Prior to 2020, there were six different handicap systems used around the world. Each was well developed and provided equity for play locally, but each of the different systems produced slightly different results when calculating players’ handicaps.

After significant engagement and collaboration with the previous handicapping authorities and other National Associations, it was agreed to unify the six systems into a single WHS which:

• enables golfers of different abilities to play and compete on a fair and equal basis, in any format, on any course, anywhere around the world;
• is easy to understand and implement, without sacrificing accuracy; and
• meets the varied needs and expectations of golfers, golf clubs and golf authorities all around the world and is adaptable to suit all golfing cultures.

The WHS encompasses both the Rules of Handicapping and the Course Rating System (formerly known as the USGA Course Rating and Slope System).

As the world becomes a smaller place with a much greater frequency of international play, the development of a single handicap system has resulted in easier administration of international events and, potentially, allowed National Associations more opportunity to focus attention on golf development and strategic planning to support the sport. It has also provided the opportunity to evaluate de-personalized golfing scoring and handicap data to help monitor the on-going health of the game.

Since the introduction of the WHS, all Handicap Index calculations have been consistent for all players, making a Handicap Index directly comparable to all other players around the world.  

The WHS began rolling out in stages from January 2020. As of November 2023, 126 National Associations/countries have adopted the system, with more expected to go live in 2024.