The cost of payroll errors calculator: How to reduce payroll errors  

Done well, payroll builds trust, but on the flip side, mistakes in payroll can damage the employee experience and incur massive penalties.  

With that in mind, the findings from the Global Payroll Association are all the more concerning. 

Their research found that a quarter of UK PAYE employees have received an incorrect pay cheque from their employer, and of those, 78% were underpaid. 

To help you reduce payroll errors, we’ve covered the top risks, showcasing how software can help. 

In this blog, you’ll also find a handy calculator that helps illustrate the financial consequences of payroll errors. 

Calculator: How much does a payroll error cost employers? 

Payroll health tool

Cost of payroll errors

Enter numbers you already know. We’ll calculate the true annual cost of payroll mistakes to your organisation.

Your organisation

How many employees are on payroll?

What is your average employee salary? More information Use your median or most common salary — not your highest earner.

£

Queries & corrections

How many payroll queries do you receive per month? More information Include emails, calls, and messages from employees about their pay — whether or not they turn out to be errors.

Roughly what proportion turn out to be an actual error? More information Queries that turn out to be correct still cost time — but only confirmed errors feed the cost calculation.

10% 25% 33% 50% 70%

What is the payroll manager's annual salary? More information Used to calculate the raw hourly cost of time spent on errors. Defaults to £35,000 if left unchanged.

£

On average, how long does it take to fully resolve one error? More information Include time investigating, correcting the payroll, communicating with the employee, and any emergency payment runs.

Under 1 hour 1–2 hours Half a day A full day or more

People & retention

How many employees left your organisation last year?

What does it typically cost to replace one employee? More information Includes recruitment fees, onboarding, and lost productivity during ramp-up.

Less than 25% of their salary Around 50% of their salary Around 100% of their salary Over 150% (senior or specialist roles)

Calculate

Estimated annual cost — HR & payroll team time

—

Adjust the inputs to calculate your estimated cost.

Summary Breakdown Churn risk Churn

—

Confirmed errors / year

—

HR hrs on errors / year

—

HR hrs on non-error queries

—

Cost per confirmed error

—

View payroll solutions Speak to an expert Save as PDF

Additional risk factors — not included in the calculation above

Emergency CHAPS payments

If payroll errors require immediate correction outside of the normal pay run, same-day CHAPS payments are typically used. Based on — confirmed errors per year, you could face up to — in emergency payment transaction fees. Exact cost varies by provider — check with your bank. Source: Bank of England — CHAPS.

HMRC RTI late filing penalties

Based on your employee count, a single late Full Payment Submission (FPS) would incur the following monthly penalty under Schedule 55:

Employee count	Monthly penalty

If a submission remains outstanding for more than 3 months, an additional penalty of 5% of tax and NI due applies, with further 5% charges at 6 and 12 months. HMRC does not penalise the first late submission in a tax year, and a 3-day grace period applies. Source: HMRC PAYE Manual — PAYE5065.

Fair Work Agency — from 7 April 2026

The Fair Work Agency (FWA) launched on 7 April 2026 under the Employment Rights Act 2025, consolidating enforcement of National Minimum Wage, holiday pay, Statutory Sick Pay, and agency worker rights into a single body with over 550 inspectors.

Key enforcement powers: The FWA can conduct proactive, unannounced workplace inspections without a worker complaint. It can inspect payroll records going back six years. Where underpayment is found, the standard penalty is 200% of the underpaid amount, capped at £20,000 per worker — reduced to 100% if paid within 14 days. Enforcement costs are also recovered from the employer.

Public naming: Non-compliant employers are listed publicly by the government — creating reputational exposure beyond the financial penalties.

Payroll errors that result in underpayment of NMW, holiday pay, or statutory payments are directly within the FWA’s remit. Source: Fair Work Agency Enforcement Policy Statement, 7 April 2026 (GOV.UK).

Reputational & employer brand impact

Payroll errors have a documented effect on employee trust that does not appear on a balance sheet. The GPA’s 2024 survey of 4,248 UK PAYE employees found that 46% of payroll errors were attributed to human error in the finance department. Research by Remote (2024 State of Payroll Report, covering UK, US, and Germany) found that 32% of employees who experienced a payroll error became more cautious of or lost trust in their employer. These effects influence recruitment pipeline, Glassdoor ratings, and employer brand — costs that are real but not calculable from the inputs above.

Methodology notes

This calculator computes HR and payroll team time costs only, using the payroll manager salary entered above (defaulting to £35,000 / £20.59/hr at 1,700 working hours), with no multiplier applied. The calculation covers: (1) confirmed errors per year × resolution time × hourly rate; (2) non-error queries × an estimated 15 minutes handling time × hourly rate. The 15-minute non-error query assumption is an internal estimate, not an externally verified figure.

Churn, HMRC penalties, FWA exposure, and reputational damage are presented as contextual risk information only and are not included in the headline figure.

