Company: RTNTF
Filing Date: 2025-03-13
Form Type: 424B5
Source: 0001104659-25-023282
Chunk: 78

Company: RIO TINTO LTD
Filing Date: 2025-03-13
Form: 424B5
Chunk 78
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 the relevant date will be postponed to the next day that is a business day. However, if that date would fall in the next succeeding calendar month, such date will be the immediately preceding business day.

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TABLE OF CONTENTS

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#### Calculation agent
. All calculations relating to a series of floating rate debt securities will be made by the calculation agent, an institution that we appoint as our agent for this purpose. The calculation agent will determine on each interest determination date the interest rate that takes effect on the applicable interest reset date. In addition, the calculation agent will calculate the amount of interest that has accrued during each interest period. Upon request, the calculation agent will provide notice of the interest rate then in effect and, if determined, the interest rate that will become effective on the next interest reset date. The calculation agent’s determination of any interest rate, and its calculation of the amount of interest for any interest period, will be final and binding in the absence of manifest error. All percentages resulting from any calculation relating to a note will be rounded upward or downward, as appropriate, to the next higher or lower one hundred- thousandth of a percentage point. All amounts used in or resulting from any calculation will be rounded upward or downward, as appropriate, to the nearest cent. The calculation agent for a particular series will be named in the applicable prospectus supplement.

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#### Day count fraction
. We will compute interest on fixed rate debt securities on the basis of a 360-day year of twelve 30-day months. In the case of floating rate debt securities, the calculation agent will calculate the amount of interest that has accrued during each interest period — i.e., the period from and including the original issue date, or the last date to which interest has been paid or made available for payment, to, but excluding, the payment date. For each such interest period, the calculation agent will calculate the amount of accrued interest by multiplying the face amount of the floating rate debt security by the applicable interest rate and an accrued interest factor for the interest period. This factor will be determined in accordance with the day count convention specified in the applicable prospectus supplement. If “Actual/360 (ISDA)”, “Act/360 (ISDA)” or “A/360 (ISDA)” is specified, the factor will be equal to the number of days in the interest period divided by 360.

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#### Regular record dates for interest
. With respect to each interest payment date, the regular record date for interest will