Stage 3 · 7 min read read · Last reviewed 2026-05-23

How to Choose an ATS by Company Size: The Decision Framework

The wrong ATS for your company size is a common and expensive mistake. Enterprise tools at SMB companies are under-utilised and over-priced. SMB tools at scaling companies create re-migration pain every 18 months.

By company size and hiring volume

Under 50 employees, fewer than 20 hires/year

The right profile: You’re replacing a Google Sheet or a shared inbox. You need a tool that’s up and running in a day, costs under $200/month, and doesn’t require implementation consulting.

Recommended: Workable (Starter, $169/mo) or Breezy HR (Bootstrap, free tier available)

What you don’t need yet: Structured interview scorecards, advanced analytics, enterprise HRIS integrations, OFCCP compliance tooling

Skip: Greenhouse, Lever, Ashby, SmartRecruiters — all are priced and sized above your requirements

50–200 employees, 20–80 hires/year

The right profile: Hiring is complex enough to need structure, but not so complex that you need enterprise tooling. You probably have 1–3 dedicated recruiters. Interview consistency is becoming a concern.

Recommended:

Tech-focused, analytics priority: Ashby (transparent pricing, fast implementation, best analytics)
US company, structured interview priority: Greenhouse (industry-standard scorecards)
UK/EU company, employer brand priority: Teamtailor (careers site + GDPR native)
Outbound/sourcing-heavy model: Lever (CRM+ATS hybrid)

What you need: Structured scorecards, LinkedIn integration, multi-stage pipeline, basic compliance

200–500 employees, 80–200 hires/year

The right profile: Dedicated recruiting team. Multiple hiring managers across departments. Compliance is a real concern. You need pipeline analytics and possibly OFCCP compliance.

Recommended:

Greenhouse (if structured interviewing is the priority)
Ashby (if analytics and speed are the priority)
SmartRecruiters (if high volume across multiple locations is the requirement)

What you need: Advanced analytics, OFCCP tooling, enterprise HRIS integration, approval workflows, agency management

500+ employees

The right profile: Recruitment is a core business function with dedicated ops, compliance, and analytics teams.

Recommended: SmartRecruiters, Workday Recruiting, iCIMS. These are custom-quoted enterprise tools with 12–16 week implementations.

What you don’t need: To be reading this guide — you need an ATS consultant.

The four questions before signing

1. What’s our most common hiring failure right now?

“We’re slow to extend offers” → time-in-stage analytics (Ashby, Greenhouse)
“Our interviews are inconsistent” → structured scorecards (Greenhouse)
“We can’t find enough candidates” → sourcing tools (Lever, workable AI sourcing)
“We lose track of where candidates are” → basic pipeline management (any tool)

2. Do we hire primarily inbound (job boards) or outbound (sourcing)? Inbound → ATS-first (Greenhouse, Workable, Ashby) Outbound → CRM+ATS (Lever, SmartRecruiters)

3. Do we have US federal contractor obligations (OFCCP)? Yes → Greenhouse or SmartRecruiters (mature OFCCP tooling) No → Full shortlist remains open

4. Are we hiring in the UK/EU and prioritising GDPR compliance? Yes → Teamtailor or Greenhouse (both have strong EU compliance features)

The implementation time reality

Tool	Typical time to first live role	Full implementation
Breezy HR	1 day	1 week
Workable	1 day	1–2 weeks
Teamtailor	3–5 days	2–3 weeks
Ashby	1–2 weeks	2–4 weeks
Greenhouse	2–4 weeks	4–8 weeks
SmartRecruiters	4–8 weeks	8–16 weeks

If you need to hire in the next 30 days, Greenhouse’s 4–8 week implementation is a problem. Workable or Breezy HR get you operational in days.

What to do if you’re between tiers

The most common mistake: buying an enterprise tool “because we’re growing.” The principle is: buy the right tool for your current needs with a clear trigger point for the next migration.

Define: “We will re-evaluate our ATS when we reach X hires/year or Y employees.” Typically: