So it turns out that federal spending is important to the economy after all.

As Nelson Schwartz reported in The Times on Monday, a number of manufacturers say they are canceling plans for investing and hiring, in part, because they fear that some $100 billion in budget cuts will take effect in 2013. In all, the law currently calls for $1.2 trillion in automatic spending cuts over 10 years, starting Jan. 1, divided between nondefense programs and defense projects.

Republican lawmakers demanded the cuts last year as part of their brinkmanship over the debt ceiling, and business lobbies have generally supported slashing the deficit. But now that the cuts are imminent, corporate executives seem to have realized that the last thing the economy needs is a large budget cut across the board.

They’re right about that. According to the Congressional Budget Office, the combined impact of the automatic spending cuts plus the scheduled expiration of the Bush-era tax cuts — the so-called fiscal cliff — would cause the economy to contract in the first half of 2013. Some business leaders seem to think the solution is for Congress to act as soon as possible to avert the spending cuts and to extend all of the tax cuts. That would avoid an economic downturn next year, but it would also mean no progress toward long-term deficit reduction.

The best approach is to delay the blow of lower federal spending, thus shielding businesses from a sudden drop in support, and, at the same time, temporarily extend the Bush-era tax cuts for most Americans and let them expire for those making more than $250,000 a year, as President Obama has proposed. That would raise revenue and be a credible step toward long-term deficit reduction, without harming the recovery, because high-end tax increases do not cut deeply into consumer spending.