January 1st: First day to contribute to a traditional and Roth IRAs and Simplified Employee Pension Plans (SEP) for the new year.
January 15th: Due date for quarterly estimated taxes for the fourth quarter of the previous year.
March 31st: End of Medicare Part A and Part B General Enrollment Period. Last day to submit claims for eligible medical expenses from the previous year for many flexible spending account (FSA) plans with a use-it-or-lose-it rollover rule.
April 1st: Last day to take first IRA required minimum distribution (RMD) without penalty.
April 15th: Last day to file income taxes or apply for an extension. Also, estimated taxes for Q1 are due. Also, this is last day to contribute to a traditional or Roth IRA, and a HSA for the previous year.
June 30th: Last day to submit a FAFSA application.
July 15th: Two month filing extension deadline for federal taxes, and last day to file income taxes for Americans living abroad. Estimated taxes for Q2 due.
September 15th: Estimated taxes for Q3 are due.
September 30th: Last day to determine beneficiaries after an IRA owner’s death.
Between October 1st and November 1st: Employers announce the upcoming open enrollment period to choose your workplace benefits for the next year.
October 15th: End of six-month filing extension period for federal taxes. Also, extended deadline to contribute to an SEP IRA for the self-employed and self-business owners.
December 15th: Affordable Care Act open enrollment ends.
December 31st: Last day to take RMDs from an IRA, 401(k), and inherited IRAs. Last day to set up most types of retirement accounts so contributions count for the current year. Also, last day for 401(k) contributions, itemized deductions, stocks, and gifts to count for the 2020 tax year.