The Treasury Department on Monday released a one-page report arguing that the Republican tax bill’s cost would eventually be paid for by economic growth, but it triggered backlash from experts who said it contained serious errors and significant assumptions. …

The Treasury report assumes that gross domestic product, the most widely used measure of a country’s economy, would increase by an average of 2.9% annually in the US over the next 10 years.

That rate, taken from President Donald Trump’s proposed budget, is much greater than the 2.2% annual GDP growth rate the Treasury’s Office of Tax Policy expected over that period before Trump took office. The growth rate from the budget assumes not just that the tax bill and some other Trump administration proposals will pass, but that the policies will add nearly a percentage point to the US’s annual GDP growth.