Yes, US Dollars are widely accepted across St. Kitts and Nevis in 2026, alongside the local currency, the Eastern Caribbean Dollar (XCD). A supportive peer "money" tip: the exchange rate is fixed at roughly $1 USD = $2.70 XCD. While you can pay in USD at most restaurants, shops, and for taxis, you will almost always receive your change in local EC currency. This can be a bit confusing, so it’s helpful to have a currency converter app on your phone. To get the best value, use local currency for small purchases like street food or local buses, and save your USD for larger bills. Also, ensure your US bills are crisp and clean; many Caribbean businesses will reject torn or heavily worn foreign currency due to strict bank deposit rules.