Crypto transactions often come with fees, and understanding them is key to smart investing. Network fees, also known as gas fees, are paid to miners or validators who process transactions—these vary by blockchain (e.g., Ethereum fees can spike during congestion). Exchange fees apply when buying, selling, or trading crypto on platforms like Binance or Coinbase. They may include maker/taker fees, deposit/withdrawal fees, or spread costs. DeFi platforms can also charge fees for swapping tokens or using liquidity pools. Always check the fee structure before making a move. Planning transactions during low-traffic times and choosing low-fee networks (like Solana or Polygon) can save money. Be fee-savvy—small costs add up fast.