Do Facebook ads work for small business? One sum decides

Say you spent 300 on Facebook ads last month and two orders came in. The morning after, the doubt is whether ads work for a business your size, or whether you just paid to learn that they do not.

Facebook ads work for a small business when one order leaves you more than the ads cost to win it. If it leaves you less, each sale costs you money. If it leaves you more, the month you wrote off may have been a good one.

Two orders from 300 of ad spend lose money on a candle that leaves you 19 an order. They make money on a course that leaves you 200. The ads can be identical, and the sum is what differs.

What one order is worth to you

An order is worth what is left of its price after the product and the delivery are paid for. That figure, not the price on the product page, is what the ads have to beat.

Say you sell candles at 40. A candle costs 12 to make, packing and postage cost 7, and the payment fee is 2. That leaves 19. These are example numbers, so swap in yours.

Call the 19 your break-even cost per order: the most you can spend on ads to win one order before it loses you money. Spend 10 and you keep 9, before your own time. Spend 30 and you pay 11 to make the sale.

If buyers reorder, a first order can lose a little and still pay off, but count only the reorders you have seen.

What one order costs you in ads

Divide what you spent on ads by the orders they brought. Meta calls this cost per result and gives it as amount spent divided by results, so check that Ads Manager counts purchases and not clicks.

Your 300 and two orders is 150 an order, against a break-even of 19. To pay 19 an order, the 300 would have to bring about 16 orders.

Add whatever else you pay to get ads made and run, such as an agency's fee or a designer's price, and divide the month's total by its orders. What a Facebook ads agency costs and what ad creatives cost are questions of their own, and this sum is where both land.

Meta's purchase return on ad spend is the same sum from the other side, purchase value divided by amount spent. At a price of 40 and a break-even of 19, any return under 2.1 in sales for each 1 spent loses money.

Meta's page on results says its default attribution setting is 7-day click, 1-day view and 1-day engagement. So Ads Manager can credit an order placed within a day of someone seeing the ad, with no click. Check its count against your store's orders.

When Facebook ads work for a small business, and when they do not

Facebook ads work while what an order costs you in ads stays under your break-even, week after week, on a budget big enough for Meta to learn from. Meta's pricing page puts it as a condition: small businesses can achieve success when the budget is optimised and the objectives are clear.

The margin is thin

Say the candle left 6, not 19. An order could cost 6 in ads at most, and 150 an order is nowhere near. Set last month's cost per result beside your break-even. If it is higher, the price and the costs of product and delivery need a look as well as the ad.

The offer is not wanted

An ad puts your offer in front of people and does not make them want it. Ask whether strangers have bought this, at this price, without an ad. If not, read the Meta ads your competitors are running to see what they offer and what they keep running.

The ad does not make one promise

An ad has a picture and a first line to earn the click. Lay it beside your product page and say in one sentence what it promises. If you cannot, start from writing ad copy from what buyers say, then try testing one change at a time.

The page does not sell

The ad pays for a visit and the page has to turn it into an order. Click your own ad on your phone and buy the product, counting the taps. Why Facebook ads get clicks but no sales is a question of its own, and a page that loses the visit is one answer.

What Meta's 50 results a week means for a small budget

Meta says an ad set usually leaves its learning phase after about 50 results in the week after its last significant edit. If a result is an order, that is 50 orders a week before delivery settles.

At a break-even of 19, 50 orders cost 950 a week, about 136 a day. The 300 a month from the start is about 10 a day, or 70 a week, which would have to buy each order for 1.40.

Meta calls an ad set that cannot get there Learning limited. One fix it lists is an event that happens more often, such as add to cart, which is still not an order.

While an ad set is still learning, Meta says, its results are not necessarily indicative of future performance. Two orders in a month tell you what that month cost, not what ads can do. How much to spend on Facebook ads each day starts from this arithmetic, and how many ads to run at once covers the rest.

Are Facebook ads worth it in 2026

The sum is the same in 2026, so the answer is too: they are worth it at your numbers or they are not. What has moved is what advertisers pay on average. Meta's filing for the second quarter of 2026 says its average price per ad rose 12 per cent on the year before.

Meta works that out as advertising revenue divided by ads delivered, so it is an average over every advertiser, format and country. Meta puts the rise down to advertiser demand and partly to exchange rates, and the figure for the whole of 2025 was 9 per cent. It does not say what your own cost per order did.

If the cost of being shown rises 12 per cent and the share of viewers who buy holds, an order that cost 17 now costs about 19, which is the candle's break-even.

Where Nomi helps with this sum

One term in the sum is the ad, and making it is the part Nomi does. You give it your site once and it drafts your brand, products and buyers for you to correct. Then you ask for a campaign in a sentence, and it plans it, writes the copy and makes the ad in the shapes Meta's placements take. See how a store owner uses Nomi.