Google Ads schedules and budgets: three ways spend drifts from what you agreed
A weekday-only schedule that still spent on weekends, a one-day budget rise that stayed for two, and a bigger budget that bought fewer clicks. Real examples from a local service account.
Google Ads spend drifts away from what you agreed more easily than most owners expect, and the drift rarely works in your favour. On one local service account we manage, a weekday-only schedule still spent on weekends, a budget increase approved for one day was still in place two days later, and a larger budget bought fewer clicks. None of these is dramatic. Together they are the reason we compare the live settings with the agreed ones every day.
The weekday-only schedule that leaked
The business runs ads Monday to Friday only. The owner chose that on purpose, so a quiet weekend is the plan working, not a gap to fill.
The daily figures still showed spend on weekends: A$27 on Saturday 3 October, A$27 on Sunday 4 October and A$20 on Saturday 10 October. All were far below a weekday, but they were not zero. Two lessons came out of that.
First, weekend numbers were not a performance problem. An earlier analysis of ours treated low weekend leads as a weakness, and the owner pointed out that weekends are meant to be off. The fair way to judge this account is on weekdays only.
Second, weekend spend where none is intended means the schedule is not excluding those days. We flag that as a leak to check in the Ads interface, because a schedule can be set on one campaign and missing on another, or be overridden by another setting. We report it and the owner decides.
The temporary budget rise that did not end
On 5 October we agreed to raise one campaign's daily budget from A$60 to A$90 for Tuesday 6 October only. The plan was to put it back on the 7th.
The revert was a line in a tracking file that nobody ticked. At 4:20 pm on 7 October the budget was still A$90, and the account had already spent A$133 by mid-afternoon, against an average of A$68 a day in September. The owner noticed before we did.
That is our mistake, and it changed our process:
- When a temporary change is approved, we schedule the revert at that moment, with a reminder and a dated line in the client's tracker.
- Our daily check compares every live budget with the budget we expect, and marks a mismatch as high priority until it is resolved.
If you ask an agency for a one-day change, ask how the change will be undone and who checks.
Budgets are not hard caps
A third source of surprise is that the daily budget is an average. Google may spend up to double the daily budget on a given day, provided the month stays within the daily figure multiplied by the average days in a month.
On this account, one campaign with a A$60 daily budget spent A$82 on 2 October and A$119 on 5 October. Nothing was misconfigured. If you are watching a daily figure, expect it to swing, and judge spend over a week or a month.
A bigger budget that bought fewer clicks
Before 1 October the account's budget was lifted to around A$95 a day, aimed at the share of impressions the campaigns were losing to budget. Comparing September with 1 to 5 October:
| Measure | September | 1 to 5 October |
|---|---|---|
| Spend per day | A$68.33 | A$73.55 |
| Clicks per day | 30.6 | 23.8 |
| Average cost per click | A$2.23 | A$3.09 |
| Impression share lost to budget | 42.6% | 14.8% |
| Impression share lost to rank | 34.7% | 63.7% |
The budget lift did what it was meant to, since the share of impressions lost to budget fell sharply. But the share lost to rank rose by almost as much, and the overall impression share barely moved, from 22.7% to 21.5%. More money was going in and fewer clicks were coming out.
Our reading, not a proven cause, is that the budget cap had been hiding a different limit. Once the cap was removed, the campaigns were bottlenecked by ad rank, which depends on bid and ad quality, and extra budget under a click-maximising strategy bought more of the expensive clicks. Five days is a short window, partly a weekend, and we would not build a theory on it alone. The practical point stands: "limited by budget" in the Ads interface does not mean that more budget will fix the account. Check what is limiting you first.
What to check in your own account
- Open the campaign's ad schedule and compare it with the days you intended.
- Look at spend by day of week for the last month.
- Write down any temporary change, with a date to undo it and a name.
- Compare cost per click and clicks per day before and after any budget change, not only total spend.
Where we fit
Watching these settings daily is the dull part of managing an account. If you use our Ads management add-on at $549 a month, you keep your own Google Ads account and pay Google directly for spend, so you can see every dollar in your own login. Our pricing page has the details. For the conversion numbers behind judging an account, see why Google Ads can report ten times your real leads.
Common questions
Why is Google Ads spending on days I turned off?
An ad schedule only applies if it is set on the campaign and excludes those days. If spend shows up on a day you meant to exclude, check the campaign's ad schedule in the Ads interface before assuming a reporting error.
Can Google Ads spend more than my daily budget?
Yes. On a given day Google can spend up to twice the daily budget, as long as the month does not exceed the daily budget multiplied by the average number of days in a month.
Will a bigger budget get me more clicks?
Not necessarily. If the limit on your account is how well your ads rank rather than how much you can spend, more budget can mean more expensive clicks and no more of them.