Quick answer
The cash conversion cycle measures how many days a dollar spent on stock takes to return as cash. For an online store it's days of inventory, plus days to receive payouts, minus days of supplier credit. A 90-day cycle means every dollar of growth is tied up for three months. Shortening the cycle frees cash; a long cycle is where working capital or a line of credit helps.
Key points
- Cash conversion cycle = inventory days + payout days − supplier credit days.
- The longer the cycle, the more cash each extra dollar of sales ties up.
- Growth increases the cash needed even when the business is profitable.
- Shorten the cycle by turning stock faster, getting paid faster and negotiating terms.
- Fund the cycle, not the losses — working capital bridges timing.
Every online store founder eventually has the same confusing month: sales are up, the accounts say you’re profitable, and the bank balance is lower than ever. It isn’t a mistake. It’s the cash conversion cycle at work. Once you can measure it, you can plan for it, shorten it and fund it properly.
What is the cash conversion cycle?
The cash conversion cycle, or CCC, measures how long a dollar spent on stock takes to come back to your account as cash. For an online store, it has three parts:
CCC = inventory days + payout days − supplier credit days
- Inventory days — how long stock sits before it sells.
- Payout days — how long between a sale and the money landing in your account.
- Supplier credit days — how long your suppliers let you wait before paying them.
If you hold stock for 60 days, wait 3 days for payouts and pay suppliers upfront, your cycle is 63 days. If a supplier gives you 30 days to pay, it drops to 33 days. That difference is the length of time your money is working for someone else.
How do I calculate my own cycle?
Here’s a step-by-step method using a full year of numbers.
1. Inventory days. Take your average stock value at cost across the year. Divide it by your annual cost of goods sold. Multiply by 365.
2. Payout days. Look at how long your platforms and payment providers take to settle. If different channels pay differently, use a weighted average based on how much each channel sells.
3. Supplier credit days. How long, on average, between receiving stock and paying for it? If you pay deposits before goods are made, this number can be negative, which lengthens the cycle.
| Illustrative store | Days |
|---|---|
| Inventory days (average stock $36,000, annual COGS $220,000) | 60 |
| Payout days (weighted across channels) | 4 |
| Supplier credit days (paid on order, deposit 45 days before arrival) | −45 |
| Cash conversion cycle | 109 |
Illustrative only. In this example, a supplier deposit paid 45 days before goods arrive adds to the cycle rather than reducing it. Every dollar spent on stock is away for about 109 days.
Why does growth make cash tighter?
This is the part that surprises founders. Imagine the store above wants to grow sales by 50%. It needs roughly 50% more stock, bought 109 days before the extra sales arrive. It also needs more ad spend to find the new customers, paid up front. Even if every extra sale is profitable, the business needs a large amount of extra cash to fund the gap.
That’s why fast-growing stores often feel poorest in their best years. The profit is real; it’s just on a delay. The longer the cycle, the more cash growth swallows.
If growth is outrunning your cash, see what funding options fit. There’s no credit check to enquire.
How can I shorten the cycle?
Every day you cut from the cycle frees cash. The main levers:
Turn stock faster
- Reorder smaller quantities more often for proven lines.
- Cut or clear slow-moving variants rather than restocking the full range.
- Use pre-orders for new products, so customers fund part of the stock.
- Keep safety stock for best-sellers only.
Get paid faster
- Understand each platform’s payout schedule and whether faster options exist.
- Encourage payment methods that settle quickly.
- For wholesale customers, shorten terms or take deposits.
Pay suppliers later
- Ask for trade terms once you have a track record.
- Negotiate smaller deposits or balance-on-shipping arrangements.
- Consolidate orders with fewer suppliers to strengthen your position.
Each lever has trade-offs. Smaller, more frequent orders may cost more per unit. Longer supplier terms may cost a price discount. Run the numbers on each change.
Where do GST and tax fit in?
Tax adds its own timing to the cycle:
- GST collected on sales sits in your account until your BAS is due. For quarterly lodgers, due dates are 28 October, 28 February, 28 April and 28 July. It feels like cash, but it’s owed.
