EXHIBIT 99.1 Publication of Report on Payments to Governments for the year ended 31 December 2023 23 May 2024 Our report on payments to governments made by Rio Tinto and its subsidiary undertakings for the year ended 31 December 2023 as required under the UK’s Report on Payments to Governments Regulations 2014 (as amended in December 2015) has been filed at Companies House. The report also satisfies the requirements of Rule 4.3A of the Disclosure and Transparency Rules of the Financial Conduct Authority in the United Kingdom. Text of Report on Payments to Governments for the year 2023 filed at Companies House: GOVERNMENT PAYMENTS BY TYPE Company Name RIO TINTO PLC Company Number 00719885 Report Name Extractive Industry Reporting Report End Date 31-Dec-23 Currency USD Country Code Tax Authority Name Payment Type Unit Measure Volume Valuation Method Amount Notes Version Filing Date ARG ADMINISTRACION FEDERAL DE INGRESOS PUBLICOS Tax 0 5,159,312 1 23-May-24 AUS AUSTRALIAN TAXATION OFFICE Tax 0 4,122,451,332 1 23-May-24 AUS NORTHERN TERRITORY REVENUE OFFICE Royalties 0 32,478,995 1 23-May-24 AUS STATE OF QUEENSLAND Royalties 0 86,752,589 1 23-May-24 AUS STATE OF WESTERN AUSTRALIA Royalties 0 2,048,029,830 1 23-May-24 AUS NORTHERN TERRITORY REVENUE OFFICE Fees 0 6,609,036 1 23-May-24 AUS STATE OF QUEENSLAND Fees 0 2,500,730 1 23-May-24 AUS STATE OF WESTERN AUSTRALIA Fees 0 1,186,355 1 23-May-24 CAN CANADA REVENUE AGENCY Tax 0 147,951,564 1 23-May-24 CAN GOVERNMENT OF NORTHWEST TERRITORIES Tax 0 21,499,191 1 23-May-24 CAN GOVERNMENT OF NEWFOUNDLAND AND LABRADOR Tax 0 54,321,350 1 23-May-24 CAN REVENUE QUEBEC Tax 0 8,201,622 1 23-May-24 CAN CONSEIL DES INNUS DE EKUANITSHIT Fees 0 814,562 1 23-May-24 CAN GOVERNMENT OF NORTHWEST TERRITORIES Fees 0 6,651,352 1 23-May-24 CAN INNU NATION (LABRADOR) Fees 0 2,471,801 1 23-May-24 CAN LES INNUS DE UASHAT MAK MANI- UTENAM AND LES INNUS DE MATIMEKUSH-LAC JOHN Fees 0 4,153,259 1 23-May-24 CAN NASKAPI NATION OF KAWAWACHIKAMACH Fees 0 7,424,417 1 23-May-24 CAN LUTSEL K'E DENE FIRST NATION Fees 0 296,058 1 23-May-24 CAN GOVERNMENT OF NEWFOUNDLAND AND LABRADOR Fees 0 177,676 1 23-May-24 CAN TLICHO GOVERNMENT Fees 0 1,530,824 1 23-May-24 CAN YELLOWKNIVES DENE FIRST NATION Fees 0 830,529 1 23-May-24 MDG MADAGASCAR - GENERAL DIRECTION OF TAXES Tax 0 950,386 1 23-May-24 MDG MADAGASCAR - GENERAL DIRECTION OF TAXES Royalties 0 3,527,727 1 23-May-24 MNG MONGOLIA - GENERAL DEPARTMENT OF TAXATION Royalties 0 90,462,825 1 23-May-24 MNG GOBI OYU DEVELOPMENT SUPPORT FUND Bonuses 0 6,206,186 A 1 23-May-24 MNG UMNUGOVI PROVINCE Tax 0 42,912,522 1 23-May-24 2 / 5 MNG UMNUGOVI PROVINCE Fees 0 8,997,691 1 23-May-24 MNG ULAANBAATAR CITY Fees 0 807,199 1 23-May-24 MNG WATER AGENCY GOVERNMENT Fees 0 101,144 1 23-May-24 MNG MINERAL RESOURCES AND PETROLEUM AUTHORITY OF MONGOLIA Fees 0 221,823 1 23-May-24 PER PRIVATE INVESTMENT PROMOTION