What system does the employer use to report salary sacrifice changes to HMRC in the UK?
Answer
Real Time Information (RTI) system
The employer handles the necessary reporting to HM Revenue & Customs (HMRC) through the Real Time Information (RTI) system when a salary sacrifice arrangement is correctly set up.

Related Questions
What system does the employer use to report salary sacrifice changes to HMRC in the UK?What is the key administrative difference between salary sacrifice and making an after-tax pension contribution?For a standard UK PAYE employee, what is the general administrative burden regarding declaring the salary sacrifice itself?What should Box 1 ('Total pay to date') on an employee's P60 reflect after participating in salary sacrifice?What is the fundamental action an employee takes when entering into a salary sacrifice arrangement?When might a UK employee utilizing salary sacrifice still be required to complete a Self Assessment tax return?What administrative burden is placed on Australian employees related to salary sacrificing, according to the text?How is the taxable gross pay reduced in a salary sacrifice compared to simply receiving a pay rise to buy a benefit?If an employer fails to correctly report sacrificed amounts under PAYE, what potential action might the employee need to take?If a UK employee stops participating in a salary sacrifice scheme mid-year, what happens regarding their payroll documentation?