As a Certified Registered Nurse Anesthetist (CRNA), you’ve spent considerable time and financial resources on education and training to qualify for one of the highest paying branches of nursing. Along with the higher earning potential comes greater tax obligations and the chance for effective tax strategy planning. Be it as an independent contractor, a hospital employee, or a practice owner, using the proper tax planning strategies can shave off thousands of dollars of tax liability each year.
Many CRNAs let go of considerable tax savings because of ignorance and failure to properly implement available strategies. This guide provides an overview of critical tax strategies that each CRNA can use to better their tax liability and retain more of what they earn.
1. S-corp Election w/ Owner’s Compensation Optimization
What is an S-Corp and Why It Matters
An S-Corporation election is one of the most powerful tax strategies available to CRNAs who work as independent contractors or own their own practices. When you elect S-Corp status for your LLC or corporation, you transform from being subject to self-employment taxes on all your business income to only paying these taxes on your reasonable salary.
If your W2 earnings already exceed the Social Security wage base limit ($176,100 in 2025), incorporating could result in double taxation on your S-corp salary for the employer portion of FICA. However, for most CRNAs, the S-Corp election provides substantial self-employment tax savings.
The main advantage is found in the taxation of S-Corp owners. S-Corp owners only pay payroll taxes (Social Security and Medicare) on their reasonable salary, rather than paying 15.3% self-employment tax on all business profits. The owner receives the remaining profits as distributions, which are exempt from self-employment taxes.
For example, if you earn $300,000 annually as an independent contractor CRNA:
- Without S-Corp: You’d pay 15.3% self-employment tax on the full amount
- With S-Corp: You might pay yourself a $150,000 salary (subject to payroll taxes) and take $150,000 in distributions (not subject to self-employment tax)
Tips for Determining a “Reasonable Salary”
Before receiving distributions, S-Corp owners who work for their business are required by the IRS to pay themselves a “reasonable salary.” This is where a lot of CRNAs make costly errors. The pay must be on par with what you would pay someone else to do the same work.
For CRNAs, reasonable salary considerations include:
- Geographic location and local market rates
- Years of experience and specializations
- Responsibilities beyond direct patient care
- Time devoted to the business
- Industry standards for similar roles
A good rule of thumb is to set your salary at 40-60% of your total S-Corp income, though this varies based on your specific circumstances. Working with a tax professional familiar with healthcare professionals is crucial for getting this right.
Common Mistakes to Avoid
Several pitfalls can derail your S-Corp strategy:
- Setting salary too low: As an S-corp owner-employee, you risk IRS scrutiny and possible reclassification of your distributions as wages subject to payroll taxes if you pay yourself an unreasonable low salary. If your salary is judged to be too low, you may be subject to back payroll taxes, penalties, and interest. The IRS requires S-corp shareholders who work for the business to pay themselves “reasonable compensation” based on industry standards.
- Poor documentation: To maintain their legal protection and tax status, S-corporations must adhere to stringent corporate procedures, such as holding regular board meetings, keeping thorough minutes of those meetings, maintaining separate business bank accounts, and maintaining accurate records. In addition to making tax filings more difficult during IRS audits, breaking these corporate procedures can result in “piercing the corporate veil,” where courts may hold shareholders personally accountable for company debts.
- Missing the election deadline: Newly formed businesses have 2 months and 15 days from the date of their founding to apply for tax treatment as S corporations. The deadline for an established business is the fifteenth day of the third month (March 15, 2025, for calendar-year businesses). Missing this deadline means waiting until the following tax year to make the election, potentially losing out on significant tax savings for an entire year.
- Inadequate payroll setup: S-corp owner-employees are required to use payroll software or a service provider and an EIN to run formal payroll for their salaries, which includes quarterly payroll tax deposits, appropriate tax withholdings, and annual reporting. Inadequate payroll practices may lead to fines from several authorities as well as issues with tax returns, workers’ compensation insurance, and compliance with employment laws.
2. Accountable Plan & Home Office Deduction
Home Office Deduction Rules (Renters & Homeowners)
The home office deduction is available to self-employed individuals, independent contractors, and business owners who run part of their business from home. To qualify, you must use a portion of your home for business purposes on a regular and exclusive basis.
For CRNAs, this might include:
- A dedicated space for administrative tasks, continuing education, or patient chart reviews
- Storage area for medical supplies or equipment
- Meeting space for consultations or business planning
The space must be used exclusively for business purposes – you can’t claim your kitchen table where you occasionally do paperwork. However, if you use a home office as your primary location for substantial administrative activities you are allowed to essentially have two work locations.
