In-House vs Outsourced Payroll

Why the comparison is worth making carefully

Payroll looks straightforward from the outside. Wages go in, net pay comes out. In practice, the gap between what payroll looks like and what it actually involves is where most employers run into problems.

Managing payroll in-house is a legitimate choice — it gives you control and keeps everything internal. But it also means keeping pace with changing contribution rates, filing deadlines, leave entitlements, and the particular rules that apply to your jurisdiction and employment arrangements. For some businesses, that's manageable. For others, it's a growing weight on staff who have other responsibilities.

Outsourcing payroll to a specialist service shifts that weight — and with it, the ongoing obligation to stay current. The comparison below looks at both approaches honestly, across the dimensions that matter most to employers making this decision.

Side by side

A direct comparison across the areas that tend to matter most when employers weigh up their options.

Area	In-House Payroll	With Quantity Payroll
Processing accuracy	Depends on staff knowledge and time available for checks	Dedicated review at each step before payslips are issued
Compliance updates	Owner or HR team responsible for tracking legislative changes	Changes tracked and applied as part of the service
Staff time required	Several hours per cycle, more during year-end periods	Minimal — you share data, we handle the rest
Software & tools	Subscription cost plus training time for each new hire	Included — no separate software purchase needed
Year-end filings	Additional workload, often requiring external help	Covered under the Payroll & Compliance Support plan
Scalability	Grows harder as headcount increases without extra resources	Same process regardless of team size
Staff cover	Payroll at risk if the person who handles it is unavailable	No dependency on any single individual

What makes the Quantity Payroll approach different

Not all payroll services work the same way. These are the elements that shape how we do things.

Cycle-based structure

Payroll is organised around your actual pay schedule, not a generic workflow. The structure follows the rhythm of how your business runs.

Verification before every run

Each cycle goes through a check before payslips are issued. Errors are caught at the source, not discovered after pay day.

Records kept per run

A complete record of each pay cycle is maintained and available. If you need to review a past run, the information is there.

Fixed per-employee pricing

You know the cost before the cycle starts. There are no variable charges that appear after the fact.

Explanations included

When obligations or regulations arise, we explain them clearly. You're not left to interpret compliance language on your own.

No key-person dependency

Payroll doesn't pause when a team member is ill or on leave. The process continues on schedule, regardless.

Where errors tend to occur — and why

Payroll errors are more common in in-house setups than most employers expect. Understanding where they come from helps explain why a structured process makes a difference.

Common sources of in-house payroll errors

Manual data entry mistakes, particularly when handling multiple employee types or pay structures
Missed updates to tax thresholds or contribution rates that change mid-year
Inconsistencies introduced when covering for the person who normally handles payroll
Incorrect leave calculations, especially when accrual rules vary across staff
Late or incomplete filings during busy periods when payroll competes with other priorities

How a structured process addresses these

Data verified before each run reduces the risk of unchecked entry errors carrying through to payslips
Regulatory changes tracked and applied as part of the ongoing service, not as a separate task
The same process applies regardless of who is available — no institutional knowledge living in one person
Leave and entitlement calculations handled consistently within the agreed setup from the start
Filing obligations handled on schedule, without competing with other business priorities for attention

The real cost picture

The comparison between in-house and outsourced payroll costs is often narrower than employers expect once the full picture is counted.

What in-house payroll typically costs

Staff time per pay cycle (estimated hours × hourly rate) Variable

Payroll software subscription Annual fee

Training for new staff who take on payroll Periodic

External accountant for year-end filings Annual

Correction costs when errors require amendment Occasional

What Quantity Payroll costs

Core Payroll Run $6 / employee / month

Payroll & Compliance Support $9 / employee / month

Setup & Handover (one-time) $450

Software / tools Included

Amendment costs for errors Not applicable

For a team of 15 employees, the Core Payroll Run works out to $90/month. Many employers find that this is less than the combined cost of staff time and software once those are tallied properly — and it doesn't include the cost of errors or the value of time freed up for other priorities.

