HMRC payroll compliance checks are becoming more frequent and more detailed across the UK. For accounting firms managing client payrolls, understanding what these checks involve in 2026 is no longer optional. This guide breaks down what to expect, what HMRC looks at, and how firms can keep clients protected and audit ready.
What Are HMRC Payroll Compliance Checks?
An HMRC payroll compliance check is a formal review of how an employer runs payroll, reports pay data, and handles tax and National Insurance deductions. HMRC’s Employer Compliance Team carries out these checks to confirm that PAYE, National Insurance contributions, and related records match what has actually been paid to staff.
These checks can be routine or targeted. Some are random selections as part of HMRC’s risk based monitoring. Others follow a specific concern, such as a mismatch between Real Time Information (RTI) submissions and bank records. Either way, the goal is the same: to confirm payroll accuracy and catch underpayments or errors before they grow into bigger tax liabilities.
Why Payroll Compliance Checks Are Increasing in 2026
HMRC has expanded its use of data matching tools that compare payroll submissions against bank transactions, VAT records, and third party data sources. This means inconsistencies that once went unnoticed are now flagged automatically.
A few factors are driving the rise in checks this year:
- Wider use of automated data cross checking through Connect, HMRC’s analytics system
- Continued scrutiny of umbrella companies and off-payroll working arrangements
- Increased National Minimum Wage enforcement following recent wage rate changes
- Higher reporting expectations tied to Making Tax Digital rollouts
- Growing use of flexible and hybrid pay structures that create reporting gaps
For accounting firms, this means client payrolls that were low risk a few years ago may now attract more attention. Staying proactive rather than reactive is the safer path.
Common Triggers for an HMRC Payroll Investigation
Certain patterns tend to catch HMRC’s attention faster than others. Knowing these triggers helps firms flag risk early, before a letter from HMRC arrives.
| Trigger | Why It Raises Concern |
| Late or inconsistent RTI submissions | Suggests payroll is not run on time each period |
| Frequent use of the Basic PAYE Tools without support | Increases chance of manual reporting errors |
| Pay below National Minimum Wage thresholds | Directly breaches statutory pay law |
| Irregular use of Statutory Sick Pay or Maternity Pay | Can indicate incorrect eligibility checks |
| High staff turnover with informal contracts | Raises questions about employment status |
| Repeated correction submissions (EYU or FPS adjustments) | Signals possible underlying payroll system issues |
If a client falls into more than one of these categories, it is worth reviewing their payroll setup before HMRC does.
What HMRC Reviews During a Payroll Compliance Check
Once a check begins, HMRC officers request specific documents and records. Knowing this list in advance lets accounting firms prepare clients well ahead of any formal request.
HMRC typically asks to see:
- Payroll records for the current and previous tax years
- RTI submission history, including Full Payment Submissions and Employer Payment Summaries
- P11D and P60 forms for relevant employees
- Records of expenses and benefits provided to staff
- Evidence of National Minimum Wage and National Living Wage compliance
- Contracts of employment or engagement, especially for contractors under IR35 rules
- Pension auto-enrolment records
- Bank statements showing wage payments
Officers usually compare these documents against submitted PAYE data. Any mismatch, even a small timing difference, can lead to further questions. Firms that keep digital, well organised records tend to move through checks far faster than those relying on paper files or scattered spreadsheets.
Key Payroll Compliance Changes UK Accounting Firms Must Know in 2026
Several rule updates are shaping how payroll checks are conducted this year. Firms need to build these into client processes now rather than waiting for a review to expose a gap.
National Minimum Wage rate changes:
Updated hourly rates apply from April 2026, and HMRC continues to prioritise minimum wage enforcement as a top compliance area.
Off-payroll working (IR35) reviews:
HMRC is increasing checks on medium and large businesses using contractors, particularly where status determinations are inconsistent.
Making Tax Digital for Income Tax:
Self-employed individuals and landlords above the income threshold now fall under digital reporting requirements, which indirectly affects payroll bureaus managing mixed client portfolios.
Construction Industry Scheme (CIS) verification:
Stricter checks apply to subcontractor status and deduction rates.
Real Time Information penalty thresholds:
Late filing penalties are applied more consistently, with fewer automatic reductions for first time errors.
Accounting firms that build these changes into client onboarding checklists reduce the risk of a compliance check turning into a penalty notice.
Penalties and Risks of Payroll Non-Compliance
Payroll errors carry real financial consequences, both for the client and for the firm managing their books. HMRC applies penalties based on the type of failure and whether it was careless or deliberate.
Common penalty categories include:
- Late filing penalties for RTI submissions, starting from £100 per month depending on employer size
- Late payment penalties on PAYE and National Insurance, calculated as a percentage of the unpaid amount
- Interest charges on outstanding tax, which accrue daily until payment is made
- National Minimum Wage underpayment penalties, which can reach up to 200 percent of the arrears owed
- Reputational damage, including public naming for serious minimum wage breaches
For accounting firms, a client’s penalty can also affect the firm’s own standing, particularly if the error stemmed from poor advice or missed deadlines. This makes early detection and correction far more valuable than dealing with the aftermath.
How Accounting Firms Can Prepare Clients for HMRC Checks
Preparation is the strongest defence against a difficult compliance check. Firms that build a clear pre-check routine give clients confidence and reduce the time HMRC spends reviewing records.
Steps worth building into client service plans:
- Run a payroll health check every quarter, not just at year end
- Reconcile RTI submissions against bank payments monthly
- Confirm employment status classifications annually, especially for contractors
- Keep a digital archive of contracts, pay records, and correspondence for at least three years
- Brief clients on what a compliance check letter looks like and how to respond calmly
- Assign a single point of contact within the firm for any HMRC correspondence
Clients who feel informed tend to cooperate more smoothly during an actual review, which shortens the process and reduces stress on both sides.
