Free Tool
How much revenue are you losing to slow follow-up?
Most businesses respond to new leads in 5+ hours. By then, 78% have already bought from someone else. See what that’s costing you.
Calculate your revenue loss
Fill in your numbers — takes under 60 seconds.
Inbound inquiries, form fills, calls — all channels combined
Methodology
Where do these numbers come from?
This calculator uses published lead response research from Harvard Business Review, InsideSales, and Drift studies, combined with your inputs.
The conversion drop-off rates reflect how drastically lead qualification likelihood falls as response time increases. Responding within 5 minutes makes you 21× more likely to qualify a lead than responding after 30 minutes (InsideSales / Harvard Business Review, replicated across multiple studies).
The baseline conversion rates by industry represent average lead-to-closed-deal ratios under normal follow-up conditions, sourced from industry benchmarks across real estate, agency, home services, and local service businesses.
The formula: Expected deals × Drop-off rate × Deal value = Monthly revenue lost to slow response.
This is a directional estimate, not a guarantee. Your actual results will vary based on your market, offer quality, and follow-up process.
What is the ideal lead response time?
Five minutes or less.
A study published by Harvard Business Review found that businesses who contacted leads within five minutes were 100 times more likely to reach them and 21 times more likely to qualify them compared to businesses that waited 30 minutes.
After five minutes, the odds of making meaningful contact drop sharply, and after an hour, most leads have either moved on or gone with a competitor who responded first.
For leads-based businesses like real estate, home services, and agencies, those first few minutes are where revenue is won or lost.
How does slow follow-up affect close rates?
Dramatically.
Lead qualification likelihood drops roughly 10× between the 5-minute mark and the 30-minute mark.
By the time you respond after an hour, you're competing against the business that already replied, already built rapport, and is already moving the deal forward.
The data shows this isn't a linear decline, it's a cliff. The first five minutes represent a window where the lead is actively engaged, still has the problem top of mind, and hasn't started researching alternatives. Every minute after that, you're losing ground you can't recover with a better pitch or lower price.
Does this apply to my industry?
Yes, if your business depends on inbound leads, this applies to you.
The response-time effect is strongest in industries where the buyer has multiple options and low switching costs: real estate (buyers contact multiple agents), home services and contractors (homeowners request several quotes), marketing agencies (prospects compare 2–3 firms), and local services like salons, medspas, and fitness studios (clients book with whoever confirms first).
Ecommerce businesses see the same pattern with abandoned cart and inquiry follow-up.
The specific dollar amounts vary by your deal size and volume, but the underlying dynamic, faster response wins more deals, holds across every leads-based vertical.