How to Audit Your Business Costs (And Find the Money You're Leaking)

When was the last time you actually looked at every dollar leaving your business? Not your accountant's summary. Every recurring payment, every supplier, every subscription. If you had to pause before answering, you're not alone — and there's almost certainly money walking out the door that you haven't noticed yet.

A proper business cost audit isn't a once-a-decade exercise for multinationals. For NZ small and medium businesses, it's one of the fastest ways to improve cash flow without winning a single new client. Most owners who go through this process find between 8% and 15% of their operating costs are either unnecessary, overpriced, or could be significantly reduced with a phone call.

This guide walks you through a structured, practical process you can complete in roughly 90 minutes — no consultant required, no spreadsheet wizardry. Just a clear method for finding the money you didn't know you were losing.

"You don't need more revenue to improve your profitability. Sometimes you just need to stop spending money on things that stopped making sense."

Why Most Business Owners Never Do This

Before we get into the process, it's worth being honest about why this doesn't happen more often. There are three patterns that come up again and again when working with NZ business owners.

You're too busy. Running a business is relentless. Reviewing costs feels like a back-office task that can always wait until things calm down — except things rarely calm down.

You assume your accountant handles it. Your accountant categorises your expenses and prepares your financials. That's not the same as scrutinising whether each cost is competitively priced, whether you're still getting value, or whether you're paying for something that serves no current purpose. That forensic work is yours to own.

Supplier loyalty and inertia. You've been with the same freight company for six years, the same insurance broker since you started. There's comfort in that — but loyalty without review is expensive. Suppliers rarely volunteer their best pricing to long-term customers who never ask questions.

A procurement review for NZ small businesses is not about being disloyal or aggressive. It's about running your business with clear eyes. See also: why your business has stopped growing — cost bloat is one of the most common silent contributors.

The 90-Minute Business Cost Audit

Structure this as a single focused session. Block the time, close your email, and work through each category in turn. The goal is a complete picture of your outgoings, with each item flagged as: acceptable, worth reviewing, or cut immediately.

Preparation: Pull Three Months of Data

Start by exporting three months of transactions from Xero, MYOB, or directly from your business bank account. Three months is the right window — it's long enough to catch quarterly charges and irregular payments, short enough to stay manageable.

In Xero: go to Reports > Account Transactions and filter by date range. Export to CSV or work directly in the interface. In MYOB: use the Transaction Journal report with the same date filter.

Create a simple working list — a spreadsheet or even a printed page — with columns for: supplier name, monthly cost (or annualised), category, and your initial flag. You'll populate the flags as you work through each category below.

Category 1: Fixed Overheads

These are the costs that don't change month to month regardless of trading activity: rent, power, internet, phone lines, insurance premiums, and ACC levies.

• Rent: When did you last review your lease terms against current market rates? Commercial property conditions in many NZ regions have shifted. If you're within 12 months of a renewal, start the conversation now.
• Power and gas: Business energy in NZ is negotiable, particularly if your consumption is meaningful. Contact your current provider and two competitors for current commercial rates. Powershop, Mercury, and Genesis all have business offerings worth comparing.
• Internet and telecommunications: Business broadband and mobile plans are frequently on legacy pricing. Providers won't proactively move you to a better plan. Call and ask.
• ACC levies: Your ACC Work levy is based on your industry classification and your payroll. If your classification is wrong — and it often is for businesses that have evolved — you may be overpaying. Check your current levy rate against the ACC levy table for your industry code.
• Insurance: See the surprise list below. Insurance deserves its own review.

Category 2: Supplier Costs — Materials, Stock, and Freight

This is where the largest dollar amounts typically live for product-based businesses. The discipline here is straightforward: get three competing quotes for every significant supplier relationship.

Significant means anything that represents more than 2% of your annual revenue, or any supplier where you spend more than $10,000 NZD per year. This is the core of any meaningful supplier audit in NZ.

When you approach alternative suppliers, you're not necessarily planning to switch — you're establishing a market reference point. That reference point gives you the basis for a negotiation conversation with your existing supplier. Most will move on price if presented with a credible alternative. For a step-by-step approach to those conversations, see how to negotiate with suppliers.

Freight deserves particular attention. NZ freight costs have increased significantly since 2021. If you're sending small volumes frequently, you may be paying retail courier rates when a consolidated or account-based arrangement would be substantially cheaper. NZ Post Business, CourierPost account pricing, Aramex, and Mainfreight all offer volume-based structures that can reduce per-item costs by 20–40%.

Category 3: Software and Subscriptions

This is the category that produces the most consistent surprises. Subscription creep — the gradual accumulation of software tools that nobody actively decided to keep — is nearly universal in businesses that have been operating for more than three years.

Work through every recurring charge in your bank data and ask three questions about each one:

1. Who in the business uses this, and how often?
2. Does it duplicate something else we're paying for?
3. If we cancelled it tomorrow, what would break?

Common findings include: project management tools adopted during COVID that nobody uses anymore, design or marketing software on annual plans that one staff member signed up for, duplicate accounting add-ons, and trials that converted to paid subscriptions without a deliberate decision.

Also check user seat counts. Many SaaS tools charge per user. If you've had staff turnover, you may be paying for licences assigned to people who left months ago.

