Pecker is a key witness in the case against the former US president, who is accused of falsifying business records to cover up hush-money payment
The IMF and the European Commission have for years urged Germany to do more to lift domestic demand and imports as a way to reduce global economic imbalances and stimulate growth elsewhere. Since his election, US President Donald Trump has also criticised Germany's export strength.
Germany's current account surplus - which measures the flow of goods, services and investments - will remain the world's largest for the third year running in 2018 at $299 billion, followed by Japan with $200 billion, according to Ifo estimates.
The Netherlands are likely to come in third with a current account surplus of roughly $110 billion while China will not be among the top three surplus countries due to a surge in imports and lower returns from capital held abroad, Ifo said.
"On the other end of the spectrum, the United States is set to remain the country with the largest current account deficit with roughly $420 billion," Ifo economist Christian Grimme said.
Separately, the German finance ministry said on Monday that Turkey's currency crisis poses an additional risk to the German economy on top of trade frictions with the United States and the possibility of Britain leaving the EU without a deal.
The Turkish lira has lost nearly 40 per cent of its value against the dollar this year, hit by a worsening diplomatic rift with the United States and by investor alarm about President Tayyip Erdogan's influence over monetary policy. Germany is the second biggest foreign investor in Turkey.
Ifo said Germany's current account surplus is largely the result of its trade balance: exports are expected to exceed imports by ?265 billion this year.
In the first half of the year, demand for 'Made in Germany' goods was especially strong in other Eurozone countries as well as European Union members outside the single currency bloc. - Reuters
Pecker is a key witness in the case against the former US president, who is accused of falsifying business records to cover up hush-money payment
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