Kansas Disaster Tax Relief Assistance Act - Extends to businesses and individuals in certain Kansas counties declared by the President as major disaster areas under the Robert T. Stafford Disaster Relief and Emergency Assistance Act (FEMA-1699-DR, as in effect on the date of enactment of this Act) by reason of severe storms and tornados beginning on May 4, 2007, provisions of the Internal Revenue Code allowing: (1) suspension of certain limitations on personal casualty losses; (2) an extension of the period for replacing damaged property without recognizing gain; (3) an employee retention tax credit for affected businesses through 2007; (4) 50% bonus depreciation for affected businesses; (5) increased expensing of small business assets; (6) increased expensing of demolition and cleanup costs; (7) extended net operating loss carryback periods for losses attributable to storms and tornadoes and for public utility property disaster losses; (8) relaxed income verification requirements for tenants in low-income rental projects; and (9) penalty-free withdrawals and loans from individual retirement accounts and other tax-exempt pension plans.