European politicians need to "stop talking like accountants and become leaders," Harris Ikonomopoulos, president of the British Hellenic Chamber of Commerce, told CNBC Wednesday.
Greece has a "huge opportunity for growth" despite its current economic crisis, he added.
Rather than raising taxes, Ikonomopoulos believes that the Greek government should impose a low, flat-rate corporation tax to attract investment from abroad.
"Greeks are looking abroad because of over-taxation in Greece," he said."We now have a unique opportunity for investment funds to come in and employ. If we had a minimum flat tax rate, guaranteed for 15 years, you can see the upside."
The Greek parliament will vote on austerity measures Wednesday as protestors taking part in the second day of general strike continue to line the streets of Athens.
The new measures - including budget cuts to the public sector - must be passed by 3 July in order for Athens to receive a second bailout from the European Union and International Monetary Fund, which could be worth up to 100 billion euro ($144 billion), and avoid defaulting on its debts.
The country, which will have to privatize or sell off stakes in state-backed companies to pay back its debts, and that process is proceeding in an "orderly way" Ikonomopoulos added.
The Greek economy will be saved by the private sector, according to Ikonomopoulos.
"The three million workers in the private sector are supporting the public sector," he said. "It’s imperative to cut down on the size of the state and make it efficient."
"Shipping, tourism and agriculture are booming," he added, pointing out that Greek exports are up this year.
Greece needs a new Marshall Plan, to mimic the help given to struggling European countries after World War II, he believes.