The slider below presents a range of proposed climate fund levels. It starts with the $300 billion figure agreed at COP29. The upper bound equates to a fund equivalent to $2.6 trillion, an amount that could be attained if all additional tax revenues generated through global tax reforms were fully allocated to the fund, irrespective of each country's size and economic responsibility.

The slider below lets you select the starting year for calculating a country’s Historical Share of Emissions, which determines its gross responsibility contribution. By default, the year is set to 1850—the earliest point for which data is available. However, you can choose from other key historical reference points, including the turn of the century (1900 and 2000), the post–World War II era (1945), the periods surrounding African independence movements in the 1950s and 1970s, the post–Soviet era after 1991, or major climate milestones such as the 1992 Earth Summit in Rio and the first COP in 1995.

You can now select a country to view its historical share of emissions based on the starting year you chose in the previous stage. You’ll also see how much the country is set to receive, which is calculated using the selected fund size and its fixed vulnerability score, and how much it is expected to contribute, based on its historical emissions and the fund size. The difference between these two amounts determines the country’s net receipt.

By raising additional revenue through measures like curbing cross-border tax abuse and implementing wealth taxes, countries gain greater fiscal sovereignty, enabling them to decide how much to contribute to the Global Climate Fund and how much to retain for domestic priorities. Your selected country has a potential additional tax revenue available equivalent to: