What does a slow callback actually cost you?
Every study on lead response time finds the same thing: minutes matter more than most businesses think. Put in your own lead volume and deal size, and see what closing that gap is actually worth.
How this is calculated
Response-time research consistently finds that leads contacted within minutes convert into customers far more often than leads contacted hours later — studies from Harvard Business Review, Kellogg/MIT, and InsideSales/Xant all point the same direction, though they measure it in different ways and with different multiples. Rather than pick one of those exact figures, this calculator uses a smaller, capped 3× maximum lift for going from your slowest bucket to an instant response — the same real-world uplift Sysevo has seen on its own real-estate customers going from manual to sub-60-second response.
Your projected close rate scales smoothly between your current rate and that 3× ceiling based on how far your current speed is from instant, and is never modelled above 95% regardless of your inputs. Extra deals and revenue are the difference between your current monthly deals and the projected figure at your lead volume and deal value.
The industry presets are mid-range starting figures, not benchmarks — replace them with your own numbers wherever you know them. This is a directional estimate, not a guarantee.