What is a pacing multiplier?

A factor applied to every bid, lowered when spend runs ahead of plan and raised when it falls behind, so the budget is spread over the day without changing how leads are valued relative to each other.

Is it better to spend the budget evenly or as fast as possible?

Usually evenly, following the hourly supply curve, because lead value varies through the day. Spending as fast as possible only makes sense when the budget would never run out anyway.

What does the calculator simplify?

It assumes lead volume is flat across the remaining hours and responds to the bid at one fixed elasticity. Real pacing systems use an hourly volume forecast and adjust the multiplier every few minutes. The default inputs are an example, not a benchmark.

How do I avoid overspending at the end of the day?

Pace continuously from the start of the day rather than reacting in the evening, and limit how quickly the multiplier can change so bids do not swing between overspending and underspending.

All tools

Budget Pacing Calculator

When will your daily lead budget run out at the current pace, and what bid multiplier spreads it across the rest of the day?

Enter today's budget and spend so far. The calculator projects when the budget runs out at the current pace and suggests a bid multiplier that spreads the rest evenly over the remaining hours.

Daily budget$5,000Spent so far today$2,400Hour of day10:00Expected leads per hour at current bid12Average cost per lead at current bid$25

Budget left

$2,600

Runs out at current pace

18:40

Even pace needed

$186/hr

Suggested bid multiplier

0.83×

Red: current pace. Blue: suggested pace.

This simplified model assumes lead volume is flat across the remaining hours and rises with the bid at a fixed elasticity of 1.5, and it caps the multiplier between 0.5× and 1.5×. Real pacing systems use an hourly volume curve and adjust the multiplier continuously.

How it works

If a daily lead budget runs out by mid-afternoon, you never see the leads that arrive later in the day. This calculator takes your budget, spend so far, the hour and your current buying rate, projects when the budget runs out, and suggests a bid multiplier that spreads what is left evenly over the remaining hours. Use it when you are running ahead of or behind plan and want a measured adjustment rather than a hard stop.

Current spend rate is leads per hour times cost per lead, and the remaining budget divided by that rate gives the run-out time. The even pace is the remaining budget divided by the hours left in the day. The model assumes lead volume rises with the bid at a fixed elasticity of 1.5 and cost per lead scales with the bid, so spend rate scales with the multiplier to the power 2.5. The suggested multiplier is capped between 0.5× and 1.5×.

R = n\,c, \qquad R^{*} = \frac{B - S}{24 - t}

t_{\text{out}} = t + \frac{B - S}{R}

g = (R^{*}/R)^{1/(1+\varepsilon)}

m = \min\bigl(1.5,\ \max(0.5,\ g)\bigr)

where

$B$: daily budget
$S$: spent so far
$t$: current hour of the day
$n$: leads per hour at the current bid
$c$: cost per lead
$R,\ R^{*}$: current and even-pace spend per hour
$\varepsilon$: how strongly volume responds to the bid (1.5)
$g,\ m$: uncapped and capped bid multiplier (0.5–1.5)

Frequently asked questions

What is a pacing multiplier?: A factor applied to every bid, lowered when spend runs ahead of plan and raised when it falls behind, so the budget is spread over the day without changing how leads are valued relative to each other.
Is it better to spend the budget evenly or as fast as possible?: Usually evenly, following the hourly supply curve, because lead value varies through the day. Spending as fast as possible only makes sense when the budget would never run out anyway.
What does the calculator simplify?: It assumes lead volume is flat across the remaining hours and responds to the bid at one fixed elasticity. Real pacing systems use an hourly volume forecast and adjust the multiplier every few minutes. The default inputs are an example, not a benchmark.
How do I avoid overspending at the end of the day?: Pace continuously from the start of the day rather than reacting in the evening, and limit how quickly the multiplier can change so bids do not swing between overspending and underspending.

Bidding