---
title: "Budget Pacing Calculator"
category: Bidding
canonical: https://plato.ai/tools/budget-pacing/
---

# 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?

Free interactive calculator at https://plato.ai/tools/budget-pacing/ (runs in the browser).

## 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×.

`Run-out hour = now + remaining budget ÷ (leads per hour × cost per lead); multiplier = (even pace ÷ current spend rate)^(1 ÷ (1 + 1.5)), capped to 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.