I've always wanted to understand something new for myself, but so far only in theory... Recently, I became interested in cryptocurrency arbitrage as a way to earn money. The idea is simple: the same coin has different prices on different platforms, and you can try to make a profit from this difference.

Why do such price differences even occur? It turns out there are several reasons. First, each exchange has a different number of active buyers and sellers. Second, prices are updated with a delay. And third, different countries have different laws and demand for crypto, so local platforms may have their own pricing levels.

I read about different schemes. For example, inter-exchange arbitrage — the most obvious one — buy a coin cheaper on one platform, transfer it to another, and sell it at a higher price. There’s also intra-exchange arbitrage, where you catch a difference between trading pairs on the same platform. For instance, ETH to USDT might be priced lower than if you calculate through BTC. You convert back and forth and make a profit.

There’s also something more complex — triangular arbitrage, where you make several exchanges in a row through different pairs on one exchange and return to the original currency with a profit. Or regional arbitrage, where you buy crypto on a large international platform and then sell it via P2P in another country in the local currency.

To get started, you need accounts on several exchanges (well, that’s obvious), and it’s better to work with stablecoins like USDT or USDC — it’s easier to track actual income with them. Then, you need to constantly monitor prices, use special websites or bots. And here’s where the pitfalls begin…

Fees are the main issue. Deposits, withdrawals, exchanges — all of these take a percentage. If you don’t account for all the fees, it’s easy to end up in the red. Then, speed. While you transfer a coin from one exchange to another, the price can change, and all your profit might evaporate. Some networks are slow, so I think for arbitrage, it’s better to use fast chains like TRC-20 or BSC.

Here’s a simple example for understanding: suppose BTC on one major platform costs $96,000, and on another, $96,100. You buy at $96,000, transfer, and sell at $96,100. Theoretically, $100 profit. But subtract the fees, and you might be left with just a penny.

There are also risks with withdrawal limits — not all exchanges allow you to withdraw the required amount immediately. And regional restrictions if the platform doesn’t operate everywhere. Overall, cryptocurrency arbitrage sounds like a real opportunity, but you need to be very careful with all the details.

Maybe someone experienced can share whether this really works in practice or if I’m missing something? I’d love to hear opinions from those who have already tried.