For international travel in 2026, the general recommendation is to carry between $200 and $500 USD in "emergency" liquid cash, but to rely on Travel Forex Cards or Credit Cards for 90% of your spending. Many major destinations in Europe, North America, and parts of Asia are now nearly cashless, meaning you can pay for everything from a coffee to a hotel room with a "tap" of your phone or card. However, cash is still vital for "micro-transactions" such as public toilets, small market stalls, tipping tour guides, or rural bus fares where card readers may be non-existent or frequently "offline." If you are traveling to countries with developing financial infrastructures, such as parts of Southeast Asia or Africa, you should carry a higher percentage (perhaps 30–40%) of your budget in cash, specifically in clean, crisp, small-denomination US Dollars, which are often easier to exchange than other currencies. A smart 2026 strategy is the "90:10 rule"—keep 90% of your funds on a secure, low-fee digital card and 10% in local currency cash tucked away in two separate locations for safety.