Online Payroll Software: Cloud vs. On-Premise

Online payroll software runs in the cloud and does not need to be installed on a specific computer. It can be accessed from anywhere via a web browser or mobile device, while the provider handles system and regulatory updates.

 

The three clearest differences from installed software are that data is not tied to a single computer, tax and Social Security rate updates do not require a new version to be installed, and multi-branch payroll does not require files from different locations to be consolidated.

 

This article compares the two models based on real monthly payroll tasks and explains which organizations should move to the cloud and which can continue using their existing systems.

 

What Is Online Payroll Software and How Does It Work?

online payroll software (Human Resource Management Software) is a cloud-based payroll system that brings HR tasks together in one place—from payroll calculations, withholding tax, and Social Security contributions to leave management, time attendance, and electronic payslips. Data is stored on cloud servers instead of a specific computer within the organization.

 

Online payroll software generally works in five steps:

1. Users log in through a web browser from anywhere with an internet connection.
2. Employeesclock in and outor submit leave requests through a mobile app, and the information is immediately sent to HR's online payroll system.
3. HR calculates payroll, taxes, and Social Security contributions using data consolidated in one system.
4. Employees can view their payslips and personal information through Employee Self Service
5. The online payroll software automatically updates tax and Social Security rates when regulations change, without requiring a new version to be installed.

 

How Do Cloud-Based and On-Premise Systems Differ?

Category	Cloud-Based	Installed on a Company Computer or Server
Where It Can Be Accessed	Anywhere with internet access, on computers and mobile devices	Only on the installed computer or through the organization's internal network
Tax and Social Security Rate Updates	Updated by the provider and available immediately	A new version must be installed internally or by the vendor
Multiple Branches	Data is centralized for an immediate overview	Files from each branch often need to be consolidated centrally
Payroll Staff Member Is Absent or Resigns	Other authorized users can access the system and continue the work	Work stops if the files or software are on that person's computer
Upfront Costs	Monthly or annual subscription with no server investment	Usually requires upfront licensing and server maintenance costs
Data Backup	Managed by the provider	Managed by the organization
Working During an Internet Outage	Depends on whether the system supports offline mode	Work can continue if the installed computer is operational

 

How Secure Is Payroll Data in the Cloud?

Payroll data is sensitive information that concerns many organizations when moving to the cloud. Before selecting a service, review the following four areas of security:

• Provider security standards: Choose a provider certified to standards such as ISO 27001, which covers systematic information security management.
• Data access permissions: The system should clearly define permissions—for example, HR can view all data, managers can view only their team members, and employees can view only their own information.
• Data backup: The provider should offer data backup and recovery to reduce the risk of data loss. This is safer than storing files on a single computer.

In summary, a standards-compliant cloud system with appropriate safeguards is generally more secure than storing Excel files on a regular computer that may lack encryption and backups. However, review each provider's standards and policies before making a decision.

 

Which Organizations Should Move to the Cloud—and Which Can Wait?

Consider moving to the cloud when:

• You have more than one branch or employees who do not work in the office every day.
• Only one person handles payroll, with no backup when they are absent.
• Executives or managers need to approve documents from anywhere.
• You do not have an IT team to manage servers and backups.
• You want tax and Social Security rates to update automatically without installing new versions.

 

You can continue using your existing system when:

• Your organization requires employee data to remain exclusively on its internal network.
• You already have an IT team managing servers and backups.
• Your existing system is highly customized and there is no compelling reason to change.

 

If you are choosing payroll software for a small business and want to focus on pricing and selection criteria, read [Which SME Payroll Software Is Best? How to Choose]

 

Comparison of Online Payroll Software Used in Thailand

 

Software	Deployment (Cloud or On-Premise)	Starting Price	Mobile Access	Offline Clock-In	Multi-Branch Support	Free Trial	Supports Thai Regulations
HumanSoft	Cloud	View pricing plans	✓ Mobile application available	✓	✓	30 days	✓
Tiger OpenSpace	Cloud	Contact for details	✓	Contact the provider	Contact the provider	Contact for details	✓
Bplus HRM	On-premise / Cloud	Contact for details	✓	Contact the provider	Contact the provider	Request a trial	✓
Prosoft HRMI	On-premise	Contact for details	✓	Contact the provider	Contact the provider	60 days	✓

* Information as of August 2026

 

How to Prepare When Migrating to Cloud Payroll Software

Migrating from an existing system to cloud payroll software should be done in stages to avoid disrupting the actual payroll cycle.

1. Gather employee data and historical payroll records: Import all accumulated payroll data, remaining leave balances, and year-to-date tax information into the new system before going live.
2. Choose a migration period that does not overlap with payroll closing : For example, start with the next monthly cycle instead of migrating midway through a cycle already being calculated.
3. Run parallel payroll calculations for at least one cycle: Calculate payroll in both the old and new systems, and verify that the results match before retiring the old system.
4. Train HR and employees before going live : This is especially important for self-service features such as submitting leave requests, viewing payslips, and clocking in through the app.

 

The actual timeline depends on the number of employees and the complexity of the existing data. Ask the provider to estimate the required time before setting a migration date.

 

Conclusion: Which HR Software Is Best for Thai SMEs?

Online payroll software is suitable for organizations with multiple branches, employees working outside the office, or no in-house IT team, because the provider manages regulatory updates and data backups. Organizations with data residency requirements or an existing IT team may not need to migrate yet. The decision should ultimately reflect how the organization actually operates.

 

FAQ: Frequently Asked Questions About HR Software

 

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