Payroll Guide
Payroll software for Thai SMEs: what to check before choosing
Short answer
Good payroll software for an SME should show where each amount came from, who confirmed it and which file or document comes next—not only calculate net pay.
1. Start from the pay patterns the company really uses
Check monthly salary, daily wage, pay cycles, payroll groups, effective dates and mid-year rate changes without overwriting history.
2. Close attendance, leave and OT before payroll handoff
The system should surface missed punches, time corrections, leave and OT that are still unapproved so managers and HR can close exceptions first.
3. Earnings and deductions need a source and effective date
Separate recurring earnings, one-time items, bonuses, allowances and deductions together with the owner, supporting record and pay period.
4. Review tax, social-security and company document steps
Ask the vendor to demonstrate withholding-tax, contribution, report and export steps using representative company data, then confirm current requirements with official sources or a qualified adviser.
5. Bank files and payslips need review points
Test payment files, total checks, approval before bank submission and the employee view that limits each person to their own payslip.
6. Keep a history of changes and recalculation
The system should record item changes, recalculation, approval and document release so the team can explain differences without guessing across file versions.
Payroll software comparison checklist
Ask every vendor the same questions and request working-product evidence instead of comparing feature labels alone.
| Area | Question to ask | Evidence to request |
|---|---|---|
| Pay patterns | How are monthly, daily and effective-dated pay changes handled? | Demonstrate at least two employee patterns and one rate change. |
| Attendance and OT | How are unapproved records kept out of payroll? | Test missed time, a correction, leave and pending OT. |
| Earnings and deductions | Can the team trace each amount to its item and owner? | Open recurring, one-time and corrected item history. |
| Tax and social security | Do reviews, reports and exports match how the company works? | Use representative company data and check current official requirements. |
| Bank and payslips | Who reviews totals, who approves and what can employees see? | Test one payment file and sign in to the employee view. |
| History and correction | Can recalculation differences and editors be explained later? | Change one item, recalculate and inspect the before-and-after history. |
Implementation checklist
- Complete employee, employment-type and bank details
- Support monthly salary and daily wage patterns used by the company
- Set a cut-off for attendance, leave and OT
- Separate recurring, one-time and deduction items with effective dates
- Review withholding-tax and social-security readiness for the company's process
- Test bank files, reports and payslips with one realistic pay cycle
- Separate payroll preparer, reviewer and approver access
- Keep change history and let employees open only their own payslips
Common mistakes to avoid
Changing payroll data at the last minute without history
Sharing payroll files beyond approved users
Keeping time, OT and payslips outside the trusted HR record
Who should own each part
HR
Maintains employee, employment and effective-date changes in a controlled source.
Time owners
Close unresolved attendance, leave and OT exceptions before payroll handoff.
Payroll
Reviews earnings, deductions, net pay and the reason for each material change.
Approver
Confirms totals and important exceptions without exposing payroll data more widely than needed.
A practical starting plan
01
Lock sources and owners
Identify the source and accountable owner for employee, time, OT, earning and deduction data.
02
Parallel-check one pay cycle
Compare results with the current method and record every material difference before replacing it.
03
Set access and sign-off
Define who views, changes and approves data, together with the cut-off for each source.
How to measure whether it works
Measure from data cut-off through payslip release, separating source-data, review and document-access problems.
Items after cut-off
Time, OT, earning or deduction records arriving after the agreed cut-off.
Unexplained differences
Changed amounts that lack an accountable owner or supporting record.
Rework cycles
Times payroll or documents must be recalculated before closing.
Post-payslip questions
Questions caused by unclear items or failed payslip access.
Sources and review note
BaanHR's content and product teams reviewed this operational guide. Legal, tax, payroll and security requirements can change, so check the latest official source or a qualified adviser before making a high-impact decision.
- Withholding Tax services and forms
Thailand Revenue Department
- Social security contribution form SSO 1-10
Thailand Social Security Office
Related HR questions
Do SMEs need a full payroll engine immediately?
Not always. Many teams first make payroll preparation accurate, compare one pay cycle and then make it the primary process.
Should payroll software connect attendance and OT?
It should connect at least enough detail to trace the source and approval status instead of copying totals from several files.
How should tax and social-security support be checked?
Ask the vendor to demonstrate the inputs, review steps, reports and exports your company uses, then confirm current requirements with official sources or a qualified adviser.
Who should see payroll data?
Limit payroll data to approved preparers, reviewers, approvers or leaders while employees see only their own payslips.
How long should an SME test payroll software?
Use realistic sample data or parallel-check at least one pay cycle so the team can see differences, exceptions and recovery steps before switching fully.
Related BaanHR pages
Next step
BaanHR
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