FullStack PEO

What FullStack PEO does

FullStack PEO is a privately held Professional Employer Organization founded in 2017 and headquartered in Indianapolis, Indiana. The company delivers fractional HR support to small and mid-sized businesses, startups, and scaleups through a co-employment model that covers payroll administration, payroll tax filings, employee handbook development, employee relations and termination support, benefits administration, ACA and workers compensation compliance, 401k multiple employer plan administration, and strategic HR consulting. Named customers span non-profit education (Teach Indy), startup accelerators (Gener8tor), technology firms (DeveloperTown, WarmUp), relocation services (MakeMyMove), and legal SMBs (MBCB Attorneys), with a stated horizontal segmentation across the Midwest and national SMB market.

The core technology stack is built on PrismHR as the primary HRIS and payroll platform, with native login-portal integrations to carrier partners including Anthem (health), Guardian (life/disability), Transamerica (401k), VSP (vision), and Omega Benefit Strategies (FSA/HSA). FullStack is CPEO-certified, ESAC-accredited, and a NAPEO member, and holds a 2025 IBJ Fast25 regional award. The 2023 acquisition of Simple IT added bundled IT management to the offering, and a Workwell Global partnership extends service capability to international Employer of Record engagements. The product surface includes two core subscription packages (Starter and Plus) plus eight add-on modules covering applicant tracking, mobile timekeeping, employee engagement, performance management, learning, and strategic HR consulting.

FullStack generates revenue through subscription-based PEO service fees structured around employee count, payroll frequency, HR projects, and employee geography, with contract terms of one or three years. Distribution is sales-led via a consultative process anchored on the company website, supplemented by SEO-optimized content (PEO Buying Guide, blog), NAPEO event participation, and a referral channel network of startup ecosystem and professional services partners. The company is founder-owned and independently operated, with only ~$960K of disclosed external capital across two small rounds (2019 and 2022), and employs between 101-250 people.

Name

FullStack PEO

Legal name

FullStack PEO

Website

https://fullstackpeo.com

Company type

Private

Founded year

2017

Operating status

Operating

Headcount range

101–250 employees

Short description

FullStack PEO is an Indianapolis-based Professional Employer Organization founded in 2017 that provides fractional HR, payroll, benefits, and compliance outsourcing to small and mid-sized businesses and startups across the Midwest and nationally, using a co-employment model built on the PrismHR platform.

Ownership category

akta.pro rank

Product category

Professional Employer Organization (PEO) Services

NAICS

Professional Employer Organizations (561330), Payroll Services (541214)

SIC

Services-Employment Agencies (7361)

akta.pro primary industry

Professional Employer Organization (PEO) / Co-Employment Services (BPACAHAB)

akta.pro secondary industries

Payroll Outsourcing & Pay Administration (Multi-country/Managed Payroll) (BPACAKAD), Full-Service Payroll Processing (BPACAIAA), Association & PEO Group Health Plans (AHP/PEO-Sponsored) (FSAIAFAH), Onboarding, Offboarding & Employee Lifecycle Administration (BPACAHAL)

Keywords

• Professional employer organization
• Outsourced HR services
• Payroll administration
• Benefits administration
• HR compliance management

Headquarters

HQ city

Indianapolis

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Technology or R&D, Marketing or Sales

Revenue model

1. PEO Services Subscription: FullStack PEO generates revenue through subscription-based PEO services, charging fees based on employee count, payroll frequency, HR projects and services, and geographic location of employees. They offer two main packages (Starter and Plus) with optional add-ons. Pricing is quote-based and customized to each client's needs.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

FullStack PEO provides fractional HR support through a co-employment model, enabling small to mid-sized businesses to outsource payroll administration, benefits administration, compliance management, employee handbook development, employee relations, and HR consulting. Services are delivered via two subscription packages (Starter and Plus) with optional add-on modules including a Simple IT Partnership, Strategic HR Consulting, TrueU Learning Platform, Applicant Tracking System, Mobile Timekeeping, Employee Engagement Software, and Performance Management.

Product overview

FullStack PEO is a Professional Employer Organization (PEO) platform providing fractional HR support through a co-employment model. The core offering consists of the FullStack PEO Platform, which is offered in two tiered service packages: the Starter Package (covering payroll administration, tax filings, employee handbook development, employee relations, PTO tracking, EPLI, onboarding, ancillary benefits, ACA compliance, and workers compensation) and the Plus Package (additionally including health insurance administration, benefits consultation, Mineral training portal access, and 401k MEP administration). Customers can enhance their service with optional add-on modules including the Simple IT Partnership (acquired in 2023), Strategic HR Consulting, TrueU Learning Platform, Applicant Tracking System, Mobile Timekeeping System, Employee Engagement Software, and Performance Management System.

