Mechanical royalties are one of the older categories in music copyright. The principle dates from the early twentieth century, when reproducing a copyrighted song onto a physical carrier (a piano roll, then a record, then a tape, then a CD) triggered a payment to the songwriter. The streaming era inherited the framework and adapted it, sometimes awkwardly, to digital distribution. Understanding how the mechanical royalty works in 2026, and where it diverges between the UK and the US, helps explain why songwriter income has been a contested area of streaming reform.
What a mechanical royalty is
The mechanical royalty pays the songwriter and the music publisher when a song is reproduced. In the streaming context, this means a small fraction of every stream is treated as a reproduction (a copy of the song held briefly in cache and delivered to the listener) and triggers a mechanical payment.
This sits separately from the performance royalty, which pays the songwriter and publisher when a song is performed publicly (broadcast on radio, played in a venue, or, in the streaming context, communicated to the public via a platform).
For most UK streaming income, both the mechanical and performance components are paid through PRS for Music’s combined administration with MCPS (the Mechanical Copyright Protection Society), which since 2009 has operated as part of the same group. The streamer pays a single combined fee covering both rights, and PRS distributes to writers and publishers according to its rules.
The UK structure
In the UK, the mechanical royalty for streaming is set by an industry-negotiated framework rather than by a statutory rate. The combined PRS plus MCPS share of streaming income (covering both performance and mechanical rights) is approximately 15 per cent of net streaming revenue after platform deductions. The split between the two within that 15 per cent is administrative; the songwriter sees a single payment from PRS that combines both elements.
This compares with the recording side (paid to the master rights holder, typically the label) which receives approximately 50 to 55 per cent of the same net revenue. The difference is one source of the songwriter income gap discussed elsewhere in this guide.
The US structure
The United States operates a different system. Mechanical royalties for streaming in the US are set by statute through the Copyright Royalty Board, with rates determined for multi-year periods. The current rate framework set rates that gradually rose toward 15.35 per cent of streaming revenue by 2027, paid via the Mechanical Licensing Collective (MLC) which was established by the Music Modernization Act of 2018.
The MLC handles distribution to writers and publishers in the US. It has built relationships with Harry Fox Agency (the long-standing US mechanical licensing body) and with international societies including PRS for Music. UK songwriters with a meaningful US streaming presence receive their US mechanical income via reciprocal arrangements between PRS and the MLC.
The digital mechanical mess
The transition from physical mechanicals (a clear, simple per-unit calculation) to digital mechanicals (a percentage of platform-specific net revenue) created a long period of administrative complexity that took years to fully resolve.
The issues included:
- Black box income (mechanical royalties collected by platforms but not matched to the correct songwriter or publisher) accumulated to substantial amounts over several years.
- The matching problem (correctly identifying which song was streamed and who wrote it) required extensive metadata cleanup that is still ongoing.
- The cross-border problem (a song written in the UK but streamed in the US, or vice versa) required reciprocal arrangements that took time to operationalise.
- The pre-1972 recording question in the US (whether older recordings were entitled to mechanicals on streaming) was resolved by legislation but only after substantial dispute.
Most of these issues are now substantially resolved or in active resolution. The MLC’s establishment in 2021, the gradual completion of metadata reconciliation work, and the strengthening of bilateral arrangements between societies have reduced the friction in the system.
Where it’s heading
Several developments are shaping the mechanical royalty landscape:
- The continuing roll-out of the Music Modernization Act framework in the US is gradually improving the speed and accuracy of mechanical distributions.
- UK songwriter advocacy continues to push for a higher proportion of streaming revenue to flow to publishing rights, addressing the structural imbalance with master rights.
- AI-generated content questions (whether an AI-generated work triggers mechanicals, who the songwriter is, how rights apply) are being actively considered by societies, regulators, and the courts.
- The integration of streaming mechanicals into broader streaming reform conversations (in the UK, the conversation following the DCMS inquiry) is putting pressure on the structural shares.
What writers should know
For practical UK songwriting purposes, the most important things to understand about mechanical royalties are:
- Register your works with PRS as both PRS member (for performance) and MCPS member (for mechanicals). PRS membership covers both, but registration of individual works is necessary.
- Make sure your splits are correct on every co-written song; metadata errors are a leading cause of unpaid mechanicals.
- Understand that for UK streaming, mechanicals and performances combine into a single PRS payment; you don’t need to track them separately for most purposes.
- For US income, ensure your publisher (or your PRS administrator) has registered your works with the MLC. PRS handles this for many member writers, but it’s worth confirming.
- For sync placements (TV, film, advertising), mechanicals can become a meaningful additional income line where the placement triggers reproduction.
The mechanical royalty system is unglamorous administrative infrastructure, but it represents real money for working writers. The gradual modernisation of the framework, both in the UK and internationally, continues to improve its effectiveness.
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