A dentist’s guide to tax season

While his case involved tax evasion, most dentists lose thousands to the IRS without breaking a single law. How? By overpaying taxes they could’ve legally avoided—just because they weren’t taking advantage of tax-saving opportunities.

And let’s be real: tax planning isn’t second nature when you’re running a busy practice. No one gave you a playbook on managing business taxes, tracking expenses, maximizing deductions, or dealing with depreciation.

Dental school trained you to diagnose patients—not navigate tax codes. But just like an untreated cavity can turn into a costly root canal, small tax missteps—like missing a quarterly payment or overlooking key write-offs—can snowball into expensive consequences.

Without a plan, you could be handing over way more than necessary, year after year.

The good news? You don’t need to be a tax expert to keep more of what you earn.
With tax season around the corner, now’s the time to take control.

This guide will walk you through everything you need to know—your tax obligations, deductions, and strategies to minimize your bill—so you can stay compliant and keep more money in your pocket.

Your tax obligations as a dentist

As a dental practice owner, your tax responsibilities go beyond just filing an annual return. You’re running a business, which means multiple tax liabilities come into play, each with its own set of rules, deadlines, and financial implications.

Ignoring or mismanaging any of them could lead to penalties, audits, or paying more than necessary. Let’s break down the key taxes you need to stay on top of:

1. Federal income tax

The U.S. has a progressive tax system, meaning the more you earn, the higher your tax rate. For 2025, federal tax brackets range from 10% to 37% based on taxable income. Your business structure also plays a role:

• Sole proprietorships, partnerships, and S-corp: Your business income is taxed as personal income.

• C corporation: Pay a flat 21% corporate tax. However, distributing profits to yourself as dividends can be subjected to personal income tax, potentially leading to double taxation (corporate + personal tax).

2. State income tax

State income tax obligations vary depending on the location of your practice. For example, Florida does not impose a state income tax, which can be advantageous for dental professionals practicing there. ​

3. Self-employment tax

If you operate as a sole proprietor, partner, or LLC owner, you must pay self-employment tax (15.3%) to cover Social Security and Medicare. Unlike W-2 employees, who have these taxes withheld from their paycheck, business owners are responsible for both the employer and employee portions.

Also read: Schedule SE (form 1040): Filing the self-employment tax form

4. Payroll tax (if you have employees)

When you have employees, you must withhold and remit payroll taxes (income tax, Social Security, Medicare, and unemployment tax). Failing to pay these can have serious legal consequences.

Just ask Jonathan Louis Lepow^[2], who ran payroll for his father’s dental clinic. Instead of sending withheld taxes to the IRS, he used them for business expenses. Now, he owes $500,000 in restitution and faces up to five years in prison. The lesson? Payroll taxes aren’t yours to spend.

5. Quarterly estimated taxes

Since taxes aren’t withheld from your earnings like a regular paycheck, you’re required to make quarterly estimated tax payments to the IRS and state tax agencies (if applicable). These payments cover your income tax and self-employment tax throughout the year to avoid a hefty bill in April.

Key considerations:

• Missing a quarterly payment can result in penalties and interest.
• Payments are due in April, June, September, and January—mark your calendar!

6. Other tax considerations

• Business property tax: If you own dental equipment, furniture, or office space, you may owe business property tax at the state or local level. This tax applies to physical assets used in your practice and is assessed annually.

• Sales tax: Certain states require dentists to collect and remit sales tax on products sold to patients, such as toothbrushes, whitening kits, or mouthguards. While most dental services are exempt, taxable items vary by state.

Tax strategies to lower your bill for your practice

1. Optimize payroll and employee expenses

Payroll is one of your largest operating costs, and how you manage it can directly affect your tax bill. Here’s how to do it smartly:

• Offer tax-free employee benefits: Offer tax-deductible benefits like health insurance, retirement contributions, or education assistance. These perks reduce your taxable income while improving employee satisfaction.