Differentiator

Problem solved

Functional benefit

Products and services

• FullStack PEO Services (Starter and Plus Packages) Subscription-based Professional Employer Organization (PEO) services offered in two tiers: the Starter Package (payroll administration and tax filings, employee handbook development, employee relations and termination support, PTO tracking, EPLI, onboarding, ancillary benefits administration, ACA compliance, and workers compensation) and the Plus Package (which adds health insurance administration, benefits consultation, online training portal access, and 401k Multiple Employer Plan administration). Targeted at small and mid-sized businesses that want to outsource HR administrative burden while maintaining control over their teams.
• Simple IT Partnership Technology management partnership add-on that integrates HR and IT services for clients, enabled by the 2023 acquisition of Indianapolis-based Simple IT. Marketed to fast-growing businesses seeking a single outsourced partner for both people operations and technology infrastructure.

Named customers5 records

Segments3 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration8 records

Partnerships

Eleven partnerships are on record, tiered core and minor.

• PrismHRcoreTechnology or IntegrationPrismHR serves as the primary HRIS and payroll platform for FullStack PEO, enabling payroll processing, tax filing, and benefits administration capabilities. Clients access PrismHR for managing paychecks, FSA/HSA accounts, and employee information.
• Omega Benefit StrategiescoreTechnology or IntegrationPartner for FSA/HSA account management and benefits financial services, providing participant login portals for employee benefit account administration.
• AnthemcoreTechnology or IntegrationHealth insurance carrier partner providing medical insurance administration and claims management for FullStack PEO clients.
• GuardiancoreTechnology or IntegrationInsurance carrier partner for life, disability, and other employee benefits administration.
• TransamericacoreTechnology or Integration401k administration partner providing retirement plan management and participant login access for FullStack PEO's 401k Multiple Employer Plan.
• VSPcoreTechnology or IntegrationVision insurance carrier partner providing vision coverage administration and claims for client employees.
• Workwell GlobalcoreStrategic or Co-development PartnerGlobal Employer of Record (EOR) partner enabling FullStack PEO to offer international HR services for clients with overseas offices, headquarters, or teams. This partnership extends FullStack's service capabilities beyond the United States.
• Gener8torminorChannel Partner/ Reseller/ DistributorStartup accelerator and ecosystem partner that refers portfolio companies to FullStack PEO for HR outsourcing services.
• DeveloperTownminorChannel Partner/ Reseller/ DistributorTechnology company ecosystem partner that refers clients to FullStack PEO for HR services.
• MakeMyMoveminorChannel Partner/ Reseller/ DistributorBusiness ecosystem partner referring growing companies to FullStack PEO for HR outsourcing.
• MBCB AttorneysminorChannel Partner/ Reseller/ DistributorLegal services ecosystem partner referring law firm clients to FullStack PEO.

Scale indicators2 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Engage PEO: PEO delivering HR, payroll, benefits, and workers' comp to small and mid-sized employers. Comparable service breadth and target customer size to FullStack.
• G&A Partners: PEO providing HR outsourcing, payroll, benefits, and compliance to SMBs across multiple US regions. Comparable mid-market PEO profile and similar reliance on best-of-breed technology partnerships.
• ExtensisHR: Mid-market PEO offering co-employment, payroll, benefits, and risk management. Similar in size and customer profile to FullStack, competing for the same growing SMB cohort.
• Justworks: Tech-forward PEO targeting SMBs and startups with payroll, benefits, HR, and compliance. Most direct head-to-head competitor given overlapping customer profile and PrismHR-adjacent positioning.
• Vensure Employer Services: PEO focused on SMBs with payroll, benefits, HR, and risk management. PE-backed roll-up strategy gives it scale and M&A capacity that directly pressures regional PEOs like FullStack.
• FrankCrum: Florida-based PEO and staffing firm offering payroll, HR, benefits, and workers' comp to SMBs. Similar co-employment model and comparable size band to FullStack, with a stronger Southeast presence rather than Midwest.

Others

• Insperity: Established full-service PEO with comprehensive HR, payroll, benefits, and workforce analytics. Operates at greater scale and broader geographic reach than FullStack but in the same core PEO category.

Broad incumbents

• TriNet: Large, publicly-traded PEO serving SMBs across industries with HR outsourcing, benefits, and payroll. Comparable service model but at meaningfully greater scale and brand recognition.
• ADP TotalSource: ADP's PEO division offering co-employment HR outsourcing to SMBs and mid-market clients. A dominant incumbent with the carrier relationships and technology footprint that FullStack partially leverages through PrismHR.
• Paychex PEO: Paychex's PEO offering bundling payroll, HR, benefits, and compliance for small businesses. Competes head-to-head for the same SMB/startup segment FullStack targets.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks5 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/fullstack-peo
• Xx.com/fullstackpeo

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Subsidiaries1 record

Funding overview

Funding rounds2 records

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A1 record

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about FullStack PEO