Delivery footprint
Outsourcing payroll means someone else's staff are keying, checking and lodging your pay run. Where those staff sit – and how much of the AU/NZ picture they cover – is the first thing to establish.
- Proprietary multi-tenant cloud SaaS (Affinity Payroll Engine)
- 100% onshore: Melbourne, Sydney, Auckland, Whangārei
- Native AU & NZ processing on a unified database
- Proprietary enterprise & mid-market SaaS (ADP Payforce, ADP Lyric HCM, ADP Payline)
- Hybrid: onshore account leads (AU capital cities) with offshore processing centres (Manila, Pune/Chennai)
- Comprehensive AU & NZ localisations
Why this matters: a hybrid onshore/offshore footprint like ADP's is a genuinely common and cost-efficient way to deliver managed payroll at scale, and it does not by itself mean poorer outcomes. But it does mean the account lead you speak to and the processing team keying your pay run may not be the same people – and coordination, timezone and hand-off overhead between the two can shape how quickly a correction actually lands in an employee's account. An onshore-only model like Affinity's removes that hand-off entirely.
Calculation depth
Both providers bring genuine engineering investment to award and EBA interpretation. ADP's Payforce and Lyric HCM rules engines are configurable and built to handle complex enterprise awards and shift systems, and ADP describes its NZ module as mature, with statutory leave averages and Holidays Act formulas built in. Affinity's engine was purpose-built for AU/NZ complexity specifically – intricate shift penalties, multi-tier EBAs, and allowance stacking – paired with a native NZ engine that tracks continuous gross earnings, ordinary weekly pay (OWP), average daily pay (ADP), and leave liabilities.
On statutory lodgements, ADP provides full handling of STP Phase 2, SuperStream clearing, state payroll taxes, and IRD filings – broad coverage in line with a global HCM platform. Affinity lodges STP Phase 2 and PAYG/SuperStream directly, is Pay Day Super ready, and files NZ IRD Payday returns natively from the same platform used for AU processing.
The practical difference for a complex trans-Tasman workforce is less about whether either engine can technically handle your awards, and more about how much of ADP's product investment is concentrated on AU/NZ specifically versus spread across a global HCM suite. If your organisation's complexity sits heavily in NZ Holidays Act interpretation or a dense multi-award AU environment, confirm ADP's current depth against your actual pay conditions rather than assuming parity.
Audit, QA & who owns support
ADP runs automated pre-payroll checks, gross-to-net variance reports, and scheduled client audit gates – a solid, structured QA layer. Affinity pairs pre-payslip automated checking (Payroll IQ) with dedicated local payroll manager variance audits, so anomalies are flagged before a payslip is issued, not after.
The more consequential difference is who your employees actually talk to when something is wrong on their payslip. ADP runs a tiered support model: under its standard "Managed" service, your own HR team fields employee queries; ADP only takes direct ownership of Tier-1 employee support under its "Advanced Service" tier. Escalation beyond that runs through a centralised client service desk, relationship manager, and ticketing system.
Affinity takes direct ownership of Tier-1 employee queries as standard, handled by a local AU/NZ team, with a named local Payroll Manager as the primary operational escalation point – not a service tier you need to buy into. If reducing the load on your internal HR team from payslip queries is a core reason you're outsourcing, this is the single most important line item to clarify with ADP before you compare pricing.
Banking & who carries the liability
ADP operates a provider-managed disbursal model, managing third-party trust disbursals, direct banking runs, and employee distributions on the client's behalf. Affinity operates a comparable provider-managed model, executing net pay, ATO, IRD and super fund payments directly or via ABA files.
Regardless of which banking or disbursal model a provider uses – client-executed ABA files, or a provider-managed trust disbursal – statutory payroll compliance liability under the Fair Work Act 2009 (Australia) and New Zealand employment law is non-delegable to a third party. The employer remains accountable for correct payment of wages, superannuation and statutory deductions, even when a provider physically moves the money. The disbursal model changes who executes the payment; it does not change who is legally on the hook if it is wrong.
Retained resourcing & implementation
| Metric | Affinity | ADP |
|---|---|---|
| Retained client FTE | 0.15 – 0.3 FTE per 1,000 employees | 0.3 – 0.6 FTE (Managed) / 0.15 – 0.3 FTE (Advanced) per 1,000 employees |
| Implementation velocity | 8 to 16 weeks (full parallel run testing) | 12 to 24 weeks, depending on scale and platform selection |
| Ideal profile | 100 to 10,000+ employees; complex Modern Awards, EBAs, and trans-Tasman workforces | 200 to 10,000+ employees; regional APAC and multinational enterprises |
ADP's retained-FTE figure roughly halves once you step up from its standard Managed tier (0.3–0.6 FTE per 1,000 employees) to its Advanced Service tier (0.15–0.3 FTE per 1,000) – the same tier that brings direct Tier-1 employee support. Affinity's fully managed model sits at 0.15–0.3 FTE per 1,000 employees as the standard offering, with implementation typically faster at 8–16 weeks against ADP's 12–24 weeks.
Where ADP excels
Configurable enterprise rules engines
Payforce and Lyric HCM are built to handle complex enterprise awards and shift systems at scale, backed by comprehensive AU & NZ localisations.
A genuine service-tier upgrade path
Organisations that want a lighter operating model can step up from Managed to Advanced Service and shift both Tier-1 support ownership and retained FTE load onto ADP.
Scale and global infrastructure
As one of the world's largest payroll providers, ADP brings deep investment in platform security, uptime and continuity that a smaller specialist cannot match on raw scale.
Centralised escalation tooling
A centralised client service desk, relationship manager, and ticketing system gives large, multi-site clients a structured escalation path.
Where Affinity excels
100% onshore delivery
Every stage of processing runs from Melbourne, Sydney, Auckland and Whangārei – no offshore processing hand-off, no timezone gap between account lead and processor.
Direct Tier-1 employee ownership, as standard
Affinity's local AU/NZ team takes employee payslip queries directly with no service-tier upgrade required, backed by a named local Payroll Manager as escalation point.
Lower retained FTE without a premium tier
0.15–0.3 FTE per 1,000 employees is Affinity's standard fully managed offering – the level ADP only reaches once a client buys its Advanced Service tier.
Native trans-Tasman depth
A single engine tracks NZ continuous gross earnings, OWP, ADP and leave liabilities alongside AU award and EBA interpretation, purpose-built for AU/NZ rather than adapted from a global platform.
Faster implementation
8–16 weeks with full parallel run testing, against ADP's 12–24 week range for managed payroll onboarding.
Who's each provider best for?
- Want to fully remove employee payslip queries from your HR team's plate, not just under a premium tier
- Run 100–10,000+ employees across complex Modern Awards, EBAs, or a trans-Tasman footprint
- Want processing done onshore end to end, with no offshore hand-off
- Need a faster implementation window (8–16 weeks)
- Are a large multinational enterprise (200–10,000+ employees) needing a consolidated regional/global provider
- Are comfortable with hybrid onshore/offshore delivery in exchange for global scale
- Are willing to pay for the Advanced Service tier to get direct Tier-1 employee support
- Value a large, publicly listed vendor with a centralised global service desk
- Run global HCM through ADP but want a specialist outsourced provider for a complex AU/NZ operation specifically
- Are currently on ADP's standard Managed tier and want to benchmark the Tier-1 support and retained-FTE trade-off against an onshore specialist before upgrading tiers