· Federal income tax and self-employment tax returns by individuals for calendar year 2013 are due by this date.
· Last day to file an amended federal income tax return (Form 1040X) for calendar year 2010 (unless you received an extension of time to file your 2010 return).
· Last day to file an exemption from Social Security coverage (Form 4361) for most eligible clergy who began performing ministerial services in 2012 (deadline extended if applicant obtains an extension of time to file Form 1040).
· Ministers who have not elected voluntary withholding and self-employed workers must file their first quarterly estimated federal tax payment for 2014 by this date (a similar rule applies in many states to payments of estimated state taxes). Non-minister employees of churches that filed a timely Form 8274 (waiving the church's obligation to withhold and pay Social Security and Medicare taxes) are treated as self-employed for Social Security purposes, and are subject to the estimated tax deadlines with respect to their self-employment (Social Security) taxes unless they ask their employing church to withhold an additional amount of income taxes from each paycheck (use a new Form W-4 to make this request) that will be sufficient to cover self-employment taxes.
· A church must make quarterly estimated tax payments if it expects an unrelated business income tax liability for the year to be $500 or more. Use IRS Form 990-W to figure your estimated taxes. Quarterly estimated tax payments of one-fourth of the total tax liability are due by April 15, June 15, September 15, and December 15, 2014, for churches on a calendar-year basis. Deposit quarterly tax payments electronically using the EFTPS system.