LLC and S-Corp Formation and Tax Election

The comparison people make is not the real one

"LLC or S-Corp" is the question everyone asks and it compares two things that are not alternatives. An LLC is an entity formed under state law that gives you liability separation. S-Corp is a federal tax classification elected with the IRS, and an LLC or a corporation can elect it. So you do not choose between them — you choose an entity, and then separately choose how it is taxed.

The default matters because it is what happens if you do nothing. A single-member LLC is disregarded for federal tax: its profit lands on your personal return and the whole of it is subject to self-employment tax. A multi-member LLC defaults to partnership treatment. Electing S-Corp status changes the tax treatment without changing the entity.

The last row is worth stating plainly because it is a common misunderstanding: the S-election is a tax decision and has no effect whatsoever on your liability protection. That comes from the entity, from maintaining it properly and from not commingling funds.

Filing Form 2553: the deadline, and why it cannot be e-filed

Form 2553 is the election itself. Until the IRS accepts it, your LLC is taxed the default way no matter what your bookkeeping assumes, so the filing is not administrative housekeeping — it is the thing that makes the tax treatment real.

The deadline is the part worth committing to memory: no more than two months and fifteen days after the beginning of the tax year the election is to take effect. For a calendar-year business that is 15 March. You may also file at any point during the preceding tax year, which is the cleaner approach when you already know you want the election. A newly formed entity counts from the beginning of its first tax year, not from the date the state issued the paperwork.

Form 2553 cannot be e-filed. It goes by fax or by mail, and which IRS service centre receives it depends on where your principal business is located. Both the fax numbers and the addresses are published in the form instructions and the IRS does reassign them, so check the current instructions each time rather than reusing a number from a previous filing.

If you fax it, keep the transmission confirmation. That page is your evidence of timely filing, and because the IRS does not acknowledge receipt immediately it is the only proof you hold in the gap. Expect the acceptance notice — CP261 — within roughly sixty days. If nothing arrives, follow it up rather than assuming the election took effect, because discovering it never registered after you have run a year of payroll on the assumption is an expensive way to find out.

Missing the deadline is recoverable more often than people expect. The IRS operates simplified relief for a late S-corporation election where there was reasonable cause for the delay and the entity otherwise qualified throughout, set out in Revenue Procedure 2013-30, and it reaches back well beyond the current year. It requires an explanation of why the election was late, so a candid account of what happened is worth more than a tidy one.

The election is only half the job. An S-corporation must run payroll for its owner-employee, which means Form 941 quarterly, a W-2 at year end, and Form 1120-S annually. Making the election and then paying yourself in distributions alone is the single most common way this arrangement is undone on examination.

When the election actually saves money, and when it costs money

The saving mechanism is specific. Under default treatment your whole profit bears self-employment tax at 15.3% — 12.4% for Social Security up to the annual wage base and 2.9% for Medicare with no ceiling, plus an additional Medicare surcharge at higher incomes. Under an S-election you split profit into a reasonable salary, which bears employment tax, and a distribution, which does not. The saving is the employment tax on the distribution portion.

What that means in practice is that the election is worth roughly 15.3% of whatever you can defensibly take as distribution rather than salary — and nothing at all on the salary itself. It is a percentage of a slice, not a percentage of your profit.

Against that sits real recurring cost: running payroll, filing quarterly Form 941, filing an annual 1120-S, issuing yourself a W-2, and in several states an annual franchise tax or minimum fee that a disregarded LLC does not pay. Below a certain profit those costs exceed the employment tax saved. There is no universal crossover figure, because it depends on a defensible salary for your particular role and on which state you are in, which is why this is worth modelling on your numbers rather than following a threshold someone quoted on a forum.

An S-Corp with no payroll is the most common failure we see. If you elect S-Corp treatment and then take everything as distributions, you have not saved employment tax — you have created an exposure, because the IRS can recharacterise distributions as wages with back tax, interest and penalties.

Reasonable compensation is the whole exercise

Because the saving comes from taking less as salary, the incentive is to set the salary as low as possible. The IRS is entirely aware of that incentive, and reasonable compensation is a well-litigated area.

The standard is what you would have to pay someone else to do your job — judged on duties, experience, time devoted to the business, comparable pay in your industry and location, and what the business can support. It is a facts-and-circumstances test rather than a formula, which is precisely why the percentage rules of thumb circulating online are not a defence.

The consequence of getting it wrong is that distributions are recharacterised as wages, with the employment tax you avoided plus interest and penalties on top. That does not merely remove the saving; it can cost more than never having made the election. Setting the figure defensibly, and documenting how you arrived at it, is the part of this engagement that carries the value.

If you are on a visa or not yet in the US, read this first

Two situations sit outside the standard advice and both are common among Indian founders.

A non-resident alien cannot be an S-Corp shareholder. Eligibility is restricted to US citizens and resident aliens, so if you are a non-resident for tax purposes the S-election is simply unavailable to you, whatever your profit. That does not stop you owning an LLC — it means the LLC will be taxed as a disregarded entity or a partnership, and a foreign-owned single-member LLC carries a separate and serious annual reporting obligation of its own with a substantial penalty for missing it. We handle that case separately because the answer is genuinely different.

Visa status is the other. Forming an entity is not employment, but working in your own business may be, and immigration authorisation and tax classification are decided by different agencies under different rules. Someone on H-1B is authorised to work for a specific sponsoring employer; someone on H-4 without an EAD is not authorised to work at all. We can tell you the tax consequences of a structure. Whether your visa permits you to operate it is an immigration question and needs an immigration attorney, and we will say so rather than guess.

Where this comes from

• IRS — S Corporations: election requirements, shareholder eligibility and filing obligations
• IRS — About Form 2553, Election by a Small Business Corporation, including the filing deadline
• IRS — S corporation compensation: how reasonable compensation is determined
• IRS — Limited Liability Company: default classification and how to change it
• IRS — Self-employment tax: the Social Security and Medicare components and the deduction for half