In this guide

A campaign has spent less than planned. There is still budget available, but the end date has not moved. Before raising a bid or changing the audience, establish how far behind it is and what is limiting delivery.

Pacing compares delivery with the campaign schedule. You can track spend, impressions, or another agreed delivery goal. This guide uses spend and an even daily plan; the same arithmetic works for an impression goal if you use impressions throughout.

First, make sure the shortfall is real

Use a completed reporting day. At 10 a.m., today’s spend is not comparable with a full day’s target. Check the report’s time zone and refresh time, then use the last day with sufficiently complete data.

Confirm that the budget and spend cover the same campaign, dates, currency, and costs. A media-only budget needs media-only spend. If the budget includes fees, use a matching cost measure. A total campaign budget also needs a total campaign report, not one placement’s spend.

Then check the approved schedule. Even pacing means allocating the same amount to each day. A campaign weighted toward weekends or a promotion may be exactly where it should be, despite falling below a straight-line target. Use its planned cumulative spend as the comparison. Platform pacing settings can also distribute spend differently; see Google’s explanation of pacing options.

If two reports disagree, work through the reporting discrepancy checks before changing delivery settings.

Work out what catching up requires

Consider an illustrative $12,000 campaign running from October 1 through October 20, with both dates included. It should spend evenly across all 20 days. At the end of October 7, reported spend is $2,800.

Measure Calculation Result
Original daily target $12,000 ÷ 20 days $600
Planned spend through October 7 $600 × 7 days $4,200
Spend shortfall $4,200 − $2,800 $1,400
Pace against plan $2,800 ÷ $4,200 × 100 66.7%
Remaining budget $12,000 − $2,800 $9,200
Remaining days, October 8–20 20 − 7 13
Required daily spend from October 8 $9,200 ÷ 13 About $708

Getting back to $600 a day will not recover the shortfall. At that rate, the campaign would finish at $10,600: $2,800 already spent plus $7,800 over the remaining 13 days.

The required average is now about $708 per day. That is 18% above the original $600 target and 77% above the $400 daily average achieved so far. Those comparisons explain the size of the recovery task more clearly than “33% behind pace.”

Use the campaign pacing calculator with budget 12000, spend 2800, start October 1, 2026, end October 20, 2026, and spend-through October 7, 2026. Its dates are inclusive, and spend-through means the end of a completed day. Keep the unrounded result for planning; $708 is rounded for readability.

This calculation assumes every remaining day can deliver. If the campaign runs only on selected days, use the remaining eligible days or the actual daily plan. A higher required average is a planning target, not evidence that the inventory can support it.

Find where delivery is being restricted

Start with what changed. Did delivery stop abruptly, slow down after an edit, or remain low from launch? Compare daily totals, then break out the affected placement, ad group, line item, or creative. Keep the dates and cost definition consistent.

Work through these checks in order:

  1. Status and dates. Confirm the campaign and the parts beneath it are active. Look for pauses, incorrect start or end dates, and schedules that exclude the intended hours.
  2. Budgets and caps. Check the daily allowance, remaining budget, and any shared or parent-level limit. Increasing one component’s budget may accomplish nothing if a higher-level budget is restricting it. Google documents this interaction between budgets.
  3. Creative eligibility. Confirm approved ads are assigned and match the available sizes and formats. An uploaded asset is not necessarily ready to serve.
  4. Audience and inventory. Check whether the combined geography, device, placement, audience, and exclusion rules leave enough eligible opportunities. Inventory means the ad space available to buy.
  5. Frequency limits. Check whether repeat exposures are being blocked by a cap, especially with a small audience.
  6. Auction losses, where applicable. If the campaign is eligible and bidding, inspect loss reasons, bid floors, and win rates. A bid floor is the minimum price accepted for an opportunity. Reserved inventory needs the seller’s availability and delivery checks instead.

Use the platform’s delivery diagnostics to distinguish these causes. Google’s impression-loss documentation provides examples of creative, frequency, budget, pacing, and auction restrictions. The labels differ across systems; follow the evidence in the platform running the campaign.

Choose a change that addresses the cause

Write down the observation before the proposed fix. “The required average is $708, but an explicit daily cap is $600” is actionable. “Spend is low, so increase everything” is not.

In that example, review the cap within the approved campaign budget and check for other limits. If creatives are pending approval, resolve that instead. If eligible supply is too small, take a specific proposal to the campaign owner: an additional approved format, more eligible inventory, or a revised schedule.

Some systems already redistribute unspent budget automatically. Check the active pacing setting before trying to add a second catch-up adjustment. Microsoft’s guaranteed-delivery documentation illustrates how catch-up behavior can vary by setting.

Where practical, change one meaningful variable at a time and record the time, reason, and expected effect. Preserve the agreed audience, quality requirements, and cost limits. Changes to those commitments need the campaign owner’s approval.

Check whether the recovery is working

Set the next review time when you make the change. Allow for reporting delay and enough delivery to judge the result; a campaign close to its end date needs closer attention than one with weeks remaining.

At that review, check both delivery and quality. Did daily spend increase toward the required average? Did costs, placements, or results change in a way that needs attention? Spending the budget is only one part of meeting the brief.

Recalculate from the latest completed reporting day. If the example campaign spends $650 on October 8, cumulative spend becomes $3,450. With $8,550 left over 12 days, the required average rises to $712.50 per day. Delivery improved, but the recovery is still falling short.

If the required rate looks unattainable, raise the issue while there is time to decide. Present a forecast with its assumptions and the available choices. An extension, revised delivery commitment, or other commercial remedy depends on the agreement; do not promise it before approval.

Send a status update people can act on

Keep the update short enough for someone to make a decision:

Through October 7, the campaign has spent $2,800 against a planned $4,200. That leaves $9,200 over 13 days, requiring about $708 per day. An explicit $600 daily cap is below that requirement. Proposed action: review the cap with the campaign owner, confirm the approved budget and other delivery limits, and check the first complete reporting day after the change. Recovery remains subject to available inventory and campaign performance.

Include the campaign ID, reporting time zone, named owner, and next review time in the actual handoff. Link the report and change log so the next person can verify the numbers.

For the checks that should be agreed before a campaign starts, use the campaign launch checklist.

AdOpsNow Editorial

Examples use illustrative data. See our editorial standards or report a correction.