Lead Routing Delay Cost Calculator
Price the pipeline you lose every minute you wait to follow up.
Waiting 45 minutes instead of 5 costs about $245,129/month. Speed-to-lead decays fast, instant routing and auto-assignment usually recover most of this.
Models the well-documented steep drop in contact/qualification odds within the first minutes. Actual decay varies by channel and offer.
About this calculator
Speed-to-lead isn't a soft best practice, it follows a fairly steep decay curve: contact and qualification odds fall fast in the first several minutes after a lead comes in and keep falling, more slowly, after that. This calculator applies an exponential decay model to your own volume and deal value, so the case for faster routing lands in dollars, not a generic "respond within five minutes" rule.
How to use it
- Enter inbound leads per month.
- Enter your current average response time and a target response time (5 minutes is the commonly cited fast-routing benchmark).
- Enter the lead-to-deal conversion rate you achieve at that target speed, and average deal value.
- Read conversion at your current (slower) speed, the relative conversion lost to the delay, and the deals and revenue that costs you monthly and annually.
Methodology
The model uses an exponential decay function, e^(–minutes ÷ 21), calibrated so conversion odds are near their peak around 5 minutes and drop off steeply as minutes pass. This shape reflects the well-documented pattern that contact and qualification odds fall off sharply in the first tens of minutes, not linearly over hours.
Conversion at your current response time is calculated by scaling your stated target-speed conversion rate by the ratio of decay at your current time to decay at your target time: convAtTarget × (decay(current) ÷ decay(target)).
Lost conversion points is the difference between target-speed and current-speed conversion. That percentage-point gap, applied to your monthly lead volume, gives lost deals; lost deals × deal value gives lost revenue, shown monthly and annualized.
The 21-minute decay constant is a modeling assumption representing the commonly observed steep early drop-off, not a measurement of your specific funnel. Actual decay shape varies by channel, offer type and lead intent, treat the dollar figure as directionally right rather than exact.
FAQ
Because the steepest part of the decay curve happens within the first 30-60 minutes, most of the conversion damage from slow response is already done well before a lead has waited a full business day. Modeling in minutes keeps that early, fast-moving decay visible instead of averaging it away.
Five minutes is a widely cited benchmark for inbound web leads because it captures the buyer while intent is still fresh. If your current process routes through manual assignment or a shared inbox, your realistic current time is likely much higher than five minutes, enter your honest current average, not an aspirational one.
No, high-intent channels like demo requests and pricing-page form fills decay fastest since the buyer is actively comparing options in the moment. Lower-intent channels like content downloads or webinar signups decay more slowly, if most of your volume is low-intent, the dollar impact here will run lower than the model suggests.