01
Hidden overpayments
Many employees miss out on money they are entitled to keep because HMRC has issued the wrong tax code or allowances have not been claimed.
Employer Financial Wellbeing Support
Help employees keep more of what they earn.
Proactive tax reviews help employers support financial wellbeing, reduce hidden money stress, and show a clear commitment to fair and responsible employment.
Trusted by 700+ organisations
Current year + previous 4 tax years reviewed
No employer administration required
Why Employers Are Using Us
A hidden wellbeing issue with a practical solution
Many employees assume their tax code is correct, yet a significant proportion may have paid more tax than necessary due to incorrect codes or unclaimed reliefs.
45%
of reviewed employees had overpaid tax.
41×
more likely to have overpaid than underpaid.
£12 + VAT
tax-relievable employer cost per employee, subject to fair use.
2.5m+
employees have completed a CheckMyTax review since 1994.
647,000+employees found a tax error and received a refund
£130.9mrecovered from HMRC for previous tax years
£500m+additional net pay following review
The Challenge
Most employees do not know whether their tax is right.
Employees often assume tax is automatically correct. In reality, most do not understand the more complex aspects of PAYE, what changes need to be reported to HMRC, or how to spot tax errors.
02
Financial stress at work
Money worries affect focus, morale, wellbeing, and absence. A tax error can quietly add to existing cost-of-living pressure.
03
Employer blind spot
HR and payroll teams are not usually expected to investigate individual tax accuracy, yet employees often assume their employer has checked it.
How It Works
A simple, expert-led review for the current and previous four tax years.
CheckMyTax provides an online employment tax review that helps employees understand whether they are paying the right amount of tax and what action to take if not.
1
Intelligent Quick Check
Customers begin with our proprietary Quick Check, powered by over 30 years of specialist expertise and insights from more than 3 million records. This intuitive triage tool efficiently highlights areas that may warrant further attention.
2
Specialist Review
Where potential issues are identified, the case is seamlessly progressed to a comprehensive review conducted by one of our experienced tax specialists, ensuring a thorough and expert-led assessment.
3
Comprehensive Report & Action Pack
Following the review, customers receive a detailed written report explaining what was assessed, the rationale behind it, and any findings requiring attention. This is accompanied by a tailored action pack, including clear guidance, step-by-step instructions, and any necessary forms pre-completed for ease.
4
Review & Correct Service (Optional)
For customers seeking a fully managed solution, our Review & Correct Service provides complete peace of mind. Our team will implement all required corrections and manage all correspondence with HMRC on the customer’s behalf.
Employee Onboarding
A powerful tool to support new starter onboarding.
Checking tax details when someone joins your organisation helps ensure payroll accuracy from the very beginning of employment. Including a tax review as part of onboarding can prevent errors, reduce payroll queries, and create a smoother experience for both the employee and employer.
Accurate payroll processing
- Correct tax details ensure your payroll function deducts the right amount of tax through PAYE.
- This reduces the likelihood of payroll errors and corrections later.
Compliance with tax regulations
- Employers must report pay and tax deductions to HMRC through PAYE.
- Ensuring employees start with the correct tax details supports accurate HMRC reporting.
Less administrative work
- Incorrect tax details can require payroll recalculations and corrections.
- Getting it right from the start reduces later adjustments and administrative workload.
Fewer employee pay disputes
- Correct tax deductions reduce confusion about payslips.
- This lowers the number of payroll queries and helps maintain employee confidence in pay accuracy.
Benefits To Employers
Why a company-paid tax review makes business sense.
This is more than a financial perk. It helps employers support fairness, trust, productivity, and responsible pay practices.
Improves financial wellbeing
- Helps employees keep more of their income and recover money they should not have paid.
- Reduces a common but often invisible source of financial stress.
Strengthens trust and loyalty
- Shows employees that the organisation cares about real-life take-home pay, not just headline salary.
- Builds confidence in the employer's approach to wellbeing and fairness.
Reduces payroll and HR queries
- Gives employees an expert pathway for checking tax accuracy.
- Can reduce confusion and ad hoc tax-related questions to internal teams.
Mitigates employer risk
- Supports a proactive approach to fair taxation through PAYE.
- Helps demonstrate responsible employer practice and seriousness about pay accuracy.
Cost-effective employee benefit
- Low-cost compared with many employee benefits while delivering high perceived value.
- Suitable for employers that want meaningful support without creating heavy internal admin.
Supports fair and transparent pay
- Helps employees receive the amount they are legally entitled to take home.
- Reinforces an equitable and transparent pay culture.
ESG & CSR
A practical financial wellbeing initiative with measurable social value.
Proactive tax reviews support social impact, responsible governance, and a stronger case for responsible employment commitments.
Environmental consideration
While primarily a social and governance initiative, digital delivery can reduce reliance on paper-heavy processes and support more considered long-term financial choices.
Social value impact
Correct tax coding can improve household resilience, reduce money-related stress, and support groups more likely to be affected by tax inaccuracies, including lower-paid, younger, and variable-hours workers.
Governance impact
Offering tax review support demonstrates duty of care beyond statutory minimums, improves trust, and can reduce the risk of disputes, hardship, and reputational issues linked to tax errors.
