Changing how retirement savings are treated is one of the changes that lawmakers want to include in the end-of- year spending bill.

Congress was expected to mostly not take action on taxes in the omnibus bill.

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The tax breaks will not be extended.

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This is the first thing. The child tax credit is not going to be expanded.

Most parents get a tax credit of up to $2,000 per year for each of their kids. For half of President Biden's first year in office, there was a monthly benefit of $300 for every young child and $250 for every child between the ages of 6 and 17.

The expansion was seen as a huge success by Democrats, some Republicans and many social policy experts. When the expanded benefits ended, child poverty went up by 41 percent, meaning 3.7 million more children were living in poverty in the first month after the benefits ended.

Congress is not going to expand the child tax credit.

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There are two Companies will not be able to immediately deduct research and development.

In order to encourage innovation, the federal government allows companies to take a tax deduction for spending on research and development, even if some pro-tax advocates say that the money a company spends researching, say, new packaging materials for its products doesn't do much to advance society as a whole

Congress made the R&D benefit less generous in the major tax bill it passed last year. The law states that companies will have to deduct their research expenses over a period of five years instead of one year at a time.

Corporations tried to stop the change from taking effect. The R&D Coalition, led by major companies including Amazon, Ford and Microsoft, sent letters to Congress repeatedly, saying that the change would stifle job growth and put the US at a competitive disadvantage with China.

In a nonbinding vote in May, senators from both parties voted to keep the full deduction in place. The idea didn't make it into the omnibus bill.

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There are three. Big corporate expenses will be treated differently by the tax law.

A bakery buying a big new oven is an example of a company investing in a big asset that the business expects to use for a long time.

The company used to deduct the cost of the asset from its taxes over the course of many years. The bonus depreciation allowed companies to deduct the full expense immediately, a move that companies loved because they would rather have a tax cut now than later.

Proponents of encouraging companies to invest in their businesses said it was good for the economy, while opponents said it was a handout to corporations.

The benefit will be phased out in three years. The provision was not touched this year. Next year,bonus depreciation will drop from the full cost of the asset to 80 percent, and by 2027, the bonus will be gone altogether, meaning companies will have to spread the depreciation out over many years.

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There are four. The companies will not be able to deduct as much interest expenses.

Corporate tax bills could be affected by this provision in the tax law.

Companies that take on debt and then pay interest on it can deduct those interest payments from their taxes. The cap on the amount of interest expenses companies can deduct was set in the law that year.

The change is expected to cost corporations billions of dollars.

When Congress passed the Trump-era tax cuts, many thought that the temporary provisions would be extended so that the law would be more costly and generous to businesses. The first test of that expectation was this week, and it looks like Congress isn't budging. The tax cuts for businesses and families are set to end in the next few years.

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