Recently, many beginners have been asking me about Bitcoin futures, and I think it's necessary to have a good discussion on this topic. Many people initially don't understand the difference between futures and spot trading; the core difference is that you are investing in the price trend itself, not actually holding the asset.

Bitcoin futures allow you to profit in both directions, regardless of whether the market goes up or down. Going long is straightforward—you buy a contract betting the price will rise; going short is the opposite—you sell a contract expecting the price to fall. This flexibility is something spot trading can't offer.

Currently, there are mainly two types of contracts: one is the delivery contract with a clear expiration date, and the other is the perpetual contract, which has no expiration concept. Delivery contracts are divided into four categories based on delivery time: weekly, bi-weekly, quarterly, and bi-quarterly. Weekly contracts settle on the upcoming Friday, bi-weekly on the second Friday, and quarterly contracts settle on the last Friday of the nearest month in March, June, September, or December. Bi-quarterly contracts correspond to the second nearest quarter month. A detail to note is that after the third Friday of the quarter month, the system dynamically adjusts the contract structure to prevent overlapping settlement dates.

In contrast, perpetual contracts are a more innovative approach. They have no settlement date and can theoretically be held indefinitely as long as your position doesn't get liquidated. The core mechanism of perpetual contracts is the funding fee, which is designed to keep the contract price closely aligned with the spot price. The system settles funding fees every 8 hours; if the rate is positive, longs pay shorts; if negative, shorts pay longs. The calculation is simple: the funding fee equals your net position value multiplied by the funding rate.

Perpetual contracts are also divided into two types: forward and inverse. Forward contracts are denominated in USDT and use USDT as collateral. Inverse contracts (coin-margined), although also denominated in USDT, use the underlying asset itself as collateral and for profit and loss settlement, such as Bitcoin. Additionally, there is a protective mechanism called ladder liquidation. When your position triggers a liquidation, the system doesn't close it all at once but reduces it step by step at different levels. Only when the collateral ratio drops to the first level and can no longer cover the risk will the position be fully liquidated.

These mechanisms are quite well-designed, providing traders with flexibility while also implementing risk controls. If you want to participate more deeply in derivatives trading, understanding the differences between delivery contracts and perpetual contracts is essential.