Comparing the cost of living between London and the U.S. in 2026 depends heavily on the specific American city. Generally, London is cheaper than "Tier 1" U.S. cities like New York or San Francisco, primarily due to significantly lower healthcare costs (free at the point of use via the NHS) and more affordable mobile/internet plans. However, London is more expensive than the U.S. national average, particularly when compared to southern or midwestern cities like Atlanta, Dallas, or Charlotte. In 2026, a major differentiator is salary; U.S. professional wages in sectors like tech and finance remain substantially higher than their London counterparts, often offsetting the higher costs of American rent and private insurance. While Londoners save on car ownership due to robust public transit, they face higher "sin taxes" and utility costs. Ultimately, your "purchasing power" is often higher in the U.S., but your "lifestyle safety net" is generally more affordable in London.