Americans on average will have to work 102 days, three days longer this year than in 2010, to pay their total tax bill — federal, state and local — for the year.

Tax Freedom Day will be April 12, according to the Washington-based Tax Foundation, compared with April 9 in 2010. Iowans will be able to celebrate Tax Freedom Day on April 6, two days later last year.

Each state has its own Tax Freedom Day because residents of different states pay different amounts of state and local taxes and their federal tax payments can vary dramatically.

Because of modest incomes and low state and local tax burdens, Mississippi was the first state in the nation to celebrate its Tax Freedom Day, after only 85 days, on March 26. Connecticut will be the last in the nation to observe Tax Freedom Day, on May 2, with 122 days required for that state’s taxpayers to earn enough money to pay the year’s tax total.

Tax Freedom Day does not include payment for the federal deficit. To do that, the average American would have to work an additional 41 days — or until May 23 — to pay their tax and deficit obligation.

“Tax Freedom Day 2011 is later than last year largely because of income changes rather than statutory tax law changes,” said Kail Padgitt, Tax Foundation staff economist. “As the economic recovery continues, individuals’ rising income pushes them into higher tax brackets. Also, corporate tax revenue has also seen a resurgence.”

Although income increases are the main reason for the later Tax Freedom Day, several tax law changes are also partly to blame. The federal estate tax has returned after a one-year repeal, this time at a rate of 35 percent and with an exemption of $5 million.

In addition, taxes associated with the Patient Protection and the Affordable Care Act continue to be phased in. Only taxes that will be collected during 2011 count in the Tax Foundation tally.

In 2000, Tax Freedom Day was May 1, the latest date ever. A string of tax cuts between 2001 and 2003 pushed Tax Freedom Day up by two weeks.