There are two methods for calculating the home office deduction:
- Simplified method: $5 per square foot up to 300 square feet (maximum $1,500)
- Actual expense method: Calculate the percentage of your home used for business and deduct that percentage of qualifying home expenses
How to Properly Document and Reimburse Yourself
If you’ve elected S-Corp status, you can implement an accountable plan to reimburse yourself for home office expenses. Under an accountable plan, your business can pay you rent for your home office space. Reimbursements through accountable plans are not taxable, meaning they come with great money-saving benefits.
An accountable plan must meet three requirements:
- Business connection: Expenses must be business-related
- Substantiation: You must provide adequate records within a reasonable time
- Return of excess: Any excess reimbursements must be returned within a reasonable time
IRS Safe harbor rules are 60 days for accounting of expenses and 120 days for excess reimbursements.
To implement this strategy:
- Calculate the business percentage of your home
- Create a formal accountable plan document
- Set a fair rental rate (research local commercial rates)
- Pay yourself monthly rent from your business
- Maintain detailed records and documentation
Real-Life Deductible Expense Examples
Under an accountable plan, CRNAs can reimburse themselves for:
- Rent or mortgage interest (business percentage)
- Property taxes (business percentage)
- Utilities (electricity, gas, water, internet)
- Home insurance (business percentage)
- Repairs and maintenance
- Office supplies and equipment
- Professional development materials kept at home
If your office space makes up 25% of the total square footage of your home, you can use an accountable plan to reimburse yourself for 25% of the rent. This means getting $500 tax-free from your company to pay for your rent each month, and your business can write that off as an expense.
3. Augusta Rule Deduction
The Augusta Rule, named after the famous golf tournament location of the Masters tournament, is one of the most underutilized tax strategies available to business owners, including CRNAs with their own practices or S-Corps.
How CRNAs Can Use It
This strategy is outlined in IRS Section 280A(g), which clearly permits tax-free rental income when a personal residence is rented for 14 days or fewer per year. For CRNAs, this creates an opportunity to rent your home to your business for legitimate business purposes.
Common scenarios where CRNAs can utilize the Augusta Rule:
- Board meetings or strategic planning sessions
- Staff meetings or training sessions
- Continuing education events
- Business development meetings
- Client consultations (where appropriate)
- Administrative retreats
The Augusta Rule lets homeowners rent out their residence to their S-corp, LLC business for up to 14 days per year without needing to report that rental income on their individual tax returns.
Step-by-Step: How to Implement It
- Identify legitimate business uses: Document specific business purposes that require use of your home beyond your regular home office
- Find reasonable rental rates: Find out how much similar spaces (hotels, conference centers, meeting rooms) in nearby areas rent for.
- Create proper documentation: Draft rental agreements between yourself and your business
- Schedule and document events: Maintain detailed records of business activities conducted
- Pay fair rental rates: Transfer money from business to personal accounts
- Keep detailed records: Save all documentation, agendas, attendee lists, and business purposes
The rental rate should be reasonable and comparable to what you’d pay for similar space elsewhere. Many CRNAs can justify $200-500 per day depending on their location and the space used.
4. Set Up & Fund a Solo 401k or SEP IRA
Retirement planning is crucial for CRNAs, especially those who work as independent contractors and don’t have access to employer-sponsored retirement plans.
Solo 401(k) vs. SEP IRA: What’s the Difference?
Solo 401(k) (also called Individual 401(k)):
- Available to self-employed individuals with no employees (except spouse)
- Higher contribution limits
- Allows both employee and employer contributions
- The amount individuals can contribute to their 401(k) plans in 2025 has increased to $23,500, up from $23,000 for 2024
- Can contribute up to 100% of compensation or $70,000 for 2025 ($77,500 if 50 or older)
- Individuals aged 60 to 63 can benefit from an even higher catch-up contribution limit of $11,250, allowing for a maximum contribution of $81,250
SEP IRA (Simplified Employee Pension):
- Available to self-employed individuals and small business owners
- Simpler to set up and maintain
- Only employer contributions allowed (up to 25% of compensation or $70,000 for 2025)
- Must include all eligible employees if you have them
- Lower administrative burden
For most CRNAs working independently, the Solo 401(k) offers more flexibility and higher contribution limits.
Deadlines and Limits
2025 Contribution Limits:
- Solo 401(k): Up to $70,000 ($77,500 with catch-up for 50+, $81,250 for ages 60-63)
- SEP IRA: Up to $70,000 or 25% of compensation
- Employee deferrals: Up to $23,500 ($34,750 with catch-up for 50+, $34,750 for ages 60-63)
Important Deadlines:
- Plan establishment: By December 31 of the tax year
- Contributions: By tax filing deadline (including extensions)
- Required minimum distributions: Begin at age 73
Why It Pays Off
The tax benefits are substantial:
- Immediate tax deduction for contributions
- Tax-deferred growth
- Potential for significant retirement savings
For example, a CRNA earning $250,000 annually could potentially contribute $70,000 to a Solo 401(k), reducing their taxable income by that amount and saving approximately $17,500-$24,500 in taxes (depending on tax bracket).
