How to Model the Offshore Staffing Business Case for a NZ Client
The 60-80% savings figure is gross. The net figure is 20-40%. Here is how to calculate it honestly for a specific client.
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NZ businesses that offshore back-office roles typically achieve net savings of 20-40% after accounting for management overhead, transition costs, and platform fees. Not the 60-80% gross figure often cited by providers.
The 60-80% figure is real. It reflects the salary differential between a NZ-based employee and an equivalent offshore role. A bookkeeper earning NZ$65,000 in Auckland compared to an offshore equivalent costing NZ$18,000-22,000 in salary produces a gross differential of 66-72%. That arithmetic is correct.
What the figure leaves out is everything else. Management overhead during the first 90 days. SOP documentation before the offshore team member can begin productive work. Productivity ramp-up over three to six months. Platform and tool costs. And the ongoing cost of supervising, reviewing, and managing an offshore team member week by week.
When those costs are included, the realistic net saving is 20-40%. At scale (five or more offshore roles), savings trend toward the upper end of that range because management overhead and SOP investment spread across more hires. At the entry level (one to two roles), the lower end is more realistic.
20-40% net is still a compelling number. On a NZ$85,000 total employment cost, that is NZ$17,000-34,000 per role per year. The difference between gross and net is not whether the savings exist. It is whether the business case survives scrutiny.
This post provides the methodology to build that business case. Every cost component, both sides, in NZD.
The NZ Employment Cost Components
The NZ side of the comparison uses cost components every accountant already calculates. Base salary is never the true cost of a NZ employee. The true cost includes statutory obligations and operational overhead that add 20-30% above the headline salary.
The full NZ employment cost for a back-office role includes:
Base salary (the headline figure)
KiwiSaver employer contribution: 3% of gross earnings (minimum employer obligation)
ACC levies: 1-2% depending on industry classification
Annual leave: 4 weeks (Holidays Act 2003)
Sick leave: 10 days per year (minimum statutory entitlement)
Public holidays: 12 days per year (including regional anniversary day)
Recruitment costs: advertising, screening, interviewing, onboarding (typically NZ$3,000-8,000 per hire for back-office roles)
Overhead: workspace, equipment, IT, management time allocation
For a NZ employee on a NZ$65,000 salary, the total employment cost typically reaches NZ$80,000-90,000 once all statutory obligations and overhead are included. For a NZ$55,000 salary, the total is approximately NZ$68,000-75,000.
This calculation is familiar. The same component-by-component discipline applies to the offshore side. The difference is that the offshore cost components are less familiar, and provider marketing rarely presents them in full.
NZ Salary Benchmarks by Role
The following table provides indicative NZD salary ranges for common back-office roles that NZ businesses offshore. Total employment cost includes the statutory obligations and overhead from the section above.
These figures reflect NZ market conditions as of early 2026. For a specific client, substitute their actual salary and overhead data. The value of benchmarks is as a starting point for conversations where client-specific data is not yet available.
NZ minimum wage is NZ$23.50 per hour (from April 2025), which sets the floor for any NZ-based comparison.
The Offshore Cost Components
The offshore side of the comparison requires the same component-by-component discipline. Offshore costs are not just the salary equivalent. The total offshore cost includes provider fees, platform costs, and the NZ-side management overhead that no provider builds into their headline pricing.
Offshore cost components:
Salary equivalent (NZD): the offshore team member's compensation, converted to NZD. This is the figure providers typically advertise.
Provider management fee: covers recruitment, HR, payroll, legal compliance, infrastructure, and employee management in the offshore location. Typically structured as a fixed monthly fee or a percentage above salary.
Platform and tool costs: software licences, communication tools, project management platforms. Some providers include these; others charge separately.
Hardware and equipment: laptop, monitors, peripherals. Usually a one-off setup cost, sometimes included in the provider fee.
Setup and onboarding costs: initial recruitment, training, workspace setup. Typically a one-off cost in the first month.
Indicative offshore total costs by role (NZD, including provider fees):
These ranges reflect Philippines-based providers, which represent the majority of the NZ offshore accounting market. Costs vary by provider, experience level, and engagement model (dedicated staff vs compliance outsourcing). India-based and Samoa-based providers operate at different cost points.
The gap between the salary equivalent column and the total cost column is where most of the gross-to-net reduction occurs. Provider fees, platform costs, and setup are real costs that belong in the business case.
The largest cost still missing from this table is management overhead. That requires its own section.
The Management Overhead That Provider Marketing Does Not Mention
Management overhead is the single largest factor that reduces gross savings to net savings. It is also the cost component least likely to appear in any provider's marketing materials.
First 90 days per offshore hire:
Expect 40-60 hours of NZ-based senior time in the first 90 days per offshore team member. This includes:
SOP documentation: 20-40 hours per engagement. Offshore team members need documented processes for every function they perform. If the processes exist only in a NZ team member's head, they must be written down before the offshore hire can begin productive work.
Training and onboarding: direct training on firm-specific systems, workflows, and client requirements
Quality review: reviewing offshore work product at a higher frequency during the ramp-up period
Communication management: establishing communication rhythms, addressing questions, managing expectations
Ongoing management overhead:
After the initial 90-day period, ongoing management overhead is typically 2-4 hours per week per offshore team member. This includes regular check-ins, quality review (at a lower frequency than the ramp-up period), and communication management.
Converting to NZD:
Management overhead is a real cost that should be included in the business case. To convert: multiply the hours by the effective hourly rate of the supervising partner or senior manager.
