License & Deployment Mix: 15 tools – 1 OSS, 15 SaaS. (OSS and SaaS counts can overlap when an open-source tool also offers a vendor-hosted edition.)
What Is Payroll Software?
Payroll software automates the process of calculating employee compensation, withholding taxes, processing direct deposits, generating pay stubs, filing tax forms, and managing benefits deductions. These systems ensure employees and contractors are paid accurately and on time while maintaining compliance with federal, state, and local tax regulations.
Payroll is one of the most compliance-sensitive functions in any organization. Errors in tax withholding, late filings, or missed deadlines can result in significant IRS penalties and employee trust issues. Because of this regulatory complexity, most payroll solutions are commercial SaaS platforms that maintain tax tables, handle filing deadlines, and assume liability for accuracy.
The information on these pages was researched by a combination of human review and large language models. To suggest an addition or correction, please contact us. Prepared by Rhodium Systems Inc., author of the ResorsIT platform — a unified IT operations management platform for IT teams and MSPs that integrates a curated suite of open-source, commercial, and SaaS applications into a single system with shared identity, single sign-on, access control, and a common audit trail. Use this catalogue only as a starting point for your own research, and review any tool carefully against your own requirements before relying on it. Catalogue data version 2026.197.
Comparison
Evaluation Overview
This evaluation covers payroll tools ranging from a single open-source HR suite with a payroll module (OrangeHRM) to full-service commercial payroll platforms, international EOR providers, and PEO services. The focus is on tools relevant to SMB and mid-market organizations.
Use Cases
Three primary use cases drive this evaluation:
- Internal payroll – US payroll processing, tax filing, benefits deductions
- Customer payroll integration – API/webhook connectivity for HR data sync and lifecycle automation
- Monitoring – SaaS health monitoring for payroll service endpoints
SSO / OIDC Comparison
OIDC is the preferred SSO protocol; the notes below assume Authentik as the IdP. SCIM is valuable for payroll systems as they contain authoritative employee compensation data.
| Tool | OIDC | SAML | SCIM | Authentik Notes |
|---|---|---|---|---|
| OrangeHRM | No | No | No | Reverse-proxy or LDAP |
| Gusto | No | No | No | Not compatible |
| ADP | Yes | Yes | Yes | OIDC + SCIM (full) |
| Paychex | No | Yes | No | SAML IdP |
| Rippling | Yes | Yes | Yes | OIDC + SCIM (full) |
| Paylocity | No | Yes | Yes | SAML + SCIM |
| Paycom | No | Yes | No | SAML IdP |
| BambooHR Payroll | No | Yes | Yes | SAML + SCIM |
| OnPay | No | No | No | Not compatible |
| Square Payroll | No | No | No | Not compatible |
| QB Payroll | No | No | No | Not compatible |
| Paycor | No | Yes | No | SAML IdP |
| Deel | No | Yes | Yes | SAML + SCIM |
| Remote | No | Yes | Yes | SAML + SCIM |
| Justworks | No | Yes | No | SAML IdP |
Deployment Comparison
| Tool | Model | Self-Hosted | US | International |
|---|---|---|---|---|
| OrangeHRM | OSS + SaaS | Yes | Limited | Limited |
| Gusto | SaaS | No | Yes | No |
| ADP | SaaS | No | Yes | Yes |
| Paychex | SaaS | No | Yes | No |
| Rippling | SaaS | No | Yes | Yes |
| Paylocity | SaaS | No | Yes | Yes (limited) |
| Paycom | SaaS | No | Yes | No |
| BambooHR Payroll | SaaS | No | Yes | No |
| OnPay | SaaS | No | Yes | No |
| Square Payroll | SaaS | No | Yes | No |
| QB Payroll | SaaS | No | Yes | No |
| Paycor | SaaS | No | Yes | No |
| Deel | SaaS | No | Yes | Yes (150+) |
| Remote | SaaS | No | Yes | Yes (80+) |
| Justworks | SaaS | No | Yes | No |
Core Features
| Feature | OrangeHRM | Gusto | ADP | Paychex | Rippling | Paylocity | Paycom |
|---|---|---|---|---|---|---|---|
| Gross-to-net | Basic | Yes | Yes | Yes | Yes | Yes | Yes |
| Direct deposit | No | Yes | Yes | Yes | Yes | Yes | Yes |
| Tax filing | No | Yes | Yes | Yes | Yes | Yes | Yes |
| W-2 / 1099 | No | Yes | Yes | Yes | Yes | Yes | Yes |
| Pay stubs | Basic | Yes | Yes | Yes | Yes | Yes | Yes |
| Garnishments | No | Yes | Yes | Yes | Yes | Yes | Yes |
| Multi-state | No | Yes | Yes | Yes | Yes | Yes | Yes |
| Feature | BambooHR | OnPay | Square | QB Payroll | Paycor | Deel | Remote | Justworks |
|---|---|---|---|---|---|---|---|---|
