Company: RTNTF
Filing Date: 2025-03-13
Form Type: 424B5
Source: 0001104659-25-023282
Chunk: 45

Company: RIO TINTO LTD
Filing Date: 2025-03-13
Form: 424B5
Chunk 45
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 every net payment of principal of (and premium, if any, on) and interest on the Notes after deduction or other withholding for or on account of any present or future tax, assessment, duty or other governmental charge, will not be less than the amount that would have been payable on the Notes in the absence of such deduction or withholding. The requirement to pay additional amounts and the exceptions thereto are discussed in greater detail on page 19 of the Base Prospectus under “Description of Guaranteed Debt Securities — Special Situations — Payment of Additional Amounts”.

#### Tax Redemption
In the event of various tax law changes after the date of this prospectus supplement and other limited circumstances that require us, Rio Tinto plc or Rio Tinto Limited to pay additional amounts as described in the Base Prospectus on page 19 under “Description of Guaranteed Debt Securities — Special Situations — Payment of Additional Amounts”, we, Rio Tinto plc or Rio Tinto Limited may call all, but not less than all, of the Notes for redemption. This means we may repay the Notes early. Our ability to redeem the Notes is discussed in greater detail on page 19 of the Base Prospectus under “Description of Guaranteed Debt Securities — Special Situations — Optional Tax Redemption.” If we call the Notes as a result of such tax law changes, we must pay 100% of their principal amount (including any additional amounts). We will also pay the holders accrued interest if we have not otherwise paid interest through the redemption date (including any additional amounts). Notes will stop bearing interest on the redemption date, even if the holders do not collect their money.

#### Notice of Redemption
In either of the situations discussed above, we will give notice to DTC of any redemption we propose to make at least 10 days, but not more than 60 days, before the redemption date. Notice by DTC to participating institutions and by these participants to street name holders of indirect interests in the Notes will be made according to arrangements among them and may be subject to statutory or regulatory requirements.

#### Defeasance and Discharge
We may release ourselves from any payment or other obligations on the Notes as described under “Description of Guaranteed Debt Securities — Defeasance and Covenant Defeasance — Defeasance and Discharge” on page 24 of the Base Prospectus.

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TABLE OF CONTENTS

### TAXATION
This section describes the material Australian, UK and US federal income tax consequences of acquiring, owning