Although the Chamber backs a permanent extension of all the current tax rates under the 2001 and 2003 laws, the group still "strongly supports this legislation."
All votes on or in relation to the tax issue, including votes on cloture on the motion to concur with the House amendment, will be included in the Chamber's "How They Voted" scorecard.
The Senate has scheduled a cloture vote at 3 p.m. Monday on the legislation that extends the Bush-era income tax cuts for two years, a reduction in payroll taxes and a 13-month extension of unemployment benefits.
House Democrats who expressed opposition to the bill have said they will evaluate the Senate bill and determine whether they want to make changes.
House and Senate Democratic leadership are aiming to complete their lame-duck session work by Dec. 17.