AGENCY OF PERU Fees 0 26,300,000 1 23-May-24 PER GEOLOGICAL MINING AND METALLURGICAL INSTITUTE OF PERU Fees 0 2,090,444 1 23-May-24 USA USA - INTERNAL REVENUE SERVICE Tax 0 (2,295,991) 1 23-May-24 USA CALIFORNIA FRANCHISE TAX BOARD Tax 0 2,393,055 1 23-May-24 USA NEW YORK DEPARTMENT OF TAXATION AND FINANCE Tax 0 740,000 1 23-May-24 USA WISCONSIN DEPARTMENT OF REVENUE Tax 0 650,000 1 23-May-24 USA ARIZONA DEPARTMENT OF REVENUE Tax 0 440,000 1 23-May-24 USA ILLINOIS DEPARTMENT OF REVENUE Tax 0 320,000 1 23-May-24 USA OREGON DEPARTMENT OF REVENUE Tax 0 165,000 1 23-May-24 USA KENTUCKY DEPARTMENT OF REVENUE Tax 0 150,000 1 23-May-24 USA UTAH STATE TAX COMMISSION Royalties 0 11,379,981 1 23-May-24 USA KERN COUNTY TREASURER AND TAX COLLECTOR (CA) Fees 0 8,084,553 1 23-May-24 USA SALT LAKE COUNTY (UT) Fees 0 43,561,725 1 23-May-24 USA ARIZONA DEPARTMENT OF REVENUE Fees 0 452,368 1 23-May-24 USA NEW MEXICO DEPARTMENT OF REVENUE Fees 0 158,565 1 23-May-24 USA UTAH STATE TAX COMMISSION Fees 0 115,054 1 23-May-24 ZAF SOUTH AFRICAN REVENUE SERVICE Tax 0 59,445,724 1 23-May-24 ZAF SOUTH AFRICAN REVENUE SERVICE Royalties 0 6,896,443 1 23-May-24 TOTAL 6,876,726,808 Note A: Bonuses includes amounts paid under Oyu Tolgoi LLC's Communities Co-operation Agreement. GOVERNMENT PAYMENT TOTALS Company Name RIO TINTO PLC Company Number 00719885 Report Name Extractive Industry Reporting Report End Date 31-Dec-23 Currency USD Government Country Code Amount Version Notes Filing Date ADMINISTRACION FEDERAL DE INGRESOS PUBLICOS ARG 5,159,312 1 B 23-May-24 AUSTRALIAN TAXATION OFFICE AUS 4,122,451,332 1 B 23-May-24 CANADA REVENUE AGENCY CAN 147,951,564 1 B 23-May-24 GOVERNMENT OF NORTHWEST TERRITORIES CAN 28,150,543 1 B 23-May-24 GOVERNMENT OF NEWFOUNDLAND AND LABRADOR CAN 54,499,026 1 B 23-May-24 REVENUE QUEBEC CAN 8,201,622 1 B 23-May-24 MADAGASCAR - GENERAL DIRECTION OF TAXES MDG 4,478,113 1 B 23-May-24 MONGOLIA - GENERAL DEPARTMENT OF TAXATION MNG 90,462,825 1 C 23-May-24 USA - INTERNAL REVENUE SERVICE USA (2,295,991) 1 23-May-24 CALIFORNIA FRANCHISE TAX BOARD USA 2,393,055 1 23-May-24 NEW YORK DEPARTMENT OF TAXATION AND FINANCE USA 740,000 1 23-May-24 WISCONSIN DEPARTMENT OF REVENUE USA 650,000 1 23-May-24 ARIZONA DEPARTMENT OF REVENUE USA 892,368 1 23-May-24 ILLINOIS DEPARTMENT OF REVENUE USA 320,000 1 23-May-24 OREGON DEPARTMENT OF REVENUE USA 165,000 1 23-May-24 KENTUCKY DEPARTMENT OF REVENUE USA 150,000 1 23-May-24 SOUTH AFRICAN REVENUE SERVICE ZAF 66,342,167 1 B 23-May-24 NORTHERN TERRITORY REVENUE OFFICE AUS 39,088,031 1 B 23-May-24 STATE OF QUEENSLAND AUS 89,253,319 1 B 23-May-24 STATE OF WESTERN AUSTRALIA AUS 2,049,216,185 1 B 23-May-24 UTAH STATE TAX COMMISSION USA 11,495,035 1 23-May-24 CONSEIL DES INNUS DE EKUANITSHIT CAN 814,562 1 B 23-May-24 INNU NATION (LABRADOR) CAN 2,471,801 1 B 23-May-24 3 / 5 LES INNUS DE UASHAT MAK MANI-UTENAM AND LES INNUS DE