RALEIGH A far-reaching proposal by Republicans in the state Senate would slow government spending and affect the wallet of every North Carolinian as it slashes income tax rates and raises the cost of food, prescription drugs and more than 100 tax-exempt services.

It shifts the tax burden to consumption rather than income, a move that will disproportionately affect low-income taxpayers and families. A married couple with two children making $30,000 a year would pay an estimated $1,000 more in taxes each year, according to a calculator on a political website designed to support the plan. By contrast, a single taxpayer making $200,000 would get a $6,000 break.

Under the proposal: The state’s 7.75 percent personal income tax rate for the top bracket would gradually drop to 4.5 percent over three years, and likewise the 6.9 percent corporate income tax would fall to 6 percent. The estate tax, paid by only the wealthiest taxpayers in 2010, would be eliminated, and the business franchise tax would see a 10 percent reduction.