What Does an SDR Do? The Complete Sales Development Representative Guide

A sales development representative, usually shortened to SDR, is a specialist outbound sales role focused on the early stages of the buyer journey. SDRs do not close deals or negotiate contracts. Their job is to identify accounts that look like a good fit for the product, reach out to decision-makers at those accounts, qualify whether there is a real opportunity worth an account executive's time, and book a discovery meeting on the AE's calendar. Once that meeting is held, the deal moves to the AE and the SDR moves on to the next account.

The role exists because of a basic productivity calculation. Account executives are expensive, typically commanding base salaries between $80,000 and $140,000 plus uncapped commission, and the highest-leverage use of their time is running discovery calls, building proposals, and progressing late-stage opportunities. Every hour an AE spends finding fresh prospects is an hour they are not closing revenue. Splitting prospecting off into a dedicated SDR seat usually allows a sales team to produce 2 to 3 times the qualified pipeline per AE compared to a model where AEs hunt for their own meetings.

There are some role-name variations worth understanding. Business development representatives (BDRs) typically focus on outbound prospecting into cold accounts, while SDRs are sometimes scoped to qualifying inbound leads generated by marketing. In practice, the boundary between the two titles has eroded over the last five years, and most companies now use the terms interchangeably. The substantive distinction worth tracking is inbound qualification versus outbound prospecting, regardless of the title applied to the seat.

An SDR's working day is split between three core activities: research, outreach, and follow-up. Research means identifying which accounts in the target list to work next, finding the right decision-makers within each account, and gathering enough context about the company to write a credible first-touch message. Outreach is the actual sending of emails, LinkedIn messages, and the making of cold calls. Follow-up is the disciplined working of multi-touch sequences, often the most underrated of the three activities and the one where most pipeline is actually generated.

The uncomfortable truth about most SDR roles is that the actual selling activity (writing personalised messages, talking to prospects, qualifying accounts) accounts for only 18 to 30% of the working day. The rest gets consumed by data entry, list-building, tool-switching, internal meetings, and administrative work. This figure has barely improved in five years despite enormous investment in sales productivity software.

The teams that have managed to push selling time above 40% of the day have done so by ruthlessly consolidating their tech stack and removing steps from the SDR workflow rather than adding new tools. Every additional tool adds context-switching cost, and most sales engagement platforms now offer enough breadth that running 6 to 8 separate point solutions is rarely the most productive setup. A clean stack of CRM, sales engagement platform, dialler, LinkedIn outreach tool, and one enrichment tool is usually sufficient.

Time-of-day allocation also matters more than most managers acknowledge. Cold calling consistently produces the highest connect rates between 4 and 5pm local time, which is roughly 47% above the historical morning calling window. Email sending and LinkedIn engagement perform best earlier in the day. SDR shift structures that reflect these realities, with mornings weighted toward written outreach and afternoons toward live calls, tend to produce meaningfully more meetings than schedules that treat each hour as interchangeable.

SDR base salaries vary widely by geography, industry, and company stage. According to PayScale's 2026 SDR salary research/Salary), the average US SDR base salary is around $51,000, while Salary.com data puts the average closer to $70,000. The honest summary is that most US SDRs earn a base of $50,000 to $65,000 with variable commission of $15,000 to $30,000, producing on-target earnings (OTE) of $70,000 to $95,000.

The compensation structure typically follows a 70/30 or 80/20 base-to-variable split. The variable portion is usually tied to meetings booked or meetings held that meet a minimum qualification standard, often layered with an accelerator above quota and a clawback for meetings that no-show or get disqualified by the AE. Smart compensation design rewards meeting quality over meeting volume, because pure volume incentives reliably produce meetings the AE cannot close.

European SDR compensation runs lower in absolute terms but the relative structure is similar. A typical European SDR base sits at €30,000 to €40,000 with variable of €10,000 to €18,000, producing OTE of €40,000 to €58,000. Cost of living and tax rates vary widely, so apples-to-apples comparison with US figures requires more than a currency conversion. Senior SDRs in high-cost European cities like London, Amsterdam, or Munich can earn meaningfully more, particularly when commission is uncapped.

The modern SDR tech stack has consolidated considerably over the last three years. The current standard footprint for a well-equipped SDR includes a CRM (Salesforce, HubSpot, or Pipedrive), a sales engagement platform (Outreach, Salesloft, Apollo, or Smartlead), a dialler with call recording (Aircall, Orum, or built into the engagement platform), a LinkedIn outreach tool (Sales Navigator at minimum, often paired with Skylead or HeyReach for sequenced outreach), and one enrichment tool (Apollo, ZoomInfo, or Clay).

AI tooling has become a meaningful layer of the stack. Roughly 60% of SDRs now use AI tools in some part of their workflow, and around 62% report that these tools improve their productivity, according to Sales So's 2026 outbound SDR statistics report. The biggest measurable wins have come from account research and meeting prep summaries rather than from AI-generated email content, which has produced inconsistent results once the novelty period wears off. AI for first-line personalisation tends to lift reply rates briefly before recipients pattern-match the format.

