The advisors see Germany's economy shrinking by 0.2% in 2023, versus the official forecast of a 0.4% contraction, a person familiar with their annual report told Reuters on Tuesday.
The economic advisory council is also slightly more optimistic about 2022 in its annual report, set to be released on Wednesday and first reported by Spiegel weekly.
The advisors predict 1.7% growth, compared with the government's forecast for 1.4%, based on unexpected third-quarter growth despite inflation and energy supply concerns.
Inflation is expected, on average, to hit 8% this year, and exceptionally strong price increases are on the way in 2023, the advisors said, warning that inflation's effect on consumers' purchasing power was a reason for the looming recession.
A German newspaper reported on Monday that the advisors will recommend the government raise taxes on the wealthy to help finance the multibillion-euro relief packages it has agreed to fight the energy crisis.
The top income tax rate should be raised or an energy solidarity tax imposed on high earners, the advisors said in their annual report, according to the Sueddeutsche Zeitung.
Such measures would "increase the accuracy of the overall package and signal that the energy crisis must be overcome with solidarity", Sueddeutsche Zeitung quoted the annual report as saying.
(Reporting by Rene Wagner and Andreas Rinke; Writing by Miranda Murray; Editing by Rachel More and Susan Fenton)
