Some people hold on to their money; some don’t. (Ann Telnaes/The Washington Post)

Federal tax returns and many states’ tax returns are due today. All of the work necessary to comply with the tax code requires an average of 13 hours for each taxpayer. If you need a few more hours, some tax offices and post offices in the District, Maryland and Virginia have extended hours today. For more answers to questions about taxes, read this column by Michelle Singletary. Keep reading for more coverage from the Post.

Presidential tax returns | Obamas report their income declined in 2012

President Obama and first lady Michelle Obama reported paying $112,214 in taxes last year on $608,611 in adjusted gross income, for an effective federal income tax rate of 18.4 percent, the White House announced Friday . . .

The Obamas’ income marks a decline from 2011, when the couple reported adjusted gross income of $789,674 in 2011 and about 20 percent in federal taxes. The president earns a salary of $400,000, while the first lady receives no pay.

Poll | 8 in 10 believe in paying as little as possible

Eighty-five percent of Americans — and 86 percent of registered voters — say they approve of people “doing everything within the law to lower their taxes.” Nearly six in 10 say they “strongly” approve of doing all you can to pay as little as possible. Those numbers are remarkably consistent across party lines, with 90 percent of self-identified Republicans expressing that view, as well as 83 percent of Democrats and 82 percent of independents.

Technical difficulties | TurboTax goes offline before Tax Day

The Web site was intermittently unavailable for some customers between 6:40 and 7:50 p.m. Sunday, TurboTax spokesperson Ashley McMahon said. The problem was caused by a “configuration setting” that needed to be adjusted to accommodate traffic, she said.

“We’ve resolved all the issues and we apologize for the inconvenience caused to customers,” she said.

Wonkblog | Taxes in five charts

Ezra Klein offers five reasons not to complain about paying taxes this year, beginning with the fact that during the past few years, taxes have been very low relative to the economy.