Guides · Facebook and Instagram ads
Is $500 a month enough for Facebook ads?
$500 a month is typically enough to test Facebook and Instagram ads properly, but only if every dollar goes to one offer and one audience. Split it across several audiences, objectives or pieces of creative, and it stops being enough before you have learned anything.
Whether that figure is actually enough for your business comes down to what a lead is worth to you, not the number on its own. We have run accounts where that budget finds a working ad within weeks, and categories where it buys two or three enquiries a month and nothing more.
The $30 a day floor, and where $500 a month sits against it
Meta's own guidance points to around $30 a day as the floor for an ad set to get through the learning phase, the stage where its system works out who to show your ad to. We hold accounts to the same floor when we set up Meta ads: spend less, and Meta keeps resetting the learning phase every time it makes a small optimisation, so you pay for the reset instead of for leads.
$500 a month works out to roughly $16 a day, about half that floor. At $16 a day you can run one ad set, to one audience, for one offer, and nothing else. Add a second ad set or a second audience to test alongside it, and you have halved the budget again, so neither one gets enough spend to leave the learning phase at all.
When $500 a month is enough
$500 a month is enough when the thing you are selling can absorb a high cost per enquiry and still be worth it. If a single job is worth thousands of dollars and you only need a handful of leads a month to fill the diary, an enquiry costing $10 to $15, typical for the local trade and installer accounts we run, still leaves plenty of margin on $500.
It is also enough as a test, not as a scale-up. $500 a month answers one question: does this offer, audience and piece of creative get a response at all. It will not tell you which of three audiences performs best, because none of them gets enough spend to answer that with any confidence. Work out what you can actually afford to pay per enquiry before you spend the first dollar, using something like our ad spend calculator, so you know whether the result you get back is a win or a loss.
When $500 a month will never be enough
If your category is naturally expensive to acquire, $500 a month stops being a test and becomes noise. A software demo enquiry has run at around A$175 each on the B2B accounts we manage, so $500 buys two or three enquiries in a good month. That is not enough data to tell you whether the ad works, and no amount of creative discipline fixes a budget that is structurally too small for the enquiry cost in your category.
The same applies to other considered purchases. Legal enquiries have run at around A$25 each on the accounts we run, so $500 a month gets you about twenty enquiries if everything goes right. That might be enough to spot a pattern, but it leaves no room to also test a second audience or a second piece of creative at the same time.
The fastest way to waste $500 a month: spreading it too thin
Most accounts that fail on a small budget do not fail because $500 was too little. They fail because it got split too many ways, with each slice too thin to leave Meta's learning phase. A common version looks like this:
- One audience for Facebook, one for Instagram
- A retargeting set for people who already visited the site
- A lookalike audience built from past customers
- A broad test with no targeting at all
Run all four at once on $500 a month and each one gets roughly $3 a day, which buys no learning at all. One offer, one audience, one piece of creative, run until it either works or clearly does not, is the only way $500 a month tells you anything. Resist the urge to give it options. Options are what a bigger budget buys.
What discipline on a small budget looks like
Swift Air, a ducted heating installer in Auckland, is a useful example of what focus does on a modest budget. Since the agreement started on 13 April 2026, the account has spent $3,014 on Meta ads and generated 222 enquiries, 13 of which turned into jobs worth $145,626, a 48.3x return. See the full Swift Air results for the breakdown.
None of that came from a bigger budget. It came from one strong video ad doing most of the work, and from not splitting the spend across competing creative while that ad was proving itself. The lesson is not that a small budget guarantees this result. It is that a small budget run with discipline beats a bigger one spread thin.
How to judge whether it is working, in the first month
Suppose you need an enquiry to cost $30 or less to stay profitable, and after a month your actual cost per enquiry comes back at $45. That tells you the audience or the creative is wrong, not the budget. Set that number before you start, not after.
Give it three to four weeks before judging anything. Meta's learning phase alone can eat the first week, and a single strong or weak day will distort a budget this small far more than it would distort a much larger account. Judge the whole test, not the worst day inside it.
What to do if $500 is genuinely all you have
Pick the single most likely audience and the single strongest offer you have, and put all of it there for at least three to four weeks before judging anything. Read the full breakdown of what Facebook ads cost in NZ for how budgets scale up once you have proof the first one works.
If you are already spending and still are not sure whether it is working, that is a different problem to solve before adding more budget. A free ads audit will tell you if the account itself is the issue before you decide the budget is.