Originally published October 24, 2025 · Updated July 24, 2026
For most 1099 CRNAs with an S-Corp, the clean default is still personal ownership, a proper accountable plan, and a mileage log that can survive contact with reality.
The short version
Keep a mixed-use vehicle in your personal name unless there is a clear reason not to. If you operate through an S-Corp, have it reimburse documented business driving under an accountable plan. If you file Schedule C, compare standard mileage with actual expenses before choosing a method. In either case, do not confuse a commute with a business trip.
The IRS increased the business mileage rate halfway through 2026 because fuel prices moved enough to justify a second rate. The depreciation component remains 35 cents per business mile for basis-reduction purposes.12
Who this guide is for
This article is primarily for 1099 CRNAs, sole proprietors, and S-Corp owner-employees. Most W-2 employees cannot deduct unreimbursed vehicle expenses on their federal return. If a hospital wants you to drive for its business, reimbursement is usually the cleaner answer.5
Why we usually keep the vehicle personal
Personal ownership plus an S-Corp accountable plan is usually easier to administer than putting a mixed-use vehicle on the company books. The corporation deducts a properly substantiated reimbursement. The owner-employee generally receives that reimbursement without it becoming taxable wages.
A proper accountable plan is not a monthly transfer labeled “car stuff.” It needs three things:
- Business connection The driving must be ordinary and necessary for the S-Corp’s business, not personal commuting dressed up in a nicer outfit.
- Substantiation The owner-employee must provide the mileage, date, destination, and business purpose within a reasonable period.
- Return of excess Any advance beyond the substantiated amount must be returned within a reasonable period.5
The IRS reasonable-period safe harbors generally use 60 days to substantiate an advance and 120 days to return an excess amount. That is a backstop, not a reason to wait until day 59 every month.
There is no legal “80% maximum.” Your business-use percentage is whatever the records honestly support. More than 50% qualified business use is the important threshold for Section 179, bonus depreciation, and accelerated MACRS on listed property. If the log supports 83%, use 83%. If it supports 100%, expect someone to ask where you buy groceries.
A personally owned car is not an S-Corp asset. The company deducts a qualifying reimbursement, but it cannot take Section 179 or depreciation on a vehicle it does not own. An S-Corp-owned vehicle may be depreciated by the company, while any personal use by the shareholder-employee generally needs to be valued and reported as a taxable fringe benefit.6
Business ownership can still make sense for a vehicle used almost entirely by the company. It also creates payroll considerations and a messier exit when the vehicle is sold or transferred. That is why we model it first instead of buying the SUV and asking the tax question afterward.
CRNA vehicle-deduction calculator
This calculator starts with the tax setup, because a Schedule C vehicle, a personally owned vehicle reimbursed by an S-Corp, and an S-Corp-owned vehicle do not get the same treatment. It separates the two 2026 mileage periods and shows its assumptions instead of hiding them behind a cheerful green checkmark.
Estimate the 2026 federal treatment
Enter only qualified business miles. Use total miles for the same period the vehicle was available for business use.
- Calculated business use0%
- Jan-Jun mileage amount$0
- Jul-Dec mileage amount$0
- Business share of loan interest added to Schedule C mileage$0
- Business share of operating costs and interest$0
- Section 179 estimate$0
- First-year depreciation estimate$0
- Business parking and tolls$0
Mileage versus actual expenses
When both methods are available, the calculator tells you which estimate is larger in year one. That is not always the same as telling you which method is better.
Standard mileage
Multiply qualified business miles by the applicable rate, then add business parking and tolls. For a Schedule C taxpayer, the business share of vehicle-loan interest and certain personal-property taxes may also be deductible. The standard rate already includes depreciation, fuel, insurance, repairs, maintenance, registration, oil, and lease costs, so do not add those expenses again.5
If you own the vehicle and want the option to switch between mileage and actual expenses later, you generally need to choose standard mileage in the first year the vehicle is available for business use. A leased vehicle that starts with standard mileage must stay with it for the full lease period, including renewals.5
Actual expenses
Deduct the business-use share of eligible fuel, insurance, repairs, registration, interest, and other operating costs, plus allowable depreciation. This method may produce a larger first-year deduction for an expensive vehicle, especially one over 6,000 pounds GVWR.
For a Schedule C vehicle or an entity-owned vehicle, actual expenses also bring more records, depreciation limits, elections, and possible recapture. A personally owned vehicle reimbursed by an S-Corp is a different path; the company cannot depreciate an asset it does not own. If you use Section 179, bonus depreciation, or accelerated MACRS on an eligible vehicle, you generally cannot hop back to standard mileage later as though nothing happened.
The part the calculator cannot decide
A large first-year depreciation deduction is mostly a timing benefit. It reduces basis now and can create recapture later. Compare the full ownership period, not just the year that makes the tax projection look prettiest.
