Yes, you can absolutely tip your Uber driver with cash in 2026, and many drivers actually prefer it. While Uber's platform is designed to be "cashless" and encourages tipping through the app after the ride is completed, there is no policy prohibiting physical gratuities. Tipping in cash ensures the driver receives 100% of the tip immediately without waiting for the weekly payout cycle, and it avoids any potential (though rare) processing glitches in the app. If you choose to tip via the app, you can do so for up to 30 days after your ride. For 2026 travelers, a "pro-tip" is that if you tip in cash at the beginning or middle of a long trip, it can often lead to a more personalized experience, such as the driver offering to stop at a convenience store or providing better local recommendations. Regardless of the method, tipping remains a vital part of the "gig economy" social contract, especially as fuel and maintenance costs for drivers continue to rise.