$5/day ads work for engagement but hit limits on conversions without sufficient data.
$5/day isn't meaningless, but it sits at the floor of what Meta can work with efficiently. What you get depends entirely on your campaign goal.
For traffic or engagement campaigns, $5/day works fine, clicks are cheap and plentiful, so Meta's algorithm gets enough signal to optimize. But once your goal shifts to conversions (sales, signups, leads), that same budget becomes a real constraint.
Meta recommends around 50 conversions per week per ad set for its algorithm to learn properly [1]. At an average eCommerce ROAS of 2.05 [2], hitting that threshold usually takes more spend than $5/day can deliver, you're technically running ads, but starving the algorithm of the data it needs.
$5/day
bare floor, engagement only
$10–30/day
realistic testing budget
$50–100/day
small brand, trustworthy data
Here's what matters more than the dollar amount, though: are you boosting the right post? A mediocre post with $100/day will still underperform. A post that's already resonating organically, strong engagement, comments, shares, can surprise you at just $5–$10/day.
Most people boost posts that haven't proven themselves yet, then blame the budget when results disappoint. If you're running your own page in-house, the smarter move isn't debating whether $5 is enough, it's identifying which posts are already working, then boosting those with a budget matched to your conversion goal. That's the logic behind rules-based boosting: you only spend on posts that have already earned it.
See our benchmarks page to understand what good results actually look like before you decide on budget.