HMRC customer service adviser

HMRC customer service advisers answer phone calls, webchats and online queries from the public and businesses about tax, National Insurance and other HMRC services. The job is at administrative officer (AO) grade, based in HMRC’s regional centres, and comes with full training before you go live on calls. Pay is set on HMRC’s own AO range, which the advert states, within the Civil Service pay remit that allows departmental paybills to rise by up to 3.5% for 2026/27.

The calls you handle

Advisers are trained on particular lines of business, and the subject matter changes with the line. Common areas include:

• PAYE and tax codes, including people who think they have paid too much or too little tax
• Self Assessment registration, returns, payments and penalties
• National Insurance records and numbers
• Child Benefit claims and changes
• employer queries about payroll

On a typical call you confirm the caller’s identity through security questions, find the record, explain what has happened in plain language and, where the rules allow, put it right. Some calls end with a simple fix such as updating an employment record. Others need a referral to a specialist team. Our guide to tax codes shows the kinds of codes and errors you would be explaining.

Webchat and online queries work much the same way, often with several chats open at once.

Busy periods and targets

Demand is seasonal. The months before the 31 January Self Assessment deadline are the busiest for Self Assessment lines, and other peaks follow tax code changes and the end of the tax year. Expect overtime opportunities, and some restrictions on annual leave, around those periods. Our guide to Self Assessment for employees explains who has to file and why the deadline matters.

Contact centres measure call quality, how long calls take and how much of your time is spent available for calls. Team leaders listen to recorded calls and give feedback. Some advisers like the structure. Others find back-to-back calls tiring, especially with callers who are angry about a bill or a penalty.

Confidentiality

Everything you see about a taxpayer is confidential. Under section 19 of the Commissioners for Revenue and Customs Act 2005, wrongful disclosure of information about an identifiable person is a criminal offence. HMRC also audits access to records, and looking up someone you know, a celebrity or yourself without a business reason leads to disciplinary action and, in serious cases, dismissal or prosecution. Training covers this in detail.

Pay, pension and grade

Customer service advisers are AOs. HMRC sets its own AO pay range, with separate rates for some locations, and most new starters join at the range minimum. The 2026/27 Civil Service pay remit guidance allows each department a paybill increase of up to 3.5%, and it does not confirm what any individual receives. Our profile of the administrative officer grade explains how AO pay and promotion work across departments.

You join the alpha pension scheme, with a member contribution of 4.6% on pensionable pay up to £36,199 in 2026/27, which covers most AO salaries. Many contact centre posts offer part-time and flexible patterns, with early, late and Saturday shifts depending on the lines’ opening hours.

Recruitment and training

HMRC recruits customer service advisers in campaigns on Civil Service Jobs, often for a specific regional centre. Our guide to using Civil Service Jobs shows how to set up alerts for a location. The process usually involves an online application assessed on behaviours such as Communicating and Influencing, Managing a Quality Service and Working Together, sometimes an online test, and an interview with behaviour and strengths questions.

Nationality rules apply. UK nationals can apply for any post, and many posts are open to Commonwealth citizens and EEA nationals under set conditions. Pre-employment checks include identity, right to work, references and a criminal record check.

Training runs for several weeks and mixes classroom or virtual learning with supported time on live calls. After that you take calls independently, with a coach or team leader on hand.

Where it leads

The adviser role is a common first job in HMRC. From there, people move into technical adviser posts that handle more complex calls, team leader roles at EO, compliance work, debt management or specialist processing teams. HMRC is large and has offices across the UK, so there are also routes into other departments without moving home.