7 Mistakes New Pt Practices Make in Their First Year

2026-08-21

Avoid common tax pitfalls in your first year as a PT practice owner. Learn the 7 mistakes to sidestep and practical steps to stay compliant and profitable.

Starting a physical therapy practice is exciting, but the first year is also a minefield of tax mistakes that can cost you thousands. Many new owners focus on treating patients and neglect the business side, leading to penalties, missed deductions, and cash flow problems. This guide outlines the seven most common tax mistakes new PT practices make, and how to avoid them.

Mistake 1: Choosing the Wrong Business Structure

Many new PTs start as sole proprietors without realizing the tax implications. As a sole proprietor, you pay self-employment tax (15.3% in 2026) on all net earnings, and you have unlimited personal liability. An LLC or S-corp can offer liability protection and potential tax savings, but they come with costs and administrative burdens.

What to do this week: Consult a CPA or tax attorney to evaluate your options. If you expect net income above $40,000, an S-corp election might save you money on self-employment tax, but you’ll need to pay yourself a reasonable salary and file additional forms. The cost of forming an LLC ranges from $50 to $500 depending on your state.

Mistake 2: Not Tracking Expenses from Day One

In the chaos of opening, many owners mix personal and business expenses, or fail to keep receipts. This leads to missed deductions and potential audit flags. The IRS requires you to substantiate expenses with records.

What to do this week: Open a dedicated business bank account and credit card. Use accounting software like QuickBooks (priced at $30-$100/month) or Xero ($12-$65/month) to categorize every transaction. Scan and store receipts digitally using apps like Expensify or Shoeboxed.

Mistake 3: Misclassifying Employees as Independent Contractors

PT practices often hire front desk staff, aides, or even other PTs. Misclassifying employees as 1099 contractors can lead to back taxes, penalties, and interest. The IRS uses a 20-factor test to determine worker status.

What to do this week: Review your current worker arrangements. If you control how, when, and where work is done, they are likely employees. Use Form SS-8 to ask the IRS for a determination if unsure. For employees, you must withhold payroll taxes and file quarterly returns.

Mistake 4: Ignoring Quarterly Estimated Taxes

New owners often expect to pay taxes once a year, but the IRS requires quarterly estimated payments if you expect to owe more than $1,000. Failure to pay can result in penalties, even if you pay the full amount at year-end.

What to do this week: Estimate your 2026 tax liability using your projected income. Pay quarterly by April 15, June 15, September 15, and January 15. Use IRS Form 1040-ES. A CPA can help you calculate safe harbor amounts.

Mistake 5: Overlooking Home Office and Vehicle Deductions

If you use a home office exclusively for your practice, you can deduct a portion of rent, utilities, and internet. Similarly, if you travel between clinic locations or to see patients, you can deduct mileage. Many new owners miss these because they fear audits.

What to do this week: Measure your home office space and calculate the percentage of your home used. For 2026, the simplified home office deduction is $5 per square foot, up to 300 square feet. For vehicle expenses, choose between the standard mileage rate (65.5 cents per mile in 2026) or actual expenses. Keep a mileage log.

Mistake 6: Failing to Take Advantage of Retirement Plans

Retirement plans offer significant tax deductions, but many new owners delay setting them up. A SEP IRA allows you to contribute up to 25% of net earnings (capped at $66,000 in 2026), reducing your taxable income. A solo 401(k) allows even higher contributions.

What to do this week: Open a SEP IRA or solo 401(k) before year-end to reduce your 2026 tax bill. Contributions must be made by the tax filing deadline (April 15, 2027) to count for 2026. Even a modest contribution of $5,000 can save you $1,500 in taxes.

Mistake 7: Not Keeping Up with Tax Law Changes

Tax laws change frequently. For 2026, the standard deduction is $14,600 for single filers and $29,200 for married couples filing jointly. The Section 179 deduction allows you to deduct up to $1,160,000 for equipment purchases, but the rules can be complex. New owners who rely on outdated advice may miss opportunities or trigger penalties.

What to do this week: Subscribe to IRS email updates or follow a reputable tax blog. Schedule a mid-year tax review with your CPA to adjust withholding and estimated payments. Consider hiring a tax professional who specializes in healthcare practices.

FAQ

Q: When are quarterly estimated taxes due? A: For 2026, the due dates are April 15, June 15, September 15, and January 15, 2027. If a due date falls on a weekend or holiday, the deadline moves to the next business day.

Q: Can I deduct the cost of my PT license and continuing education? A: Yes, license fees and continuing education courses that maintain or improve your skills are deductible as business expenses, as long as they are directly related to your practice.

Q: What happens if I miss a quarterly payment? A: You may be charged a penalty based on the amount owed and the time it was late. The penalty rate is currently around 5% per month, up to 25% of the unpaid tax.

Q: Should I hire a CPA or use tax software? A: For a new practice, a CPA can save you money by identifying deductions and ensuring compliance. Costs range from $500 to $2,000 for a basic return. Software like TurboTax costs $60-$120, but may not catch everything.

The bottom line

The first year of your PT practice sets the foundation for long-term success. Avoiding these seven tax mistakes will save you money, reduce stress, and keep you compliant. Start by tracking expenses, choosing the right structure, and setting up a retirement plan. Consult a tax professional to tailor strategies to your situation. With careful planning, you can minimize your tax burden and focus on what you do best: helping patients recover.