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Your notional deduction

The amount you can claim under is calculated using an estimated figure, known as a notional deduction.

Last updated 21 November 2022

Conditions for claiming

Before you can claim a notional deduction under the R&D tax incentive, ensure you:

  • are an R&D entity
  • have conducted eligible activities
  • have registered your activities with AusIndustry (on behalf of Innovation Industry and Science Australia)
  • receive the major benefit from your registered activities
  • have received an advance overseas finding from Innovation Industry and Science Australia for any expenditure you intend to claim on R&D activities conducted overseas.

Expenditure must be incurred before it may be claimed as a notional R&D deduction.

For more information, see who R&D activities are conducted for.

You can also visit business.gov.auExternal Link for further information about:

  • the eligibility of your activities
  • registration of your R&D activities
  • advance findings.

How to calculate

After determining your eligibility for the R&D tax incentive, you will need to calculate the total amount of your notional R&D deductions to determine the offset you can claim.

To calculate your tax offset, multiply your total notional R&D deduction amount by the relevant offset rate and claim this amount in your company tax return.

On or after 1 July 2021

For income years commencing on or after 1 July 2021, the rate of the tax offset is reduced to the company tax rate for the portion of an entity’s notional R&D deductions that exceeds $150 million.

Years between 2014 and 2021

For income years commencing on or after 1 July 2014 but before 1 July 2021, the rate of the offset is reduced to the company tax rate for the portion of an entity's notional R&D deductions that exceeds $100 million for an income year.

General deduction not available

Where an amount is a notional deduction, you can't deduct it as a general deduction, for example, under section 8-1 of the ITAA 1997. This is because it is a step in working out the amount of the tax offset you may be entitled to, rather than a deduction amount.

How notional deductions apply

An R&D entity is entitled to a notional deduction for:

  • expenditure on R&D activities during the income year
  • the decline in value of depreciating assets used for R&D activities during the income year.

For 2020-21 and earlier years, an R&D entity's notional deduction amount included a balancing adjustment for depreciating assets used only for R&D activities.

For 2021-22 and later years, this balancing adjustment is claimed as an actual deduction and isn't claimed as a notional deduction in working out the entity's R&D tax offset.

Although amounts treated as notional deductions are not actually deducted in calculating your taxable income, they are treated as a deduction when applying:

  • a provision that prevents some or all of an amount being deducted
  • a provision that changes the income year in which an amount can be deducted
  • a provision that includes an amount in assessable income because an amount has been deducted
  • other provisions that refer to an entitlement to a tax offset under the R&D provisions.

We have examples of each of these limiting provisions.

We may be required to hold an opinion, form a judgment or make a determination if the notional deduction is an actual deduction.

Limiting provisions

Examples of a provision that prevents some or all of an amount being deducted are:

  • Division 26 of the ITAA 1997, which is about amounts you can't deduct, or can't deduct in full
  • Division 27 of the ITAA 1997, which is about the effect of input tax credits on deductions
  • the general anti-avoidance provisions in Part IVA of the Income Tax Assessment Act 1936 (ITAA 1936).

An example of a provision that changes the income year in which an amount can be deducted is the prepayment rules in Subdivision H of Division 3 of Part III of the ITAA 1936.

Examples of a provision that includes an amount in assessable income because an amount has been deducted are:

  • the rule about recoupment of deductible amounts in Subdivision 20-A of the ITAA 1997
  • the cost base rules for capital gains in Part 3-1 and Part 3-3 of the ITAA 1997
  • applying the R&D tax incentive provisions to work out your tax offset entitlement.

An example of other provisions that refer to an entitlement to a tax offset under the R&D provisions is the balancing adjustment provisions in section 40-292 and section 40-293 of the ITAA 1997.

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