Category 4: Vehicle and Fleet Costs

If your business runs vehicles, review fuel card spending, WOF and service records, insurance per vehicle, and whether your fleet size still matches your current operational requirements. Businesses that have reduced headcount or changed their service model sometimes carry vehicle overhead that reflects a previous version of the business.

Also review whether vehicle financing terms are still competitive. Interest rates have moved considerably over recent years, and refinancing at a lower rate on remaining balances can materially reduce monthly outgoings.

Category 5: Professional Services

Accountant, lawyer, IT support, bookkeeper. These are high-trust relationships and most owners don't question them — but they should be reviewed periodically like any other supplier.

The question isn't whether your accountant is good. It's whether the scope and pricing of the engagement still reflects what you need. Businesses often outgrow their professional service arrangements in one direction or the other — paying for services they no longer need, or under-investing in areas that have become more complex.

Ask for a scope summary from your key professional advisers. What exactly are you paying for? Is that scope current? Are there services bundled into a retainer that you could consolidate or remove?

Category 6: Staff-Adjacent Costs

Training, recruitment fees, uniforms, tools and equipment, health and safety compliance. These costs are often scattered across multiple budget lines and rarely reviewed as a group.

Recruitment agency fees in particular deserve scrutiny. If you've used the same agency repeatedly without exploring alternatives — including direct hiring via LinkedIn Recruiter or Seek Talent Search — you may be paying a significant premium out of habit rather than necessity.

The Surprise List: NZ Cost Leaks That Owners Frequently Miss

Beyond the structured categories, there are several specific cost areas that come up again and again when auditing business expenses in NZ — and that owners consistently overlook.

Merchant and EFTPOS Fees

If your business takes card payments, you're paying merchant service fees on every transaction. These vary significantly by provider and by pricing structure, and most businesses signed up to whatever their bank offered when they started.

The NZ merchant fee landscape has three main players worth comparing: Windcave (formerly Payment Express, typically used for integrated EFTPOS), Paymark (the legacy NZ network, now part of Ingenico), and Stripe (online-focused, flat-rate pricing at 1.7% + 30c for NZ cards as of current pricing).

For businesses with significant card volumes, even a 0.3–0.5% reduction in effective merchant rate translates to real money. If you process $800,000 per year in card transactions, a 0.4% saving is $3,200 annually. Request a fee schedule review from your current provider and get at least one alternative quote.

Insurance Policies Not Reviewed in Three or More Years

The NZ insurance market has hardened considerably in recent years, with premiums increasing across most business lines. But many businesses are also holding policies that are no longer correctly sized — over-insured on some assets, under-insured on others, and paying for coverage that predates significant changes to the business.

A broker review (not just a renewal conversation with your existing broker) every two to three years is a minimum standard. Get a second opinion on your current coverage structure from an independent broker.

Unused Software Licences

This overlaps with the subscriptions category but deserves its own mention for businesses using enterprise-tier tools like Microsoft 365, Adobe Creative Cloud, or industry-specific platforms licensed per seat. Unused licences assigned to departed staff or to roles that no longer require the tool are pure waste. Pull your licence reports and reconcile against current headcount.

Freight and Courier Costs on Small Volume

Businesses that send parcels or freight infrequently often default to retail counter rates or consumer-tier online pricing. Creating a business account with CourierPost or NZ Post Business, or approaching a freight broker who aggregates volume across multiple small senders, can substantially reduce per-item costs without any change to shipping frequency or service level.

What to Do With Your Findings

By the end of your audit, you should have a flagged list sorted into three actions:

Negotiate

For suppliers and service providers where the relationship has value and switching would be disruptive — but where pricing is above market — negotiate. Use your reference quotes as leverage. Most suppliers will move rather than lose an established account. Be direct: "I've done a market review and I'm seeing better pricing elsewhere. I'd like to stay with you — can we have a conversation about our current rates?"

Switch

Where a supplier is uncompetitive and unwilling to negotiate, or where you've identified a materially better alternative, make the switch. Calculate the full cost of switching (time, transition risk, any exit fees) against the annual saving to confirm it's worthwhile. For most software and subscription switches, the payback period is under three months.

Eliminate

Subscriptions and services you no longer use, or that provide insufficient value relative to cost, should simply be cut. No negotiation required. Cancel and redirect that spend.

For the broader strategic picture of how to find cost savings in NZ across your entire business model — not just your supplier base — see our broader guide to reducing costs.

Make This a Habit, Not a One-Off

A cost audit done once is useful. Done annually, it becomes a structural advantage. Your competitors are likely not doing this with any rigour — which means every year you review and your costs stay lean is a year your margin holds while theirs erodes.

Block 90 minutes in your calendar for the same time next year. Set a recurring reminder to review your merchant fee pricing every 18 months. Put a note in your diary three months before each insurance renewal to request a second-opinion quote.

The Procurement and Outgoings lens is one of six areas we look at when working with NZ business owners at You Should. In almost every engagement, the cost audit uncovers savings that fund the transformation work itself. The money is usually already in the business — it just needs to be found.

If you'd like a facilitated review rather than a solo exercise, get in touch with Jessica to discuss what a structured procurement review looks like for your specific business.