So You Elected S Corporation Status. Now What? A Tax Planning Checklist for Small Business Owners

Nov 2

8 min read

Making the S Corporation election can save you thousands in taxes—but only if you know what to do next.

One of the most common situations I encounter at Casler Financial is a small business owner who has recently elected to be taxed as an S Corporation but isn't entirely sure what that means for their business.

Maybe their accountant recommended it. Maybe they heard from another business owner that becoming an S Corporation would save them money. Or perhaps they researched it themselves and decided to make the election.

Whatever the reason, they've taken the first step toward potentially reducing their tax burden.

But here's what many business owners don't realize: Making the S Corporation election is just the beginning.

There are several important steps that need to happen afterward to ensure you're operating correctly, complying with IRS requirements, and actually taking advantage of the tax-saving opportunities available to you.

Whether you made your S Corporation election in 2026, have been operating as one for years, or are considering making the switch in the future, here's what you should know.

1. Make Sure Your S Corporation Election Is Official

First things first: Have you received confirmation from the IRS that your S Corporation election was accepted?

Filing Form 2553 is how an eligible business elects to be taxed as an S Corporation, but submitting the form doesn't automatically mean everything is finalized.

You'll want to:

Confirm that the IRS has accepted your election.
Keep a copy of your S Corporation acceptance letter.
Make sure your business has an Employer Identification Number (EIN).
Maintain your state business registration and organizational documents.

It's also important to understand that an S Corporation is a tax classification, not a separate type of business entity. Many S Corporations begin as LLCs and elect to be taxed as S Corporations while remaining LLCs under state law.

This distinction can be confusing, especially for business owners who are making the transition for the first time.

2. Pay Yourself a Reasonable Salary

This is one of the biggest areas where I see new S Corporation owners run into trouble.

When you operate as a sole proprietor or a single-member LLC taxed as a sole proprietorship, you generally pay self-employment taxes on your net business earnings.

An S Corporation works differently.

If you're a shareholder who actively performs services for your S Corporation, you generally need to pay yourself reasonable compensation through payroll before taking profit distributions.

Your salary is subject to applicable payroll taxes, including Social Security and Medicare taxes.

However, qualifying S Corporation profit distributions generally aren't subject to self-employment tax.

That's where much of the potential tax savings comes from!

But you can't simply pay yourself a tiny salary and take the rest of the money as distributions.

The IRS expects your compensation to be reasonable based on factors such as:

The type of work you perform.
Your experience and qualifications.
The number of hours you work.
Your responsibilities within the business.
What someone performing similar work would typically earn.

A common mistake: Business owners elect S Corporation status, continue transferring money from their business account to their personal account as they always have, and never establish payroll.

Unfortunately, this can create significant problems at tax time, including potential back payroll taxes, penalties, and interest.

If you made an S Corporation election for 2026 and haven't started paying yourself through payroll, now is the time to address it.

3. Establish an Accountable Plan

Here's a tax-saving opportunity that many S Corporation owners overlook entirely.

An accountable plan is an arrangement that allows your S Corporation to reimburse you for qualifying business expenses you've paid personally.

For example, perhaps you:

Use your personal vehicle for business travel.
Work from a dedicated home office.
Pay certain business expenses with personal funds.
Use your personal cell phone or internet service for business purposes.

Rather than simply absorbing these expenses personally, your S Corporation may be able to reimburse you under a properly established accountable plan.

When the IRS requirements are met, these reimbursements are generally deductible to the corporation and aren't treated as taxable wages to you.

That's a potential win-win!

However, accountable plans have specific rules. Expenses must have a legitimate business purpose, be properly substantiated, and meet applicable reimbursement requirements.

For home office reimbursements, additional calculations and documentation may be necessary.

My recommendation: Don't wait until tax preparation time to start thinking about these expenses. Establish your reimbursement procedures early and keep good records throughout the year.

4. Understand the Difference Between Payroll and Distributions

Another common source of confusion is how S Corporation owners can take money out of their businesses.

Generally, there are two primary ways an owner who works in the business receives money:

W-2 wages: Compensation for the work you perform, processed through payroll and subject to applicable employment taxes.

Shareholder distributions: Money distributed to you as an owner, generally not subject to payroll taxes when properly classified.

Distributions aren't automatically tax-free, though. Their income tax treatment depends on factors including your stock basis and the corporation's tax history.

It's also important to understand that S Corporation shareholders are generally taxed on their share of business income whether or not that income is distributed.

This means you could owe income taxes on business profits even if you leave the money in your business bank account.

If you have multiple shareholders, distributions also need to be handled carefully to preserve the corporation's S Corporation eligibility.

Good bookkeeping and thoughtful tax planning make a big difference here.

5. Explore Retirement Planning Opportunities

One of my favorite conversations to have with business owners involves retirement planning.

Depending on your situation, your S Corporation may be able to help you save for retirement while reducing your current tax liability.

Some options worth exploring include:

SEP IRA: Often relatively simple to establish and administer, with employer contributions based on eligible compensation.
Solo 401(k): Potentially attractive for business owners with no eligible employees other than themselves and, in some cases, their spouse. These plans can allow both employee deferrals and employer contributions.
Traditional 401(k): May be appropriate for businesses with employees or owners looking for additional retirement benefits.

The right option depends on your compensation, business profits, employees, age, and retirement goals.

One important detail: S Corporation retirement contributions are generally calculated using eligible W-2 compensation, not shareholder distributions.

