Why is my weekday-only Google Ads campaign spending more than its daily budget?

TofuAnswer by the Tofu team · checked

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Because Google changed budget pacing for ad schedules on June 1, 2026. When a schedule turns off whole days, such as weekends, Google now aims to spend the full monthly limit, 30.4 times your average daily budget, on the days the campaign still runs. At $100 a day, a weekday-only campaign used to aim for $100 times the number of weekdays; now it aims for $3,040, about $132 to $152 per weekday. Google still never bills more than twice the daily budget in one day. To spend a set amount, divide your monthly target by 30.4.

As of October 2026.

What exactly changed on June 1, 2026?

Google's pacing goal changed for schedules that switch off days of the week. Its billing limits did not.

Before June 1, 2026Since June 1, 2026
Pacing goal when a schedule turns off days of the weekDaily budget times the days scheduled to run30.4 times the average daily budget, spent on the days still on
Daily spending limit2 times the average daily budgetUnchanged
Monthly spending limit30.4 times the average daily budgetUnchanged
Days you turned offCampaign doesn't runUnchanged: "Google won't run your campaigns on days when they are turned off"

Schedules that turn off only some hours within a day aren't affected. The change applies to every campaign type that supports ad scheduling, including Search, Performance Max, Display, Video and Shopping. It doesn't change pacing for Local Services ads, Hotel Commission ads or Smart campaigns, and App campaigns don't support ad schedules. Google's own wording is that the system "will pace to reach this full monthly limit regardless of how many days the campaign is scheduled to be active."

How much more will a weekday-only campaign spend?

Up to about half again as much in a month, if the campaign can find the traffic. Google's own example is a campaign meant to spend $2,000 over 20 days at $100 a day:

  • Before: it paced toward $2,000 ($100 × 20).
  • Now: it paces toward $3,040 ($100 × 30.4). Over 20 active days that averages $152 a day, under the $200 daily limit.
  • To spend $2,000 again, Google says set the daily budget to "~$66." The exact figure is $2,000 ÷ 30.4 = $65.79. At $66 the goal is $2,006.40, so $66 runs $6.40 over.

A weekday-only schedule runs 20 to 23 days a month. Here is what a $100 daily budget does:

Weekdays in the monthExampleGoal beforeGoal nowAverage per weekday now
20February 2027$2,000$3,040$152.00
21November 2026$2,100$3,040$144.76
22October 2026$2,200$3,040$138.18
23December 2026$2,300$3,040$132.17

These are ceilings, not promises. Google says actually reaching them depends on "inventory availability, competition, or bid strategy targets." A B2B campaign that already struggles to spend its budget on thin search volume may see little change.

Is Google charging me more than my budget?

No. You still won't be billed more than twice your average daily budget on any day, or more than 30.4 times it in a month. Those limits were the same before June 1. What changed is how hard Google tries to reach the monthly limit when you've switched days off.

In rare cases a campaign's served cost goes past those limits; Google says you'll never pay the difference. To compare the two, go to Report editor in the Campaigns menu, open the Template gallery, and under Billing select Billed cost. The report lists served cost and billed cost for each campaign.

What daily budget should I set for a monthly target?

Divide the monthly target by 30.4, however many weekdays the month has. For $3,000 a month, that's $3,000 ÷ 30.4 = $98.68 a day.

  • Campaigns scheduled for 16 days or more a month, which includes every weekday-only schedule: the most it can spend is daily budget × 30.4.
  • Campaigns scheduled for 15 days or fewer (for example, Tuesdays and Thursdays only): the most it can spend is (daily budget × 2) × active days, and Google says to expect about that much if the campaign is limited by budget. Set the daily budget to the monthly target ÷ (2 × active days).
  • Changing the budget mid-month: the rest of the month paces to the new daily budget times the remaining calendar days, "not the remaining number of days the campaign is scheduled to run." Spend on an active day still won't exceed twice the new budget (on the day of the change, twice the highest budget you set that day). The month's limit becomes what you've spent so far plus (new daily budget × remaining calendar days).
  • Changing only the schedule mid-month: the goal stays at 30.4 times the daily budget.
  • New campaign mid-month: the goal is based on the calendar days left in the month, whatever the schedule.

Google also suggests automated rules for planning budget changes ahead.

Should I use a campaign total budget instead?

For a fixed flight, yes. With a campaign total budget you set one amount and a start and end date, and Google says you'll "never be charged more than your total budget." Google added Search, Performance Max and Shopping in January 2026, starting as an open beta; its help now lists Demand Gen, Search, Standard Shopping, Performance Max and YouTube.

The limits matter for B2B:

  • Only new campaigns. An existing campaign can't switch from an average daily budget, and you can't change the budget type after you create a campaign.
  • Search flights run 3 to 90 days. An always-on campaign would need a new campaign each flight.
  • No daily spending limit. After slow early days, one day can run well above the flight's daily average while Google catches up.
  • Not with shared budgets.
  • No word on ad schedules. Google's total budget pages don't say how a total budget interacts with an ad schedule, so watch daily spend in the first week.

Do shared budgets or account budgets help?

They help with different things, and neither avoids the change.

  • Shared budget. One average daily budget shared by several campaigns, so money one campaign doesn't use can go to another. Google says all campaigns in a shared budget, "with or without ad schedules," follow the new pacing. Set it the same way (monthly target ÷ 30.4). Shared budgets work on Search, Shopping, Display and Video campaigns, not Performance Max. To make one: select the Tools icon, open Budgets and bidding, select Shared budgets, then the plus button.
  • Account budget. A cap on total spend across every campaign in the account for a date range. When costs reach it, "all ads in the account will stop running" until the next account budget starts. It doesn't spread spend across days or campaigns. Google describes it as a tool for advertisers who pay by monthly invoicing, which Google offers to businesses that meet requirements including at least one year as a registered business, an account in good standing for six months, and at least $5,000 a month in spend in any 3 of the last 12 months. An account that has never spent $5,000 in a month won't qualify.

Should I keep the weekend schedule at all?

Keep it if weekend clicks are worth less to you, but lower the daily budget with it. Since June 1, switching weekends off no longer cuts monthly spend on its own; it moves that spend onto weekdays. If you also pause for holidays, should you pause B2B ads over the holidays covers how the same rule plays out in December.

Where Tofu fits

Tofu Ads Agent (our product) sets the bidding strategy, budgets and schedule for the Google Search campaigns it builds. Its weekly budget recommendations stay proposals until someone on your team approves them, and campaigns are staged in your own account switched off until a person turns them on. It doesn't change how Google paces spend: a weekday schedule it sets follows the same 30.4 rule. It doesn't set up account budgets or monthly invoicing.

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