Surviving EOFY in a Mining Company: A Finance Team Playbook

What the textbooks don't tell you about closing the books when your assets are underground

Every year, sometime around mid-May, a familiar energy settles over mining company finance teams. Audit engagement letters land. The PBC list arrives — always longer than last year. Someone in procurement sends a passive-aggressive reply-all about the cut-off memo. And somewhere on site, an operations manager is asking why they can't raise a purchase order after 4pm on the 30th of June.

If you work in finance at a mining company, EOFY is not just month-end with a bigger to-do list. It is a concentrated test of technical accounting judgement, cross-functional coordination, and — if we're honest — nerves. The estimates are bigger, the disclosures are more scrutinised, and the audit team has questions about your rehabilitation provision that will take two weeks to answer properly.

This article is a practical walkthrough of the EOFY close from the perspective of a mining company finance team. It covers the sequencing, the judgements that matter most, the ERP steps that catch people out, and the risks that turn a tidy June into a chaotic August.

Why EOFY in Mining Is Different

Most listed companies have a 30 June year-end and face roughly the same regulatory timeline: finalise accounts, get auditor sign-off, lodge the Annual Report with ASIC and ASX within two months. The broad strokes are the same across industries.

What makes mining different is the nature of the assets and the estimates embedded in the balance sheet.

You are not depreciating office furniture. You are depreciating a processing plant that sits on a declining ore body, under a rehabilitation liability that may not crystallise for thirty years, after stripping overburden whose accounting treatment depends on a judgement call that IFRIC 20 still doesn't make easy. Your inventory is a pile of crushed rock on a leach pad, and the recoverable ounces embedded in it are an estimate derived from a metallurgical model that someone in the processing team owns and Finance has to review.

That context shapes everything about how you approach EOFY. The numbers are big, the assumptions are specific, and the audit team will ask hard questions about all of them.

The Timeline That Actually Works

Across my experience in mining finance, the EOFY close that goes smoothly is the one that starts in June — not July. Here is the sequencing that holds up in practice.

1 June — Get the audit PBC list and circulate your own task list. The moment the auditors confirm their engagement, request their prepared-by-client list. Map every item to an owner internally and build your EOFY tracker from day one. Auditors will not wait for you to find who owns the rehabilitation closure cost model in week three of July.

By 13 June — Preliminary accruals from all sites. Site finance teams need a head start. Issue a standardised submission template — accruals schedule, contractor estimates, royalties, leave liabilities, any site-specific items — and get preliminary numbers by mid-June. You will revise them. That is fine. What you cannot do is receive all site submissions on 3 July and expect a 22 July sign-off on the group accounts.

24–28 June — Stockpile surveys. Physical inventory in mining is not a warehouse count. Ore stockpiles are surveyed by drone or licensed surveyors. Bullion on hand, reagents, consumables — these all need physical verification before 30 June. Get the survey schedule confirmed by May. Surveyors book out.

30 June, 5pm — Hard cut-off. No new purchase orders, no goods receipts, no supplier invoices posted to the prior year after this point. The cut-off memo goes to procurement, operations, and every site manager. It goes out in early June, not on the 29th. And yes, you will still get a call on the morning of 1 July from someone who forgot.

1 July — Period lock. SAP period 12 locks for AP, AR, and payroll. For Pronto Xi sites, confirm the period-end close sequence with your system administrator before you do anything else. The year-end rollover in Pronto creates the new financial year file — it is not reversible without pain.

5–7 July — The heavy accounting week. This is where the real work happens: final accruals posted, fixed assets capitalised from WBS, rehabilitation provision remeasured, intercompany balances reconciled. Get this week protected in the diary for the whole team.

12 July — Tax and Treasury locked. Income tax provision, deferred tax, royalties accrual, hedge effectiveness documentation. All done before consolidation begins.

18–22 July — Consolidation and draft financials. Group consolidation workpapers complete, draft statements to the Financial Controller. From here it is management review, Audit Committee, and auditor sign-off.

31 August — Annual Report lodged. That is the statutory deadline for listed entities under the Corporations Act. Two months from year-end. It sounds comfortable until you account for three rounds of Board review, a sign-off process that always takes longer than expected, and an auditor who has found something in Note 14 that needs a conversation.

The Accounting Judgements That Define Your Year-End

Rehabilitation Provision — AASB 137

This is the most scrutinised estimate on the balance sheet of any mining company, and for good reason. A rehabilitation liability represents the present value of the estimated cost to restore a mine site to an acceptable condition at the end of its life. For a large open-cut gold mine, that number can be hundreds of millions of dollars.

At every EOFY, you need to:

• Obtain updated closure cost estimates from the environment and sustainability team. These should reflect current contractor rates, scope changes, and any regulatory updates.

• Apply a risk-free discount rate consistent with the expected timing of the liability — typically a government bond yield matching the approximate duration.

• Unwind the discount for the year (finance cost, not operating cost — classification matters for your segmental reporting).

• Remeasure for changes in estimated cash flows and adjust the corresponding asset or recognise a P&L charge if the mine is in a later production stage.

The common mistake I see is treating the rehabilitation provision as a set-and-forget number that gets tweaked at EOFY. Auditors are increasingly focused on whether the undiscounted cash flows genuinely reflect current rehabilitation scope. If your mine has expanded its pit, added a tailings storage facility, or changed its closure plan in the past year, the provision needs to reflect that.

Document your assumptions clearly: undiscounted cash flows, discount rate, inflation rate, and the year you expect rehabilitation to begin. These go into the Notes to the Financial Statements and they will be read.

