# What is a campaign budget on Meta?

> A campaign budget is the money you let Meta spend on a campaign. Daily vs lifetime budgets, how far spend can overshoot, with a worked example in rupees.
- **Author**: Marxx
- **Published**: 2026-11-14
- **Category**: Meta
- **URL**: https://marxx.ai/library-glossary/campaign-budget

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A campaign budget is the amount you let Meta spend on a campaign. You set it as a daily budget or a lifetime budget, on the campaign or on each ad set. A daily budget is a spending target for the week, not a fixed cap for each day ([Meta Help Center](https://www.facebook.com/business/help/190490051321426), checked 2026-10-20).

## Daily vs lifetime

| | Daily budget | Lifetime budget |
|---|---|---|
| What you set | An approximate amount per day | A total for the whole run |
| How Meta spends | Can run over on good days, under on weak days | Tries to spread it evenly across your dates |
| Best for | Roughly the same spend each day | A total you do not want to pass, with room to vary each day |

Meta tries to spread a lifetime budget evenly over the dates you picked ([Meta](https://www.facebook.com/business/help/340985466050775)).

## How far can spend go over?

Meta says it may spend up to 75% over your daily budget on days with better chances. It will not spend more than 175% in one day. In a week, Sunday to Saturday, it will not pass 7 times your daily budget. If you turn on ad set budget sharing, Meta may move up to 20% of your daily budget to other ad sets. The limits then become 210% a day and 8.4 times a week.

## A worked example

Say you set INR 2,000 a day.

- Highest in one day: 2,000 x 1.75 = **INR 3,500**
- Highest in the week: 2,000 x 7 = **INR 14,000**

Quieter days pay back one big day. Your weekly bill stays at INR 14,000 or less.

Now say you run a sale from the 1st to the 10th with a lifetime budget of INR 30,000. Meta aims for about INR 3,000 a day: 30,000 / 10.

## Campaign or ad set?

You can set the budget on the whole campaign with [Advantage+ campaign budget](/glossary/advantage-campaign-budget), where Meta moves money between ad sets. Or you can set it on each ad set, so you control the split. See [ABO](/glossary/abo) and [CBO vs ABO](/compare/cbo-vs-abo).

Give each ad set enough budget to leave the [learning phase](/glossary/learning-phase). Plan the whole month with the [ad budget template](/templates/ad-budget-template).

## FAQ

### Why did Meta spend more than my daily budget?

It is allowed to, on days with better chances. Over the week it will not pass 7 times the daily budget, unless you use ad set budget sharing.

### Can I change a budget mid-week?

Yes. Meta then prorates your spend for the rest of the week and allows a small margin of extra flexibility, up to 25% of your daily budget.

### Which is better, daily or lifetime?

Meta says daily suits steady spend each day. Lifetime suits a total you must not pass, when daily spend can vary.

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