Employer Payroll Cost Calculator Australia (2026–27)
Calculate total business payroll expenses across all employees under current Australian state and federal rules. Model total gross wages, 11.5% Super Guarantee, state payroll tax thresholds, workers compensation, and STP Phase 2 compliance.
1. Total Headcount & Average Wages
$773,840 / yr
Total annual payroll outlay for 8 staff members.
Payroll Cost Breakdown
Gross Base Payroll: $680,000
Superannuation (12%): $81,600
State Payroll Tax: $0
WorkCover Insurance: $12,240
1. The Australian Employer Payroll Cost Framework (2026–27)
Total employer payroll expenses in Australia are regulated by state revenue legislation (Payroll Tax Acts) and federal superannuation law.
Managing company-wide payroll requires tracking gross employee wages, compulsory 11.5% Super Guarantee contributions, state payroll tax threshold exemptions, and industry WorkSafe premiums.
2. Total Wages Level & Employer Payroll Outlay Benchmarks
| Total Gross Wages | Super (11.5%) | State Payroll Tax | Workers Comp | Total Employer Outlay |
|---|---|---|---|---|
| $500,000 Payroll (5 Staff) | $57,500 Super (11.5%) | $0 (Under Threshold) | $10,000 Ins (2.0%) | $567,500 Outlay (+13.5%) |
| $1,500,000 Payroll (15 Staff) | $172,500 Super (11.5%) | $16,350 Tax (NSW 5.45%) | $30,000 Ins (2.0%) | $1,718,850 Outlay (+14.6%) |
| $3,000,000 Payroll (30 Staff) | $345,000 Super (11.5%) | $98,100 Tax (NSW 5.45%) | $60,000 Ins (2.0%) | $3,503,100 Outlay (+16.8%) |
| $5,000,000 Payroll (50 Staff) | $575,000 Super (11.5%) | $207,100 Tax (NSW 5.45%) | $100,000 Ins (2.0%) | $5,882,100 Outlay (+17.6%) |
3. The Mathematics of Company Payroll Taxes & Super
Total Employer Payroll Outlay (Outlay_payroll) for total gross wages (W_gross), Super Guarantee (11.5%), state threshold (T_state), state rate (r_prt %), and workers comp (r_wc %) is:
Example Calculation ($1,500,000 Total Gross Wages in NSW):
- Total 11.5% Super Guarantee: $172,500.00.
- Taxable Wages Base ($1,500,000 + $172,500 = $1,672,500) vs $1.2M Threshold: $472,500 taxable excess.
- NSW State Payroll Tax (5.45% × $472,500): $25,751.00 tax due.
- Total Employer Outlay = $1,500,000 + $172,500 + $25,751 + $30,000 (WorkSafe) = $1,728,251.00 / year.
4. Step-by-Step Guide to Managing Employer Payroll Costs
Aggregate Total Gross Wages Across All Employees
Sum total gross salaries, wages, casual loadings, overtime, and bonuses.
Calculate Total 11.5% Super Guarantee Liability
Apply 11.5% Super Guarantee rate across total Ordinary Time Earnings (OTE).
Determine State Payroll Tax Exemption Threshold & Rate
Check state payroll tax threshold and apply state rate to excess taxable wages + super.
Apply State Industry Workers Compensation Premium Rate
Multiply total gross payroll by industry-specific WorkSafe risk premium percentage.
Calculate Total Employer Payroll Outlay & Monthly Cash Reserve
Sum gross wages, super, payroll tax, and workers comp to establish total monthly payroll outflow.
5. Employer Payroll Mistakes & Checklist
Failing to Register for State Payroll Tax When Crossing Thresholds
Crossing the state threshold ($1.2M in NSW) without registering, triggering retrospective payroll tax assessments plus interest and penalties.
Omitting Superannuation and Contractor Wages from Payroll Tax Calculations
Excluding 11.5% super contributions or labor-only contractor payments from total taxable wages when calculating payroll tax liability.
Underdeclaring Total Wages to Workers Compensation Insurers
Underestimating annual wages on WorkSafe declarations, leading to large back-premiums during annual insurance audits.
Failing to Separate FBT-Exempt Benefits from Taxable Fringe Benefits
Providing non-exempt fringe benefits without tracking FBT, incurring 47% Fringe Benefits Tax penalties on 31 March.
Employer Payroll Compliance Checklist
Single Touch Payroll (STP Phase 2) Reporting Audit
Ensure payroll software reports exact wage breakdowns to the ATO on every pay cycle.
State Revenue Office Payroll Tax Registration
Register with State Revenue Office (e.g. Revenue NSW) once total Australian payroll nears threshold.
Annual WorkSafe Actual Wages Declaration
Complete annual WorkSafe actual wages declaration to reconcile workers comp premiums.
Quarterly Superannuation Clearing House Reconciliation
Reconcile clearing house super payments to ensure zero unpaid super liability.
6. Annual Employer Payroll Lifecycle Timeline
STP Phase 2 Pay Run Submission & PAYG Holdback
Transmit STP data to ATO; hold back PAYG withholding and 11.5% super in tax bank account.
State Payroll Tax Returns & Payment
Lodge monthly payroll tax return with State Revenue Office if registered for payroll tax.
Super Guarantee Remittance & BAS Lodgment
Remit 11.5% super contributions via clearing house; lodge quarterly Business Activity Statement.
FBT Year-End & WorkSafe Annual Reconciliation
Lodge FBT return (31 March); submit annual WorkSafe actual wages declaration (30 June).
Disclaimer: This Employer Payroll Cost calculator and guide are provided for general educational and informational planning purposes only. Total gross wages, 11.5% Super Guarantee liabilities, state payroll tax thresholds, and workers compensation premiums reflect 2026–27 State Revenue Office and ATO rules. This page does not constitute formal tax or accounting advice.
Charlotte Smith
Senior Personal Finance & Taxation Specialist at AussieSpot
Charlotte Smith is the lead personal finance advisor and workplace specialist at AussieSpot. Charlotte has over 12 years of experience helping Australian households build budgets, plan savings goals, and manage living costs.
Frequently Asked Questions (FAQ)
What State Payroll Tax thresholds apply across Australian states in 2026–27?
Payroll tax thresholds vary by state: NSW ($1.2M at 5.45%), Victoria ($900k at 4.85%), Queensland ($1.3M at 4.75%), WA ($1.0M at 5.5%), SA ($1.5M at 4.95%), and ACT ($2.0M at 6.85%). Total payroll includes wages, superannuation, bonuses, and director fees.
Is Superannuation included when calculating State Payroll Tax liabilities?
YES! All compulsory Super Guarantee (11.5%) and salary sacrifice super contributions are included in the definition of "taxable wages" when determining whether your business exceeds state payroll tax thresholds.
How are Workers Compensation insurance premiums calculated on total payroll?
State WorkSafe authorities (icare NSW, WorkSafe VIC, WorkCover QLD) multiply your total gross wages by an industry risk rating factor (ranging from 0.8% for office workers to 6.5%+ for high-risk construction trades).
What is Single Touch Payroll (STP Phase 2) reporting?
STP Phase 2 requires employers to report detailed payroll data (gross pay, PAYG withholding, super, leave types) directly to the ATO on or before every pay day using STP-compliant payroll software (Xero, MYOB, Employment Hero).
How does Fringe Benefits Tax (FBT) impact total employer payroll costs?
FBT (47%) is levied on non-salary benefits provided to employees (e.g. company cars, gym memberships, entertainment). Providing non-exempt fringe benefits significantly increases total employer payroll expenses.