Most “in-house vs outsourced SDR” comparisons anchor on base salary versus monthly retainer. That framing is wrong, and it consistently makes in-house look cheaper than it is. The number that matters is fully-loaded cost per qualified meeting, measured over the same 12-month window. When you build the model that way, the decision gets clearer and less emotional.
Here is how to run it properly.
Build the fully-loaded in-house number
A single productive SDR is not their base salary. Line it out:
| Line item | Illustrative annual cost |
|---|---|
| Base salary | $55,000 |
| Commission / OTE uplift | $20,000 |
| Payroll tax + benefits (~28%) | $21,000 |
| Tech stack (data, sequencer, dialer, Sales Nav, deliverability) | $14,000 |
| Management allocation (1 leader per ~7 reps) | $20,000 |
| Recruiting + onboarding (amortized) | $10,000 |
| Fully-loaded total | ~$140,000 |
Adjust the inputs for your market, but the shape holds: the real cost of one ramped in-house SDR lands around 2x to 2.5x their base salary. The three lines people skip are management allocation (an SDR without coaching produces a fraction of quota), the data and tooling stack (real ICP data plus deliverability infrastructure is $800-1,500/rep/month), and recruiting drag.
Then apply ramp. A new SDR takes 3-4 months to reach full productivity, and you spend 6-10 weeks hiring before that clock even starts. So your first predictable meetings arrive around month 5-6, while you pay full cost the entire time. Realistic year-one output from a single hire is closer to 90-110 qualified meetings, not the 150+ a ramped rep books at steady state.
At ~$140k for ~100 meetings, year-one cost per qualified meeting is roughly $1,300-1,400. Steady state drops toward $850-950 — if the rep stays.
The attrition tax nobody prices in
Average SDR tenure sits around 14-16 months. That means many teams never fully clear the ramp investment before the rep leaves — taking warmed accounts, sequence context, and tribal knowledge of what messaging works. Each departure resets the recruiting cost, the ramp cost, and the pipeline you were building. If you model a 3-person in-house team over two years, budget for at least two backfills. That is the single most underestimated cost line in the in-house case.
What outsourced actually costs
Agency and outsourced SDR models typically run $5,000-12,000 per month, structured as either a retainer, a per-meeting rate ($250-600 per qualified meeting), or a hybrid. Take a $7,500/month engagement delivering 12-15 qualified meetings monthly: that is ~$500-625 per meeting, from week three or four, with no recruiting cycle, no ramp payroll, and no attrition exposure on your side.
The trade is control and context. You are renting a motion, not building an asset. Message-market fit still has to be proven, list ownership and data portability need to be contractual, and brand nuance in a live conversation is harder to enforce than in-house.
De-risk the outsourced contract
If you go this route, the contract is where deals go right or wrong. Non-negotiables:
- Define “qualified meeting” in writing — title, company-size band, expressed need, and a no-show/reschedule policy. Vague definitions are how pay-per-lead models get gamed with junk.
- Own your data and lists. Contact records, sequences, and reply history should export to you on day one and at exit. Do not let your pipeline live only in a vendor’s system.
- Set a minimum activity floor plus a ramp clause, so you are not paying full retainer during their setup weeks.
- Insist on domain and deliverability separation — a dedicated sending domain protects your primary domain’s reputation.
- Keep a 30-day exit. Speed to leave is the mirror of speed to launch, and it keeps the vendor honest.
When each model wins
Outsource when you are testing a new ICP or market, you lack senior SDR leadership to coach a team, you are sub-scale (can’t yet justify a full manager plus 4-6 reps), or you need pipeline in the next 30 days rather than the next quarter. It is also the right call to prove a motion is repeatable before you commit to hiring against it.
Build in-house when you have a proven, repeatable motion, an ACV and sales cycle that reward deep product fluency, and real sales leadership already in seat. Strategic or enterprise accounts where the SDR conversation carries the brand belong in-house. So does any motion you intend to make a durable competitive asset with a clear rep-to-AE career path.
The move most teams should actually make
The sharpest play is rarely either/or. Outsource top-of-funnel prospecting to prove channels, messaging, and ICP fit fast — then internalize the parts that work once you have data instead of guesses. Let the agency de-risk the experiment and buy you speed; keep qualification and closing in-house where context compounds. Run both against the same metric — fully-loaded cost per qualified meeting, plus meeting-to-opportunity conversion — and let the numbers, not the org-chart instinct, decide what you scale.
If you want a second set of eyes on your own cost-per-meeting math, or a live channel test before you commit to a headcount plan, book a strategy call with LEADOXO. We will pressure-test the model with your real numbers and show you exactly where outsourced, in-house, or a hybrid gets you to pipeline fastest.