Ways to evidence impact
Track measurable outcomes
- Number of employees supported
- Total value of overpayments identified or refunded
- Changes in wellbeing, engagement, or financial stress indicators
Support wider responsibility goals
- Fair and transparent pay practices
- Financial inclusion and reduced inequalities
- Visible commitment to responsible employment
UN Sustainable Development Goals
Aligned with recognised outcomes that matter to employers.
This proposition maps naturally to wellbeing, fairness, decent work, and reduced inequality goals.
No Poverty
Helps employees keep more of their earned income.
Good Health & Wellbeing
Reduces financial stress and anxiety.
Decent Work
Supports fair pay and financial empowerment.
Reduced Inequalities
Particularly benefits lower-income groups.
Strong Institutions
Builds confidence in fair and accurate tax administration.
FAQ
Common questions from employers.
Will this create extra work for us?
NO - Our service is delivered directly to employees and fully managed by CheckMyTax, so there is no need for payroll or HR teams to be involved.
We provide dedicated customer support by email and phone, guiding employees through the entire process from start to finish.
In Fact - A key benefit of the service is that it reduces internal workload by giving employees direct access to tax experts for their queries. This helps cut down on ad hoc questions, investigations, and follow-up work for payroll and HR teams.
If you find an issue will the employee think we have made an error?
NO - We make it clear throughout our content and communications that employers are not responsible for checking individual tax accuracy and are not in a position to do so.
We also explain that employers are legally required to deduct tax based on the information provided by HMRC, whether that information is correct or not. This ensures employees understand that any issues identified relate to HMRC records or personal circumstances, not employer error.
Can’t employees do this themselves?
Yes, employees can review and claim refunds themselves - but it’s often complex, time-consuming, and easy to get wrong. That’s why people prefer a professional review to ensure accuracy and peace of mind.
If an employee is determined, well-informed, and has plenty of patience, they can attempt to review their tax records and claim a refund directly through HMRC. However, doing so successfully requires a detailed understanding of what to check across multiple tax years.
They would need to:
- Review up to four years of tax records in detail
- Identify all allowances and reliefs they were entitled to
- Spot potential errors made by HMRC
- Know exactly what questions to ask HMRC - and how to interpret the responses
This also assumes a strong understanding of PAYE rules, as HMRC guidance is not always reliable.
Even if an employee successfully secures a refund, there are still risks:
- Overpayments may need to be repaid later, even if already spent
- Underpayments are more common - meaning employees could receive less than they’re actually owed
- If incorrect information is provided, the responsibility typically falls on the individual, not HMRC
Another important consideration rarely mentioned by “DIY” tax guides is that when you ask HMRC to review your records, they may discover you owe them money. Sometimes they’re right but we regularly see cases where the amount they demand is significantly inflated. In fact, over half of the underpayment cases we review turn out to be wrong. Without expert help, you may have little choice but to pay the amount they demand, which they can simply deduct from future wages.
Remember we will always discuss an underpayment case with the customer - not HMRC
What if an employee owes tax (Underpaid) ?
This is actually quite rare, only occurring in around 1% of reviews. If we believe an employee may have underpaid tax, we inform them directly - we do not notify HMRC.
Where a possible underpayment is identified, we include full details within the employee’s tax report, along with clear advice and practical guidance on how to deal with it. We always encourage employees to address any underpayment as soon as possible, as HMRC can apply interest and penalties if they identify it first, which can quickly add up. Our review helps employees stay ahead of the situation and deal with it proactively.
Do you deduct anything from refunds?
Absolutely not. Our paid-for service covers all of our costs in full, including our detailed written report, claim pack, and ongoing customer support.
If a tax refund is due following our review, it will be sent directly to the employee by HMRC, we never take a percentage or make any deductions.
If the employee has chosen to upgrade to our Review and Correct service, the refund may first be sent to us. This allows us to carefully check that the amount is accurate and to challenge HMRC if anything has been missed. Once confirmed, we forward the full refund to the employee.
We do not deduct anything from refunds - ever.
What if the employee doesn’t want to deal with HMRC?
That’s completely understandable - many people find dealing with HMRC time-consuming, confusing, or simply something they’d rather avoid.
The good news is they don’t have to handle it themselves.
Employees can upgrade to our Review and Correct service, where we take care of the entire process on their behalf. This means we:
- Act directly with HMRC for them – no need for the employee to make calls, write letters, or chase responses
- Submit all necessary claims and corrections – ensuring everything is completed accurately and efficiently
- Handle all correspondence – we deal with HMRC queries, requests, and follow-ups
- Check and verify any refund – making sure the full amount owed is recovered
- Challenge HMRC if needed – we continue liaising until we’re satisfied everything has been resolved
With this fully managed service, the employee can simply provide their information and leave the rest to experienced professionals. It removes the stress, reduces the risk of errors, and ensures their tax affairs are handled correctly from start to finish.
Start the conversation
Offer a benefit that improves take-home pay and strengthens your wellbeing strategy.
Add expert tax reviews to your employee benefits, wellbeing, payroll, or ESG programme and give your people practical support where it can make a real difference.
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