Deutsche Bank, Germany's largest lender, says the U.S. might be headed for one of its worst inflationary periods in history, arguing that elevated government spending and loose monetary policy could combine to create conditions similar to prior episodes in the 1940s and 1970s.

Adding to the pressures are some $2 trillion of "excess savings" that consumers have amassed over the past year, when many businesses were closed and travel mostly shut down, according to the report published Monday.

"Consumers will surely spend at least some of their savings as economies reopen," wrote Deutsche Bank Chief Economist David Folkerts-Landau along with Peter Hooper, global head of economic research, and Jim Reid, head of thematic research.. "This raises the very real specter of consumer-driven inflation."

Inflation is closely watched by cryptocurrency investors who view bitcoin as a hedge against dollar debasement.

But bitcoin has also traded at times in sync with risky traditional assets like stocks, and the Deutsche Bank authors warned that when inflation does eventually appear, the Fed might have to react forcefully, which could “create a significant recession and set off a chain of financial distress around the world.”

The warning comes in marked contrast to Federal Reserve Chair Jerome Powell's repeated assurances that elevated inflation readings are probably "transitory," and will settle back over time as the economy recovers from last year's pandemic-induced recession.

“A lack of preparation for the return of inflation is concerning. Even if some inflation today is transitory, it may feed into expectations as in the 1970s,” according to the report. “Even if only embedded for a few months, these expectations may be difficult to contain with stimulus so great.”

Deutsche Bank estimates that legislated stimulus packages have totaled in excess of $5 trillion, or more than 25% of gross domestic product. The U.S. federal deficit is likely to come in at 14% to 15% of GDP in both 2020 and 2021, versus about 10% in 2009.

Around World War II, according to the economists, U.S. deficits remained between 15% to 30% for four years.

"While there are many significant differences between the pandemic and WWII we would note that annual inflation was 8.4% in 1946, 14.6% in 1947 and 7.7% in 1948 after the economy normalized and pent-up demand was released," according to the report.

The current political climate means that jobs growth may be a higher priority in the coming years than keeping inflation at bay.

Unlike in the early 1980s, when then-President Ronald Reagan supported Fed Chair Paul Volcker "putting the economy through a wringer to quell inflation, the problem is today viewed as much less important than unemployment and the broader goals of achieving greater equality in income and wealth," according to the report.

"The Fed's move away from preemptive action in its new policy framework is the most important factor raising the risk that it will fall well behind the curve and be too late to deal effectively with an inflation problem without a major disruption to activity," the authors wrote.