Eamon Quinn: Joe Biden's tax plan puts Ireland and the multinationals back in the frame The sting for Ireland is the US president's proposal to raise the Trump-era minimum tax rate on earnings generated overseas by US companies to 21%. US president Joe Biden and Taoiseach Micheál Martin during a virtual meeting for St Patrick's Day. Mr Biden's new plan could upend the global tax regime that has anchored Irish prosperity since the late 1980s. Picture: Jim Watson/AFP via Getty Images Sat, 10 Apr, 2021 - 06:30 In the thick of a global pandemic, any initiative to overhaul global tax will likely leave most people cold.