Company: RTNTF
Filing Date: 2025-02-20
Form Type: 20-F
Source: 0001628280-25-006642
Chunk: 392

Company: RIO TINTO LTD
Filing Date: 2025-02-20
Form: 20-F
Chunk 392
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 | 2.2%                  | –%                          |
| Switzerland                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 0.9%                | 1.0%                  | 2.2%                       | 1.5%                | 1.2%                  | 2.3%                        |
| (a)The long-term inflation assumption shown for the UK is for the Retail Price Index. The assumption for the Consumer Price Index at31 December 2024was2.7%(2023:2.5%).                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |                     |                       |                            |                     |                       |                             |

The main financial assumptions used for the healthcare plans, which are predominantly in the US and Canada, were: discount rate: 5.3% ( 2023 :

5.0% ); medical trend rate: 9.7% reducing to 4.7% by the year 2034 , broadly on a straight line basis ( 2023 : 8.3% , reducing to 4.7% by the year

2032 ); claims costs based on individual company expe rience.

For both the pension and healthcare arrangements, the post-retirement mortality assumptions allow for future improvements in longevity. The

mortality tables used imply that a man aged 60 at the balance sheet date has a weighted average expected future lifetime of 27years ( 2023 : 27

years ) and that a man aged 60 in 2044 would have a weighted average expected future lifetime of 28years ( 2023 : 28years ). The mortality

tables are generally based upon the latest standard tables published in each country, adjusted appropriately to reflect the actual mortality

experience of the plan participants where credible data is available. Adjustments have been made to some of our plans within the demographic

assumptions for the impact of the COVID-19 pandemic.

Sensitivity analysis The values reported for the defined benefit obligations are sensitive to the actuarial assumptions used for projecting future benefit payments and discounting those payments. In order to estimate the sensitivity of the obligations to changes in assumptions, we calculate what the obligations would be if we were to make changes to each of the key assumptions in isolation. The difference between this figure and the figure calculated using our stated assumptions is an indication of the sensitivity to reasonably possible changes in each assumption. The results of this sensitivity analysis are summarised in the table below. Note that this approach