Replacement Guide

How to Build Your Own Paychex

Replace Paychex with a custom build. Confidently Manage HR, Payroll, and Benefits

Weekend Project
43 features1 integrationsOne weekend

Estimated Timeline

Based on 43 features at Weekend Project difficulty, expect about One weekend with AI-assisted development.

1
Setup & scaffolding
2 hours
2
Core features
4-6 hours
3
Polish & deploy
2 hours

Recommended Tech Stack

Next.js 14

Full-stack React framework with API routes and server components

Supabase

PostgreSQL database, auth, and real-time subscriptions

Tailwind CSS

Utility-first styling for rapid UI development

Prisma

Type-safe ORM for complex relational data models

Key Features to Replicate

Top features across 8 categories. See all 43 features

Insurance(8 features)

Business Insurance

Complete business coverage including multiple insurance types

Business Owner Policy (BOP)

Business owner policy insurance bundling

Commercial Auto Insurance

Commercial auto insurance coverage

Cyber Liability Insurance

Cyber liability insurance coverage

Employment Practices Liability Insurance (EPLI)

EPLI coverage for employment-related claims

+3 more in this category

Benefits Administration(5 features)

401(k) & Retirement Plans

401(k) plan administration and retirement benefits management - serving 90,000+ 401(k) plans

Benefits Administration

Easily manage company benefits in a simple, integrated platform

Health Insurance

Comprehensive health insurance benefits offerings

Lifestyle Benefits

Lifestyle benefit options for employee wellbeing

Voluntary Benefits

Voluntary benefits offerings for employees

Recruitment & Onboarding(5 features)

AI-Assisted RecruitingAIPremium

Cutting-edge AI-assisted recruiting tool through Paychex Recruiting Copilot in partnership with Findem

Applicant Tracking

Applicant tracking system for recruitment management

Background Checks

Background check services for candidate screening

Employee Onboarding

Streamlined employee onboarding processes

Talent Management

Recruit, hire, and develop employees with integrated talent management tools

Payroll(3 features)

Midsize to Enterprise Payroll

Payroll solutions for businesses with 20+ employees

One Employee Payroll

Payroll solutions for self-employed individuals and single-employee businesses

Small Business Payroll

Payroll solutions specifically for small businesses with 1-19 employees

Analytics & Reporting(2 features)

HR Analytics & Reporting

Analytics and reporting tools for HR data and insights

Workforce Planning

Time tracking and analytics for workforce planning and scheduling

Compliance(2 features)

State Unemployment Insurance (SUI)

State unemployment insurance administration

Tax Compliance Services

Tax compliance support and services

Core Platform(2 features)

Paychex Flex

Cloud-based all-in-one platform for payroll, HR, time and attendance, and benefits management

Paychex Oasis

Alternative platform offering from Paychex

Employee Management(2 features)

Employee Engagement

Employee engagement software to improve workplace culture

Employee Self-Service

Allow employees to access payroll information and manage their own accounts

Cost Calculator

Pricing data not available for Paychex. Check their website for current pricing.

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