Quick answer
Borrowing for ad spend makes sense when each new customer repays their acquisition cost within a period the business can comfortably carry, and there's stock to fulfil the orders. Australian online businesses typically use a line of credit or short-term unsecured facility sized on turnover. If customers lose money even after repeat orders, funding only makes the loss bigger.
Key points
- The test is CAC payback, not dashboard ROAS.
- Strip GST out of revenue before judging whether a campaign is profitable.
- A line of credit suits ad spend because you can draw in step with results.
- Fund ads and the stock to fulfil them together, or the campaign stalls.
Paid ads are the growth engine for most young online brands. They’re also the easiest place to lose money quickly, because the cost is immediate and the return arrives in dribs and drabs. Funding ad spend isn’t good or bad on its own. It depends entirely on what one customer is worth compared with what they cost to win.
When does borrowing for ads actually make sense?
Borrowing for ads makes sense when three things are true at once:
- Your contribution per order is positive and known. After GST (if registered), landed product cost, shipping and payment fees, each order leaves money on the table.
- Customers repay their acquisition cost reasonably fast. Either on the first order, or within a few months once repeat purchases are counted.
- You can fulfil the demand. There’s stock on hand, or funded, to meet the orders the extra spend creates.
If any of those is shaky, more money makes the problem bigger rather than solving it. A campaign that loses $10 per new customer at $5,000 a month loses the same $10 per customer at $50,000 a month, and often more, because acquisition costs tend to rise as you push harder into an audience.
Which numbers do I need to know first?
These four figures do most of the work:
| Metric | How to calculate it | What it tells you |
|---|---|---|
| Contribution per order | Order value less GST, product, shipping and fees | What each sale really leaves you |
| Break-even ROAS | Order value ÷ contribution per order | The ROAS needed to cover ads on the first order |
| CAC | Ad spend ÷ new customers (not total orders) | What a new customer costs to acquire |
| CAC payback | Months until contribution covers CAC | How long your cash is tied up per customer |
The trap many founders fall into is judging campaigns on the ROAS their ad platform reports. That figure usually includes GST and ignores product and shipping costs, and it may count returning customers who would have bought anyway. The ad-spend payback calculator works all four numbers out from a single order and one month of ad data, and our break-even ROAS guide explains the thinking in more depth.
How is ad spend usually funded?
A line of credit is often the natural fit. You draw as campaigns scale, and pay down as the orders come in. If a creative stops performing, you stop drawing. The limit is typically sized on your turnover and bank statements, with unsecured and line-of-credit options usually ranging from $5,000 to $500,000.
A short-term unsecured loan can suit a planned push with a clear end date: a product launch, a peak-season campaign or a new market test. You know the amount and the repayments up front, which makes planning easier, but the repayments don’t flex if results disappoint.
A property-secured business loan from $20,000 is more common when the ad budget is part of a bigger plan, such as a rebrand plus stock plus a first hire, or when trading history is too short for unsecured lending.
Whichever shape you consider, look at the total dollar cost of finance over the term and put it into the calculator. We don’t publish rates, because every facility is priced on the business in front of the lender, but the cost itself is what you need to test against your payback.
If your numbers already look healthy, see what your business could qualify for. It takes about a minute and doesn’t touch your credit file.
Illustrative example: scaling a proven campaign
Illustrative only. An activewear label averages $110 per order, GST inclusive. After GST, landed product cost, shipping and fees, each order contributes about $44. Break-even ROAS is therefore around 2.5x. Last month $8,000 of ads brought 200 new customers, a CAC of $40, and customers average 1.6 orders a year.
Because the first order already covers acquisition cost, every extra customer adds to cash rather than draining it. The constraint is stock: doubling spend would need roughly twice the inventory within six weeks. The founders look at funding that covers both the extra ad budget and the reorder, drawn in two stages so they can check CAC hasn’t blown out before committing the second half.
How do I keep borrowed ad spend under control?
Treat borrowed ad budget like an investment with rules, not a bigger wallet:
- Set a CAC ceiling before you spend. If new-customer cost drifts above it for a week, pause and fix the creative or audience before drawing more.
- Draw in stages. Fund the first tranche, check results against your payback target, then release the next.
- Watch new versus returning customers. A campaign that mainly re-sells to existing customers isn’t growing the business as fast as the dashboard suggests.
- Protect the repayment. Keep enough cash aside to meet a few months of repayments even if you switch every campaign off.
Red flags that say “not yet”
- Each order loses money before you spend anything on ads.
- You don’t know your new-customer count, only total orders.
- CAC has been rising month on month and you’re hoping scale will fix it.
- Repeat purchase is assumed rather than observed.
- The plan depends on one creative or one influencer continuing to perform.
None of these is permanent. Fixing price, product cost or retention first usually does more for your business than any loan could.
Put your payback numbers to work
If customers are earning back what they cost and you’ve got a plan for the stock, funding can let good campaigns run at the pace they deserve. Start a quick enquiry with your figures handy. There’s no credit check involved in asking, your application isn’t auctioned off to a list of lenders, and a real person who understands online marketing will call you. Give us accurate numbers on the form — monthly revenue, time trading and any property — so we can point you to the right option the first time. If you’re funding stock as well, read about inventory finance too.
Frequently asked questions
Can a business loan be used for Facebook or Google ads?
Yes. Business funding can be used for marketing, including paid social and search, provided it's for business purposes. Lenders mostly care that the business can meet repayments, so the unit economics behind the ads carry a lot of weight.
What ROAS do I need before borrowing for ads?
There's no universal number. Work out your own break-even ROAS by dividing average order value by the contribution you keep per order after GST, product cost, shipping and fees. You need to beat that on the first order, or have repeat purchases that make up the difference quickly.
Is it better to use a credit card for ad spend?
Cards are convenient but can be a costly way to carry a balance month after month, and limits are usually small. A facility sized to your turnover can suit sustained campaigns better. Compare the total dollar cost of each option for your situation.
How do lenders view marketing-heavy businesses?
They look at whether revenue is steady or spiky, whether margins survive the ad costs, and whether the business has other debts. A store that spends heavily but shows consistent statements and healthy contribution is a very different risk from one that's buying growth at a loss.
What if my ads stop working after I borrow?
That's the real risk, so plan for it. Draw funds in stages, set a stop-loss on CAC, and keep enough cash to meet repayments for a few months even if you pause campaigns entirely.