What is the primary material component of most of the world's paper money?

Despite its common name, the "paper" in your wallet is not made from trees. The vast majority of banknotes circulating globally are actually printed on a special substrate made primarily of cotton fibers. In the United States, for example, currency is composed of a blend that is roughly 75% cotton and 25% linen. This unique composition gives banknotes their distinct texture and feel, which is much closer to fabric than to the wood-pulp paper used for books or newspapers.

This cotton-based material is chosen for its superior durability and longevity. A single bill must withstand being folded, crumpled, and passed through countless hands, and a cotton blend is far more resilient to this wear and tear than traditional paper. It can survive thousands of folds without tearing and can even endure an accidental trip through a washing machine. This sturdiness is essential for currency to remain in circulation for several years.

Furthermore, the unique properties of this cotton-and-linen paper are a key component of anti-counterfeiting measures. The specific texture is difficult to replicate, and the material is strong enough to have security features like watermarks and security threads embedded directly into it during the manufacturing process. While some countries are transitioning to polymer (plastic) notes, cotton remains the foundational material for most of the world's money.