Tools and providers
Part of HR software vs payroll software UK: which do you need?
HR software vs payroll software UK: which do you need?
Payroll software pays and files RTI; HR software holds the employment record. Compare duties, data protection and integration before you buy both.
What to take away
- Payroll software calculates pay, deducts tax and NI, and files PAYE data to HMRC under real time information (RTI). HR software holds the wider employment record.
- Most employers below roughly 50 staff run payroll software with spreadsheets or a light HR module, not two full systems.
- The split matters under UK GDPR because payroll and HR data are both personal data, handled by different teams with different retention habits.
- Integration pays when starters, leavers and absence move between the two systems every week.
- Buy for the statutory duty first, then for the workflow you repeat most often.
What each system actually does
Payroll software answers one question each period: what does each person take home, and what must be deducted and reported? It holds tax codes, NI category letters, student loan plans, pension contributions and the RTI submission itself.
HR software holds the employment relationship. Contracts, job titles, holiday entitlement, absence and leaver records live there. The Employment Rights Act 1996 requires written particulars, and that document normally sits in the HR system. Employers weighing holiday and absence tools against a suite can start with this guide to HR software for small business.
The overlap is the employee record: name, address, NI number, start date and pay rate appear in both. That duplication is where integration work starts, and where it usually goes wrong.
The data split under UK GDPR
Both systems process personal data, so the same rules apply to each. The ICO's UK GDPR guidance covers lawful basis, retention and subject access, and nothing changes because a file sits in a payroll tool rather than an HR one.
Employment data is not special category data by default. Health information behind sickness absence is, and it needs a separate condition for processing, so keep medical notes out of any payroll export.
Payroll access is often wider than it should be, because finance teams need the figures. Set roles so only named people see bank details and salary lines.
RTI filing and pension duties
Every PAYE scheme reports payments on or before payday under RTI. That duty belongs to the payroll software or the bureau running it, not to an HR tool, which is why payroll deadlines rarely move to suit an HR project.
Auto-enrolment sits across both. Assessing workers and deducting contributions is payroll work; re-enrolment and staff communications follow whoever owns the HR calendar. The duties come from the Pensions Act 2008. Employers that want the assessment inside the pay run can compare payroll software with auto enrolment options rather than bolting a module onto an HR tool.
If one system handles both, keep the pension assessment in the payroll engine. HR tools that store pension status without recalculating it each period drift out of date quickly.
Comparing HR and payroll software side by side
The table compares the two by what they hold, who owns them and what they file. Use it to spot which gaps you are actually buying.
| Question | Payroll software | HR software |
|---|---|---|
| Core output | Net pay, payslips, RTI submission | Employee record, contracts, absence |
| Statutory driver | PAYE, NI, student loans, pension deductions | Written particulars, working time, right to work |
| Typical owner | Finance or payroll manager | HR or operations lead |
| Sensitive data held | Bank details, NI numbers, salary | Contracts, absence and health notes |
| Reporting | Full Payment Submission, P60, P11D data | Headcount, turnover, absence rates |
| Change risk | Rate and tax code updates each tax year | Policy and process changes |
Deciding between one system and two
Work through four checks before you buy either product.
- Count the moves. If starters, leavers and absence changes cross between payroll and HR more than about twenty times a month, integration earns its fee.
- Check the payroll engine first. No HR module compensates for a payroll tool that mishandles NI categories or pension deductions.
- Ask what leaves on exit. A suite must export the whole employee record in a usable format, or you cannot move later.
- Price the renewal, not the first year. Payroll fees rise with employee bands; HR seats often price per user.
Integration usually means one vendor holds the employee record and pushes changes into the pay run. Agree which direction data travels, and who fixes a mismatch.
Common questions
Do I need HR software if I already have payroll software?
Usually not at the start. Payroll software plus a shared drive covers contracts and holiday for a small team, and the payroll record already holds personal data you must keep accurate.
Can HR software run payroll?
Sometimes, but check whether the payroll engine is built in or supplied through a partner. The engine decides whether RTI, NI categories and pension deductions are handled correctly.
Is integrated HR and payroll software cheaper than two systems?
Often cheaper in staff time, rarely cheaper in licence fees. Duplicate entry costs hours each month, while a suite costs more per employee but removes re-keying.
Where should the data split sit?
Payroll keeps bank details, salary and deductions; HR keeps the employment record. Restrict bank detail access to named payroll staff and log who exports it.