7 Mistakes New Np Practices Make in Their First Year

2026-08-21

Avoid costly tax errors in your first year as an NP practice owner. Learn the 7 most common mistakes and how to fix them now.

Starting an NP practice is exciting, but the first year can be a tax minefield. Many new owners make mistakes that cost them thousands in penalties, missed deductions, or unexpected tax bills. This guide walks you through the 7 most common tax mistakes new NP practices make, with concrete steps to avoid them. Read on to protect your practice’s financial health from day one.

Mistake 1: Choosing the Wrong Business Structure

Many NPs start as sole proprietors because it’s easy, but that structure offers no liability protection and can lead to higher self-employment taxes. A single-member LLC or an S-corp often makes more sense, depending on your income.

Sole proprietorship: No filing fees, but you pay 15.3% self-employment tax on all net income.
Single-member LLC: Costs $50-$500 to file, but you can elect S-corp status later.
S-corp: Requires payroll setup and filing a corporate tax return, but can save you thousands in self-employment taxes once your net income exceeds $40,000-$60,000.

Action step this week: Consult a CPA or tax attorney to determine the best structure for your projected income. If you’re already operating as a sole prop, you can still change your structure before year-end.

Mistake 2: Not Tracking Expenses from Day One

New NP practices often mix personal and business expenses, or simply lose receipts. Without accurate records, you’ll miss deductions and risk an audit.

Common deductible expenses for NP practices include:

Malpractice insurance ($5,000-$15,000/year)
Continuing education and license fees ($500-$2,000/year)
Medical supplies and equipment
Software subscriptions (EMR, billing, scheduling)
Marketing and website costs
Office rent and utilities
Professional fees (accounting, legal)

Action step this week: Open a dedicated business bank account and credit card. Use an expense tracking app like QuickBooks or Expensify. Start logging every purchase immediately, even small ones.

Mistake 3: Ignoring Quarterly Estimated Taxes

If you’re self-employed, you must pay estimated taxes quarterly. Missing these payments results in penalties and interest, and can create a huge tax bill at year-end.

For 2026, the IRS requires quarterly payments if you expect to owe more than $1,000 in tax. The due dates are:

April 15
June 15
September 15
January 15 (of the next year)

Action step this week: Calculate your estimated tax using Form 1040-ES. A good rule of thumb is to set aside 25-30% of your net income for federal taxes, plus state taxes. Pay online via the IRS Direct Pay system.

Mistake 4: Overlooking Home Office Deduction

If you use part of your home regularly and exclusively for your practice, you can deduct it. Many NPs skip this because they think it’s complicated or risky, but it’s a legitimate deduction.

Two methods:

Simplified method: $5 per square foot, up to 300 square feet (max $1,500/year)
Regular method: Actual expenses (mortgage interest, utilities, insurance) multiplied by the percentage of your home used for business

Action step this week: Measure your home office space and document its exclusive use. Take photos and keep a log of hours used. If you use the regular method, track all home expenses.

Mistake 5: Not Separating Personal and Business Finances

Using a personal account for business transactions creates bookkeeping chaos and can jeopardize your liability protection if you have an LLC. It also makes tax preparation more expensive and error-prone.

Action step this week: If you haven’t already, open a business checking account and a business credit card. Use them exclusively for practice expenses. Transfer funds from personal to business as needed, and document all transfers.

Mistake 6: Failing to Pay Yourself a Reasonable Salary

If you elect S-corp status, you must pay yourself a “reasonable salary” for the work you do. Paying too little (or nothing) to avoid payroll taxes is a red flag for the IRS.

For NP practices, a reasonable salary typically ranges from $80,000 to $120,000, depending on your location and hours. The rest of your profits can be distributed as dividends, which are not subject to self-employment tax.

Action step this week: If you’re an S-corp, review your salary with a CPA. If you’re not yet an S-corp, plan for this requirement if you elect it in the future.

Mistake 7: Missing Out on Retirement Plan Deductions

Retirement plans offer significant tax deductions, but many new NP owners don’t set one up in their first year. A SEP IRA or Solo 401(k) can reduce your taxable income substantially.

SEP IRA: Contribution up to 25% of net earnings, max $66,000 in 2026 (up from $61,000 in 2024)
Solo 401(k): Employee contribution up to $23,000 (plus $7,500 catch-up if over 50), plus employer contribution up to 25% of compensation

Action step this week: Open a SEP IRA or Solo 401(k) with a low-cost provider like Fidelity, Vanguard, or Charles Schwab. Even a small contribution now can save you thousands in taxes.

FAQ

Q: When should I start paying estimated taxes? A: As soon as you have net income from your practice. If you’re starting mid-year, you can use the annualized income installment method to calculate smaller payments for earlier quarters.

Q: Can I deduct health insurance premiums? A: Yes, if you’re self-employed and not eligible for an employer-sponsored plan. You can deduct premiums for yourself, your spouse, and dependents on your personal return, subject to net income limits.

Q: What if I miss a quarterly estimated tax payment? A: You’ll face a penalty based on the amount owed and the time it’s late. You can minimize the penalty by paying as soon as possible and filing Form 2210 to explain any reasonable cause.

Q: Should I hire a CPA for my first year? A: Yes, especially if you’re an S-corp or have complex deductions. A CPA can cost $500-$2,000 for a basic return, but they can save you far more in avoided penalties and missed deductions.

The bottom line

The first year of your NP practice sets the tone for your financial future. Avoid these 7 mistakes to keep more of your hard-earned money and stay on the right side of the IRS. Start with the action steps this week: choose the right structure, track every expense, and set up a system for estimated taxes. A little planning now can save you thousands later. If you’re unsure about any of these steps, invest in a good CPA who specializes in healthcare practices. It’s one of the best investments you can make.