The basics of S corporations — and the pitfalls for small businesses

Electing to establish an S corporation could unlock the tax benefits enjoyed by millions of small business owners — as long as financial advisors and clients avoid some pitfalls.

Those include the ramifications of filing for deductions on the pass-through entity's so-called qualified business income, the requirement of one single class of stock for the company's equity and the implications of the S corp holding real estate, according to Tal Binder, CEO of Gelt. Binder's firm works with high net worth clients and business owners through certified public accountants and artificial intelligence-powered tax services.

The caveats of S corp classification

For advisors and their clients, the S corp entity classification — named after Subchapter S of the Internal Revenue Code as a "Subchapter S corporation" or a "Small Business Corporation" — represents an opportunity with some tradeoffs. 

"Instead of thinking about it as just a tax structure, think about it as a tool — it's a tool in the toolbox when you're doing tax planning or tax strategy," Binder said in an interview. "The S corp has a lot of tax benefits. It just becomes more complicated as you dig into the specifics and the numbers."

Business owners and their advisors have likely run into those challenges in any number of situations — Binder noted that professional services firms such as a small wealth management company usually make the best candidates to be S corporations. The entity classifications of registered investment advisory firms affect industry M&A deals, and S corporations come in handy for clients who, for example, may be elite college athletes seeking tax savings on their "name, image and likeness" payments.

Most service-based businesses do elect to be S corporations, according to Miklos Ringbauer, the founder of Los Angeles-based tax firm MiklosCPA. However, state tax rules can alter the equation significantly, he noted, citing how California charges a flat annual duty of $800 per year for limited liability partnerships regardless of their profit, compared with a 1.5% rate on the net income generated by S corporations.

"You have to understand the state rules first — before you look at tax structure," Ringbauer said in an interview. "Where we shine as tax professionals is providing that value, that guidance to the taxpayers, the investors to make the right choices, to help them to decide what is the best, optimized tax structure for their operation."

READ MORE: 24 tax tips for self-employed clients

History to of S corporations

And tax pros have been doing so for decades.

Almost 70 years ago, small business owners gained the exemption from double taxation on corporate income flowing to their personal returns to the IRS, so long as they are domestic corporations, maintain a limited number and type of shareholders and have one class of stock. Today, there are about 5 million S corporations, according to the S Corporation Association, a business association and advocacy group. Before a recommendation by President Dwight Eisenhower's Republican administration passed through Congress with the support of Harry Byrd, a Democrat from Virginia who was chairman of the Senate Finance Committee, small business owners faced "an oppressive level of tax," a history on the group's website stated.

"How significant was the creation of subchapter S?" it asked. "Consider that in 1958, the top income tax rate was 52% for corporations and 91% for individuals. That means dividends paid by a C-corporation to a high-income shareholder faced an effective tax rate of 96% Even a shareholder with median family income faced an effective federal tax of more than 60%."

READ MORE: Business entities affect taxes and M&A — how RIAs weigh the choice

Potential downsides to S corp entities

The savings to the owners of S corporations add up in the right circumstances, but laws and individual tax implications could call for a sole proprietorship, partnership, limited liability company or a C corporation as a better fit.

In the case of a pass-through business tapping into the deduction for qualified business income that started with the Tax Cuts and Jobs Act in 2017, the S corporation could be a limiting factor based on the fact that the owner's direct W-2 salary is likely to be lower in that situation, Binder noted. For some businesses that have a 401(k) or profit-sharing plan, the S corporation owners' maximum tax-advantaged contribution can only rise to the level of their personal salary.

As another caveat to the S corporation, certain RIAs launch when advisors team up, but one of the advisors may bring a much more substantial base of clients to the business. That would suggest that one of the owners should have more control of the firm than the other, even if they each own half of the RIA, Binder said. They couldn't set up the business that way as an S corporation that can only have one class of stock, though.  

"It doesn't make sense, because you started it and built it for many, many years," he said. "That might disqualify the S corp, so it's not best in those cases."

He brought up the additional problematic use of the structure with the idea of an S corporation RIA holding the building housing the business in the same entity, which is "the right approach" from the perspective of the general tax savings for real estate assets but "in the vast majority of cases not beneficial to you," Binder said. The real estate could bring higher payments to Uncle Sam for an S corporation, based on the rules for tax basis and mortgage financing.

An LLC or LLP structure also provides more flexibility than an S corporation for transferring the real estate asset out of the business and into the client's personal holdings without generating a taxable event, Ringbauer noted. From the perspective of a startup company that must take out heavy loans for capital expenses while incurring business losses in the first few years after launch, the S corporation could further cap the level of deductions — far below the amount available to an LLC or LLP, he said.

READ MORE: 25 tax tips for RIA M&A deals and other small business sales

Don't go it alone on business-entity decisions

Unfortunately, many business owners attempt to choose their entity based on a simple online search or even a question to a public chatbot, according to Ringbauer.

"There's a lot of incorrect information out there, which would result in incorrect guidance on how to treat stuff," he said. "It's a personal preference, but if it is properly guided, then the individuals who are starting the business will be able to make the right choice."

In that vein, advisors who might otherwise avoid any mention of tax-related topics that fall outside their expertise should engage a local certified public accountant or enrolled agent "just to make sure that everything is correct" before the client fills out IRS Form 2553 electing to be treated as an S corporation, Binder said.

"I'd highly recommend the wealth manager to partner with a competent tax professional or CPA firm," he said.