How fast should you call back a new lead?

Short answer: within the hour at the very least, and sooner if you can. The longer answer is that the hard data behind “faster” is thinner than the internet makes it sound. Here is what holds up and what does not.

The best evidence: Harvard Business Review, 2011

In 2011, Oldroyd, McElheran and Elkington audited how 2,241 US firms handled inbound leads for Harvard Business Review (this link goes to a CustomerThink page covering the study). What they found:^[1]

• Firms that replied within an hour were nearly 7 times as likely to qualify the lead as firms that waited one more hour.
• Against firms that waited 24 hours or longer, the multiple was more than 60.

Two caveats. It audited online inquiries across many kinds of companies, not phone calls to trades. And it compares groups of firms, so other differences between fast and slow companies could be mixed in. Still, it is the largest audit I found, at 2,241 firms. Waiting even one more hour cost a lot, and waiting a day cost far more.

The famous numbers are weak

You have probably seen “respond in five minutes.” Here is where that comes from:

• The “MIT” study, 2007. Commonly labeled the MIT study, this lead response study is vendor data tied to InsideSales. It reported that contacting a lead within 5 minutes instead of 30 made contact 100 times more likely and qualification 21 times more likely. It covered six companies. Six.^[2]
• Velocify, 2012. A vendor analysis of about 3.5 million leads. It said a call in the first minute lifted conversion by “almost 400%” and that 93% of converted leads were reached by the sixth call. This is vendor data from 2012, and I have no working link to the original, so I cannot check it.^[3]

Weak does not mean wrong. It means you should not build a shop rule on “100 times” and repeat it to your crew like scripture.

So how fast?

This part is my judgment, not data.

• During business hours, aim for minutes. Call. If they do not pick up, send a text right away so they know you saw the request.
• Treat one hour as the ceiling. The one solid study says the damage starts there.
• After hours, do not let it sit until noon. A quick acknowledgment that night beats a perfect call the next afternoon.

Time your own shop

Most owners have never timed this. Pick one week. For every new lead, whether a call, form, text, or message, write down when it came in and when a person first answered. Average the gaps. That is your number. The average in the HBR audit was 42 hours. If you cannot say “under an hour” with a straight face, you just found something worth fixing.