By Peter Economos, CA — Managing Director Reviewed by Ben Wong, FCA, CTA — Director (Tax) Last Reviewed: May 2026
The 12-month prepayment rule allows eligible Australian small business entities to claim an immediate deduction for prepaid expenses where the eligible service period is 12 months or less and ends in the next income year.
The rule is set out in Sections 82KZL to 82KZMF of the ITAA 1936. Eligibility requires aggregated turnover under $10 million, with an extension available to entities under $50 million that elect to use the concession.
The rule applies only to services and rights, not to goods. The actual tax saving equals the deduction multiplied by the business’s applicable tax rate, not the deduction itself. The decision to prepay depends on profit position, borrowing intentions, and broader EOFY strategy.
How the 12-Month Prepayment Rule Works in 2025-26
The 12-month prepayment rule allows an eligible small business to claim an immediate deduction for prepaid expenditure where the eligible service period is 12 months or less and ends no later than the last day of the income year following the year of payment.
The rule sits under Sections 82KZL to 82KZMF of the ITAA 1936 and applies to expenditure that would otherwise be deductible under Section 8-1 of the ITAA 1997. The eligible service period begins on the later of the day the service starts or the day the expenditure is incurred. It ends on the last day the service is provided.
The rule is binary. The prepayment either qualifies in full as an immediate deduction or fails and must be apportioned over the eligible service period or 10 years, whichever is shorter. There is no partial pass.
A business paying $24,000 on 1 June 2026 for 12 months of rent covering 1 July 2026 to 30 June 2027 deducts the full $24,000 in the 2025-26 income year. The same prepayment made one day later, covering 2 July 2026 to 1 July 2027, fails the rule entirely.
Who Qualifies for the 12-Month Prepayment Rule
Only small business entities with an aggregated annual turnover under $10 million qualify automatically for the 12-month prepayment rule, with an extension available to businesses under $50 million that elect to use the concession.
Two qualifying categories exist:
- A small business entity (SBE) with aggregated turnover under $10 million
- A business with aggregated turnover under $50 million that elects to use the SBE concessions is treated as if it were an SBE for prepayment purposes
The $50 million election is invisible in most accounting firm content but represents a real planning opportunity for mid-market businesses that have grown past the $10 million threshold.
Aggregated turnover is broader than the headline turnover of the trading entity. It includes the business itself, plus any connected entities and affiliates. A $7 million trading company with two connected family entities, each turning over $4 million, is over the SBE threshold and falls into the $50 million election category, even where no single entity is “small” in isolation.
Most founders assess eligibility based on their primary entity’s turnover. The correct test applies the aggregated turnover and small business eligibility tests across all connected and affiliated entities.
What You Can Prepay: Services and Rights, Not Goods
The 12-month prepayment rule applies only to expenditure for services or rights provided over an eligible service period, not to prepayments for goods or capital assets.
The most common compliance failure is business owners prepaying for goods (stock, equipment, materials) and assuming the rule applies. It does not. The rule sits within Section 8-1 territory, revenue expenditure for services and rights — and is bounded by the “do something or refrain from doing something” test in Section 82KZL.
Services and rights that qualify include:
- Rent and commercial lease payments
- Annual business insurance premiums (general, professional indemnity, public liability)
- Software subscriptions and SaaS licences
- Professional service retainers (legal, accounting, advisory)
- Trade subscriptions and association memberships
- Advertising and marketing service contracts
- Loan interest (subject to tax shelter restrictions)
Expenditure that does NOT qualify includes trading stock prepayments (governed by trading stock rules, not Section 82KZL), capital expenditure deductible under Division 40, and employee remuneration prepayments, which are specifically excluded.
The End-Date Trap: When 12 Months Still Fails
A prepayment with an eligible service period of 12 months or less can still fail the rule if the service period ends after the last day of the income year following payment.
The two tests are cumulative. The eligible service period must not exceed 12 months, AND the eligible service period must end no later than the last day of the income year following payment. Failing either test denies the immediate deduction entirely.
Worked example: when the rule applies
A small business pays $24,000 on 1 June 2026 for 12 months of rent covering 1 July 2026 to 30 June 2027.
