One of the most common conversations I have with business owners goes something like this: they have been running their business for 15 or 20 years, they have a rough number in their head of what it is worth, and when we do a proper valuation, that number is either significantly higher or significantly lower than they expected.

Both outcomes are a problem. Overestimating means you may be planning a retirement that your business cannot fund. Underestimating means you may be leaving significant money on the table — or selling too early because you do not realise what you have.

Understanding how business valuation actually works — and what drives the number — is one of the most important things a business owner can do before they start thinking about an exit.

How Business Valuation Works in NZ

There is no single method for valuing a business. Different buyers, different industries, and different circumstances call for different approaches. But there are a few frameworks that are commonly used in the New Zealand market.

Earnings-based valuation (EBIT or EBITDA multiples). This is the most common approach for established, profitable businesses. The starting point is your normalised earnings — typically EBIT (earnings before interest and tax) or EBITDA (earnings before interest, tax, depreciation, and amortisation) — and a multiple is applied based on the size, industry, and risk profile of the business.

Multiples in the NZ market vary significantly. A small, owner-dependent trade business might sell at 2–3x EBITDA. A well-systemised professional services firm with recurring revenue might achieve 5–7x. Understanding where your business sits on that spectrum — and why — is the core of a valuation exercise.

Asset-based valuation. More relevant for businesses where the primary value is in physical assets — property, plant, equipment, inventory. Less relevant for service businesses where the value is in relationships, systems, and recurring revenue.

Revenue-based valuation. Sometimes used for early-stage or high-growth businesses where earnings are not yet the right measure. Also used in some industries (like SaaS or subscription businesses) where revenue multiples are the norm.

Comparable transactions. What have similar businesses sold for recently? In a thin market like New Zealand, this data can be hard to find, but it is a useful cross-check.

What Drives the Multiple

The multiple applied to your earnings is where most of the value is created or destroyed. Two businesses with identical EBITDA can have very different valuations depending on their risk profile and growth prospects.

Here are the key factors that drive the multiple up or down:

Owner dependency. As discussed elsewhere, a business that depends heavily on its owner is riskier for a buyer. That risk reduces the multiple. A business with a strong management team and documented systems commands a premium. See our detailed guide on reducing owner dependency.

Customer concentration. If 40% of your revenue comes from one customer, that is a significant risk. Buyers will discount for it. Diversified, sticky customer relationships increase the multiple.

Revenue quality. Recurring revenue — subscriptions, retainers, long-term contracts — is worth more than project-based or transactional revenue. Predictable revenue reduces buyer risk and increases the multiple.

Growth trajectory. A business that is growing is worth more than one that is flat or declining, even if the current earnings are the same. Buyers are buying the future, not just the past.

Margin quality. High margins suggest pricing power, operational efficiency, and a defensible market position. Thin margins suggest vulnerability to cost increases or competitive pressure.

Management depth. A business with a capable, stable management team is worth more than one where everything runs through the owner. This is closely related to owner dependency but distinct — it is about the quality and depth of the team, not just whether the owner is involved.

Systems and processes. A business that runs on documented, repeatable processes is easier to operate and scale. Buyers pay for that certainty.

The Gap Between Perceived and Actual Value

Most business owners have a number in their head that is based on some combination of what they have invested, what they need for retirement, and what they have heard other businesses sell for. That number is rarely the same as the market value.

The gap is usually explained by one of a few things:

• Normalisation adjustments. Your accountant may have legitimately run personal expenses through the business. A buyer will add those back — but they will also scrutinise them carefully. The normalisation process can go in either direction.
• Owner dependency discount. If the business depends on you, the buyer will price that risk in. Many owners do not account for this.
• Industry multiples. Different industries trade at very different multiples. A business owner who has heard that "businesses sell for 3x revenue" may be applying a rule of thumb from the wrong industry.
• Market conditions. The NZ business sale market has cycles. Timing matters.

How to Increase Your Business Value Before You Sell

The good news is that most of the factors that drive valuation are within your control — if you have enough time to act on them.

The structured approach that underpins our work at Ridgeline Advisory is built around systematically addressing the value gaps that a buyer would identify. That means reducing owner dependency, improving revenue quality, building management depth, and cleaning up the operational and financial story.

This work takes time — typically two to four years to make a meaningful difference. Which is why starting early matters so much.

A business that has been through a structured value acceleration programme will typically achieve a higher multiple, attract more buyers, and sell faster than one that has not. The investment in preparation almost always pays for itself many times over.

Getting a Proper Valuation

If you have never had a formal valuation of your business, that is the right place to start. Not a rough estimate from your accountant, and not a number you have arrived at yourself — a structured assessment that looks at your normalised earnings, your risk profile, and the relevant market comparables.

At Ridgeline Advisory, the Diagnostic phase includes a valuation assessment as part of a broader review of your business's exit readiness. It gives you a realistic picture of where you stand — and a clear view of what needs to change to achieve the outcome you are planning for.

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Ridgeline Advisory provides business valuation and exit planning services for Canterbury and NZ business owners. Start with a Diagnostic to understand what your business is really worth.