If the supervising partner's effective rate is NZ$150 per hour:
First 90 days: 50 hours x NZ$150 = NZ$7,500
Ongoing annual (at 3 hours/week x 48 weeks): 144 hours x NZ$150 = NZ$21,600
At NZ$150 per hour, ongoing management overhead alone is approximately NZ$21,600 per year per offshore team member. At a lower effective rate (NZ$100 per hour), it is approximately NZ$14,400.
This is the number that closes the gap between gross and net savings. It is real, it is quantifiable, and it should be in every business case presented to a client.
The management overhead reduces over time as the offshore team member becomes more autonomous and as the NZ supervisor develops efficient review and communication routines. By month 6-12, ongoing oversight for a well-performing offshore team member may drop to 1-2 hours per week. But the first-year figure should use the 2-4 hour range for conservative modelling.
When Savings Exceed the Transition Investment
The offshore staffing business case is not immediately positive. The first months are an investment period. Savings turn positive only after the transition costs have been absorbed and the offshore team member reaches productive steady state.
Typical timeline:
Months 1-3: Net negative. Transition costs (SOP documentation, setup, training) and high management overhead during ramp-up exceed the salary savings. The offshore team member is in productivity ramp-up and is not yet delivering at the level of an experienced NZ-based employee.
Months 4-6: Break-even zone. Productivity ramp-up reaches 70-90% of steady state. Management overhead begins to reduce. Cumulative savings approach cumulative investment.
Months 7-12: Net positive. The offshore team member is at or near steady state productivity. Management overhead has reduced to the ongoing level (2-4 hours per week). Monthly net savings are positive and accumulating.
Setting client expectations: the first quarter is an investment period. This is a fact that belongs in the business case presentation, not a detail to be discovered after the engagement begins.
Attrition risk: Philippine BPO arrangements run at 30-45% annual attrition (CCAP/Willis Towers Watson data for the contact centre sector). Dedicated staff arrangements, where a single worker is assigned exclusively to one client and builds institutional knowledge within that relationship, have materially lower attrition. The underlying risk remains real for any offshore engagement: if the offshore team member leaves, the ramp-up period resets. A conservative business case notes a replacement cycle as a possible contingency in the first 24 months, with the associated re-recruitment, re-training, and ramp-up costs estimated against the specific engagement.
At scale (5+ offshore roles), attrition is partially absorbed because knowledge transfer within the offshore team reduces individual replacement impact. At the entry level (1-2 roles), a departure has a larger proportional effect.
Worked Example: Bookkeeper Role
The following example brings all the preceding components together for a single role. This is the kind of calculation an accountant can present to a client.
Scenario: A NZ professional services firm employs a bookkeeper at NZ$65,000 per year. The firm is considering an offshore bookkeeper through a Philippines-based provider.
NZ Total Employment Cost:
Offshore Total Cost (Year 1):
Year 1 Net Saving: NZ$83,725 minus NZ$64,500 = approximately NZ$19,225 (23% net saving)
Year 2 Onwards (no setup costs; reduced management overhead):
Year 2+ Net Saving: NZ$83,725 minus NZ$46,800 = approximately NZ$36,925 (44% net saving)
Notes on this example:
The Year 1 saving (23%) reflects the full transition investment, including elevated management overhead and one-off setup costs. Year 2 onwards (44%) reflects steady-state operations where the offshore team member is fully productive and management overhead has normalised.
These figures are illustrative. For a specific client:
Substitute the actual NZ salary and overhead from the client's financial records for the NZ side
Request provider quotes for the offshore salary, management fee, and setup costs
Adjust the management overhead hours based on the supervising partner's assessment of the client's management capacity and the complexity of the functions being offshored
The business case is strongest when both sides of the comparison use the client's own data rather than benchmarks.
What This Financial Model Excludes
A business case built on TCO comparison addresses one dimension of the offshore staffing advisory conversation: the financial case. Two other dimensions are equally important and are covered separately.
Employment classification risk: The Employment Relations Amendment Act 2026 introduced the specified contractor gateway, a statutory safe harbour that, if all five criteria are met, bars employment reclassification challenges. How this applies to offshore arrangements, and how it contrasts with Australia's post-Pascua trajectory, is covered in [The Employment Relations Amendment Act 2026: What NZ Accountants Need to Know].
Privacy compliance: When a NZ firm shares client data with offshore staff, the arrangement engages the Privacy Act 2020 under IPP 12 and the s11 agent exception. The compliance pathway, including OPC model contract clauses and breach notification obligations, is covered in [Privacy Act IPP 12 and Offshore Staffing: A Practical NZ Compliance Guide].
The financial case is necessary but not sufficient. A complete advisory conversation covers all three dimensions: the numbers, the employment law framework, and the privacy compliance pathway.
The Complete Advisory Framework
This post provides the financial modelling methodology. For the complete framework for advising NZ clients on offshore staffing, including sector suitability, decision criteria, regulatory compliance, cultural navigation, and conversation methodology, see [The New Zealand Accountant's Guide to Advising on Offshore Solutions].
The NZ Advisory Toolkit provides ready-made templates for applying this framework, including evaluation scorecards, engagement letter templates, and risk assessment checklists.
Download the NZ Advisory Toolkit
Ready-made templates for evaluation, engagement letters, and risk assessment.
[The New Zealand Accountant's Guide to Advising on Offshore Solutions] (in-text contextual link)
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