What the experience looks like

The day-to-day difference between managing payroll yourself and working with Quantity Payroll is often felt most clearly in the weeks before and after each pay run.

A Managing payroll in-house

Each cycle begins with gathering timesheets, calculating changes, and entering data into your software. Any staff changes from the previous period need to be reflected. Once processed, payslips go out — and if something was entered incorrectly, it may only surface when an employee raises it.

Year-end brings an additional block of work: summary documents, filings, and reconciliations that sit alongside everything else your team is managing. For growing businesses, the load increases with each new hire.

If the person who handles payroll leaves or is unavailable, the knowledge and process can be difficult to hand across quickly.

B Working with Quantity Payroll

Before each cycle, you share the relevant data — hours, any changes, new starters, leavers. We confirm what we've received and proceed once everything is verified. You get payslips back, along with a clear record of the run.

For clients on the Payroll & Compliance Support plan, filings and year-end documentation are handled as part of the service. Obligations are explained when they arise, not handed to you as a problem to solve.

The process doesn't depend on any single person at your end. If someone is away, payroll continues on schedule.

How results compare over time

The difference between the two approaches becomes more visible over a longer period. In-house payroll often works well when a business is small and the person doing it has time and attention to spare. As the team grows, or as the person moves on, the fragility in that arrangement starts to show.

YEAR 1

Setup and rhythm

With a properly structured setup, the first year establishes a consistent process. Pay runs follow the same order every cycle, and records are accumulated from the start.

YEAR 2–3

Compound reliability

The payroll history becomes a resource. Reviewing a past cycle, answering employee queries about previous pay — everything is on file. The process matures without additional effort from your team.

ONGOING

Scales without friction

As your team grows, the cost per employee remains the same. The process doesn't become harder — it just covers more people using the same structure.

A few things worth clarifying

Some common assumptions about outsourced payroll that don't always hold up when examined.

"Outsourcing payroll means losing visibility over what's happening."

In practice, a well-structured payroll service provides more documentation and consistency than most in-house arrangements. You receive a record of each run, payslips for each employee, and an explanation of any changes that affect the figures. The information is there — it's just produced by someone who specialises in producing it accurately.

"It only makes sense for large companies."

Per-employee pricing makes outsourced payroll proportionate to team size. A business with five employees pays for five employees. The benefits — accuracy, compliance tracking, consistent records — apply regardless of headcount. In some ways, small businesses benefit more, because they're least likely to have a dedicated payroll specialist on staff.

"Switching from in-house payroll is complicated and risky."

The Setup & Handover service exists specifically to handle this transition carefully. It includes data migration, verification of opening balances, and a walkthrough so your team understands the new process. A well-managed handover reduces risk — it doesn't introduce it.

"Our payroll is straightforward enough to handle internally."

It may well be. For teams with very simple, static pay structures and someone who has time to give it proper attention, in-house can work well. The question is whether that remains true as circumstances change — when staff turn over, when pay arrangements become more varied, or when filing obligations increase. A consistent external process isn't about complexity; it's about reliability.

Why employers choose to work with Quantity Payroll

The decision usually comes down to a few consistent factors.

01

Reliable on every cycle

Pay runs happen on schedule, every time. There's no period where payroll slips because someone is busy or unavailable.

02

Transparent costs from the start

Fixed per-employee pricing means you can forecast the cost of payroll accurately, without surprises at the end of the month.

03

Staff time spent elsewhere

Hours returned to your team are hours they can spend on the parts of your business that need their expertise most.

04

Compliance handled quietly

Regulatory changes are tracked and applied as part of the service. You're informed when something is relevant, not left to find out yourself.

See what the right fit looks like for your team

If you're weighing up the options, getting a clear picture of what working together would actually involve is a reasonable starting point. No commitment needed — just a conversation.

Get in Touch

Two ways to run payroll. One is easier to get right.