"We must not scale back the support programs too early and too quickly," Scholz said ahead of a virtual meeting of finance ministers and central bank governors of the world's top 20 economies, adding he would campaign with his G20 colleagues for continued stimulus.
The calculations are likely to fuel a debate in Germany about when Berlin should end massive deficit-spending triggered by the COVID-19 pandemic, and return to the fiscal rules of a debt brake that parliament suspended for 2020 and 2021.
Deputy Finance Minister Bettina Hagedorn said the calculations were only estimates and fraught with uncertainty due to the long time period.
More than 200 trucks a day cross into European Union member Latvia at the Paternieki border point, some of them stuffed with smuggled cigarettes hidden among other cargo.
Ireland, which took in 11.8 billion euros in corporate tax last year, has been accused by rivals of unfairly using tax policy to attract multinationals, which employ around 10% of the Irish workforce.
A deal could reduce Ireland's corporate tax take by between 800 million and 2 billion euros.
Finance Minister Olaf Scholz, the Social Democrat chancellor candidate for next year's federal election, has backed calls to reintroduce a wealth tax in Germany to pay back public debt amassed during the pandemic.
Leaders were looking to salvage the EU's 1.8-trillion-euro ($2.1-trillion) budget and coronavirus recovery package, seen as vital for the continent's battered economies, after it was blocked by Hungary and Poland over provisions linking it to the respect for rule of law.