| Gross-to-net | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Direct deposit | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Tax filing | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| W-2 / 1099 | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Pay stubs | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| Garnishments | Yes | Yes | Basic | Yes | Yes | Yes | Yes | Yes |
| Multi-state | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Advanced Features
| Feature | OrangeHRM | Gusto | ADP | Paychex | Rippling | Paylocity | Paycom |
|---|---|---|---|---|---|---|---|
| Intl payroll | No | No | Yes | No | Yes | Limited | No |
| Benefits admin | No | Yes | Yes | Yes | Yes | Yes | Yes |
| T&A integration | Basic | Yes | Yes | Yes | Yes | Yes | Yes |
| On-demand pay | No | Yes | Yes | Yes | Yes | Yes | Yes |
| PEO services | No | No | Yes | Yes | No | No | No |
| Contractor pay | No | Yes | Yes | Yes | Yes | Yes | Yes |
| Feature | BambooHR | OnPay | Square | QB Payroll | Paycor | Deel | Remote | Justworks |
|---|---|---|---|---|---|---|---|---|
| Intl payroll | No | No | No | No | No | Yes | Yes | No |
| Benefits admin | Yes | Yes | No | No | Yes | Yes | Yes | Yes |
| T&A integration | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| On-demand pay | No | No | No | No | Yes | Yes | Yes | No |
| PEO services | No | No | No | No | No | EOR | EOR | Yes |
| Contractor pay | No | Yes | Yes | Yes | Yes | Yes | Yes | No |
Compliance Features
| Feature | OrangeHRM | Gusto | ADP | Paychex | Rippling | Paylocity | Paycom |
|---|---|---|---|---|---|---|---|
| Auto tax filing | No | Yes | Yes | Yes | Yes | Yes | Yes |
| ACA reporting | No | No | Yes | Yes | Yes | Yes | Yes |
| Workers’ comp | No | Yes | Yes | Yes | Yes | Yes | Yes |
| Feature | BambooHR | OnPay | Square | QB Payroll | Paycor | Deel | Remote | Justworks |
|---|---|---|---|---|---|---|---|---|
| Auto tax filing | Yes | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
| ACA reporting | No | No | No | No | Yes | No | No | Yes |
| Workers’ comp | No | Yes | No | No | Yes | No | No | Yes |
API & Integration
| Tool | REST API | Webhooks | Accounting Sync | Embedded |
|---|---|---|---|---|
| OrangeHRM | Yes | No | No | No |
| Gusto | Yes | Yes | QB, Xero | Yes |
| ADP | Yes | Yes | Many | Yes |
| Paychex | Yes | Limited | QB, Sage | No |
| Rippling | Yes | Yes | QB, Xero, NetSuite | Yes |
| Paylocity | Yes | Yes | Many | No |
| Paycom | Limited | No | GL export | No |
| BambooHR | Yes | Yes | QB, Xero | No |
| OnPay | Yes | No | QB, Xero | No |
| Square | Yes | Yes | QB | No |
| QB Payroll | Yes | Yes | Native | No |
| Paycor | Yes | Yes | Many | No |
| Deel | Yes | Yes | QB, Xero, NetSuite | Yes |
| Remote | Yes | Yes | QB, Xero, NetSuite | Yes |
| Justworks | Limited | No | QB, Xero | No |
Monitoring Integration
| Tool | Telegraf | Fluent Bit | Grafana |
|---|---|---|---|
| OrangeHRM | DB metrics | App logs | Self-hosted dashboard |
| Gusto | API polling | Webhook logs | SaaS health |
| ADP | API polling | Webhook logs | SaaS health |
| Paychex | API polling | App logs | SaaS health |
| Rippling | API polling | Webhook logs | SaaS health |
| Paylocity | API polling | Webhook logs | SaaS health |
| Paycom | API polling | App logs | SaaS health |
| BambooHR | API polling | Webhook logs | SaaS health |
| OnPay | API polling | App logs | SaaS health |
| Square | API polling | Webhook logs | SaaS health |
| QB Payroll | API polling | Webhook logs | SaaS health |
| Paycor | API polling | Webhook logs | SaaS health |
| Deel | API polling | Webhook logs | SaaS health |
| Remote | API polling | Webhook logs | SaaS health |
| Justworks | API polling | App logs | SaaS health |
Pricing Comparison
| Tool | Model | Base Cost | Per-Employee | Notes |
|---|---|---|---|---|
| OrangeHRM | OSS / SaaS | Free (OSS) | – | Payroll module limited |
| Gusto | SaaS | $40/mo | $6-12/person | Plans: Simple, Plus, Premium |
| ADP | SaaS | Custom | Custom | RUN (SMB), Workforce Now (mid) |
| Paychex | SaaS | $39/mo | $5/person | Essentials, Select, Pro |
| Rippling | SaaS | $8/mo | per person | Modular pricing |
| Paylocity | SaaS | Custom | Custom | Mid-market focus |
| Paycom | SaaS | Custom | Custom | Single-app HCM |
| BambooHR | SaaS | Custom | per person | Add-on to BambooHR |
| OnPay | SaaS | $40/mo | $6/person | Single flat plan |
| Square | SaaS | $35/mo | $6/person | Integrates with Square POS |
| QB Payroll | SaaS | $37.50/mo | $6/person | Core, Premium, Elite |
| Paycor | SaaS | Custom | Custom | Mid-market focus |
| Deel | SaaS | $0-49/mo | per person | EOR from $599/employee/mo |
| Remote | SaaS | $0-50/mo | per person | EOR from $599/employee/mo |
| Justworks | SaaS | $59/mo | per person | PEO model, includes benefits |
Pricing as of early 2026; contact vendors for current quotes.
