How do I decide the daily budget for my first Facebook ad campaign?

Meta's delivery system learns from the results you optimise for, whether that is a WhatsApp conversation, a lead or a purchase. Meta's own guidance is that an ad set needs around fifty of those results within a week to leave the learning phase. You do not have to hit that number to get value, but the closer you are, the steadier the costs. That gives you a way to work out a budget instead of guessing.

A hypothetical example, with made-up numbers. Suppose a test week shows a WhatsApp chat costs PKR 280. Fifty chats a week would need about PKR 14,000 a week, or PKR 2,000 a day. If that is too much, you have three honest options: accept a slower, noisier learning period on a smaller budget; optimise for a cheaper, earlier action such as landing page views while you gather data; or narrow to one product and one audience so the budget is not split.

What does not work is spreading the same small budget across five ad sets for five audiences. Each one learns from a trickle, none stabilises, and you end up comparing numbers that are mostly luck. One ad set with three to five creatives and a broad-enough audience around your area usually beats an elaborate structure on a first campaign.

Treat the first two weeks as paid research. Track not only the cost per chat in Ads Manager but how many of those chats turned into bookings or orders. That second number is the one that tells you whether to raise the budget, and it only lives in your WhatsApp and your sales book, not in Meta's reporting.