• Set up a retirement plan: Contributions to a 401(k)^[3] or SEP IRA^[4] for yourself and your employees are tax-deductible, reducing your taxable income while securing your financial future.

• Take advantage of the Work Opportunity Tax Credit (WOTC) ^[5]: If you hire employees from certain targeted groups (veterans, long-term unemployed, or individuals receiving government assistance), you could claim a tax credit of up to $9,600 per hire.

2. Hire family members to lower taxes

One of the most underutilized tax strategies for dentists is hiring family members. If your spouse or children perform legitimate work for your practice, paying them a salary can create valuable tax advantages.

• Reduce your taxable income: Wages paid to family members are deductible business expenses, lowering your practice’s taxable income.

• Shift income to a lower tax bracket: If your child works for your practice, their wages may fall under a lower tax bracket, meaning less overall tax paid by your family.

• Potential payroll tax saving: If you operate as a sole proprietorship or an LLC, hiring your children under 18 means you don’t have to pay Social Security and Medicare taxes on their wages.

Suppose you pay your 16-year-old child $12,000 a year for helping with administrative tasks. That salary is tax-deductible for your practice, and if their total income stays under the standard deduction ($14,600 for 2024), they may owe zero federal income tax.

3.  Take advantage of tax credits 

Tax credits directly reduce the amount of tax you owe—dollar for dollar. Here are a few that could benefit your dental practice:

• Small business health care tax credit: If you provide health insurance for employees and meet the requirements (fewer than 25 full-time employees, average wages under $56,000 per year), you may qualify for a tax credit of up to 50% of your premium contributions.

• R&D tax credit: Dentists engaged in research and development—such as testing new materials or software—may qualify for the Research & Development (R&D) tax credit, which can offset payroll or income taxes.

• Energy-efficient tax incentives: If your practice has upgraded to energy-efficient lighting, HVAC systems, or solar panels, you may qualify for deductions or credits under the Energy Policy Act.

4. Claim tax deductions

As a dentist, you might be in the same boat—paying more than necessary simply because you’re unaware of the tax breaks available to you. The key is knowing what you can deduct and how to maximize your savings.

Here are some deductible expenses:

• Dental equipment & supplies: Everything from X-ray machines to exam chairs and dental tools is tax-deductible.
• Lab fees: If you outsource crowns, dentures, or orthodontic appliances, those lab fees are a fully deductible business expense.
• Malpractice insurance: A necessary expense for every practicing dentist—and yes, it’s deductible.
• Office lease or mortgage interest: Whether you rent your space or own the building, you can deduct lease payments or mortgage interest.
• Employee salaries & benefits: Wages, health insurance, retirement contributions, and even perks like staff meals or uniforms can lower your taxable income.
• Retirement contributions: Setting up a Solo 401(k) or SEP IRA not only helps you save for the future but also lowers your taxable income today.
• Marketing & advertising: Website costs, Google ads, flyers, social media promotions—it all counts. If you’re spending money to attract new patients, the IRS lets you write it off.

Also read: 18 popular tax deductions for business owners in 2024-2025

5. Maximizing depreciation and amortization

The costs of running a dental practice add up fast. In fact, the average single-practice dentist spends 7.2% of collections on supplies^[7]—which means a practice bringing in $1 million a year could be shelling out $72,000 on equipment and materials alone.

That’s a huge chunk of revenue, but here’s the good news: smart tax planning can help you recoup some of those costs through depreciation and amortization.

Depreciation for dental equipment

When you purchase new equipment, the IRS doesn’t let you deduct the full cost immediately (unless you qualify for certain tax breaks). Instead, you depreciate it—meaning you deduct a portion of its cost each year over its useful life.

For example:

• A dental chair might have a seven-year depreciation schedule under IRS rules.
• A computer system for patient records typically depreciates over five years.

This spreads out your tax savings, helping you lower your tax burden each year instead of just once.

If you can’t wait that long, then you might want to look at Section 179^[8] and bonus depreciation^[9]. 