Why payroll errors happen

Mistakes in payroll are rarely due to carelessness. More often, errors are a consequence of the tools you rely on. 

Manual payroll processes

Manual processes remain one of the largest contributors to payroll errors.  

Pay cycles run through more than twenty distinct processes, most of which are repetitive and rule-based. 

Every manual touchpoint is another opportunity for a typo, a missed update or a duplicated record to slip through. 

Reduce payroll errors: Automation 

Automation not only reduces mistakes in payroll, but by tackling the repetitive admin, you can focus on more strategic work, like financial wellbeing and data analysis. 

Key use cases for automation include: 

• Automate submissions to HMRC 
• Auto-apply HMRC notices 
• Real-time pay calculations 
• Occupational policies 
• Payslip delivery 
• Seamless payment distribution 
• Autopilot for unchanged payrolls 

Lack of integration with HR

When payroll and HR operate in silos, the risk of errors magnifies.  

Our recent HR research found that, on average, half a working day (3.4 hours) is lost each week to poorly integrated systems, and only 28% have fully or largely integrated platforms in place.  

CIPP describes this as a fragmented landscape, citing a lack of integration as a key challenge plaguing payroll professionals.  

Reduce payroll errors: Integrated HR and payroll software   

By integrating HR and payroll software, you reduce the need for duplication and manual intervention. 

For example:   

• If maternity is registered in the HR software, it becomes maternity pay in payroll.  
• If an employee submits any expenses with receipts via the self-service app, it then goes to approval with the line manager and automatically flows into the payroll software. 
• If an employee updates their bank details in the HR software, it automatically moves through into payroll. 

To facilitate software integration, your HR and payroll systems use an Application Programming Interface (API). 

Think of an API as a digital bridge that enables your software to exchange information.

Difficulties keeping up with legislation

Payroll legislation changes constantly. 

Each April, we see a wave of changes to thresholds and National Minimum Wage (NMW)/National Living Wage (NLW), which the CIPP describes as a complex area of legislation. 

However, the Employment Rights Act 2025 has added further complexity. 

Headline payroll updates from the first wave of Employment Rights Act 2025 changes include: 

• Statutory Sick Pay (SSP) is payable from day one of absence. 
• The removal of the Lower Earnings Limit for SSP. 
• Day-one rights to paternity and unpaid parental leave. 

It doesn’t stop there, with more changes from the Employment Rights Act 2025 coming later this year and in 2027.

Reduce payroll errors: Software you can rely on  

The software you use should give you peace of mind, not be an added stress. 

Vendors, such as IRIS, ensure their payroll software is updated ahead of any legislative changes. 

Whether it’s rate changes or something bigger like the Employment Rights Act, compliant software is a bare minimum. 

The Fair Work Agency

As part of the Employment Rights Act, a new Fair Work Agency (FWA) was launched. 

David Kisiaky, Senior Manager of Product Management, offered some valuable perspective on the FWA during our recent webinar: “The Fair Work Agency is being brought in to amalgamate compliance and policy agencies. 

“Now, if the Fair Work Agency comes into your business, they’ll want to know more than what initially brought them in, so you need to have your records right. 

“The requirements for keeping some records can go up to six years, plus the current tax year.” 

The consequences of payroll errors  

The consequences of payroll errors are rarely the mistake itself. 

Practical impact: Wasted time 

Correcting an error is rarely quick. 

Every error that needs correcting is productive time lost during the working day. 

When multiplied across every impacted employee and repeated every time a recurring error slips through, it adds up to a huge amount of wasted time. 

Financial risk: Fines 

Under UK law, employers are required to correct underpayments, and HMRC has broad powers to investigate and enforce this compliance.  

Payroll non-compliance carries the risk of six-year HMRC arrears, penalties of up to 200% of the underpayment, a Fair Work Agency investigation and public naming and shaming. 

One CIPP case study details a UK charity facing potential liabilities of up to £500,000 from a single NMW investigation. 

It’s worth noting that overpayments also carry risk, as recovering overpaid wages from employees is legally complex. 

Employers must follow a clear process and cannot simply deduct amounts without consent, meaning even an accidental overpayment can become a protracted dispute. 

Reputational risk: Disgruntled employees

Payroll errors have a documented effect on employee trust that doesn’t appear on a balance sheet.  

Mistakes in payroll influence the recruitment pipeline, Glassdoor ratings and employer brand. 

Research by Remote found that 32% of employees who experienced a payroll error became more cautious or lost trust in their employer.  

Discover Staffology Payroll

If you’re ready to make a change and take your payroll to the next level, look no further than Staffology Payroll. 

Staffology Payroll is built to handle complexity, so payroll just runs without the usual hassle, which is why 53,000+ employers trust the software to pay over 1.4 million employees. 

In our new software brochure, you’ll discover how Staffology Payroll can transform the way you handle payroll, covering: 

• Staffology Payroll features 
• Benefits of Staffology Payroll 
• Implementation
• Frequently asked questions (FAQs)