When is STP finalisation due for the 2026 financial year?

Single Touch Payroll (STP) Phase 2 finalisation declarations are due by 14 July 2026 for employers with 20 or more employees, and 31 July for closely held payees. Lodging late delays your employees' tax returns.

When does super need to be paid for the June quarter?

Super Guarantee contributions for the April–June quarter must be received by the employee's super fund by 28 July. Late super is not tax-deductible and triggers the SG Charge — so for EOFY purposes most contractors pay by mid-July to leave a clearing-house buffer.

Do timesheets need to be closed before 30 June?

Yes. Every shift worked on or before 30 June should be approved and locked so the hours flow into the correct financial year for STP, job costing, WIP and award interpretation. Anything left open distorts margin reporting and creates payroll re-runs in July.

Can mining contractors still use the instant asset write-off in FY26?

Thresholds change year to year — check the current ATO small-business instant asset write-off limit before 30 June and confirm any plant, tooling or vehicles you want to claim are installed and ready for use by that date, not just invoiced.

What's the biggest EOFY mistake mining contractors make?

Leaving retentions, variations and unbilled work off the June invoice run. That revenue gets pushed into FY27, distorts your job margins, and starves cash flow during the July super and BAS payment window.

When is the company tax return due?

Self-lodgers must lodge by 31 October. Contractors lodging through a registered tax agent often get an extension into early 2027 — confirm your specific due date with your agent.

EOFY Checklist for Mining Contractors (FY26)

Quick Answer

The Australian financial year ends on 30 June. Before that date, mining contractors need to close out invoicing, lock timesheets and reconcile job costs. After it, the calendar gets tight: STP finalisation by 14 July, June quarter super by 28 July, and tax returns from October. This checklist covers the four things contractors get burned on every year — invoicing, timesheets, job costing and compliance.

Why EOFY hits mining contractors harder

A standard small business closes the books, lodges STP and moves on. Mining and field service contractors carry extra weight:

Multi-site crews on different rosters and awards
Retentions, variations and back-charges across long-running jobs
Plant hire, fuel and consumables that need to be allocated to the right cost codes
Subcontractor invoices arriving weeks after the work was done
Prequalification, insurance and ticket renewals stacked into July

The EOFY checklist

Invoicing & revenue

Issue all June progress claims and final invoices before 30 June
Chase outstanding retentions and overdue debtors
Reconcile variations, EOTs and back-charges with each client
Recognise WIP and unbilled revenue for jobs in progress
Send June statements to every active client
Review and write off genuinely bad debts before year-end

Timesheets & payroll

Lock every timesheet worked on or before 30 June
Reconcile RDO, annual leave and long service leave balances
Run an award interpretation check for overtime, allowances and penalties
Pay June super early so it clears by 28 July (avoid SG Charge)
Finalise STP Phase 2 by 14 July
Prepare workers' compensation wage declarations for renewal

Job costing & WIP

Close out actual vs budget on every active job
Allocate plant hours, fuel and consumables to the correct cost code
Reconcile subcontractor invoices against POs and site dockets
Snapshot gross margin by job, client and crew
Flag loss-making jobs and feed learnings into FY27 pricing
Archive completed jobs with full documentation for audit

Compliance & assets

Update the depreciation schedule and plant register
Confirm any instant asset write-off purchases are installed and ready for use
Renew public liability, plant and workers' comp insurances
Audit tickets, licences and inductions expiring in July–September
Review ISO, WHS and safety management system documents
Renew prequalifications (Avetta, ISN, Cm3) before they lapse

Key ATO due dates

30 June

End of FY26 — close timesheets, invoicing & job costing

14 July

STP Phase 2 finalisation due (20+ employees)

28 July

June quarter super & Q4 BAS due

21 August

July monthly BAS / PAYG instalment

31 October

Tax return due for self-lodgers

Dates above are general ATO guidance for FY26. Confirm your specific deadlines with your tax agent — lodging through an agent can shift several of them.

Common EOFY mistakes contractors make

Watch out for these

Forgetting to bill retentions and variations before 30 June
Leaving plant hours unallocated against jobs
Paying super on 28 July (it must be received by the fund, not sent)
Skipping STP finalisation — blocks employee tax returns
Missing prequalification or insurance renewals that lapse mid-July

How SprintSuite helps at EOFY

SprintSuite was built for mining and field service contractors, so the EOFY workflow is baked in — not bolted on.

Payroll & STP

Award interpretation, STP Phase 2 lodgement and super clearing in one place.

Job costing & WIP

Plant hours, consumables and subbie costs allocated to the right job in real time.

Reporting

Margin by job, client and crew so you walk into FY27 pricing with real numbers.

Frequently asked questions

Keep reading

When Does the Financial Year of Australia End?What Mining Contractors Need to Know in FY27 How Does Award Interpretation Work in Payroll Software?How Smart Mining Contractors Use January to Get Ahead

Get EOFY-ready with SprintSuite

Lock timesheets, finalise STP, reconcile job costs and walk into 1 July with clean books — all from one platform built for mining and field service contractors.

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EOFY Checklist for Mining Contractors (FY26)

Why EOFY hits mining contractors harder