• Section 179 deduction: Lets you immediately deduct the cost of qualifying equipment (up to a set limit). Perfect if you made big investments in your practice this year.

• Bonus depreciation: Allows a large upfront deduction (up to 100%) in the year of purchase for qualifying assets. This can be especially useful for major upgrades.

Also read: Depreciation: Definition and types with examples

Amortization: spreading out intangible costs

Depreciation applies to physical equipment, but what about things like practice acquisition costs, goodwill, or patents? That’s where amortization comes in. The IRS allows you to deduct these intangible business expenses over 15 years.

How to plan for tax season

As tax season approaches, a proactive plan can help you stay compliant while keeping more of your hard-earned income. Last-minute scrambling leads to missed deductions, penalties, and unnecessary stress, but with the right steps, you can ensure compliance and maximize savings.

Here’s a structured plan to prepare for tax season the right way:

1. Accurate bookkeeping

If your financial records are disorganized, you risk missing deductions, underreporting income, or triggering IRS audits. The only way to prevent these troubles? Accurate bookkeeping. 

To prepare for tax season, you must: 

• Reconcile your accounts: Ensure your practice’s bank statements, insurance reimbursements, and patient payments match your financial records. Errors can lead to incorrect income reporting and higher taxes.

• Separate business & personal finances: If you’re paying for dental supplies, lab fees, or continuing education from a personal account, you may be missing out on deductions. A dedicated business account and credit card make tax season far easier.

• Track & categorize every expense: Properly logging equipment purchases, dental materials, office lease payments, and staff salaries helps maximize deductions and keeps your tax return audit-proof.

• Review payroll records: Payroll taxes are a major compliance risk. Ensure that all employee withholdings (including associate dentists, hygienists, and front desk staff) were properly paid throughout the year.

• Work with a dental bookkeeper: Working with a professional bookkeeper who understands the financial landscape of dentistry—like lab fees, CE costs, equipment depreciation, and staff compensation—ensures your books are accurate and compliant. They can spot commonly missed deductions, flag potential red flags before the IRS does, and help you make smarter financial decisions year-round—not just at tax time.

Pro tip: If your bookkeeping is not up-to-date, hiring a professional to catch up on your bookkeeping before tax season can save you thousands in deductions and prevent IRS penalties.

Also read: Can catch-up bookkeeping help you resolve tax issues?

2. Year-end strategies to reduce your bill

As the year wraps up, strategic financial decisions can help reduce your taxable income. Here’s what dentists should do before December 31st:

• Upgrade equipment & technology: Need a new CBCT scanner, intraoral cameras, or software upgrades? Under Section 179, you can deduct the full cost of equipment and technology placed into service before year-end.

• Prepay business expenses: If you expect higher profits this year, consider paying next year’s dental supplies, lab fees, or lease payments in advance to increase deductions now.

• Delay end-of-year invoicing: If your taxable income is high, you can delay billing for major procedures (like implants or full-mouth restorations) until January to shift income to the next tax year.

The bottom line 

Rushing through tax season—digging through piles of receipts, guessing what counts as a write-off, and hoping you didn’t miss anything—doesn’t just cause stress. It usually ends in overpaying or making mistakes that cost you later.

But imagine the opposite. Tax season rolls around, and everything is in place: your deductions are accounted for, estimated payments are made, and your tax bill? Lower than expected. That kind of outcome isn’t wishful thinking—it’s the result of accurate, up-to-date bookkeeping.

When you have a solid bookkeeping system in place, you stay compliant, maximize deductions,  and never overpay. 

Now, the question is: How do you create a foolproof bookkeeping system for your dental practice? By letting the experts do it for you.

At Cocountant, we provide specialized bookkeeping services for dental practices. From tax prep to identifying industry-specific deductions, we help you stay ahead of IRS requirements while keeping more of what you earn. Beyond tax savings, we streamline your billing cycle, manage patient receivables, and accelerate insurance claim collections to maintain a strong cash flow.

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