Impairment Assessment — AASB 136

You are required to assess at every reporting date whether there are indicators of impairment across your Cash Generating Units. In a gold mining context, those CGUs are typically individual mine sites or development projects.

Indicators you cannot ignore:

• A sustained decline in the gold spot price relative to the price deck used in your original reserve estimates

• A downward revision of ore reserves (these get announced to ASX, which means the auditors are reading them too)

• Significant cost overruns on capital projects that change the economics of the operation

• Permitting or regulatory issues that affect mine life

Where indicators exist, you need a formal Value-in-Use model or a Fair Value Less Costs to Sell assessment. The key assumptions — gold price deck, AISC, discount rate, mine life, capital profile — need to be consistent across your impairment papers, your reserve statements, and your public disclosures. Inconsistency across these documents is a red flag that auditors will pick up and that sophisticated investors will notice.

Capitalisation Review — AASB 116, AASB 6, IFRIC 20

Every WBS element (project in SAP terminology) sitting in Construction in Progress at 30 June needs a conscious decision: capitalise, continue carrying, or expense.

Assets that are substantially complete and ready for their intended use must be transferred to the fixed asset register. In SAP, that means running CJ88 to settle the WBS element and AS01 to create the asset master record. Do not let completed assets sit in CIP through July because the project team has not issued a commissioning certificate. Get that process moving in June.

For open-cut mines, stripping costs add another layer of judgement under IFRIC 20. If the stripping activity provides access to ore that will be mined in future periods, you capitalise the stripping costs as a stripping activity asset. If the strip-ratio on a given pushback is significantly above the life-of-mine average, that is your signal to look at this carefully.

ERP: The Practical Steps People Forget

SAP S/4HANA

The period management steps in SAP are straightforward in theory and surprisingly easy to mishandle under time pressure. A few things worth locking in:

• OB52 and MMPV: Confirm that periods 1–11 are locked and period 12 is open before the final close run. Post your depreciation (AFAB) and FX revaluation (F.05 / F101) before you lock period 12.

• Foreign currency revaluation: If you have USD-denominated balances — gold sales receivables, USD debt facilities, intercompany loans — these need revaluing at the 30 June spot rate. F.05 handles GL balances; F101 handles open AP/AR items. It sounds obvious, and it still gets missed.

• Asset history sheet: Run S_ALR_87013611 after your final depreciation run and reconcile the closing net book value to your GL asset accounts. Any discrepancy needs to be investigated before you sign off the fixed asset note.

• Cost centre and internal order settlement: KSU5 and KO8G need to run before you can produce clean cost centre reports for the year. Sequence matters — settle internal orders before cost centres.

Pronto Xi (Regional Sites)

For teams running Pronto at regional operations, the year-end rollover is a one-way door. Make sure your trial balance is extracted and reconciled to your consolidation template before the rollover runs. Confirm the sequence with your Pronto system administrator — the steps differ slightly between versions and the consequences of getting them wrong are not fun to unwind.

Intercompany: The Silent Schedule Slip

Intercompany eliminations are almost never completed on the first pass. Someone's management fee charge does not match. A loan balance has an accrued interest discrepancy. An upstream entity has recognised a dividend that the downstream entity has not yet receipted.

The way to avoid this consuming two extra weeks in July is to run an intercompany matrix in June. Get all entities to confirm their intercompany balances with each other — loans, trade balances, management charges, dividends declared — before the year-end crunch begins. Any item above your agreed materiality threshold that is unreconciled at consolidation needs an explanation and, if it cannot be resolved, an escalation to the Financial Controller.

This is not glamorous work. It is the difference between a consolidation that closes in a week and one that closes in three.

What Auditors Are Actually Focused On

Based on the PBC lists and audit queries I have seen in recent years, the areas attracting the most focus in mining company audits are:

Rehabilitation provision assumptions — specifically whether closure cost estimates are current, whether the discount rate is appropriately derived, and whether the related asset impairment indicators have been assessed.

Impairment — particularly for assets where the gold price deck used in VIU models is above current spot, or where reserve estimates have moved materially.

Revenue cut-off — the timing of gold revenue recognition around 30 June, including the treatment of gold on hand, gold in transit, and provisional pricing adjustments.

Capitalisation — what is sitting in CIP and why, and whether any items have been inappropriately held off the fixed asset register.

Related party transactions — management fees, intercompany loans at non-commercial terms, and transactions with entities related to directors.

Being ahead of your auditors on these topics — having the papers ready, the assumptions documented, and the key judgements written up for the FC's sign-off — is what separates a clean audit from an extension request.

A Word on the Human Side

EOFY is a high-pressure period and finance teams in mining are not large. You may be the only person who truly understands the rehabilitation provision model, or the only one who can explain to the auditors why the stripping asset capitalisation changed this year. That concentration of knowledge is a risk — both to you personally and to the close process.

Two things help. First, write things down. Management papers, assumption summaries, reconciliation workpapers with narrative — these protect you when an auditor asks a question six weeks after you made the judgement call, and they protect the business when you are not there to explain it.

Second, sequence the close deliberately. The teams that struggle at EOFY are usually the ones who try to do everything in the first two weeks of July. The teams that manage it well start in June, get site submissions early, and treat the July window as execution rather than planning.

EOFY is hard. It is also, in my view, the most intellectually interesting period in the mining finance calendar. The judgements are real, the numbers matter, and getting them right — and being able to explain why they are right — is what the job is actually about.