On Bitstamp, trading fees are based on the trading volume for the last 30 days. No commission is charged for trade turnover up to $1000. Above this mark, a maker/taker fee structure applies and exchange fees range from 0% to 0.3% for makers and from 0% to 0.4% for takers.
Different fees apply, when trading fiat and stablecoin pairs. It is also determined based on the 30-day trading volume on FX/Stablecoin pairs. For a trading turnover up to $1000, no commission is charged; for a turnover above $1000, the commission starts at 0.06% for the maker and 0.08% for the taker. FX/Stablecoin pairs include: EUR/USD, GBP/EUR, PAX/USD, PAX/EUR, USDC/EUR, USDC/USDT, USDC/USD, USDT/EUR, USDT/USD and others (the full list is on the website in the Fee Schedule section).