Estate Tax and Extension of Tax Relief Act of 2006

[AI summary unavailable — showing source text] Estate Tax and Extension of Tax Relief of 2006 - Amends the Internal Revenue Code to restore the unified estate and gift tax exclusion after 2009, phase in an increase of such exclusion to $5 million in 2015, and lower the estate tax rate. Extends through 2007 various tax provisions relating to business investment and economic development, education, research, health care, environmental remediation, and investment in the District of Columbia, Puerto Rico, and American Samoa. Revises the system of tax incentives for investment in New York Liberty Zone property. Modifies tax administration provisions relating to awards for whistleblowers, frivolous tax filings, authority of the Internal Revenue Service to disclose tax return information, and refund rules for aviation kerosene. Authorizes the issuance of tax-exempt zone academy bonds and rural renaissance bonds. Allows expensing of mine safety equipment and a tax credit for mine rescue team training costs. Allows a taxpayer election to deduct certain gain from timber sales. Suspends until 2008 the disallowance of the tax deduction for business travel expenses of a spouse. Surface Mining Control and Reclamation Act Amendments of 2006 -…