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Sales & growth · 5 min read

Speed to lead statistics, with the caveats left in

By the InTheory team · Updated November 2026

The most quoted speed-to-lead numbers come from a handful of studies, several of them more than a decade old and some run by vendors. Here is what each study measured, what it found, how much weight it can bear, and how a service business can measure its own response time instead of relying on someone else's.

Key takeaways
  • The core research (HBR 2011, MIT/InsideSales 2007) is old and focused on web form leads, but its direction has held up in later vendor studies.
  • Many companies are slow: in the HBR audit of 2,241 firms, 23% never responded to a web lead at all.
  • Treat multipliers like 100x or 21x as signals of direction, not forecasts for your business.
  • Your own baseline (median minutes from enquiry to first real contact) matters more than any published statistic.

What speed to lead means

Speed to lead is the time between a prospect raising a hand (a web form, a missed call, a chat message, a quote request) and the first meaningful response from your business. Meaningful is the key word. An automatic 'thanks, we got your message' email is useful, but most of the research below measures a real attempt to reach the person, usually a phone call.

The figures that circulate in sales blogs trace back to a small set of studies. They get repeated so often that the original sample, year and method disappear. This page puts those details back, because a stat you cite in a board meeting or a sales training should be one you can defend.

The research most often cited

Each figure below links to the source we opened. Where a study was run or co-authored by a company that sells lead response software, we say so.

  • Harvard Business Review, 2011 (Oldroyd, McElheran, Elkington): an audit of 2,241 US companies found 37% responded to a web-generated test lead within an hour, 16% within one to 24 hours, 24% took more than 24 hours, and 23% never responded. Among firms that replied within 30 days, the average response time was 42 hours.
  • HBR, 2011, second dataset: across 1.25 million leads at 29 B2C and 13 B2B companies, firms that tried to contact a lead within an hour were nearly seven times as likely to qualify it as firms that tried an hour later, and more than 60 times as likely as firms that waited 24 hours or longer. Co-author David Elkington was CEO of InsideSales.com at the time.
  • MIT / InsideSales.com Lead Response Management study, 2007: the odds of contacting a lead called within 5 minutes versus 30 minutes dropped 100 times, and the odds of qualifying it dropped 21 times. The same report found the odds of contact fell more than 10 times within the first hour.
  • Same 2007 study: Wednesday and Thursday were the best days to reach and qualify leads, and 4 to 6pm was the best block for making contact. These findings are specific to the companies studied and are now nearly two decades old.
  • Drift lead response survey, 2017 (published on the Salesloft blog): of 433 companies tested, only 7% responded within five minutes and 55% did not respond within five business days. All of the ten fastest responders used live chat. Drift sold chat software.
  • InsideSales lead response research, 2021 (vendor study): across 5.7 million inbound leads at 400+ companies, 57.1% of first call attempts happened after more than a week, conversion was about 8 times higher in the first five minutes than between five minutes and 24 hours, and only 0.1% of inbound leads were engaged in under five minutes.

How much weight these numbers can bear

Be honest about the limits. The MIT/InsideSales data is from 2007, before most people carried smartphones. The HBR article is from 2011. The Drift sample was B2B software companies, not plumbers or law firms. Two of the studies were produced by firms selling lead response tools, and one academic study had that vendor's CEO as a co-author. None of that makes the findings wrong, but it should make you careful about quoting a precise multiplier as if it applies to your market.

What does hold up across every study is the direction. Leads that get a fast, personal response are far more likely to turn into a conversation, and a large share of businesses respond slowly or not at all. That second point is the useful one for an owner. You do not need to be faster than a theoretical ideal. You need to be faster than the three other firms the prospect contacted the same afternoon.

What the research means for a service business

Most service businesses do not get leads from web forms alone. They come through phone calls, Google Business Profile messages, Angi or Thumbtack, referral emails and texts to an owner's mobile. Each channel has its own delay. A web form might sit in a shared inbox until the office manager checks it after lunch. A voicemail left at 6:40pm on a Friday might not be heard until Monday.

The practical implication is not that every lead needs a call within five minutes. A family law prospect, a commercial HVAC buyer and a homeowner with a burst pipe have very different expectations. It is that you should decide, per channel and per type of enquiry, what a reasonable response time is, and then design the process so that it happens without relying on someone remembering.

How to measure your own speed to lead

Before buying anything, measure. Pull the last 50 to 100 enquiries from your CRM, inbox, call log and booking tool. For each one, record when it arrived, when someone first made real contact, and whether it became a booked appointment, consultation or quote. A spreadsheet is enough.

From that sample, calculate the median response time by channel and by time of day. Medians are better than averages here because a few leads that waited a week will distort an average. Then look at conversion for fast versus slow responses in your own data. If your sample is small, the result is a hint, not proof, but it is a hint about your customers rather than someone else's.

  • Median minutes from enquiry to first real contact, split by channel
  • Share of enquiries with no response within one business day
  • Share of after-hours enquiries, and how long they wait
  • Booked appointments or consultations per 100 enquiries, fast versus slow

Getting faster without adding headcount

Once you know your baseline, the fixes are usually unglamorous. Route every channel into one place so nothing waits in a personal inbox. Send an immediate acknowledgement that sets an honest expectation. Alert the right person by text, not just email. For after-hours calls, use an answering service or a carefully scoped AI intake tool that captures details and books a callback, with a person reviewing anything sensitive.

A sensible first project is one channel, one response target and one owner. For example, a firm might aim to make personal contact with every weekday web enquiry within 15 minutes for 90 days and compare booked consultations against the prior quarter. That is the kind of narrow, measurable pilot InTheory would scope with a client before recommending any new software. Sometimes the fix turns out to be a notification setting in a tool you already pay for.

Common questions

Is the five-minute rule still true?

The five-minute figure comes mainly from the 2007 MIT/InsideSales study and later vendor research. Every study we reviewed points the same way: faster responses convert better. But the exact multiplier depends on your market, channel and buyer. Measure your own response times and conversion before setting a target.

Who did the original speed to lead research?

The most cited work is by James Oldroyd, who led the 2007 Lead Response Management study with InsideSales.com and co-authored the 2011 Harvard Business Review article The Short Life of Online Sales Leads with Kristina McElheran and David Elkington, then CEO of InsideSales.com.

What is a good lead response time for a small service business?

There is no single right number. A reasonable approach is to set a target per channel, such as personal contact within 15 to 30 minutes during business hours and first thing the next morning for after-hours enquiries, then measure whether faster responses actually lift your bookings.

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