Suitability Summary
| Tool | Internal | SMB Customers | Mid-Market | International |
|---|---|---|---|---|
| OrangeHRM | Not rec. | Not rec. | Not rec. | Not rec. |
| Gusto | Rec. | Rec. | Limited | No |
| ADP | Overkill | Good | Rec. | Rec. |
| Paychex | Possible | Good | Rec. | No |
| Rippling | Rec. | Good | Good | Good |
| Paylocity | Overkill | Possible | Rec. | Limited |
| Paycom | Overkill | Possible | Rec. | No |
| BambooHR | Possible | Good | Possible | No |
| OnPay | Possible | Rec. | Limited | No |
| Square | Not rec. | Niche | Not rec. | No |
| QB Payroll | Possible | Good | Limited | No |
| Paycor | Possible | Possible | Rec. | No |
| Deel | Intl only | Limited | Good | Rec. |
| Remote | Intl only | Limited | Good | Rec. |
| Justworks | Possible | Good | Limited | No |
Rec. = Recommended | Intl only = recommended only for international payroll needs
Tools
15 tools.
ADP
ADP (Automatic Data Processing) is the largest payroll and HCM provider globally, serving over 1 million clients across 140 countries. Founded in 1949, ADP processes payroll for approximately one in six US workers.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: OIDC, SAML
BambooHR Payroll
BambooHR Payroll is a payroll add-on to the BambooHR HR platform, designed for small and mid-sized businesses. BambooHR itself is one of the most popular SMB HRIS platforms, serving over 33,000 companies.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: SAML
Deel
Deel is a global payroll and employer of record (EOR) platform that enables companies to hire employees and contractors in over 150 countries without establishing local legal entities.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: SAML
Gusto
Gusto is a cloud-based payroll and HR platform designed primarily for small and mid-sized businesses in the United States.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
Justworks
Justworks is a Professional Employer Organization (PEO) that provides payroll, benefits, HR, and compliance services through a co-employment model.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: SAML
OnPay
OnPay is an affordable, full-service payroll platform designed for small businesses. Founded in 2011, OnPay has earned recognition for its straightforward pricing and comprehensive feature set.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
OrangeHRM
OrangeHRM is an open-source human resource management system with a payroll module available in its Advanced and Enterprise editions.
License: GPL-2.0-only (OSS) · Kind: web · Deploy: native, saas · SSO: none
Paychex
Paychex is one of the largest payroll and HR services providers in the United States, serving over 740,000 clients.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: SAML
Paycom
Paycom is a single-application HCM platform that provides payroll, HR, talent management, time and labor, and benefits administration in a unified system.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: SAML
Paycor
Paycor is a cloud-based HCM platform that provides payroll, HR, benefits, talent management, and workforce management for mid-market organizations.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: SAML
Paylocity
Paylocity is a cloud-based payroll and HCM platform focused on the mid-market segment (50-5,000 employees). Founded in 1997 and publicly traded (NASDAQ: PCTY), Paylocity serves over 36,000 clients.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: SAML
QuickBooks Payroll
QuickBooks Payroll is Intuit’s payroll solution, designed to integrate natively with QuickBooks Online accounting software.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
Remote
Remote is a global employment platform that provides employer of record (EOR), global payroll, contractor management, and immigration services.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: SAML
Rippling
Rippling is a modern workforce platform that unifies IT, HR, and payroll management in a single system. Founded in 2016 by Parker Conrad (co-founder of Zenefits), Rippling has grown rapidly and is valued at over $13 billion.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: OIDC, SAML
Square Payroll
Square Payroll is a payroll product from Block, Inc. (formerly Square, Inc.), designed to integrate with the Square ecosystem of point-of-sale, payments, and business management tools.
License: Proprietary (proprietary) · Kind: web · Deploy: saas · SSO: none
