Cashflow Forecasting for NZ Small Business: Why Profit Is Not Enough

One of the most common surprises for business owners is discovering that a profitable business can still run out of cash. It happens more often than you'd think — and it's almost always preventable with the right planning.

Cashflow forecasting is the tool that prevents it. This article explains what cashflow forecasting is, why profit figures alone are misleading, and how a rolling forecast can change the way you run your business.

Your profit and loss statement shows revenue minus expenses. If revenue exceeds expenses, you're profitable. Simple enough.

But profit doesn't equal cash in your bank account. The gap between the two is where businesses get into trouble.

Here's why profit and cash diverge:

Timing. You might invoice a client in March but not get paid until May. Your P&L shows the revenue in March. Your bank account doesn't see it until May. In the meantime, you still have to pay wages, rent, and suppliers.

GST. If you're GST-registered, a portion of every dollar you receive isn't yours — it belongs to IRD. Many business owners spend it before the GST return is due, then scramble to find the money.

Loan repayments. Principal repayments on business loans don't appear on your P&L as an expense, but they absolutely come out of your bank account.

Stock and inventory. Buying stock ties up cash before you've sold anything. A growing business that's buying more stock can be profitable and cash-poor at the same time.

Seasonal patterns. Many Canterbury businesses have strong and weak periods. A great summer can mask a difficult winter if you're not planning ahead.

A cashflow forecast is a projection of cash coming in and going out of your business over a future period — typically 3, 6, or 12 months.

It's built from:

• Expected revenue (based on your pipeline, contracts, and seasonal patterns)
• Known expenses (wages, rent, insurance, loan repayments)
• Variable expenses (materials, subcontractors, marketing)
• Tax obligations (GST, provisional tax, income tax)
• One-off items (equipment purchases, large supplier payments)

The output is a week-by-week or month-by-month view of your projected bank balance. It shows you when cash is likely to be tight — before it happens.

The value of a cashflow forecast is not the numbers themselves — it's what you do with them.

Plan your spending. If the forecast shows a tight period in August, you can delay a non-urgent equipment purchase until September. You can't make that decision if you don't see it coming.

Time your invoicing. Sending invoices earlier, or tightening your payment terms, can shift cash into your account sooner. A forecast shows you exactly how much difference this makes.

Arrange finance in advance. Banks are much more willing to extend a credit facility or overdraft to a business that comes to them with a forecast and a plan — not one that's already in trouble. Arranging a buffer before you need it is far easier than arranging it when you're desperate.

Manage provisional tax. Provisional tax is paid in instalments throughout the year. A cashflow forecast ensures you've set aside the right amount and won't be caught short at payment dates.

Make confident hiring decisions. Hiring someone is a significant ongoing cash commitment. A forecast lets you model the impact before you sign the employment agreement.

A cashflow forecast doesn't need to be perfect to be useful. It needs to be directionally correct — good enough to show you when cash is likely to be tight and when you have headroom.

The forecast should be updated regularly — at least monthly — as actual results come in and your expectations change. A forecast that's never updated quickly becomes useless.

In practice, the discipline of maintaining a forecast is as valuable as the forecast itself. It forces you to think about your business's financial future on a regular basis, not just when a crisis arrives.

If you're running a business in Canterbury and you don't have a cashflow forecast, the first step is getting your accounting records up to date in Xero. From there, we can build a rolling forecast that gives you a clear view of what's coming.

We include cashflow forecasting as part of our business advisory service for clients who want it. If you'd like to understand what this would look like for your business, book a free 30-minute consultation.