Payroll Compliance Checklist for Accounting Firms
A simple checklist keeps compliance work consistent across every client file, regardless of which team member handles it.
| Task | Frequency | Responsible Party |
| Reconcile RTI submissions with payments | Monthly | Payroll administrator |
| Review National Minimum Wage compliance | Quarterly | Payroll manager |
| Audit contractor and IR35 status | Annually | Senior accountant |
| Update pension auto-enrolment records | Ongoing | Payroll administrator |
| Confirm P11D and benefits reporting | Annually (July deadline) | Tax team |
| Backup digital payroll records | Monthly | IT or admin support |
Using a shared checklist across the firm, rather than leaving it to individual judgement, closes the gaps that HMRC checks are designed to find.
Role of Payroll Software and Making Tax Digital in Compliance
Modern payroll software plays a growing part in reducing compliance risk. HMRC recognised software packages automatically format RTI submissions correctly, which cuts down on manual entry mistakes.
Benefits of using HMRC recognised payroll software include:
- Automatic calculation of tax codes, National Insurance, and student loan deductions
- Built in alerts for missed submission deadlines
- Digital audit trails that satisfy HMRC’s record keeping requirements
- Easier integration with Making Tax Digital systems for firms managing both payroll and tax filings
Firms still using manual spreadsheets or outdated systems face higher error rates and slower response times during a compliance check. Moving clients onto supported, cloud based payroll platforms is one of the most practical steps a firm can take this year.
How UK Accounting Firms Can Build Trust and Stay Ahead
Client trust grows when a firm demonstrates that payroll compliance is handled proactively – not just at year end. Firms across the UK, from London based practices to regional bureaus in Manchester, Leeds, and Birmingham, are increasingly marketing compliance readiness as a core service rather than an add on.
Publishing Short Client Guides on Payroll Deadlines and Rule Changes
Simple, plain English updates on RTI deadlines, National Minimum Wage changes, and pension auto-enrolment thresholds help clients feel informed rather than caught off guard. Firms that send a short quarterly briefing, even a single page PDF or email, are seen as more reliable than those who only make contact when something goes wrong.
Offering a Compliance Review as a Standalone Service
Separating compliance review work from routine payroll processing gives clients a clearer picture of value. Instead of bundling everything into one fee, firms are packaging payroll health checks, IR35 status reviews, and RTI reconciliations as distinct services. This makes compliance work visible rather than something clients assume is already covered.
Training Staff Regularly on HMRC’s Latest Guidance
HMRC updates its guidance often, and payroll teams need to keep pace. Firms that run internal training sessions after major announcements, such as National Minimum Wage rate changes or Making Tax Digital updates, reduce the risk of outdated advice reaching clients. Well trained staff also spot early warning signs in client payroll data before HMRC does.
Communicating Proactively When Risk Signs Appear
Waiting for a client to ask questions is a missed opportunity. Firms that flag unusual patterns early, such as inconsistent RTI submissions or borderline minimum wage pay rates, show clients that compliance is being actively monitored, not just processed. This kind of proactive contact often prevents small issues from becoming HMRC enquiries.
Firms that position themselves as compliance partners, rather than just payroll processors, tend to retain clients longer and win referrals more easily.
Final Thoughts
HMRC payroll compliance checks in 2026 are more data-driven and more frequent than in previous years. For UK accounting firms, the safest approach is building compliance checks into routine client management rather than treating them as an occasional task. Firms that reconcile records monthly, keep digital documentation, and stay current on rate and rule changes put both themselves and their clients in a stronger position. A little consistent effort throughout the year saves far more time, money, and stress than scrambling to respond after HMRC sends a letter.
FAQs
What Is An HMRC Payroll Compliance Check?
It is a review by HMRC’s Employer Compliance Team to confirm that PAYE, National Insurance, and pay records match what an employer actually paid staff.
How Often Does HMRC Carry Out Payroll Checks?
There is no fixed schedule. Checks can happen randomly or be triggered by data mismatches, late filings, or specific risk indicators.
What Records Does HMRC Ask For During A Check?
Typically payroll records, RTI submissions, P11D and P60 forms, employment contracts, and bank statements showing wage payments.
What Happens If A Client Fails An HMRC Payroll Check?
HMRC may issue penalties, request repayment of underpaid tax or National Insurance, and apply interest on any outstanding amounts.
How Much Are HMRC Late Filing Penalties For Payroll?
Penalties usually start from £100 per month, depending on the number of employees, and can increase for repeated late submissions.
Can Accounting Firms Be Held Responsible For A Client’s Payroll Errors?
Firms are not usually liable directly, but poor advice or missed deadlines can damage the firm’s reputation and client relationship.
What Is The National Minimum Wage Penalty For Underpayment?
Penalties can reach up to 200 percent of the arrears owed, alongside the requirement to repay the shortfall to affected staff.
Does Making Tax Digital Affect Payroll Compliance?
Indirectly yes, since firms managing both payroll and tax filings need consistent digital record-keeping across all client accounts.
How Can A Firm Prepare A Client Before An HMRC Payroll Check Happens?
By running quarterly payroll health checks, reconciling RTI data monthly, and keeping three years of digital records on file.
What Software Helps Reduce Payroll Compliance Risk?
HMRC-recognised, cloud-based payroll software reduces manual errors and creates a clear digital audit trail for compliance reviews.
