Tax Consolidation: Forming a Client Group

Tax consolidation lets an eligible Australian head company and its wholly owned subsidiaries calculate income tax as one group. Forming the group requires an irrevocable written choice, a separate ATO notification and entry records that support each joining entity’s tax costs and losses.

What Tax Consolidation Changes

An income-tax consolidated group treats subsidiary members as parts of the head company for the group’s income-tax calculation. The head company lodges the group return and accounts for its income-tax liability. Dealings wholly within the group are generally disregarded for that calculation while the entities are members.

The choice concerns Australian income tax. A foreign parent’s overseas consolidation election does not form an Australian group. A wholly foreign-owned group with several Australian entry companies can instead fall within the separate multiple entry consolidated (MEC) group rules.

Keep these distinctions in the client file.

Arrangement	What determines the group	What it changes
Income-tax consolidation	Eligible head company, wholly owned members and a written choice	Group income-tax calculation and the head company’s return
Accounting consolidation	Control under AASB 10, subject to its scope and exemptions	Presentation of consolidated financial statements
GST grouping	Separate goods and services tax eligibility and grouping requirements	GST reporting and treatment of transactions within that GST group

The income-tax choice does not merge the legal entities or remove their company records, contracts or financial-reporting obligations. GST, fringe benefits tax and pay as you go withholding obligations need separate attention. Keep the legal-entity accounts even when the tax return combines the group’s results.

A common error is to treat a controlled company as an income-tax member automatically. The correct approach is to test income-tax membership separately from the AASB 10 control assessment.

Check the Head Company and Every Member

Test the proposed head company and each subsidiary at the time the group will form or the subsidiary will join. Common directors, shared shareholders and a common trading name do not establish the required ownership chain.

Start with an entity structure chart showing beneficial ownership through every level. Reconcile it to share registers, trust deeds and unit registers, partnership interests and acquisition documents. Mark the effective time of each ownership change.

Use the membership requirements in Division 703 of the Income Tax Assessment Act 1997.

• The head company must be an eligible Australian resident company, excluding a prescribed dual resident. Its income-tax treatment must satisfy the corporate tax rate requirement.
• Confirm that the proposed head company is not itself a subsidiary member of another consolidatable or consolidated group. Trace ownership above it as well as below it.
• Each subsidiary must be an eligible company, trust or partnership, wholly owned directly or through a permitted ownership chain. Test all membership interests, including different classes.
• A company subsidiary must meet the Australian residence and income-tax treatment requirements. A trust must meet the residence requirements for its particular trust type.
• Apply the statutory exclusions. Exempt entities and superannuation funds are among the entities that cannot join. Non-profit companies cannot be subsidiary members.

Keep a dated eligibility conclusion for every entity, with supporting documents and any statutory ownership exception relied on. A discretionary trust in the chain requires analysis of the specific membership rules. A family relationship alone is insufficient.

Consolidation is optional, but membership is all-in once the choice takes effect. Every eligible subsidiary is included, including an eligible subsidiary acquired later. You cannot leave an eligible loss company outside the group simply because its entry calculation is inconvenient.

Before choosing, compare the entry work and ongoing administration with the expected tax consequences. Establish how losses, asset tax costs and a possible future disposal affect the decision. Resolve an uncertain ownership or residence conclusion before fixing the commencement date.

Make and Notify the Consolidation Choice

The head company makes the written choice and separately notifies the Australian Taxation Office (ATO). A formation notification alone is not the written choice.

1. Approve the decision and formation date. Confirm eligibility on that date and record the authority of the person making the choice for the head company.
2. Make and retain the written choice. Identify the head company and the day from which the consolidatable group is taken to be consolidated. The choice cannot be revoked, and that day cannot be amended once chosen.
3. Complete the formation notification, NAT 6781. Match its group details to the written choice and membership register.
4. Obtain the declaration and lodge through the permitted channel. Retain the signed form, attachments, head-company authority and lodgement receipt. Reconcile the ATO’s formation confirmation to the chosen date and notified members.

The choice and formation notice are due no later than the day the head company lodges its return for the income year containing the formation date. If no return is required, use the day it would otherwise have been due. The ATO recommends lodging the notification 28 days before the return. That recommendation is separate from the legal deadline.

For NAT 6781, gather the head company’s legal name, ABN and TFN, plus the consolidation date. Prepare each member’s legal name and requested identifiers. Record join dates after formation and departures before notification, including leaving reasons and purchaser details where requested.

A registered tax agent must have authority from the head company and its declaration that the supplied information is true and correct. Match the signatory and contact details to the people authorised to act. Keep identifiers in the authorised client file and send the completed notice through the ATO’s permitted channels.

After formation has been notified, member entries and exits generally require notice within 28 days using NAT 6782. Changes before the formation notice follow the initial-notification rules and must be captured with that notice. The ATO’s notification requirements distinguish these events.

If the ATO confirmation omits a member or shows the wrong date, compare it with the retained choice, completed notice and ownership evidence. Resolve the discrepancy with the ATO before relying on the registration record for the return. An administrative correction does not permit the client to change an irrevocable chosen date.

