The extended federal income tax deadline is coming up fast. As you know, the IRS postponed until July 15 the payment and filing deadlines that otherwise would have fallen on or after April 1, 2020, and before July 15. Here's some ways to chip away at your 2019 business tax bill. Retroactive COVID-19 business relief The Coronavirus Aid, Relief and Economic Security (CARES) Act, which passed earlier in 2020, includes some retroactive tax relief for business taxpayers. The following four provisions may affect a still-unfiled tax return — or you may be able to take advantage of them on an amended return if you already filed. Liberalized net operating losses (NOLs). The CARES Act allows a five-year carryback for a business NOL that arises in a tax year...