LONDON — The top economic officials from the world’s advanced economies reached a breakthrough on Saturday in their yearslong efforts to overhaul international tax laws, unveiling a broad agreement that aims to stop large multinational companies from seeking out tax havens and force them to pay more of their income to their governments.
Finance leaders from the Group of 7 countries agreed to back a new global minimum tax rate of at least 15 percent that companies would have to pay regardless of where they locate their headquarters.
The agreement would also impose an additional tax on some of the largest multinational companies, forcing technology giants like Amazon, Facebook and Google as well as other big global firms to pay taxes to countries based on where goods or services are sold, regardless of whether they have a physical presence in that nation.
Officials described the pact as a historic agreement that could reshape global commerce and solidify public finances that have been eroded after more than a year of combating the coronavirus pandemic. The deal comes after several years of fraught negotiations and, if enacted, would reverse a race to the bottom on international tax rates. It would also put to rest a fight between the United States and Europe over how to tax big technology companies.
Rishi Sunak, Britain’s chancellor of the Exchequer, announced the agreement and hailed it as a deal that would make the global tax system“fit for the digital age” and would ensure “the right companies pay the right tax in the right place.”
While the agreement is a major step forward, many challenges remain. Next month, the Group of 7 countries must sell the concept to finance ministers from the broader Group of 20 nations that are meeting in Italy. If that is successful, officials hope that a final deal can be signed by Group of 20 leaders when they reconvene in October.
Garnering wider support will not be easy. Ireland, which has a tax rate of 12.5 percent, has come out against the global minimum tax, arguing that it would be disruptive to its economic model. Some major countries such as China have been quietly tracking the proceedings but are considered unlikely to buy in. Finance officials believe that if enough advanced economies sign on, then other countries will be compelled to follow suit and they plan to exert political pressure on Ireland to join the agreement.
The Biden administration has been eager to reach an agreement because a global minimum tax is closely tied to its plans to raise the corporate tax rate in the United States to 28 percent from 21 percent.
Business lobbyists have warned that doing so will make American companies less competitive than their international counterparts and lead to more offshoring.
Treasury Secretary Janet L. Yellen and other administration officials have said that getting other countries to go along with a base tax rate on overseas profits would make American companies less likely to move their operations to countries with lower taxes.
In a statement, Ms. Yellen described the agreement as “significant” and “unprecedented.”
“That global minimum tax would end the race to the bottom in corporate taxation, and ensure fairness for the middle class and working people in the U.S. and around the world,” Ms. Yellen said. “The global minimum tax would also help the global economy thrive, by leveling the playing field for businesses and encouraging countries to compete on positive bases, such as educating and training our work forces and investing in research and development and infrastructure.”
The Group of 7 delegations, which represent Britain, Canada, France, Germany, Italy, Japan and the United States, negotiated late into Friday to hash out details of how the new tax systems would work and the language in the statement.
France, which had been pushing for tax rate above 15 percent, wanted to ensure that there remains flexibility for the tax to be higher. The United States was pushing European countries to eliminate their digital services taxes, which the administration says unfairly targets American technology companies. France, Italy and Britain have resisted abandoning those taxes until the agreement is finished and in place — a process that could take up to four years.
The joint statement, or communiqué, released on Saturday suggested that the digital taxes would remain in place for now.
“We will provide for appropriate coordination between the application of the new international tax rules and the removal of all digital services taxes, and other relevant similar measures, on all companies,” the statement said.
Bruno Le Maire, France’s finance minister, applauded the agreement as ambitious and said that his country would continue to push for a higher tax rate.
“This agreement will make it possible to tax the digital giants, and for the first time to implement a minimum corporate tax rate to crack down on tax dumping,” Mr. Le Maire said on Saturday. “As talks continue, France will aim for the highest possible minimum tax rate to put an end to the race to the bottom in certain countries.”
Huge sums of money are at stake. A report this month from the EU Tax Observatory estimated that a 15 percent minimum tax would yield an additional 48 billion euros, or $58 billion, a year. The Biden administration projected in its budget last month that the new global minimum tax system could help bring in $500 billion in tax revenue over a decade to the United States.
The agreement signaled a return to comity among the club of wealthy countries, which was fractured in recent years as the Trump administration imposed tariffs on American allies, but has regained its footing since Mr. Biden took office. Last year, the Treasury secretary at the time, Steven Mnuchin, abandoned the talks after negotiations over the digital taxes stalled and President Donald J. Trump prepared retaliatory tariffs against countries that planned to tax American technology companies.
The negotiations regained momentum this year after Ms. Yellen offered new proposals this year that broke the gridlock. She suggested a global minimum tax rate of at least 15 percent and proposed replacing European digital services taxes with a new levy on the world’s largest 100 companies that would be based on where a company sells its goods or services.
Mr. Le Maire said that Ms. Yellen’s involvement was pivotal.
“Let’s be clear, we have someone with whom it’s easy to discuss, easy to build compromises and easy to bridge some gaps between the different nations,” he said.
Despite the breakthrough, completing such a sweeping agreement will not be easy and the threat of a trade war remains if countries keep their digital services taxes in place. The Biden administration said this month that it remained prepared to move forward with tariffs on about $2.1 billion worth of goods from Austria, Britain, India, Italy, Spain and Turkey. However, it is keeping them on hold while the tax negotiations unfold.
Finishing such a large agreement by the end of the year could be overly optimistic given the number of moving parts and countries involved.
“A detailed agreement on something of this complexity in a few months would just be lighting speed,” said Nathan Sheets, a former Treasury Department under secretary for international affairs in the Obama administration.
The biggest obstacle to getting a deal finished could come from the United States. The Biden administration must win approval from a narrowly divided Congress to make changes to the tax code and Republicans have shown resistance to Mr. Biden’s plans. American businesses will bear the brunt of the new taxes and Republican lawmakers have argued that the White House is ceding tax authority to foreign countries.
Representative Kevin Brady of Texas, the top Republican on the House Ways and Means Committee, said on Friday that he did not believe that a 15 percent global minimum tax would curb offshoring.
“If the American corporate tax rate is percent, and the global tax rate is merely half of that, you can guarantee we’ll see a second wave of U.S. investment research manufacturing you hit overseas, that’s not what we want,” Mr. Brady said.