What is the difference between a daily and lifetime budget?
A daily budget is the average Meta aims to spend per day across a Sunday-to-Saturday week, and it is not a hard cap. A lifetime budget is the total you will spend over the whole run of a campaign or ad set, and Meta treats it as a hard cap.
The two budget types differ in what the number promises. With a daily budget you set a per-day average that Meta balances over each calendar week, so single days can run above or below it. With a lifetime budget you set one total for the whole flight, and Meta decides how to spread it across the days. You can use either type on a campaign, through Advantage+ campaign budget, or on an individual ad set.
How does a daily budget spend?
Meta reads your daily budget as an approximate amount per day over a week that starts on Sunday and ends on Saturday. On days with better opportunities it may spend up to 75% more than the daily budget, and on other days less. Two ceilings hold regardless:
- In any day ending at midnight, spend stays at or below 175% of the daily budget.
- In any week ending Saturday at midnight, spend stays at or below 7 times the daily budget.
If you turn on ad set budget sharing, Meta may also share up to 20% of the budget with other ad sets, which lifts the possible single-day spend to 210%. For a $100 daily budget, that means a weekly ceiling of $700, or $840 with sharing on.
How does a lifetime budget spend?
A lifetime budget is the total you are willing to spend over the entire run of the campaign or ad set, and Meta describes it as a hard cap rather than an average. With standard delivery, Meta tries to spend it evenly, but it may spend more on days with better opportunities and less on weaker days. Meta’s example: $100 over a 10-day ad set comes to about $10 a day, and if day one spends only $8, the system tries to make up the gap later in the run.
How do the two types compare?
| Question | Daily budget | Lifetime budget |
|---|---|---|
| What the amount means | Average spend per day over a Sunday-to-Saturday week | Total spend over the whole run |
| Is it a hard cap? | No | Yes |
| Most it can spend in one day | 175% of the daily budget (210% with budget sharing) | No per-day ceiling is stated; the total is capped |
| Runs shorter than one day | Not allowed | Required |
| Budget scheduling for high-demand periods | Available | Not available |
Which one should you choose?
Meta’s guidance is that a daily budget suits you when spending roughly the same amount each day matters, for example when you want a consistent number of daily impressions. A lifetime budget suits you when you must not exceed an overall amount and you can live with uneven daily spend.
What happens if you change a budget mid-run?
For a daily budget, Meta recalculates the target for the rest of the week. If you run $10 a day from Sunday to Tuesday and switch to $20 at midnight on Wednesday, Meta stops aiming for $70 over 7 days and aims for $80 over the 4 days left. A change in the middle of a day is prorated for the hours remaining, and the only guarantee that day is that spend stays under 175% of the highest daily budget in place.
For a lifetime budget, Meta’s minimum-budget guidance says a lowered amount should be at least what you have already spent plus 10% of what you spent over the past 2 days. If you have spent $300 and $100 of it came in the last 2 days, the new budget must be at least $310.
FAQ
Can Meta spend more than my daily budget on a single day?
Yes. Meta may spend up to 75% over your daily budget on days with better opportunities, so a $100 daily budget can spend up to $175 that day. Across the full Sunday-to-Saturday week, spend will not exceed 7 times the daily budget, so the week evens out.
Why did my daily budget run out so quickly?
Meta lists three possible explanations. You may be using accelerated delivery, which can spend a budget in under an hour. The ad set may be in the learning phase, when delivery can be more aggressive. Or your budget may sit close to or below your bid.
Can I use either budget type with Advantage+ campaign budget?
Yes. Both daily and lifetime budgets can be set at the campaign level with Advantage+ campaign budget, or on individual ad sets. Advantage+ campaign budget then distributes the one campaign budget across ad sets in real time, toward the ad sets it sees as having the best opportunities.
Sources
- About budgets (Meta, checked 2 Oct 2026)
- About daily budgets (Meta, checked 2 Oct 2026)
- About lifetime budgets (Meta, checked 2 Oct 2026)
- Lifetime budget (Meta, checked 2 Oct 2026)
- Best practices for minimum budgets (Meta, checked 2 Oct 2026)
- About budget scheduling (Meta, checked 2 Oct 2026)
Drafted with AI and checked claim by claim against the pages linked under Sources. Found a mistake? Tell us via the corrections policy.