Oregon has to wait to start processing tax returns, because the IRS is delaying the start of the tax season by eight days. Dennis Thompson, with the Oregon Department of Revenue, says that's because the debate to avoid the fiscal cliff caused last minute changes for the IRS. Normally, processing starts on January 22nd, but this year they won't start processing returns until January 30th. Thompson says you should make sure you include the W-2 forms with your return; because if they're missing it can delay processing of the return.