Buying a medical practice is an exciting shift. You move from being paid as an employee to owning the revenue, the expenses, and the long-term value of the business. Most physicians focus first on patient retention, staffing, and operations. Taxes feel like something to deal with later.
But your taxes after buying a practice in your first year is not just a routine filing. It is a transition year. The way the deal was structured, how the purchase price was allocated, how you pay yourself, and how you plan for estimated taxes will all shape your financial outcome. Decisions made in year one often carry forward for years.
Here’s what actually changes after you buy a practice and what you should pay attention to in your first tax year as an owner.
Your Income Reporting Changes Immediately
One of the biggest shifts is how your income shows up on your tax return. If you were previously a W-2 employee, taxes were withheld automatically from each paycheck.
But after you buy into or acquire a practice, you are typically paid as:
- A partner receiving Schedule K-1 income from a partnership, or LLC taxed as a partnership
- An S corporation owner receiving both W-2 wages and distributions
- A sole owner reporting business income on Schedule C
Each structure affects how income is taxed and how much flexibility you have in planning.
The IRS makes clear that partners in a partnership are not employees and generally receive K-1 income instead of W-2 wages. That means no automatic withholding. You are responsible for planning and paying taxes on your share of profits.
In your first year, it is common for physicians to underestimate how different this feels. Income may look strong on paper, but without withholding, you must set aside cash intentionally.
The amount to set aside depends on your income level, entity structure, and which state you reside in, but a rough guide would be to set aside 35% to 40% of net profit until your CPA confirms a more precise number.
You Are Now Responsible For Estimated Tax Payments
Once you become an owner, quarterly estimated tax payments become part of your routine.
The IRS requires individuals to make quarterly estimated payments if they expect to owe at least $1,000 in tax after withholding and credits. This applies to most practice owners. Payments are generally due in April, June, September, and January.
There are safe harbor rules that can help you avoid underpayment penalties. In general, you can avoid penalties if you pay at least:
- 90% of your current year’s total tax
- 100% of last year’s total tax, or
- 110% of last year’s total tax, if your prior year adjusted gross income was over $150,000 for married filing jointly or $75,000 for single
In most first-year ownership transitions, we recommend using the prior year safe harbor to avoid underpayment penalties. That typically means paying in 100% of last year’s total tax liability, or 110% for higher-income physicians. This approach protects while income stabilizes. However, every practice acquisition is different. We suggest working with a medical CPA to run quarterly projections to prevent an unexpectedly large balance due at filing time and to adjust payments if income trends shift.
The Structure Of Your Purchase Affects Your Taxes
Many physicians focus on the purchase price of the practice. Few focus on how that price is allocated.
Most medical practice acquisitions are structured as asset purchases rather than stock purchases. In an asset purchase, you are buying specific assets such as equipment, furniture, patient records, and goodwill.
The allocation of the purchase price matters because different assets are treated differently for tax purposes:
- Equipment and other qualifying tangible assets can often be fully expensed in year one, under permanent 100% bonus depreciation rules.
- Section 179 allows additional first year expensing, subject to annual limits and taxable income thresholds, and is applied before bonus depreciation.
- Goodwill and other intangibles are generally amortized over 15 years
The IRS requires both buyer and seller to file Form 8594 to report the agreed allocation of assets in an applicable asset acquisition. If the allocation is not handled carefully, you may miss opportunities to accelerate deductions in your early years of ownership.
Depreciation And Amortization Become Planning Tools
Once you own the practice, depreciation is no longer just about what you bought at closing. It becomes a strategic lever for future purchases.
One key concept many physicians miss is that depreciation generally applies when an asset is placed in service, not simply when it is purchased. That timing matters.
If you buy new equipment in December but it is not operational until January, the deduction may fall into the next tax year. On the other hand, equipment that is fully installed and in use before year-end may qualify for first-year expensing.
The takeaway is this: capital purchases should not be made casually at year end. They should be coordinated with projected income, cash flow, and tax strategy. In some years, accelerating deductions makes sense. In others, spreading deductions over time may preserve flexibility. As a practice owner, you now have control over that timing.
Your Payroll Responsibilities Expand
If you now own the practice, you are no longer just on payroll. You are responsible for running it.
That includes:
- Withholding and remitting federal income tax, Social Security, and Medicare taxes
- Paying the employer portion of payroll taxes
- Filing quarterly payroll tax returns
- Issuing W-2s and 1099s correctly
The IRS takes payroll compliance seriously. Penalties for late deposits or incorrect filings can be significant.
If your entity is taxed as an S corporation, you must also pay yourself reasonable compensation as W-2 wages before taking distributions. This is a common area of scrutiny.
Your first year should include a review of payroll setup, worker classification, and reasonable compensation.
Retirement Planning Changes In A Good Way
As an employee, your retirement contributions were likely limited to the plan your employer offered. As a practice owner, you have more options.
Depending on structure and income, you may consider:
- Solo 401(k)
- Traditional or Roth 401(k) with profit sharing
- Defined benefit plans for higher-income physicians
These plans can allow substantially higher contribution limits compared to employee-only deferrals. Contributions are often deductible to the business, reducing taxable income.
Your first year is an opportunity to align retirement planning with tax strategy rather than treating it as an afterthought.
State And Local Taxes May Look Different
Depending on your state, practice ownership may trigger additional filings.
Some states impose:
- Pass through entity taxes
- Franchise or margin taxes
- Business license fees
- Local payroll or business taxes
If you purchased a practice in a new state or expanded operations, nexus rules may also apply.
These obligations are often overlooked in transition years because attention is focused on the federal return. Early registration and compliance reduce the risk of penalties and interest later.
Your First Year Should Include A Tax Planning Calendar
The most successful transitions we see share one trait: they are proactive.
In your first year after buying a practice, you should:
- Set up clean bookkeeping and a dedicated business bank account
- Schedule quarterly tax projection meetings
- Confirm your purchase price allocation and depreciation schedule
- Review entity structure and compensation strategy
- Evaluate retirement plan options before year-end
- Document major capital expenditures
Waiting until tax season compresses all of this into a reactive scramble, but planning throughout the year creates options.
Your First Year Sets The Tone For The Next Decade
Your first tax year will likely feel more complex than anything you have filed before. That is normal. What matters is building the right framework early. The way you allocate the purchase price, plan estimated taxes, structure compensation, and capture deductions will shape your long-term results.
At MedTax, we work exclusively with physicians and medical practices. We understand the transition from employee to owner because we guide doctors through it every year.
If you recently purchased a practice or are preparing to do so, schedule a free discovery call with us.
We would be glad to support you through your first year’s tax plan.
