Why American banknotes remain identical in size and color across all their denominations

Cultures · Published 9 October 2026 · Updated 25 October 2026 Swipe more like this →

In short: Federal Reserve Notes are unique among the world's currencies for their uniform size and color. While this consistency simplifies the manufacturing of vending and change machines, it creates significant accessibility barriers for the visually impaired. A long-running legal battle is finally forcing a shift toward more inclusive, tactile designs.

Federal Reserve Notes are the official paper currency of the United States, issued by the Federal Reserve System under the 1913 Federal Reserve Act. Unlike coins, which are purchased at face value, these notes are liabilities of the Federal Reserve Banks, backed by collateral such as Treasury and mortgage agency securities. The Bureau of Engraving and Printing produces them using a specific blend of 75% cotton and 25% linen, a composition that provides durability beyond traditional paper.

The current small-note format, adopted in 1928, was inspired by the dimensions of Philippine peso Silver Certificates used during the American colonial administration. While other nations have long utilized varying sizes and contrasting colors to help citizens distinguish denominations, the United States maintained uniformity. Vending machine manufacturers successfully argued that implementing multiple sizes would impose prohibitive costs on machine complexity. Consequently, U.S. currency remains difficult to distinguish non-visually, forcing blind users to rely on sighted individuals or specialized machines.

This lack of accessibility led to the 2002 lawsuit American Council of the Blind v. Paulson. In 2006, Judge James Robertson ruled that the design denied blind people meaningful access to the currency system. Although the government initially cited high costs for potential changes, the courts upheld the ruling. As a result, the Bureau of Engraving and Printing is now integrating tactile features, such as raised patterns, into future redesigns. While the $100 note was updated in 2013, further accessibility features are scheduled for new $10, $50, and $20 notes between 2026 and 2030.

Counterfeiting remains a persistent concern, with the U.S. dollar seeing about 100 seized counterfeits per million notes, higher than the Swiss franc or Euro. To combat this, the government has introduced security threads and 3D ribbons. However, because the United States has never demonetized existing currency, older designs remain legal tender, allowing counterfeiters to target less secure, legacy bills until they are eventually cycled out of circulation.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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