Test | Result |
Service period length | 12 months — passes |
Service period end date | 30 June 2027 (last day of 2026-27 income year) — passes |
Outcome | Full $24,000 deductible in 2025-26 |
Worked example: when the rule fails
The same business pays $24,000 on 30 June 2026 for 12 months of advertising covering 15 July 2026 to 14 July 2027.
Test | Result |
Service period length | 12 months — passes |
Service period end date | 14 July 2027 (in the 2027-28 income year) — fails |
Outcome | $0 deductible in 2025-26; apportionment across 2026-27 and 2027-28 |
The end-date test is binary. A single day past 30 June 2027 in this scenario denies the entire current-year deduction. Late-June prepayment timing decisions sit inside a broader assessment we covered in reviewing your tax position before 30 June with a tax planning framework.
How to Calculate Your Actual Tax Saving
The actual tax saving from a prepayment equals the deduction amount multiplied by the business’s applicable tax rate, not the deduction amount itself.
This is the central misunderstanding behind most tax-driven prepayments.
Prepayment | Tax rate | Tax saving | Net cost to business |
$24,000 rent | 25% (base rate company) | $6,000 | $18,000 |
$24,000 rent | 30% (company) | $7,200 | $16,800 |
$24,000 rent | 47% (top marginal rate sole trader) | $11,280 | $12,720 |
A $24,000 prepayment on rent the business genuinely needs is a $16,800 net cost in cash flow terms. A $24,000 prepayment on a service the business does not need is a $16,800 loss masquerading as a $7,200 saving. The deduction never pays for the expense. The tax rate does.
Strategic Prepayment Opportunities Before 30 June
The 12-month prepayment rule supports several common pre-30 June strategies that reduce taxable income in the current year.
Strategic prepayments worth modelling before 30 June include rent on commercial premises where the lease cycle aligns, annual business insurance premiums, software and SaaS subscription renewals, professional service retainers, advertising and media buying contracts, and trade or industry association memberships.
Each prepayment must have a genuine commercial rationale. Prepayment patterns timed purely to access deductions can be examined under Part IVA general anti-avoidance provisions. The strategy is “prepay what you would pay anyway, earlier.” It is not “prepay things you don’t need to chase a deduction.”
Prepayment decisions should be modelled alongside other pre-30 June tactics. For businesses also considering capital purchases, the instant asset write-off threshold trap as a parallel EOFY decision covers the same decision framework principles applied to depreciable assets.
When Prepayment Is Wrong, Even When Eligible
Eligibility for the 12-month prepayment rule does not automatically mean using it produces the best financial outcome.
A business already in tax loss gets no current-year cash benefit from prepayment. The deduction increases the carry-forward loss but produces no immediate tax refund. A future high-profit year may absorb the deduction more efficiently.
Banks assess taxable income for borrowing capacity. A business owner planning a property purchase or commercial loan within 12 months may find that stacking prepayment deductions reduces borrowing capacity at a multiple of the deduction value.
Aggressive prepayment patterns, particularly interest prepayments on investment-related borrowings, can fall under Section 82KZME tax shelter exclusions or attract Part IVA scrutiny. The rule is for genuine commercial expenditure, not for engineered deduction timing.
Where cash recovery rather than deduction acceleration is the priority, concessional super contribution timing as an alternative deduction strategy is often a stronger position than prepaying services.
Key Takeaways: The Prepayment Decision Framework
The 12-month prepayment rule is a deduction timing concession, not a discount on the expense itself.
The rule is narrow: SBE eligibility under $10 million (or $50 million by election), 12-month service period, end date in the next income year, services and rights only. The actual tax saving is the prepayment multiplied by your tax rate, not the prepayment itself. The right decision depends on profit position, borrowing intentions, cash flow, and broader EOFY strategy.
Prepayment rewards businesses that need the service and can afford the cash outflow. It does not reward businesses that prepay to chase a deduction. For a structural review of EOFY deduction decisions, strategic tax advisory for EOFY deduction decisions is the right starting point.
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Disclaimer: We endeavour to make sure the information provided in this guidance is up to date and accurate. Please note, that the information is only intended to be a guide, with a general overview of information. This guidance is not a comprehensive document and should not be interpreted as legal advice or tax advice. The information is general in nature. You should seek the assistance of a professional opinion for any legal and tax issues related to your personal circumstances.