Join as a writer
Joining PRS or MCPS as a writer means you can earn money when your music is used. You don't need to be signed to a record label or a music publishing company, but you do need to be the copyright owner of a musical work.
If you are signed with a music publishing company, you probably don't need to join MCPS, as your publisher will usually collect your mechanical income for you.
Joining PRS as a writer costs a one-off £100 fee, and it's a further £100 to join MCPS too.
Join as a music publishing company
If you have at least 15 works in your catalogue by at least two different composers, and you can provide evidence of your status as a music publishing company, you can earn royalties through the performing and mechanical rights of those musical works.
Joining PRS as a music publishing company costs a one-off £400 fee. The one-off membership fee for MCPS is also £400.