Thomson Reuters has begun requiring multi-factor authentication for efiling tax returns. The company recommended the security measure during tax season but as of May 1 is requiring the technique.

The Internal Revenue Service is offering relief to small employers that wish to claim the Small Business Health Care Tax Credit. The guidance for 2017 and later years applies to those who first claim the credit for 2016 or later years through a Shop Marketplace but do not have marketplace plans available to employees.

Intuit ended tax season with TurboTax unit sales 4 percent higher than in the 2017. A 5-percent decline in desktop sales partially offset a 6-percent rise in online subscriptions, the company said this week.