Running a small business has become more expensive on every line of the ledger.MYOB’s 2026 Annual Business Monitor puts the average rise in overheads at $1,200 a month, with insurance premiums alone up $1,800 over the past year. The money coming in hasn’t kept pace either: GoCardless’ latest Pursuing Payments report found 63% of SMBs lose an average of 1.4 hours a week chasing late payments, and half are waiting longer to be paid than they were a year ago.

April’s KiwiSaver employer contribution increase from 3% to 3.5% of every eligible employee’s pay, alongside the minimum wage rising to $23.95 an hour, has only tightened the squeeze. When costs rise faster than cash arrives, it pays to know your working capital funding options before you need them.

This guide walks through how working capital finance works, the main products available, what lenders assess, and how to work out which option fits your situation.

How working capital financing works

Picture a retailer heading into the summer trading peak. Stock orders go out in September, casual staff come on in October, and the marketing spend ramps up well before the tills get busy. The revenue those investments generate won’t land until December or January. For three months, money is leaving the account faster than it’s arriving.

Working capital financing exists to bridge that gap. It’s any form of funding designed to cover a business’s short-term operational costs such as wages, rent, supplier payments, and stock, rather than long-term asset purchases or expansion projects.

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A loan to buy a new warehouse is investment finance. A facility that helps you pay suppliers while you wait on customer payments is working capital finance. Different problem, different solution. And when the gap between what your business holds in cash, inventory, and receivables and what it owes in payables and short-term debt gets tight, even a business with strong revenue can find itself unable to cover next week’s costs.

It happens to more businesses than you’d think.

What causes cash flow gaps in healthy businesses

In most healthy businesses, a cash flow gap is a side effect of momentum, with growth outpacing the speed at which cash moves through the business.

Common working capital triggers for SMEs

Trigger What it looks like
Seasonal revenue dips Fixed costs don’t pause when sales slow down
Late-paying customers Work delivered, invoice sent, payment weeks away
Upfront contract costs Outlay required before the first dollar comes in
Unexpected expenses Equipment, compliance, disputes on no one’s timeline
Growth opportunities Bulk deals, new hires, and better locations won’t wait