Quarterly estimated tax
Individuals and most owners pay estimated tax four times a year, due
April 15, June 15, September 15, and January 15 of the following year. The June and September instalments are two and three months apart rather than three and three, which is the reason a payment gets missed more often in that stretch than anywhere else in the year.
Corporations follow their own schedule, with instalments due
on the 15th day of the 4th, 6th, 9th, and 12th months of the tax year.
Business returns
- Partnerships (Form 1065) and S corporations (Form 1120-S) are due
the 15th day of the third month after year end — March 15 for a calendar-year filer, moving to the next business day when that is a weekend. This is the date owners most often assume is April.
- C corporations (Form 1120) are due
the 15th day of the fourth month after year end — April 15 for a calendar-year filer.
- Individuals (Form 1040) are due
April 15.
An extension extends the filing date, not the payment date. Tax owed is still due on the original deadline, and interest runs from that date whether or not an extension was filed. An extension filed with no payment behind it prevents the failure-to-file penalty and does nothing about the rest.
Extensions
- Partnerships and S corporations — Form 7004 gives
six months, to September 15.
- C corporations — Form 7004, to October 15 for a calendar-year filer.
- Individuals — Form 4868 gives
six months, to October 15.
Information returns
- W-2 to employees and to the Social Security Administration — both due
January 31. There is no longer a later date for the government copy than for the employee copy.
- Form 1099-NEC for non-employee compensation — due
January 31 to both the recipient and the IRS.
- Form 1099-MISC — to recipients by January 31; to the IRS by
February 28 on paper or March 31 filed electronically.
- Schedule K-1 goes out with the entity return, which is why a late 1065 or 1120-S makes every owner’s personal return late as well.
Florida
- Sales and use tax, Form DR-15. Returns and payment are due
on the 1st and late after the 20th of the month following the collection period. Filing frequency — monthly, quarterly, semi-annual, or annual — is set by the Department based on your tax collected, and it changes as a business grows.
- Tangible personal property, Form DR-405. Due
April 1 to the county property appraiser. The
$25,000 exemption is secured by filing; a business that stops filing because it is “under the exemption” is the business that loses it.
- Reemployment tax, Form RT-6. Quarterly, due the month after each quarter ends
and late after the last day of that month.
- Annual report to the Division of Corporations. Due
May 1. It is not a tax filing and it is not something we file for you by default — ask if you want it handled. Missing it carries a flat late fee and, left long enough, administrative dissolution.