The DFAS website shut down temporarily last week when thousands of military users logged on in an attempt to access their W-2s and finish their tax filing. Technically the IRS isn't open for business until today so you have time to double-check your numbers and peruse the new tax law changes for 2013.

Some of those laws, probably don't concern most military families.

For example, if you made more than $450,000 in 2013 your tax rate is now 39.6 percent.

However, there are many new rules that may change the amount you owe Uncle Sam.

First, the Recovery Act of 2009 that granted everyone with a child a hefty credit has been extended for five years. Say it with me, whoohoo! There are even larger credits now for households with three or more children.

New deductions have been added too. Including,

- deductions for school teacher expenses

- tuition and fees deduction

- mortgage insurance premiums treated as residence interest

If you moved out of housing last year and bought a new home, you may also qualify for tax credits for purchasing an energy-efficient home or appliance. Did you buy a plug-in electric vehicle? That will earn you a credit as will the purchase of an alternative fuel vehicle.

One of the biggest changes for 2013 come as a result of the U.S. Supreme Court finding the Defense of Marriage Act unconstitutional. Now, any same-sex couple, legally married in jurisdictions that recognize their union, will file as married on their federal tax records, regardless of what state they live in.

The details of all these changes and more are available online at the IRS website, www.irs.gov.

Don't feel like wading though the government lingo and red tape? Military One Source has again partnered with H&R Block to provide free access to the company's online filing tool. Once you register with Military One Source you will have access not just to the program but to tax experts who will answer your questions around the clock.

Happy filing!