Prepare Entry Tax Costs and Loss Records

Entry tax cost setting determines the tax amounts the head company uses for assets brought into the group. The allocable cost amount (ACA) connects the group’s cost of acquiring the joining entity to those assets, with statutory adjustments.

Build the calculation from the joining-time accounts and acquisition evidence. Obtain consideration and completion adjustments, the cost of membership interests, recognised liabilities and the tax treatment of each liability. Reconcile profits and distributions before entry, historical losses and inherited deductions to supporting schedules.

Identify assets beyond the balance-sheet labels, including relevant unrecognised business assets. Distinguish retained cost base assets from reset cost base assets. Support the market values used to allocate the remaining ACA across reset assets and apply the rules for each asset type. The ATO’s tax cost setting ruling explains why commercial assets require identification.

A purchase price allocation for financial reporting is not automatically the tax cost setting calculation. Keep a bridge between acquisition consideration, accounting carrying amounts, market values and final tax amounts. Formation, acquisition of an existing consolidated group and linked joining entities can require different calculations.

Losses need their own analysis. Start with the company loss tests, then apply the consolidation transfer tests to each tax loss and net capital loss. A loss in a subsidiary’s accounts does not establish a transferable tax loss.

For transferred losses, retain the transferor, loss year, loss type and transfer-test conclusion. Record the loss bundle and available fraction where applicable. The fraction generally uses the loss entity’s modified market value and the head company’s adjusted group market value. It limits utilisation alongside other loss rules, with adjustments for relevant later events.

Transfer eligibility and annual utilisation are separate decisions. Model the usable amount before assuming an acquired loss will offset the group’s profits immediately. Keep the valuation assumptions and calculations with the ATO loss guidance and the relevant Division 707 analysis.

The head company’s entry file must also contain the asset tax register, depreciation and capital gains tax schedules, franking account reconciliation and any franking deficit consequences. Reconcile transferred franking credits under their own rules. Carry these records forward separately from accounting goodwill and deferred tax balances.

Keep the Group’s Records Reconciled

Reconcile each entity’s accounts to the head company’s tax calculation without deleting the entity-level history. Membership can start partway through an income year, so a full-year trial balance alone cannot identify the group’s taxable amounts.

Consider a fictional acquisition. An existing head company buys all the shares in an eligible Australian operating company at settlement. The operating company joins the group at the applicable joining time. Its books show cash, equipment, trade debts and a carried-forward tax loss.

The accountant retains the settlement accounts and purchase agreement, then prepares the ACA and asset tax schedules. The loss file records whether the loss transfers and how its use is limited. Post-entry operations enter the head company’s tax calculation, while the operating company’s non-membership period is dealt with separately.

The operating company continues recording its own invoices, payroll and bank transactions. A later service charge between members stays in their legal-entity accounts. The group tax reconciliation identifies its treatment under the single entity rule. If the recipient is outside the tax group, the accountant cannot discard the charge as an intragroup item.

Maintain the recurring work in a reconciliation register.

Record	Reconciliation	Expected result
Membership register	Ownership events, entry and exit times, ATO notices	Accounts split at the correct membership boundaries
Entity trial balances	Group tax adjustments and intragroup dealings	Each included amount traces to its source entity
Asset schedules	Entry tax costs, depreciation and disposals	Tax deductions use the group’s tax amounts
Loss and franking records	Opening balances, transfers and utilisation	Closing balances agree to the head company’s schedules
Tax accounting balances	Current tax, deferred tax and funding balances	Entity and group financial statements reconcile
Exit file	Leaving assets, liabilities and membership interests	Disposal calculations use the required exit tax costs

Tax consolidation accounting follows Interpretation 1052 alongside AASB 112 where those standards apply. Separate financial statements continue recognising tax expense and deferred tax under an appropriate allocation method. Subsidiaries account for current tax amounts and relevant loss-related deferred tax assets assumed by the head company.

Record amounts arising under the tax funding arrangement and any resulting equity contribution or distribution. Reconcile deferred tax to the relevant carrying amounts and tax bases under AASB 112. Do not clear every subsidiary’s deferred tax balance merely because the group lodges one return.

Before approving the group return, reconcile the membership register to the entities and periods included. Match asset, loss and franking schedules to the tax reconciliation, then complete the wider company tax compliance review and head-company approval.

Allocate Tax Payments Separately

The consolidation choice makes the head company responsible for group income tax, but it does not decide how subsidiaries fund that payment. Put the funding arrangement and the consequences of payment failure before the client alongside the formation decision.

A tax funding agreement sets the members’ contributions and settlement arrangements. A valid tax sharing agreement addresses allocation of covered group liabilities if the head company defaults. An internal funding allocation alone does not establish the statutory protection of a tax sharing agreement.

Arrange review of the covered liabilities, reasonable allocation method, parties and execution timing. Confirm who monitors payment deadlines and who updates the agreements when membership changes. Members can face joint and several liability when the head company fails to pay, subject to the statutory tax sharing rules.

Before an entity leaves, review its unpaid contributions, coverage under the agreement and the requirements for a clear exit. Match those conclusions to the sale documents and exit tax calculation. Finalise formation only when the retained choice, membership records, entry schedules and payment arrangements all describe the same client group.