Sales Qualified Lead (SQL)
A lead that sales has examined and accepted as a genuine opportunity worth working. The point at which pipeline responsibility formally transfers.
What the label asserts
That a seller has made contact and judged the lead worth pursuing against a criterion agreed in advance. The judgement, and the possibility of it going the other way, is the entire value of the stage.
A stage with no rejection path is not a stage
The two failure modes
Ceremonial acceptance. Rejection is technically possible but socially discouraged, or requires effort nobody has time for. The rate approaches 100% and the label stops carrying information.
Unapplied criteria. A written definition exists and sellers work from instinct. Detectable by asking three sellers to qualify the same five records independently.
Making it work
Require a reason code on rejection and route it back to marketing. Rejection without feedback improves nothing upstream.
Measure the acceptance rate deliberately and watch its trend. A rate climbing toward 100% is usually the stage decaying rather than lead quality improving.
Pair the count with downstream conversion from a later period, or the SQL count becomes trivially improvable by accepting more.
Audit periodically by re-qualifying a sample blind. Agreement between assessors is the health check for the definition.
Whether you need this stage at all
Each qualification stage costs handoff time and creates a place for records to sit. It earns its place only if a real decision happens there and a meaningful share of records are stopped by it. Where acceptance is near-universal, removing the stage loses no information and returns the time — the stage was recording that work happened, not that a judgement was made.
RELATED TERMS
Sales Accepted Lead (SAL)
A lead sales has acknowledged and agreed to work, sitting between marketing qualification and genuine pipeline.
Stage-to-Stage Conversion
The proportion of opportunities moving from each stage to the next. The most localised view of where pipeline dies.
Marketing Qualified Lead (MQL)
A lead that marketing considers ready for sales attention, according to a definition both teams have agreed. Without that agreement it is a marketing activity metric wearing a pipeline costume.
Lifecycle Stages
The shared sequence describing a contact's relationship with the company over time — subscriber through customer — used to align marketing, sales and customer success on where someone is.
COMMON QUESTIONS
- What makes a lead a sales qualified lead?
- Sales has made contact and confirmed it is worth pursuing against a stated criterion. The distinguishing feature versus an MQL is that a human on the receiving side has assessed it.
- What is the difference between MQL, SAL and SQL?
- MQL is marketing's judgement. SAL is sales accepting the lead for work. SQL is sales confirming, after contact, that it merits pursuit. Not every organisation needs all three — each stage must correspond to a real decision or it is reporting overhead.
- Why is our SQL count meaningless?
- Two usual causes: acceptance with no possible rejection, so the step does no filtering; or a criterion that exists on paper but is not applied, so the label records that someone answered the phone.
- Who should own the SQL definition?
- Sales, because sales applies it — but agreed with marketing, because marketing is measured against it. A definition owned by the function it constrains rather than the one that applies it will not hold.
FURTHER READING
MQL vs SAL vs SQL vs PQL: Which Stages You Need
Four qualification stages exist. Most organisations need three, some need two, and adding all four without defining the transitions makes reporting worse rather than better.
Lifecycle Stage Definitions That Settle the MQL Argument
The dispute between marketing and sales about lead quality is not a relationship problem. It is two teams using different definitions of the same handoff, and it is resolved by writing the definition down.
Learn how to apply this: RevOps 101: Revenue Operations Foundations
Definitions are the vocabulary. The courses are where you learn to operate it, with the interactive audit tools.
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