Because of last-minute tax law changes created by the federal “fiscal-cliff” debate, the Oregon Department of Revenue will not begin processing individual income tax returns until Jan. 30, eight days later than originally planned.

The Internal Revenue Service will also begin processing federal tax returns on Jan. 30, according to the IRS, and the state cannot begin processing electronically filed returns until the IRS opens its electronic filing system, according to a news release from the Oregon Department of Revenue.

The American Taxpayer Relief Act, passed by Congress on Jan. 1 and signed by the president a day later, contained tax law changes, according to the IRS, many of which affect 2012 tax returns.