Rates are set by fiscal year, effective October 1 each year. Find current rates in the continental United States ("CONUS Rates").
The election to be taxed as an S corporation is made by filing Form 2553, Election by a Small Business Corporation. Generally, within 60 days after Form 2553 is filed, the IRS will mail you a determination notice informing you that your election was either accepted or rejected. If accepted, you will also be informed as to when S corporation status will take effect.
Keep in mind, filing Form 2553 is merely a tax election. It does not change the legal status of the business. If your business is incorporated, the incorporation laws of the state of incorporation still apply. If your business is an LLC, the LLC laws in the state of formation still apply.
If you formed an LLC and would like to elect S corporation tax treatment, make the election by filing Form 2553.
File Form 2553 no later than two months and 15 days after the beginning of the tax year the election is to take effect, or at any time during the tax year preceding the tax year it is to take effect. If you file Form 2553, but miss the deadline, S status will be effective for the following year.
Your C corporation is on a calendar year (year ends December 31). You want S status to be effective for tax year 2020. File Form 2553 no later than March 15, 2020 if you want S status to take effect in 2020.
You want S status for 2020. You procrastinate. Form 2553 gets filed after the March 15, 2020 deadline. S status will be effective the following year, 2021.
A corporation or other entity eligible to elect to be treated as a corporation may elect to be an S corporation only if it meets the following eight tests:
Large loans, for example, loans in excess of your stock basis, could be viewed by the IRS as being an investment in stock. Since an S corporation may only have one class of stock, if the IRS deems the loan to be a second class of stock, S status may be revoked.
This code section says that straight-debt shall not be treated as a second class of stock. Straight-debt is defined as any written unconditional promise to pay on demand or on a specified date a sum certain in money if:
Preparing a promissory note with normal lending terms will help in preventing the IRS from considering the loan a second class of stock.