Recently, someone asked me about the cost structure of perpetual contracts, and I realized that many beginners simply don't know how the contract fees are calculated. In fact, this part is quite easy to overlook, but over the long term, transaction fees definitely become a major expense.

First, let's go over the basic concept of trading fees. There are two ways to open and close positions: one is placing limit orders (maker), and the other is market orders (taker). The standard fee rates on mainstream platforms are basically fixed, with maker orders at 0.02% and taker market orders at 0.05%. You need to remember a key point: as long as you're not buying or selling at the current price, whether you're taking profit or stopping loss, it counts as placing an order. Simply put, manually entering a price is a limit order, and executing at the current price without setting a specific price is a market order.

The calculation of contract fees is actually very straightforward: it’s the position value multiplied by the fee rate. For example, suppose you open a position with $600 of capital using 100x leverage (though I don't recommend playing like this), then the position value is $60,000. If you use a market order to open the position, the fee is $60,000 × 0.05% = $30. Closing the position also follows the same logic: closing at the current price costs $30, while closing with a limit order costs $12. Over a complete trading cycle, just the contract fees can amount to $24 to $60, and this is only for one trade. Think about it—if you trade frequently, the accumulated fee costs can be staggering.

Besides trading fees, perpetual contracts also have something called the funding rate, which is more special. The funding rate is not fixed; it varies dynamically based on the market’s long-short ratio difference, mainly to balance market forces. The calculation is simple: position value multiplied by the funding rate. When the funding rate is positive, long positions pay money, and short positions earn money; when it’s negative, the opposite happens.

Another detail to note is that the funding rate is settled at specific times: 00:00, 08:00, and 16:00 every day. Only at these settlement times will your open positions actually incur or be credited with the funding fee. So, if you want to avoid the cost of funding fees, you can close your position before the settlement.

Honestly, many traders lose money not only because of incorrect market direction judgment but also because hidden costs like fees and funding rates eat up a lot of profit. Understanding these detailed contract fee calculations is really important for long-term traders.