The Internal Revenue Service opened the 2014 tax filing season Friday by highlighting a growing number of online services at IRS.gov and encouraging Tennesseans to check out a variety of tax benefits, such as the often-overlooked Earned Income Tax Credit.“As Tennesseans start filing their returns now, we hope those who worked any part of last year won’t forget to see if they qualify for the Earned Income Tax Credit,” said IRS spokesman Dan Boone.Workers who earned less than $52,000 last year may qualify for EITC, worth up to $6,044. They can use the EITC Assistant at IRS.gov or their tax software to check eligibility. One-third of the population eligible for EITC changes each year as their personal circumstances change.Last year about 648,000 Tennessee workers claimed $1.6 billion in EITC. Average payments were over $2,400 per tax return.About 3-out-of-4 filers get refunds, and the IRS issues more than 90 percent of these refunds in less than 21 days.