MATIMEKUSH- LAC JOHN CAN 4,153,259 1 B 23-May-24 LUTSEL K'E DENE FIRST NATION CAN 296,058 1 B 23-May-24 TLICHO GOVERNMENT CAN 1,530,824 1 B 23-May-24 YELLOWKNIVES DENE FIRST NATION CAN 830,529 1 B 23-May-24 NASKAPI NATION OF KAWAWACHIKAMACH CAN 7,424,417 1 B 23-May-24 GOBI OYU DEVELOPMENT SUPPORT FUND MNG 6,206,186 1 C 23-May-24 ULAANBAATAR CITY MNG 807,199 1 C 23-May-24 UMNUGOVI PROVINCE MNG 51,910,213 1 C 23-May-24 WATER AGENCY GOVERNMENT MNG 101,144 1 C 23-May-24 MINERAL RESOURCES AND PETROLEUM AUTHORITY OF MONGOLIA MNG 221,823 1 C 23-May-24 PRIVATE INVESTMENT PROMOTION AGENCY OF PERU PER 26,300,000 1 B 23-May-24 GEOLOGICAL MINING AND METALLURGICAL INSTITUTE OF PERU PER 2,090,444 1 B 23-May-24 KERN COUNTY TREASURER AND TAX COLLECTOR (CA) USA 8,084,553 1 23-May-24 SALT LAKE COUNTY (UT) USA 43,561,725 1 23-May-24 TOTAL 6,876,726,808 Note B: Amounts in local currency are converted to US$ at the average exchange rate for the year. Note C: Amounts in local currency are converted to US$ at the exchange rate at the time the payments were made. 4 / 5 PROJECT PAYMENTS BY TYPE Company Name RIO TINTO PLC Company Number 00719885 Report Name Extractive Industry Reporting Report End Date 31-Dec-23 Currency USD Project Code Project Name Country Code Payment Type Unit Measure Volume Valuatio n Method Amount Note s Versio n Filing Date ARG01 RINCON - ARGENTINA ARG Tax 0 9,640,374 1 23-May-24 AUS01 PILBARA - WESTERN AUSTRALIA AUS Tax 0 4,393,881,619 D 1 23-May-24 AUS01 PILBARA - WESTERN AUSTRALIA AUS Royalties 0 2,045,564,522 1 23-May-24 AUS01 PILBARA - WESTERN AUSTRALIA AUS Fees 0 1,186,355 1 23-May-24 AUS05 DAMPIER SALT - AUSTRALIA AUS Tax 0 6,939,703 1 23-May-24 AUS05 DAMPIER SALT - AUSTRALIA AUS Royalties 0 2,465,308 1 23-May-24 AUS06 GOVE - AUSTRALIA AUS Royalties 0 32,478,995 1 23-May-24 AUS06 GOVE - AUSTRALIA AUS Fees 0 6,609,036 1 23-May-24 AUS07 WEIPA INCLUDING AMRUN - AUSTRALIA AUS Tax 0 42,632,575 D 1 23-May-24 AUS07 WEIPA INCLUDING AMRUN - AUSTRALIA AUS Royalties 0 86,752,589 1 23-May-24 AUS07 WEIPA INCLUDING AMRUN - AUSTRALIA AUS Fees 0 2,500,730 1 23-May-24 AUS08 WINU - AUSTRALIA AUS Tax 0 (16,015,557) E 1 23-May-24 AUSEXP01 EXPLORATION - AUSTRALIA AUS Tax 0 (22,566,983) E 1 23-May-24 AUSOTH01 HEAD OFFICE / NON-EXTRACTIVE AUSTRALIA AUS Tax 0 (286,901,086) E 1 23-May-24 CAN01 IRON ORE COMPANY OF CANADA CAN Tax 0 207,123,961 1 23-May-24 CAN01 IRON ORE COMPANY OF CANADA CAN Fees 0 14,227,153 1 23-May-24 CAN02 DIAVIK - CANADA CAN Tax 0 22,378,521 1 23-May-24 CAN02 DIAVIK - CANADA CAN Fees 0 9,308,763 1 23-May-24 CAN03 RIO TINTO FER ET TITANE - CANADA CAN Tax 0 2,471,245 1 23-May-24 CAN03 RIO TINTO FER ET TITANE - CANADA CAN Fees 0 814,563 1 23-May-24 MDG01 QIT MADAGASCAR MINERALS MDG Tax 0 950,386 1 23-May-24 MDG01 QIT MADAGASCAR MINERALS MDG Royalties 0 3,527,727 1 23-May-24 MNG01 OYU TOLGOI - MONGOLIA MNG Tax 0 42,912,522 1 23-May-24 MNG01 OYU TOLGOI - MONGOLIA MNG Royalties 0 90,462,825 1 23-May-24 MNG01 OYU TOLGOI - MONGOLIA MNG Bonuses 0 6,206,186 1 23-May-24 MNG01 OYU TOLGOI - MONGOLIA MNG Fees 0 10,127,855 1 23-May-24 PEREXP01 EXPLORATION - PERU PER Fees 0 28,390,444 1 23-May-24 USA01 KENNECOTT UTAH COPPER - US USA Tax 0 7,836,443 F 1 23-May-24 USA01 KENNECOTT UTAH COPPER - US USA Royalties 0 11,379,981 1 23-May-24 USA01 KENNECOTT UTAH COPPER - US USA Fees 0 43,835,344 1 23-May-24 USA02 RESOLUTION COPPER - US USA Tax 0 (18,320,498) F 1 23-May-24 USA02 RESOLUTION COPPER - US USA Fees 0 452,368 1 23-May-24 USA03 US BORAX USA Tax 0 21,045,097 F 1 23-May-24 USA03 US BORAX USA Fees 0 8,084,553 1 23-May-24 USAEXP01 EXPLORATION - US USA Tax 0 (7,998,978) F 1 23-May-24 ZAF01 RICHARDS BAY MINERALS - SOUTH AFRICA ZAF Tax 0 59,445,724 1 23-May-24 ZAF01 RICHARDS BAY MINERALS - SOUTH AFRICA ZAF Royalties 0 6,896,443 1 23-May-24 TOTAL 6,876,726,808 Note D: Project amount includes payments / refunds between entities within tax groups where final payments to government are paid by the head / representative entity on behalf of the tax group. Note E: Project amount includes payments / refunds between entities within tax groups where final payments to government are paid by the head / representative entity on behalf of the tax group. This does not represent an actual refund from the Australian Tax Office. Note F: Project amount includes payments / refunds between entities within tax groups where final payments to government are paid by the head / representative entity on behalf of the tax group. Overall there was a net refund from the IRS in the year.

5 / 5 PROJECT PAYMENT TOTALS Company Name RIO TINTO PLC Company Number 00719885 Report Name Extractive Industry Reporting Report End Date 31-Dec-23 Currency USD Project Name Project Code Amount Version Notes Filing Date RINCON - ARGENTINA ARG01 9,640,374 1 23-May-24 PILBARA - WESTERN AUSTRALIA AUS01 6,440,632,496 1 23-May-24 DAMPIER SALT - AUSTRALIA AUS05 9,405,011 1 23-May-24 GOVE - AUSTRALIA AUS06 39,088,031 1 23-May-24 WEIPA INCLUDING AMRUN - AUSTRALIA AUS07 131,885,894 1 23-May-24 WINU - AUSTRALIA AUS08 (16,015,557) 1 23-May-24 EXPLORATION - AUSTRALIA AUSEXP01 (22,566,983) 1 23-May-24 HEAD OFFICE / NON-EXTRACTIVE AUSTRALIA AUSOTH01 (286,901,086) 1 23-May-24 IRON ORE COMPANY OF CANADA CAN01 221,351,114 1 23-May-24 DIAVIK - CANADA CAN02 31,687,284 1 23-May-24 RIO TINTO FER ET TITANE - CANADA CAN03 3,285,808 1 23-May-24 QIT MADAGASCAR MINERALS MDG01 4,478,113 1 23-May-24 OYU TOLGOI - MONGOLIA MNG01 149,709,388 1 23-May-24 EXPLORATION - PERU PEREXP01 28,390,444 1 23-May-24 KENNECOTT UTAH COPPER - US USA01 63,051,768 1 23-May-24 RESOLUTION COPPER - US USA02 (17,868,130) 1 23-May-24 US BORAX USA03 29,129,650 1 23-May-24 EXPLORATION - US USAEXP01 (7,998,978) 1 23-May-24 RICHARDS BAY MINERALS - SOUTH AFRICA ZAF01 66,342,167 1 23-May-24 TOTAL 6,876,726,808