The S-corporation election is one of the more talked-about tax strategies in dentistry, and also one of the more misunderstood ones.
Plenty of dental practice owners have heard it saves money on taxes. Fewer understand exactly when it works, what it costs to maintain, and when it actually makes your situation worse instead of better.
The core mechanic is straightforward. When your dental practice runs as a sole proprietorship or single-member LLC without an S-corp election, your net profit is subject to self-employment (SE) tax, which covers Social Security and Medicare.
Elect S-corp status and pay yourself a reasonable salary instead, and only the salary portion runs through payroll (FICA) taxes. The remaining profit flows to you as a distribution and avoids them entirely. That gap is where the savings come from.
S-corp election reduces self-employment tax for dental practice owners
The SE tax rate is 15.3% on the first $184,500 of net earnings in 2026 (the Social Security wage base, per the IRS and SSA), then 2.9% on everything above that threshold. For a practice owner taking $400,000 in profit as pure self-employment income, moving to an S-corp with a $150,000 salary saves roughly $10,000 to $12,000 per year in payroll taxes (2026, approximate). That is real money — but it is a long way from the $30,000-plus figures that get thrown around, and the savings shrink as the reasonable salary rises.
The actual savings depend on two variables: how much profit the practice generates, and what salary the IRS considers “reasonable” for a dentist in your specialty, market, and role. You cannot simply set your salary at $1 and pocket the rest as distributions. The IRS scrutinizes S-corp owner compensation specifically because this strategy is well-known.
What counts as a “reasonable” dentist salary in an S-corp?
Reasonable compensation for a dentist-owner is what you would pay a non-owner dentist to perform the same clinical and administrative duties. Industry surveys from the Bureau of Labor Statistics and dental compensation databases put general dentist compensation in the approximate $180,000 to $250,000 range for full-time clinical work in most markets, though specialists earn considerably more. Your salary should reflect your actual role, your hours, your specialty, and your market.
Setting the salary too low is the most common S-corp audit trigger for dental practices. If the practice generates $700,000 in net profit and you pay yourself $60,000, expect scrutiny. A defensible salary sits closer to what your clinical and management duties would cost if you hired someone else to perform them. For most owner dentists, that number lands somewhere between $150,000 and $250,000 depending on specialty and hours worked — and, as the next section explains, there are good reasons to set it higher than the bare minimum.
When the S-corp election makes financial sense for dentists
There is no fixed income threshold where an S-corp election automatically “turns on,” and rules of thumb like “elect once you clear $X in profit” miss the point. The honest analysis compares the payroll tax you would save at a defensible salary against the administrative costs of the structure — typically $3,000 to $8,000 per year for payroll, a separate return, and entity maintenance — and, just as importantly, against where the practice is headed. A practice growing toward added operatories and associate production has a different answer than one at the same profit level winding down toward a sale.
The election also interacts directly with retirement planning. An S-corp owner’s 401(k) contribution capacity is based on W-2 wages, not total profit. A solo 401(k) or SEP-IRA contribution limit ties to earned income, which means setting your salary as low as possible to minimize payroll tax also caps how much you can contribute to your retirement plan. That is why many owner dentists do the opposite of the internet advice: they set W-2 compensation up toward the 401(k) compensation limit ($360,000 for 2026) so profit-sharing and defined benefit contributions can be maximized — the payroll tax cost of the higher salary is often outweighed by the retirement capacity it unlocks. That tradeoff needs to be modeled before electing, not after. Our dental tax planning team can run those numbers for your specific practice.
When the S-corp election works against you
Three situations push dentists away from the S-corp structure. First, practices where nearly all of the profit is fair compensation for the owner’s own clinical work — if a defensible salary consumes the profit, there is little distribution left to save on, and the administrative costs can eat the remaining benefit. Second, dentists who want to maximize retirement contributions through a defined benefit (DB) plan or large profit-sharing 401(k) need a higher salary baseline, which shrinks the distribution bucket and compresses the payroll tax advantage — for these owners the retirement plan, not the payroll tax saving, has to carry the decision. Third, dentists planning to sell their practice in the next two to five years should evaluate carefully: an S-corp asset sale can have different tax treatment than a partnership or sole proprietor sale, and the election can complicate the buyer’s goodwill amortization picture.
How does an S-corp election work with a dental partnership or DSO?
Associate dentists working inside a DSO (Dental Support Organization) on a W-2 basis have no self-employment income and therefore no SE tax to offset. The S-corp election is irrelevant for them. The situation changes if the associate earns 1099 income from any additional work, or when they transition to practice ownership. Partnerships and multi-owner practices require additional analysis because the S-corp election affects all shareholders, and different owners may have different salary levels and distribution ratios.
S-corp election timing and the IRS deadline
To elect S-corp status for the current tax year, Form 2553 must be filed with the IRS by March 15 of that year for existing calendar-year businesses, or within 2 months and 15 days of the entity’s formation date for new entities. Late elections are possible in many cases through IRS relief procedures (Rev. Proc. 2013-30), but they are not guaranteed. If you are considering the election for 2026, the standard window for existing calendar-year entities has passed — but an entity formed this year can still elect within its own 2-month-and-15-day window, late-election relief may be available, and 2027 planning can start now. Work with a dental CPA to confirm timing and eligibility before the deadline.
What does an S-corp actually cost to maintain for a dental practice?
Running an S-corp adds real administrative overhead. You will need a separate business bank account for the entity (already true for any practice), W-2 payroll for the owner-employee processed through a payroll service, quarterly estimated taxes coordinated with your W-2 withholding, and a Form 1120-S filed annually in addition to your personal return. Many states also charge separate S-corp filing fees or franchise taxes. Total annual cost to maintain the structure, including payroll service and CPA fees for the additional return, typically runs $3,000 to $8,000 per year (approximate) for a single-dentist practice.
How to decide if the S-corp is right for your dental practice
The decision comes down to modeling three numbers: current SE tax burden on practice profit, payroll tax burden under the salary you would actually set (including the salary that powers your retirement plan design), and the annual cost of the structure. If the gap between the first two clears the third by a meaningful margin — and the election fits your growth and exit timeline — it makes sense. If it does not, there may be better uses for that money, including retirement contributions that deliver their own tax offset. The answer is different for every practice, which is why this analysis should happen with someone who knows dental practice economics, not just tax law in the abstract.
Core Advisors works exclusively with dental practice owners on the full picture: tax strategy, retirement planning, bookkeeping, and investments all under one roof. If you want to run the S-corp numbers for your practice, or understand how the election interacts with your retirement plan, schedule a consultation with our retirement planning for dentists team to see how everything fits together.
This article is for educational purposes only and does not constitute tax, legal, or investment advice. Figures cited are for the 2026 tax year unless noted, are approximate where labeled, and are subject to change. Consult your tax and financial advisor about your specific situation before acting on any strategy discussed here.