5. Track Mileage & Travel
Why CRNAs Miss Out on Deductions
Many CRNAs work at multiple facilities, travel for continuing education, or visit patients at different locations. However, they often fail to track these business-related travel expenses properly, missing out on valuable deductions.
The key distinction is between commuting (not deductible) and business travel (deductible). Your commute from home to your regular workplace isn’t deductible, but travel between business locations, to continuing education events, or for other business purposes is deductible.
What You Can Deduct
Mileage: For 2025, the standard mileage rate for business use is typically around 67 cents per mile (rates are updated annually by the IRS – verify current rate).
Other travel expenses:
- Airfare for business trips
- Hotel accommodations
- Meals (generally 50% deductible)
- Car rentals
- Parking fees and tolls
- Conference registration fees
- Professional development courses
Business Travel vs. Commuting
Deductible business travel:
- Travel between multiple work locations in the same day
- Travel to continuing education seminars or conferences
- Travel to professional meetings
- Travel to pick up supplies or equipment
- Travel for business networking events
Non-deductible commuting:
- Regular daily travel from home to your primary workplace
- Travel for personal reasons
- Travel that’s reimbursed by your employer
Tools to Make It Easy
Mileage tracking apps:
- MileIQ
- Everlance
- TripLog
- QuickBooks Self-Employed
Best practices:
- Start tracking immediately
- Record business purpose for each trip
- Take photos of receipts
- Use GPS tracking when possible
- Maintain a mileage log with dates, destinations, and business purposes
6. Quarterly Estimated Tax Payments
Why It Matters for CRNAs
CRNAs who work as independent contractors or have significant income from sources where taxes aren’t withheld must make quarterly estimated tax payments. Failing to do so can result in underpayment penalties, even if you pay the full amount owed when you file your return.
The IRS expects you to pay taxes as you earn income throughout the year, not just once annually. This is especially important for high-earning CRNAs who may owe substantial amounts.
When Payments Are Due
2025 Quarterly Due Dates:
- Q1 (Jan-Mar): Due April 15, 2025
- Q2 (Apr-May): Due June 16, 2025
- Q3 (Jun-Aug): Due September 15, 2025
- Q4 (Sep-Dec): Due January 15, 2026
Note that the quarters aren’t equal lengths, and the due dates don’t always fall on the 15th due to weekends and holidays.
How to Calculate Your Payments
You must pay the smaller of:
- 90% of the current year’s tax liability, or
- 100% of last year’s tax liability (110% if your prior year AGI exceeded $150,000)
Safe harbor rule: If you pay 100% of last year’s tax liability (110% for high earners), you won’t owe penalties regardless of what you owe for the current year.
Calculation steps:
- Estimate your annual income
- Calculate expected tax liability
- Subtract any withholding from W-2 jobs
- Divide the remaining amount by 4 for quarterly payments
Avoid These Penalties
Underpayment penalties apply when you:
- Don’t pay enough during the year
- Pay late (even by one day)
- Don’t pay evenly throughout the year
The penalty is calculated on each quarterly shortfall and compounds over time. For 2025, the underpayment penalty rate is typically around 8% annually.
Exception: You won’t owe penalties if:
- You owe less than $1,000 in tax
- You meet the safe harbor requirements
- You qualify for certain exceptions (casualty, disaster, unusual circumstances)
Helpful Tools & Services
Payment methods:
- IRS Direct Pay (free for bank transfers)
- Electronic Federal Tax Payment System (EFTPS)
- Credit card payments (fees apply)
- Phone payments (fees apply)
Tax software:
- QuickBooks Self-Employed
- TurboTax Self-Employed
- FreeTaxUSA
- Professional tax preparation software
Professional help:
- CPAs specializing in healthcare professionals
- Enrolled agents
- Tax preparation services familiar with contractor issues
Final Thoughts
These six strategies can save CRNAs thousands annually while ensuring tax compliance. However, tax situations are individual, and what works for one CRNA may not suit another.
Success requires starting early, maintaining excellent records, and working with qualified professionals who understand healthcare providers’ unique challenges. Many strategies must be implemented during the tax year to be effective.
Consider consulting with a CPA specializing in healthcare professionals to determine which strategies benefit your specific situation. Tax laws change frequently, so always verify current regulations before implementing any strategy.
By taking a proactive approach to tax planning, you can keep more of your hard-earned income and build greater financial security.
