Numbers to know when you file your 2012 tax return Associated Press Copyright 2013 Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed. Updated 11:14 am, Tuesday, January 22, 2013 Key numbers to know when filing your 2012 tax returns, according to the Internal Revenue Service: —$11,900 for married couples filing a joint return, and qualifying widows and widowers —$5,950 for singles and married individuals filing separate returns —Taxpayers who are 65 or older or who are blind may be eligible for a higher standard deduction. —$78,750 for a married couple filing a joint return, and qualifying widows and widowers EARNED INCOME TAX CREDIT: —Taxed at a top rate of 35 percent in 2012, with the first $5.12 million in value exempted for individual estates and $10.24 million for family estates