I've noticed that many people get confused about the mechanics of funding on futures. In reality, it's not as complicated as it seems at first glance.

The main idea is simple: the funding rate is essentially a interest rate that is periodically transferred between traders. If you have a long position and the rate is positive, you pay. If you have a short position, you receive. And vice versa when the rate is negative. The calculation occurs three times a day, every 8 hours.

Here's what many overlook: leverage multiplies everything. If you open a position worth $100 with 100x leverage, that's $10,000 for the funding calculation. So, if the funding rate is minus 0.1%, you'll receive $10. And if it's positive, you'll lose the same amount.

Why is this funding needed at all? The thing is, on perpetual contracts, the futures price can diverge significantly from the spot price. The funding rate acts as an anchor, pulling the contract price back toward the actual spot price. The greater the divergence, the higher the funding.

Price differences simply arise from an imbalance of supply and demand. When everyone opens leveraged longs and buys contracts, the futures price rises above the spot. Consequently, the funding rate jumps up because longs find it expensive to hold their positions.

This is a very important point: when the funding is strongly positive and the price is rising, it often signals overbought conditions. All traders are long, expecting a rise. But it can't go on forever — when one makes a profit, another loses. The market is a zero-sum game. Market makers won't push the price higher when so many are long. Usually, a correction follows.

Similarly, with negative funding. The price drops, everyone opens shorts, and the funding rate goes negative. This is a bearish sentiment. But again, it often signals a reversal. When there are too many shorts, the probability of a bounce increases.

An important point: the funding rate is not a signal to enter a trade. It’s a tool for analyzing market sentiment. Use it as a supplement to your strategy, but not as a basis for trading. It’s just one indicator showing where most traders are looking and where there might be an excess of positions.