Common Payroll Errors and How Payroll Software Can Fix Them

Team Nomi

Nov 07, 2025
3 minutes read

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Payroll is one of those tasks that seems straightforward… until something goes wrong.  Up to 88% of UK businesses have experienced payroll errors and 1 in 4 employees have received incorrect payslips.

A single mistake can lead to unhappy employees, compliance issues or even HMRC penalties. For small businesses and accounting firms managing multiple clients, accuracy is everything.

Fortunately, payroll software is transforming how businesses handle pay runs, helping to reduce errors, save time and improve compliance. Here’s a look at the most common payroll mistakes and how payroll software helps fix them.

1. Miscalculating Pay and Deductions

Manual payroll processing leaves plenty of room for mistakes. Especially when dealing with varying pay rates, overtime or bonuses. Incorrect deductions for tax, pensions or National Insurance are also easy to miss.

How payroll software helps:

Modern payroll software automatically calculates gross pay, tax and deductions based on real-time data. It updates in line with HMRC requirements, ensuring every payslip is accurate and compliant.

2. Missing HMRC Deadlines

Submitting payroll information late or forgetting to send a Full Payment Submission (FPS) can result in fines and unnecessary stress.

How payroll software helps:

Most payroll tools include built-in reminders and automated submissions to HMRC. Once you finalise your payroll, the system sends the data directly, ensuring nothing slips through the cracks.

3. Incorrect Employee Classification

Mistaking an employee for a contractor (or vice versa) can cause major compliance issues. Misclassification affects tax, National Insurance and even employment rights.

How payroll software helps:

Payroll platforms store clear employee records. They automatically apply the correct tax codes and contribution settings for each type of worker. This reduces the risk of errors and keeps everything audit-ready.

4. Errors in Leave and Sick Pay Calculations

Tracking annual leave, sick pay and maternity or paternity pay manually can easily lead to underpayments or overpayments.

How payroll software helps:

Integrated leave management features record time off automatically and adjust payslips accordingly. You can view entitlement balances at a glance. No more juggling spreadsheets or missed adjustments.

5. Data Entry Mistakes

Simple typos, like an extra zero or a wrong date, can cause costly mistakes. For growing businesses handling multiple employees, this risk multiplies fast.

How payroll software helps:

Payroll tools pull data directly from employee records and accounting systems, reducing manual input. Some systems even flag inconsistencies or missing information before payroll is processed.

6. Poor Record-Keeping

HMRC requires employers to keep payroll records for at least three years. Inaccurate or incomplete records can make compliance checks a nightmare.

How payroll software helps:

Cloud-based payroll software automatically stores and organises all payroll data. So you have a secure, searchable archive that’s easy to access whenever you need it.

Payroll Software Is a Game-Changer

For small businesses and accountants, payroll errors can cost your business time and money. But the right payroll software can turn a potential headache into a simple solution.

By automating calculations, syncing with HMRC and keeping your records audit-ready, software turns payroll from a manual task into a simple, reliable workflow.

Ready to make payroll simple and stress-free? Nomi’s cloud-based payroll software helps small businesses and firms manage pay runs accurately, stay HMRC-compliant and keep employees happy, all in one easy platform.

Book a free demo and see how Nomi can help.