California S-Corp Election Guide: Form 2553, Form 100S, and the $800 Tax

An S corporation is a tax election, not a type of entity. You first create a legal entity, then layer the election on top.

California accepts the federal election without a separate state form. That convenience misleads owners into thinking no state obligations follow.

They do, and they are expensive relative to most states. Budget for the annual minimum tax before you decide anything.

Both a corporation and an LLC can hold an S election. The corporation route is the traditional path and the simpler one. The LLC route requires the entity to be treated as a corporation first. Filing Form 2553 accomplishes that automatically for an eligible LLC.

California tilts this decision in a way other states do not. A newly incorporated corporation is exempt from the minimum franchise tax its first year. That relief has never applied permanently to LLCs. A temporary LLC exemption existed but expired for entities formed after 2023.

That single difference is worth eight hundred dollars in year one. An LLC formed today owes the minimum tax from its first taxable year. A corporation formed today does not. Weigh that against the governance flexibility an LLC provides.

Formation fees are modest, and the recurring taxes are not. Secretary of State fees are kept current there on the official fee schedule. The Franchise Tax Board administers the annual tax separately. Confirm both before you budget.

Two rows drive most of the annual cost. The minimum tax applies in loss years and inactive years alike. The 1.5 percent applies to net income after deducting owner salary. That means the state taxes the same distributions your federal strategy protects.

The entity needs its own employer identification number. Apply only after the Secretary of State approves your formation documents. Using a pending entity name creates mismatches the IRS will flag later. The application is available directly and costs nothing.

Online applications issue the number immediately during business hours. Third party services charge fees for something the government provides free. The responsible party must be an individual with a valid taxpayer identification number. Keep the confirmation letter with your permanent corporate records.

The EIN must appear on Form 2553 exactly as issued. It also drives payroll registration, banking, and state tax accounts. Get it before you attempt any other filing. Sequencing errors here cause weeks of avoidable delay.

Form 2553 is the federal election and the only election you file. It is due within two months and fifteen days of the tax year start. For calendar year entities that generally means March 15. New entities measure from their first day of business instead.

Every shareholder must sign a consent on the form. The entity may have no more than one hundred shareholders. Nonresident aliens, partnerships, and corporations cannot hold shares. Verify all of this before anyone signs.

Missing the deadline does not end the matter. Relief is available within three years and seventy five days of the intended date. That request requires a written reasonable cause statement. File promptly, because delay itself weakens the request.

No. California automatically treats a federal S corporation as a state S corporation. That automatic recognition is confirmed elsewhere on the state tax portal. There is no state election form and no state deadline to miss. Practitioners in other states often assume otherwise.

Automatic recognition does not mean automatic simplicity. California imposes real obligations that begin the moment the election takes effect. The items below apply every year the entity remains active. Missing any of them triggers penalties or suspension.

• File Form 100S annually, due the fifteenth day of the third month
• Pay the greater of 1.5 percent of net income or the $800 minimum
• Make estimated tax payments using California's own quarterly schedule
• File the Statement of Information on your entity's required cycle
• Register with the Employment Development Department after paying wages
• Carry workers compensation coverage once you have any employee
• Add back items California does not conform to, including bonus depreciation

Two conformity issues catch new filers repeatedly. California caps the immediate expensing deduction far below the federal limit. It also does not conform to federal bonus depreciation at all. Both require add backs on the state return.

Setting up a California S corporation is a three step federal and state sequence. Form the entity, obtain an EIN, then file Form 2553 with the IRS. California requires no separate election and provides no separate form. Federal acceptance carries over automatically.

The cost picture is where California differs sharply from other states. Expect the $800 minimum every year after the first, plus 1.5 percent on net income. Corporations get a first year waiver that LLCs no longer receive. Factor that into the entity choice before you file anything.