Around this time of year, many people have filed and forgotten about their tax returns. But you could get an abrupt reminder in the form of an IRS penalty. The IRS will consider any reason that establishes that you were unable to meet your federal tax obligations despite using “all ordinary business care and prudence” to do so. Frequently cited reasons include fire, casualty, natural disaster or other disturbances. The agency may also accept death, serious illness, incapacitation or unavoidable absence of the taxpayer or an immediate family member.

Each year, the IRS sends millions of letters and notices to taxpayers to request payment of taxes, notify them of a change to their account or request additional information. The notice you receive normally covers a very specific issue about your account or tax return. Each letter and notice provides specific instructions explaining what you should do if action is necessary to satisfy the inquiry.