MQL vs SQL: What Counts as a Qualified B2B Lead

A sales qualified lead (SQL) is a contact who fits your target customer profile, has a real need you can meet, and is ready for a sales conversation, usually because they asked for a quote, a call or a demo. A marketing qualified lead (MQL) is earlier: someone who fits the profile and showed interest, such as downloading a guide, but hasn’t asked to buy. The difference matters because sales time is expensive, and spending it on people who are only curious is how pipelines fill up with nothing.

Here’s how to tell them apart, how to qualify a lead without a 40-point scoring model, and what good and bad B2B inquiries actually look like.

MQL vs SQL in one table

Some teams add more stages, such as SAL (sales accepted lead, when sales agrees to work it) or PQL (product qualified lead, for software with a free trial). They’re useful in large teams with handoffs. Most small and mid-sized B2B companies don’t need them.

What makes a lead sales qualified

The classic: BANT

BANT is the checklist most sales teams learn first:

• Budget: can they afford it, or is money set aside?
• Authority: is this person the decision-maker, or close to them?
• Need: do they have a problem you actually solve?
• Timeline: are they buying in the next few months, or “someday”?

BANT is useful, but don’t apply it like a gate at first contact. In B2B, buyers rarely tell a stranger their budget in the first message, and the person writing in is often an engineer or buyer who will recommend, not sign. A lead can be very real with only “Need” and “Timeline” clear on day one. German appointment-setting agencies such as Phocus Direct pair BANT with mapping the whole buying group (engineering, purchasing, production) for exactly that reason.

A simpler test for inbound leads

For inbound inquiries, four questions usually do the job. We use them to define an interested lead:

1. Did they write first? The buyer contacted you by choice.
2. Is it something you sell? Not something adjacent you’d have to subcontract.
3. Is it your market? A region and type of company you serve.
4. Is there buying intent? They ask for a price, a quote, availability, specs or a visit.

Four yeses make it a sales lead. Answer it the same business day. Three yeses and a “maybe” on intent is closer to an MQL: answer helpfully and keep the door open.

For meetings booked by someone else

If an agency books meetings for you, the bar is higher, because you’re paying per meeting. Market practice, as described by agencies like TerminFabrik and SalesHive, is that a valid meeting needs a company in your agreed profile, a person in an agreed role, a person who understood what the meeting was about, and a meeting that actually took place for a minimum time. We cover the contract side in pay per lead vs retainer.

Examples of good and bad B2B inquiries

These are illustrative examples, written to show the patterns. Names and details are hypothetical.

Sales qualified: answer today

• “We need a quote for 300 stainless brackets, laser cut and bent, drawing attached. Delivery to Wrocław, needed in six weeks.” Need, specification, location and timeline in one message. This is about as good as it gets.
• “We’re looking for a new office cleaning contractor for three floors, about 1,500 m², from January. Can you visit next week?” Clear scope, start date and a request for a site visit.
• “Our current CNC supplier can’t hold tolerances on aluminium housings. Can you do 5-axis, batches of 50–100?” A real problem with an existing supplier. Switching intent is strong.

Marketing qualified: nurture, don’t chase

• “Downloaded: Guide to choosing an industrial racking supplier.” Interest in the topic, no request. Send something useful, not a sales call.
• “Do you have a price list?” with no company name or details. Could be a buyer, could be a student or a competitor. Reply politely and ask one or two questions about what they need.
• “We might be expanding the warehouse next year, just collecting information.” Real company, real future need, no timeline. Keep in touch.

Not a lead at all

• “We’re an SEO agency and noticed your website could rank better…” A sales pitch.
• “Is there an open position for a welder?” A job application. Forward it to HR.
• “Please send your full price list for all products” from a company in your own industry. Probably a competitor checking prices.
• A contact from a bought list who never wrote to you. Nobody raised a hand. In the EU, contacting them by e-mail or phone without consent can also break the law: in Poland, art. 398 PKE requires prior consent for unsolicited commercial e-mail and calls, including to businesses; in Germany, §7 UWG requires prior consent for cold e-mail. This is not legal advice.

How to set up qualification without overdoing it

1. Write your definition on one page. Target industries, company sizes, regions, roles that count, and what a buying signal looks like. Share it with everyone who touches leads.
2. Agree on the handoff. What exactly makes marketing pass a lead to sales, and how fast sales must reply.
3. Ask the missing questions on the form, not in the first call. Company, location, quantity or scope, time frame. Three to five fields is plenty; long forms scare off real buyers.
4. Track outcomes, not just volume. Count how many leads became quotes and customers per source. That tells you which channel really works.
5. Review rejects monthly. If sales keeps rejecting leads from one source, fix the source or the definition, not the sales team.

If you’re still getting your head around the basics, start with what lead generation is. For what qualified leads cost on the market, see B2B cost per lead.

Leads that are sales qualified on arrival

Our B2B lead generation only produces inbound leads: buyers who found one of our niche websites through Google or AI answers and wrote first. Each lead is judged against an interested-lead definition we agree in writing before the start, and on our pay-per-lead model you pay only for the ones that meet it. Book a discovery call to see whether your niche fits.