FRANKFURT, Germany (AP) — More than 130 countries have agreed on sweeping changes to how big global companies are taxed, including a 15% minimum corporate rate designed to deter multinationals from stashing profits in low-tax countries.

The deal announced Friday is an attempt to address the ways globalisation and digitalisation have changed the world economy.

It would allow countries to tax some of the earnings of companies located elsewhere that make money through online retailing, web advertising and other activities.

US President Joe Biden has been one of the driving forces behind the agreement as governments around the world seek to boost revenue following the COVID-19 pandemic.

The agreement among 136 countries representing 90% of the global economy was announced by the Paris-based Organization for Cooperation and Economic Development, which hosted the talks that led to it.

The OECD said that the minimum tax would reap some $150 billion for governments.

“Today’s agreement represents a once-in-a-generation accomplishment for economic diplomacy,” US Treasury Secretary Janet Yellen said in a statement.

She said it would end a “race to the bottom” in which countries outbid each other with lower tax rates.

“Rather than competing on our ability to offer low corporate rates,” she said, “America will now compete on the skills of our workers and our capacity to innovate, which is a race we can win.”

The deal faces several hurdles before it can take effect.

US approval of related tax legislation proposed by Biden will be key, especially since the US is home to many of the biggest multinational companies.

A rejection by Congress would cast uncertainty over the entire project.

The big US tech companies like Google and Amazon have supported the OECD negotiations.

One reason is that countries would agree to withdraw individual digital services taxes they have imposed on them in return for the right to tax a part of their earnings under the global scheme.

That means the companies would deal with just the one international tax regime, not a multitude of different ones depending on the country.

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