This is another reason reasonable compensation and retirement planning should be considered together.

And don't assume you can wait until April to make every retirement planning decision.

Some elections, salary deferrals, and plan establishment requirements have earlier deadlines.

6. Don't Forget About Health Insurance

Health insurance is another area where S Corporation owners are often surprised by the rules.

If you own more than 2% of your S Corporation, your health insurance benefits are generally treated differently than those provided to regular employees.

For example, qualifying health insurance premiums paid or reimbursed by the corporation generally need to be included in your Form W-2 wages for income tax purposes, although they may be excluded from Social Security and Medicare wages when the requirements are met.

You may then qualify for a self-employed health insurance deduction on your personal income tax return.

The important part is making sure everything is handled correctly through payroll and reported properly on your W-2.

This is especially worth reviewing before the final payroll of the year.

7. Keep Your Business Finances Separate

Even though you may be the sole owner of your business, your S Corporation needs accurate financial records.

That means maintaining separate business banking and keeping personal expenses out of your business accounts whenever possible.

At a minimum, you should be able to produce:

A current Profit & Loss Statement.
An accurate Balance Sheet.
Records of shareholder contributions and distributions.
Documentation of loans between you and the business.
Records of major equipment purchases and other assets.
Payroll records and tax filings.

I frequently meet with business owners who are doing a great job generating revenue but haven't kept their bookkeeping up to date.

Unfortunately, that makes proactive tax planning much more difficult.

You can't make informed tax decisions if you don't know how much money your business is actually making.

8. Plan for Taxes Before December 31

One of the biggest benefits of working with a tax advisor throughout the year is having an opportunity to make decisions before the tax year ends.

Once December 31 passes, many valuable tax-planning opportunities are no longer available for that year.

Depending on your circumstances, year-end planning might include:

Reviewing reasonable compensation and payroll.
Evaluating retirement plan contributions.
Reviewing accountable plan reimbursements.
Considering legitimate business equipment purchases.
Evaluating health insurance and employee benefits.
Reviewing shareholder distributions and basis.
Estimating federal and state income tax liabilities.
Adjusting tax withholding or estimated payments.
Evaluating the Qualified Business Income (QBI) deduction.

For Oregon business owners, there may also be additional state and local tax considerations worth reviewing.

The goal isn't simply to find more expenses to deduct. It's to make thoughtful business decisions while taking advantage of the tax benefits available to you.

Remember, spending a dollar just to save a fraction of that amount in taxes isn't necessarily good financial planning!

9. Know Your S Corporation Filing Requirements

An S Corporation also comes with additional tax filing responsibilities.

Most S Corporations must file an annual federal income tax return on Form 1120-S, even though the business generally doesn't pay federal income tax at the corporate level.

Instead, income and other tax items generally pass through to shareholders on Schedule K-1.

For calendar-year S Corporations, the federal return is generally due March 15, or the next business day when that date falls on a weekend or legal holiday.

You may also have:

State business income or excise tax filing requirements.
Quarterly payroll tax returns.
Annual W-2 and W-3 reporting.
State payroll and unemployment reporting.
Local business tax filing obligations.

These additional responsibilities mean that electing S Corporation status isn't necessarily the right decision for every business.

The potential tax savings should outweigh the additional costs of payroll, bookkeeping, tax preparation, and compliance.

Is S Corporation Status Right for Your Business?

If you haven't made the election yet, I encourage you to evaluate the numbers before jumping in.

An S Corporation can be a wonderful tax-planning tool for a profitable small business, but it isn't a one-size-fits-all solution.

The amount of profit your business generates, your reasonable compensation, your future plans, and the additional administrative costs all play a role in determining whether the election makes financial sense.

At Casler Financial, we help business owners understand these considerations so they can make informed decisions rather than simply following advice they've heard from someone else.

Already an S Corporation? Let's Make Sure You're Getting the Benefits.

If you elected S Corporation status for 2026, this is an especially important time to review your business finances.

I've worked with business owners who were excited about the potential tax savings of an S Corporation but didn't realize they needed to establish payroll, implement an accountable plan, or consider retirement contributions.

Unfortunately, some of these missed opportunities can't be fully corrected after the year is over.

That's why Casler Financial is offering a 2026 S Corporation Year-End Tax Review for $1,000 to our current clients.

During this review, we'll:

Review your year-to-date Profit & Loss Statement and business financials.
Evaluate your shareholder salary and distributions.
Estimate your 2026 federal and Oregon income tax liabilities, as applicable.
Identify potential tax-saving strategies that may be implemented before December 31.
Review retirement contribution opportunities and other deductions.
Discuss payroll, bookkeeping, and compliance concerns.
Meet via Zoom to discuss our findings and recommended next steps.

You'll leave with a clearer understanding of where you stand and an actionable list of steps to help finish the year strong.

This review is optional and separate from annual tax preparation fees.

Whether you're in your first year as an S Corporation or you've been operating as one for several years, having an experienced tax professional review your situation can help you avoid costly mistakes and identify opportunities you may have overlooked.

Ready to make the most of your S Corporation election?

Contact Casler Financial at www.caslerfinancial.com to inquire about a year-end tax review.

Because making the S Corporation election is only the beginning. Making it work for you is where thoughtful tax planning comes in.

Casler Financial provides tax preparation, tax planning, and IRS representation services for individuals and small business owners in Oregon and beyond.

This article is intended for general educational purposes and does not constitute individualized tax advice. Tax laws and filing requirements vary based on your circumstances.