For a trip to Cuba in 2026, you should plan to bring between $100 and $150 USD in cash per person, per day, as the country remains primarily a cash-based economy for tourists. Because U.S.-issued credit and debit cards generally do not work on the island due to ongoing banking restrictions, you must bring your entire travel budget in physical cash. It is vital to bring a mix of denominations, specifically $1, $5, and $10 bills, which are highly valued for tipping and small purchases. While many private businesses (paladares) and guesthouses (casas particulares) accept USD or Euros directly, you will still need to exchange some money into Cuban Pesos (CUP) for local street food or smaller shops. Be aware that the unofficial "street rate" for exchange is often significantly higher than the government rate, but you should only use reputable sources to avoid scams. Always carry a "buffer" of at least $300–$500 extra for emergencies, as there is no way to "wire" yourself more money once you are on the ground.