- Import GST paid at the border is generally claimable as a credit if you’re registered, but only when you lodge your next BAS. For a big import, that’s a meaningful cash outflow for weeks or months.
- Income tax on profits arrives later still.
Keep GST in a separate account from the moment it lands. That single habit prevents the most common tax-time squeeze. The BAS and tax bill funding page covers what to do if it’s already happened.
How should funding match the cycle?
Funding can’t shorten your cycle, but it can carry it so growth isn’t held back by timing. The key is matching the shape of the funding to the shape of the cycle:
| If your cycle is… | A good fit is often… | Why |
|---|---|---|
| Short and repeating (30–60 days) | A line of credit | Draw per order, repay as stock sells, repeat |
| Long, driven by big imports | A term facility sized to the order | Carries a known amount over a known period |
| Seasonal (big peak, quiet troughs) | A line with room for peak | Draw before peak, clear after |
| Long because stock doesn’t sell | Neither — fix the stock first | Funding slow stock only deepens the hole |
Unsecured and line-of-credit options are typically $5,000 to $500,000, sized on turnover and bank statements. Property-secured business loans from $20,000 suit larger needs or newer stores with property equity. See inventory finance and the line of credit for online sellers for detail.
A monthly habit that helps
Once a month, update three numbers: inventory days, payout days and supplier credit days. Track the cycle on a simple chart. If it’s lengthening, find out why before it becomes a cash problem. If it’s shortening, you’re freeing cash to fund growth without borrowing as much.
Pair it with your unit economics from the ad-spend payback calculator, and you’ll have both halves of the picture: whether each customer makes money, and how long your cash is tied up making it.
Illustrative example: what a shorter cycle frees up
Illustrative only. The store above has a 109-day cycle and plans to grow annual cost of goods sold from $220,000 to $330,000. A rough way to estimate the cash tied up in the cycle is annual cost of goods sold divided by 365, multiplied by the cycle length.
- At 109 days and $330,000 COGS: about $98,500 tied up.
- If the founder negotiates payment on arrival instead of a deposit 45 days early, and trims slow stock to bring inventory days to 50, the cycle falls to around 54 days: about $48,800 tied up.
That’s roughly $50,000 of cash the business no longer needs to find, simply by changing terms and stock discipline. It’s also $50,000 less it would need to borrow. The calculation is rough — real cycles vary across the year — but it shows why every day matters more as a business grows.
Growth tying up your cash? Let’s talk timing
A long cash conversion cycle isn’t a failing — it’s the normal cost of growing a product business. If you’d like help funding it sensibly, start a short enquiry. Asking won’t touch your credit file, your details stay with one real person rather than being spread across a lender network, and we’ll call to understand your cycle. Please be accurate on the form — revenue, months trading and any property — so the first option we suggest fits. For peak-season planning, read Black Friday and Christmas stock funding.
Frequently asked questions
What is a good cash conversion cycle for an online store?
Shorter is better, but there's no universal target. A store selling fast-moving products bought on supplier credit might have a short cycle; a brand importing large production runs might have a long one. Track yours over time and compare it with your own history.
How do I calculate inventory days?
Divide your average inventory value at cost by your cost of goods sold for the period, then multiply by the number of days in the period. For a year, multiply by 365.
Why am I short of cash when my store is profitable?
Because growth needs more stock and ad spend before the sales that pay for them arrive. The longer your cash conversion cycle, the more cash growth consumes. Profit arrives later than the spending that creates it.
Can funding fix a long cash conversion cycle?
Funding can bridge the cycle, so growth isn't held back by timing. It doesn't shorten the cycle. The healthiest approach combines both: work on shortening the cycle while using a sensibly sized facility to carry what's left.
How does GST fit into the cash cycle?
If you're registered, GST collected on sales sits in your account until the BAS is due, and import GST paid at the border comes back as a credit later. Both shift cash timing, so include them in your forecast.