In-House vs Outsourced Bookkeeper in Sydney: Cost Compared

Updated: November 2026

To have this handled on a fixed monthly fee, see bookkeeping for a fixed monthly fee.

Choosing between an in-house vs outsourced bookkeeper in Sydney usually comes down to hours. If you have close to a full-time workload of real bookkeeping, hiring can make sense. If you have less than that, and most small and mid-sized businesses do, outsourcing is usually cheaper and less risky, because you pay for the work rather than for a full role plus everything that comes with employing someone. This guide shows how to work out the true cost of each so you can compare like with like.

What does an in-house bookkeeper really cost?

Salary is only the starting point. To compare fairly, add up the full cost of employment:

Salary. Check current advertised salaries for bookkeepers in Sydney on job boards for the experience level you need.
Super guarantee. 12% of qualifying earnings from 1 July 2026, paid so it reaches the fund within 7 business days after each payday.
Leave. Annual leave, personal leave and public holidays mean you pay for weeks when no bookkeeping is done, unless someone covers.
Workers compensation insurance, which is compulsory for most NSW employers.
Payroll tax, if your total Australian wages are above the NSW threshold. Check Revenue NSW for the current threshold and rate.
Software and equipment. Extra Xero user, receipt capture, a laptop and a desk.
Recruitment and turnover. Advertising or agency fees, onboarding time, and the cost of re-hiring if they leave.
Your management time. Someone has to supervise, review and answer questions.

Add those up for your situation and divide by the number of hours of real bookkeeping work you have. That number is your true hourly cost of in-house bookkeeping.

What does an outsourced bookkeeper cost?

An outsourced bookkeeper charges for the work, either hourly or as a fixed monthly fee. Leave, super, equipment and training are their problem, not yours. For reference, our published fixed packs are BAS Slayer from $900 a month plus GST, Payroll Party from $1,500 a month plus GST, and The Lot from $2,200 a month plus GST, each with a published range by volume or headcount. Our Sydney bookkeeper cost guide explains what drives pricing across the market.

How many hours of bookkeeping do you actually have?

This is the question that decides it. Estimate realistically:

Bank reconciliation and coding: how many transactions a week?
Bills and payment runs: how many supplier bills a month?
Invoicing and debtor follow-up: how many invoices, and how many paid late?
Payroll: how many employees, and weekly, fortnightly or monthly?
BAS, IAS and STP finalisation.
Month-end reporting.

Many businesses find the total is well under a full-time week once the work is done efficiently with bank feeds, rules and receipt capture.

When does in-house win?

In-house is the right answer in some situations:

You really have a full-time workload of transactional work, for example high-volume retail or several hospitality venues with daily reconciliations.
You need someone physically on site, such as handling cash, stock counts or paper documents.
You are building a finance team and the bookkeeper is the first hire under a financial controller.

When does outsourcing win?

Your workload is part time.
You want BAS lodged by a registered BAS agent without employing one.
You want cover during leave and no key-person risk.
You want a predictable monthly cost.

Is there a middle option?

Yes. Many businesses keep an in-house administrator for invoicing, receipts and supplier queries, and outsource reconciliation, payroll, BAS and reporting. That splits the work by skill level, and the outsourced bookkeeper acts as a check on the internal process.

What is the simple test?

Work out your true in-house cost per year and your outsourced cost per year for the same scope. If outsourced is lower and the scope is covered, outsource. If in-house is lower only because you have left out leave, super, payroll tax or your own time, go back and add them in.

What do most comparisons miss?

Key-person risk. When a sole in-house bookkeeper is sick, on leave or resigns, payroll and BAS still fall due. Under Payday Super, super for every pay run has a 7 business day deadline, so a two-week absence can now mean missed super deadlines. Outsourced firms cover that with a team.

How do you run the comparison step by step?

Use your own figures in this order:

Write down the scope: reconciliation, bills, invoicing, payroll, BAS and reporting, with volumes.
Estimate the hours that scope actually needs each week with modern tools.
Get current salary information for that level of role from Sydney job ads.
Add 12% super, leave cover, workers compensation, any payroll tax, software, equipment and recruitment.
Estimate your own supervision time and put a value on it.
Get two or three fixed quotes for the same scope from outsourced providers.
Compare the annual totals and the risks, such as leave cover and BAS registration.

Doing it this way stops the comparison being salary against a monthly fee, which almost always understates the in-house cost. It also shows whether the scope you are paying for is the scope you actually need.

What questions should you ask an outsourced provider?

Are you, or is the person lodging my BAS, a registered BAS or tax agent?
Who will actually do the work, and who covers when they are on leave?
How quickly do you reply to questions, and are questions included in the fee?
What volume assumptions is the price based on, and when is it reviewed?
Will my business own the Xero subscription?

Clear answers to these questions matter more than a small difference in price.

If you are leaning towards hiring, it is still worth getting an outsourced quote first. It gives you a benchmark for the role, and many businesses use an outsourced bookkeeper to keep things running while they recruit, so the books stay current during the hiring process.

Related reading: payroll and super for Sydney teams.

FAQ

At what size should a business hire an in-house bookkeeper?

It depends on hours, not revenue. When you have close to a full-time workload of real bookkeeping, or need someone on site, hiring starts to make sense.

Does an outsourced bookkeeper lodge my BAS?

A registered BAS agent can prepare and lodge BAS for you. Check registration on the Tax Practitioners Board public register.

Can I outsource only part of my bookkeeping?

Yes. A common split is internal admin for invoicing and receipts, with reconciliation, payroll, BAS and reporting outsourced.

What happens to super if my in-house bookkeeper is away?

Super must still reach funds within 7 business days after each payday under Payday Super, so plan cover for leave.

Want a straight comparison for your business?

Tell us your transaction volume and headcount and we will give you a fixed quote you can put next to the cost of hiring.

Next step: send us a message and a real person replies within a few working hours, or book a free Xero Roast, a 15-minute plain-English review of your file with a fixed quote at the end. Our fixed monthly packs include a 4-hour reply guarantee, no lock-in and a 30-day money-back guarantee.

About Sydney Bookkeeper

Sydney Bookkeeper is the modern, fixed-price Sydney bookkeeper for businesses with staff that are tired of slow, hourly, jargon-spouting incumbents. We work with professional services firms, construction and property businesses, agencies, tech and ecommerce companies, hospitality groups, and health practices across Sydney. Monthly bookkeeping, BAS lodgement, payroll, and Xero file cleanups, all on fixed monthly pricing, no lock-in.

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The team uses a registered BAS Agent for all BAS and IAS lodgement services. Full registration details, agent particulars, and copies of the Tax Practitioners Board (TPB) Code of Professional Conduct, the TPB complaints process, and any conditions on the agent's registration are available on request by emailing hello@sydneybookkeeper.com. This content is general information only, written for Australian small and mid-market businesses. It does not constitute tax, financial product, or legal advice and should not be relied on as such. Tax obligations depend on your individual circumstances. For advice specific to your business, contact the team directly or consult a registered tax agent or licensed financial adviser. Sydney Bookkeeper is not a licensed tax agent or licensed financial adviser. Information was current at the time of publication and may change without notice. We review and update guides periodically.

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