation price before additional margin can be deposited, resulting in liquidation despite the trader’s intention to manage the position actively.

Complexity and psychology. As covered in our trading psychology and psychology of trading avoiding FOMO and FUD resources, the emotional pressure of managing leveraged positions in volatile markets is substantially greater than managing spot positions. The psychological challenges of watching a leveraged position move against you, and the temptation to add to losing positions or increase leverage after losses, are common contributors to significant trading losses.

Regulatory considerations. In Australia, leveraged derivatives trading including perpetual futures is regulated by ASIC. Australian residents accessing high-leverage perpetual futures through offshore unregulated exchanges are operating outside the protections of Australian financial services law. Reputable exchanges serving Australian clients with regulated products apply leverage limits and other protections in accordance with ASIC requirements.

Perpetual Futures vs Spot Trading: Which Is Appropriate?

As covered in our spot trading vs futures trading resource, the choice between spot trading and perpetual futures trading depends on the trader’s specific objectives, risk tolerance, and experience level.

Spot trading involves buying and holding the actual cryptocurrency asset. Losses are limited to the capital invested. There is no liquidation, no funding rate, and no expiry. The position can be held indefinitely. Spot trading is appropriate for investors taking medium to long-term directional views on cryptocurrency prices and for strategies like dollar cost averaging into long-term positions.

Perpetual futures are appropriate for experienced traders who specifically require leverage, the ability to short, or the ability to hedge existing spot positions. They require active position management, margin monitoring, and a clear understanding of liquidation mechanics. They are not appropriate for investors who want simple long-term exposure to cryptocurrency price appreciation: for that objective, spot ownership through a reputable exchange or self-custody wallet is the appropriate instrument.

The statistical reality of retail leveraged trading is sobering: the majority of retail traders who use high leverage in perpetual futures lose money over time, with the leverage and liquidation mechanics working systematically against undercapitalised traders who cannot withstand the volatility required to hold through adverse price moves.

Tax Treatment of Perpetual Futures in Australia

The tax treatment of perpetual futures trading in Australia is an area where professional advice is particularly important given the complexity of the instruments.

The ATO treats cryptocurrency derivatives including perpetual futures as financial contracts rather than direct asset ownership. Gains and losses from perpetual futures trading are generally assessable as income or capital depending on the trader’s circumstances, trading frequency, and whether the activity constitutes a business of trading or investment.

Funding rate payments received are assessable income. Funding rate payments made may be deductible depending on the trader’s tax treatment. Realised gains and losses from closing positions are assessable events. The mark-to-market treatment of unrealised positions at year end may also apply depending on the trader’s classification.

As covered in our cryptocurrency tax Australia and ATO crypto reporting resources, the tax treatment of derivatives is complex and the record-keeping requirements are significant. Professional advice from a tax accountant with cryptocurrency and derivatives experience is strongly recommended for any active perpetual futures trader.

Key Takeaways

A perpetual futures contract is a derivative instrument that tracks the price of an underlying cryptocurrency with no expiry date. The funding rate mechanism, periodic payments between long and short holders, keeps the perpetual price anchored to the spot price. Perpetuals are traded on margin with leverage, amplifying both gains and losses and introducing liquidation risk when losses exceed deposited margin.

Perpetuals allow both long and short positions, enabling profit from price moves in either direction and hedging of existing spot positions. Risks include liquidation from adverse price moves, funding rate drag on held positions, volatility gap risk, and the psychological pressure of managing leveraged positions. Perpetuals are appropriate for experienced traders with specific objectives requiring leverage or short exposure: they are not appropriate as a substitute for spot ownership for long-term investors. Tax treatment in Australia is complex and requires professional advice.

For everyday investors who want to understand how derivatives and leveraged instruments work in cryptocurrency markets without necessarily using them, our Runite Tier Membership provides the education and frameworks to build that understanding. For serious traders who want personalised guidance on derivatives strategy, risk management, and integrating perpetual futures appropriately within a sophisticated trading framework, our Black Emerald and Obsidian Tier Members receive direct specialist support. Find out more at shepleycapital.com/membership.