Tool sprawl is the most common dysfunction in SDR tech stacks, and consolidating is almost always more productive than adding. Each additional tool introduces context-switching cost, login friction, and CRM-sync complications. Companies that have audited their stack and removed two or three redundant tools typically see selling time per SDR rise by 5 to 10 percentage points within a quarter, which is the equivalent of adding half an SDR to the team without any incremental headcount cost.

SDR performance is typically measured against a small number of activity, conversion, and outcome metrics. The activity metrics are dials made, emails sent, and LinkedIn touches sent. The conversion metrics are reply rate, connect rate, and meeting set rate per touch. The outcome metrics are meetings held, qualified meetings (meaning the AE accepted the meeting as legitimate), and pipeline generated in dollar terms. The trap most teams fall into is measuring the activity metrics in isolation and ignoring the conversion and outcome layer.

A realistic benchmark for a well-functioning SDR in mid-market B2B is 8 to 15 qualified meetings per month, producing roughly $200,000 to $500,000 in new pipeline depending on average deal size. Top performers sit at 20 plus qualified meetings per month, typically because they have invested heavily in account research and run tighter, more targeted lists rather than sending more emails per day. Volume and quality usually trade against each other, and the right balance depends on average contract value.

Quota attainment data tells a difficult story. According to Prospeo's 2026 SDR performance metrics research, roughly 83% of SDRs miss quota in any given quarter, and only about 39% of SDR teams achieve 70% or higher attainment across the bench. Some of this reflects overly aggressive quota-setting, some reflects market conditions, and some reflects the structural reality that outbound has become harder as inboxes have saturated. Quotas set above the 70th percentile of historical team performance tend to produce demoralisation rather than stretch performance.

The standard SDR career path runs SDR to senior SDR to account executive, typically over 18 to 30 months. The promotion to AE is the meaningful one because it is the first role with full ownership of revenue closing. Some companies use an intermediate sales manager or team lead step, particularly in larger sales organisations where the AE bench is full and progression to AE is constrained.

Average SDR tenure has settled at 14 to 18 months across most B2B segments, based on Prospeo's 2026 sales team retention research. Teams whose promotion path to AE takes longer than 18 months are effectively training reps for their competitors, and 72% of SDRs say career progression directly impacts their likelihood of staying. The companies that retain SDRs longer than the median produce dramatically better unit economics on their outbound function, because ramped, experienced SDRs produce 2 to 3 times the qualified meetings of new hires in their first quarter.

Beyond the AE path, capable SDRs increasingly move into sales operations, revenue operations, customer success, marketing, or specialist enterprise prospecting roles. The skills built in the SDR seat (cold outreach, list building, qualification, CRM hygiene, and high-volume execution under pressure) translate well into adjacent revenue roles, and treating the SDR seat as a single fixed pipeline to AE narrows the talent pool more than necessary.

The traditional SDR-to-AE ratio of 1:1 has shifted in many companies toward 0.5:1, meaning one SDR shared between two AEs, particularly in outbound-heavy mid-market and enterprise segments. The shift reflects a growing recognition that quality outbound prospecting takes more research time per account than the historical assumption allowed. A well-resourced SDR working 80 to 100 accounts per quarter typically produces stronger AE pipeline than a stretched SDR working 200 to 300 accounts.

Specialisation by segment, channel, or motion has also become more common. Some teams split SDRs into inbound qualifiers and outbound hunters, recognising that the skill profiles and incentive structures differ meaningfully. Other teams specialise by industry vertical, allowing SDRs to develop genuine domain knowledge that translates into stronger reply rates and better qualified meetings. The right structure depends heavily on average contract value and the complexity of the buyer's decision process.

The right time to hire your first SDR is usually after the founder or first AE has already proven that outbound can produce meetings for the product, and once that proof point exists, the next bottleneck is volume. Hiring an SDR before there is a working playbook to hand them tends to produce expensive failure, because the SDR cannot reverse-engineer a working motion from a blank page. Founders who hire SDRs as their first sales hire and expect the SDR to figure out the playbook usually burn through 2 to 3 hires before recognising the sequence problem.

The realistic cost of an SDR seat in 2026, all-in including base, commission, tooling, and tech stack, lands at $90,000 to $130,000 per year in the US and €55,000 to €80,000 in Europe. The break-even calculation depends on average contract value: at a $30,000 ACV, a single SDR producing 10 qualified meetings per month and a 25% AE close rate covers their cost in roughly 5 months. At lower ACVs the maths gets tighter, and at very low ACVs (under $5,000 ACV) a dedicated SDR is rarely the right structure compared to inbound-only or product-led motions.

Common questions about the SDR role, hiring, and management.