How much does bookkeeping cost in New Zealand?

Let's get the short answer out of the way. In New Zealand, most small businesses pay somewhere between $150 and $700+ per month for outsourced bookkeeping. Sole traders with tidy, low-volume accounts sit near the bottom. Businesses with staff to pay, hundreds of transactions a month, and two-monthly GST sit nearer the top, or above it.

That's a frustratingly wide range, so the rest of this guide is about narrowing it down for your business. Because the real question isn't "what's the average?" It's "what should I expect to pay, and is it worth it?"

What you're actually paying for

Bookkeeping isn't one task, it's a bundle. The price reflects which parts of the bundle you need and how much of each. The big drivers are:

• Transaction volume. The single biggest factor. Reconciling 80 transactions a month is a different job from reconciling 600. More transactions, more time, higher fee.
• Payroll. Paying staff means PAYE, KiwiSaver and holiday pay, plus payday filing every run. Each employee adds a little, and the compliance risk is real.
• GST frequency. Filing two-monthly is more work over a year than six-monthly. If you're on monthly GST, that's more again.
• The state of your file. A clean Xero file is cheap to maintain. A neglected one needs a clean-up first, usually a one-off cost before the monthly fee settles.
• Reporting depth. A basic monthly profit-and-loss costs less than a tailored management report pack with commentary.

Hourly vs fixed monthly pricing

You'll come across two models. Hourly rates in New Zealand typically land between $45 and $90 an hour, depending on experience and whether you're hiring a solo bookkeeper or a firm. Hourly can look cheap on paper, but it's unpredictable, a messy month costs you more, and you're effectively penalised every time something's complicated.

Fixed monthly pricing has become the standard for a reason. You know exactly what you'll pay, it's easy to budget, and the incentive is flipped: your bookkeeper is rewarded for being efficient, not for taking longer. At Andersen, this is how we price, a flat monthly fee agreed up front, confirmed after we've actually looked at your file.

What it costs by business size

Rough guide only, your numbers will vary, but this is the shape of it:

Sole trader / contractor

Low transaction volume, no payroll, GST every six or two months. Often $150–$300 a month. The value here is less about hours saved and more about confidence: your GST is right, your deductions are captured, and year-end is painless.

Small business with a few staff

Higher transaction volume, payroll for two to ten people, two-monthly GST, monthly reporting. Commonly $300–$600 a month. This is the sweet spot where outsourcing clearly beats doing it yourself or hiring part-time.

Established / higher-volume business

Hundreds of transactions, larger payroll, tighter reporting needs, maybe inventory or multiple revenue streams. Often $600+ a month, and still cheaper than a full-time in-house hire once you factor in salary, KiwiSaver, software and management time.

The hidden cost of doing it yourself

"I'll just do it myself" is the most expensive bookkeeping plan there is, it just hides the cost. Here's where it leaks:

• Your time. Five hours a month on data entry is sixty hours a year. What's an hour of your attention worth back in the business?
• Errors you don't catch. A miscoded transaction or a wrong GST claim doesn't announce itself. It surfaces at year-end, or in an IRD letter.
• Missed deductions. If you're not sure what you can claim, you probably aren't claiming all of it. That's real money left on the table.
• A bigger accountant bill. Accountants charge to fix a messy file before they can do year-end. Clean books make that work faster and cheaper.

None of this shows up on an invoice, which is exactly why it's easy to ignore. But it's the difference between bookkeeping that "costs" you money and bookkeeping that quietly makes you money.

So, is it worth outsourcing?

Here's a simple test. Add up the hours you spend on your books each month and multiply by what your time is worth. Then add a fudge factor for the stress, the errors, and the year-end clean-up. If that number is bigger than a fixed monthly fee, and for most growing businesses it is, outsourcing isn't a cost. It's a swap: admin you dread for hours you'd rather spend elsewhere.

The bottom line

Bookkeeping in New Zealand isn't priced by a sticker; it's priced by your business. Volume, payroll and GST do most of the work in setting the number. Ask for fixed monthly pricing, make sure the quote is based on your actual numbers, and weigh it against the real, not the imagined, cost of doing it yourself. Do that, and you'll know a fair price when you see one.