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Moonworkers Blog
Practical resources on UK payroll, HMRC compliance, employment law, and running a UK business.

A technical guide to the UK payroll API: PAYE across three tax regimes, NI category letters, student loans, auto-enrolment and RTI filing explained.

A payroll API lets software run UK PAYE, RTI and National Insurance through code. This guide explains what it does, how it works and why it matters.