Agency Comparison

In-House SDR vs Agency

Hiring an SDR gives you control. Working with an agency gives you speed. Both work — but the math is almost never what people expect. Here's the real comparison.

In-House SDR

Hiring a dedicated sales development rep internally — full control, full cost, full ramp time.

Stellar Digital

Agency-delivered outbound — proven playbooks, faster ramp, predictable monthly cost with no hiring overhead.

Feature comparison

FeatureIn-House SDRStellar Digital
Annual cost (fully loaded)$105,000 – $168,000$24,000 – $72,000
Ramp to full productivity3 months averageNo ramp — playbooks proven on day one
Average tenure14 monthsOngoing — no attrition risk
Management overheadRequires SDR manager or founder timeManaged externally — weekly check-ins only
Tool stack cost$500–$2,000/mo in additional toolsIncluded in retainer
Institutional knowledgeLeaves with the SDR when they quitLives in the system — persists after engagement ends
Control over messagingFull control — direct feedback loopIndirect — requires structured briefing process
Product knowledge depthCan become a true product expert over timeSurface-level product knowledge typical
Flexibility to pivotPivoting requires retrainingSequences updated in days, not weeks

When hiring in-house is the right call

  • You have 50+ employees and a dedicated sales ops or revenue ops function to support an SDR
  • Your product requires 6+ months of product knowledge before someone can have a credible conversation
  • You've already validated outbound works and want to internalize the function
  • Your deal cycle is complex enough that a human needs to manage nuanced objections over 8+ weeks

When Stellar Digital is the right call

  • You're under 50 employees and can't afford the loaded cost, management overhead, and attrition risk
  • You need to move fast — 3 months of ramp is too slow for your current pipeline situation
  • You want to test whether outbound works for your ICP before committing to a full-time hire
  • You want a playbook built by people who've done this across dozens of verticals, not one person learning on the job

What actually sets Stellar Digital apart

The fully-loaded cost most companies ignore

SDR base salary runs $50k–$70k. Add commission (20–30% OTE), benefits (25–30% of base), management time, recruiting costs, and the tool stack (LinkedIn Sales Nav, Outreach, Apollo, Clay) and the true annual cost lands at $105k–$168k. A Stellar Digital retainer is $24k–$72k/year with tools included.

14-month average tenure

SDRs churn fast. The industry average tenure is 14 months. Every time an SDR leaves, you restart recruiting (60–90 days), pay a recruiter fee (15–20% of first year salary), and lose 3 months of ramp. That's 6 months of lost productivity per hire cycle. Agency relationships don't reset.

The institutional knowledge problem

An SDR who quits takes their learnings with them. At Stellar Digital, every ICP insight, reply pattern, and A/B test result is logged in the system. When the engagement ends, you have a documented playbook — not a person's memory.

Validation before commitment

Most companies aren't sure if outbound will work for their specific ICP. Running a 60-90 day agency engagement at $3k–$6k/mo is a far less risky validation than spending 6+ months and $80k+ hiring and ramping an SDR to find out the channel doesn't convert.

See if Stellar Digital is the right fit

30 minutes. We map out the right outbound approach for your ICP — no pitch, just the plan.

Book a free audit

Frequently asked questions

How much does a B2B SDR cost per year fully loaded?

An entry-level SDR earns $50k–$65k base with 20–30% OTE, meaning total cash compensation runs $60k–$85k. Add benefits (25%), tools ($800–$2,000/mo), recruiting fees, and management overhead and the fully-loaded annual cost is $105,000–$168,000.

What's the average SDR ramp time?

Industry research consistently puts SDR ramp time at 3 months to reach full productivity. During that period you're paying full salary while getting limited output. Agencies start generating pipeline from week one.

How long do SDRs typically stay at a company?

The average SDR tenure is 14 months. High ambiguity, repetitive work, and natural career progression toward AE roles means SDR churn is structural. Factor in a 6-month total cost to replace (recruiting + ramp) and you're restarting the process every year.

When does it make sense to bring outbound in-house?

Once you have validated playbooks, a defined ICP, and enough pipeline volume to justify a dedicated full-time person. Most companies should outsource to validate first, then hire once the system is proven. Hiring before validation is the expensive mistake.

Does Stellar Digital help transition to in-house later?

Yes. A Stellar Digital engagement ends with documented playbooks, a configured tech stack, and campaign archives you can hand to an in-house SDR or AE. The infrastructure is yours to keep — the hire just takes over running it.

Ready to build your outbound system?

Most clients see first qualified replies within 2 weeks of launch. Book a free audit to see what that looks like for your market.

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