Heavy SUVs and the “big write-off”
A four-wheeled passenger vehicle rated above 6,000 pounds and no more than 14,000 pounds GVWR can avoid the passenger-auto depreciation caps. Many heavy SUVs are still subject to a separate $32,000 Section 179 limit in 2026. The overall 2026 Section 179 limit is $2,560,000, with phaseout beginning when total qualifying property placed in service exceeds $4,090,000.4
If qualified business use is more than 50%, eligible property acquired and placed in service during 2026 may also qualify for 100% bonus depreciation. That can potentially deduct the remaining business basis after Section 179. Certain work vans, vehicles with seating for more than nine passengers behind the driver, and pickups with qualifying cargo beds can fall outside the SUV cap, but the design details matter.10
A vehicle converted from prior personal use is different from one newly acquired for business. Section 179 is generally unavailable on a personal-to-business conversion, and depreciation basis is generally limited to the lower of adjusted basis or fair market value on the conversion date. The calculator does not model that situation.8
For ordinary passenger autos placed in service in 2026, the federal depreciation limits are:
- With bonus $20,300 in year one, $19,800 in year two, $11,900 in year three, and $7,160 in each later year.
- Without bonus $12,300 in year one, followed by the same $19,800, $11,900, and $7,160 limits. Each limit is reduced when business use is below 100%.3
One planning rule survives every tax-law change: spending $80,000 to save $25,000 of tax still means you spent $55,000. Buy the vehicle because it fits the work and the household. Let the deduction improve a good decision, not rescue a bad one.
Watch the more-than-50% test. If business use later drops to 50% or less, part of the accelerated depreciation or Section 179 deduction may be recaptured as income. State depreciation rules may also differ from the federal result.
What happens after year one?
The standard mileage method reduces vehicle basis by 35 cents for each 2026 business mile. A later sale can create ordinary-income depreciation recapture. If qualified business use drops to 50% or less during the recovery period, excess accelerated depreciation may be recaptured and future depreciation generally moves to the alternative depreciation system. A vehicle trade-in is not a tax-free Section 1031 exchange; that treatment is now generally limited to real property.58
What actually counts as business mileage?
The label on the calendar does not control the deduction. The purpose and route do.
- Usually personal Driving from home to your main or regular hospital is commuting, even when the shift is long, you are on call, you carry work equipment, or you discuss work in the car.
- Usually business Driving between business locations during the workday, visiting a client or vendor, making a business bank or supply run, or traveling from one qualifying worksite to another.
- Home-office trips If a qualifying home office is your principal place of business, travel from that office to another location in the same trade or business may be business transportation.
- Locum assignments Temporary-worksite and tax-home rules can change the answer. A work location is generally temporary only when it is realistically expected to last one year or less. If you have no regular workplace, home-to-temporary-site travel within your metropolitan area is generally commuting.
Do not count the same mileage against two businesses or treat ordinary family driving as a business expense because the vehicle has your company’s logo on it. Advertising on a car does not convert personal use into business use.5
A qualifying home office can matter, but the qualification comes first. IRS Publication 587 includes a self-employed anesthesiologist example in which an exclusive, regularly used home office for administrative work qualifies because there is no other fixed location for substantial administrative work. That does not mean every 1099 CRNA has a qualifying home office, and it does not turn travel to an unrelated W-2 hospital job into 1099 mileage.9
Records the IRS can follow
A deduction without records is mostly a strongly held opinion. Keep enough detail that another person can reproduce the number.
- Keep a contemporaneous mileage log. Record the date, starting point, destination, business purpose, and mileage. “Hospital” is a location, not a business purpose.
- Capture beginning and ending odometer readings. The business percentage needs both business miles and total miles.
- Retain actual-expense support. Keep invoices and receipts for fuel, repairs, tires, insurance, registration, interest, parking, and tolls when those expenses are relevant.
- Save the purchase and vehicle records. Keep the purchase agreement, financing documents, placed-in-service date, and GVWR support from the door-jamb sticker or manufacturer.
- Submit accountable-plan reports on time. A spreadsheet built during tax season is better than nothing, but it is not the same thing as regularly substantiating expenses to the S-Corp.
- Document method decisions. Keep the depreciation schedule, Section 179 election, bonus election, and any state adjustments with the permanent tax records for the vehicle.
Frequently asked questions
Should the vehicle be in my name or the S-Corp’s name?
Our default for a mixed-use vehicle is personal ownership with documented S-Corp reimbursement under an accountable plan. It is usually simpler and avoids some company-car fringe-benefit work. Business ownership can make sense when use is overwhelmingly business, but model the payroll, insurance, depreciation, sale, and personal-use consequences before transferring title.
Can a W-2 CRNA deduct hospital mileage?
Usually not on the federal return. Driving from home to a regular job location is personal commuting, and most employees cannot deduct unreimbursed vehicle expenses. Mileage between business locations during the workday may be reimbursable by the employer. Ask about the employer’s accountable plan rather than assuming the personal return will fix it.
Why are there two business mileage rates for 2026?
The rate is 72.5 cents per mile for business driving from January 1 through June 30, then 76 cents per mile for business driving from July 1 through December 31. The IRS made a midyear adjustment after fuel prices increased. The calculator keeps those miles separate so the estimate does not apply one rate to the whole year.1
Can I switch from standard mileage to actual expenses later?
If you own the vehicle and choose standard mileage in its first year of business use, you can generally switch to actual expenses in a later year, although straight-line depreciation rules then apply. If you start with Section 179, bonus depreciation, or accelerated MACRS, standard mileage is generally no longer available for that vehicle. A lease using standard mileage must stay with it for the entire lease period, including renewals.
Can a heavy SUV really be fully deducted in 2026?
Potentially, but not merely because it weighs more than 6,000 pounds. The vehicle must be eligible property, acquired and placed in service, and used more than 50% in qualified business use. Section 179 has a $32,000 SUV cap and taxable-income limitations. Eligible bonus depreciation may cover remaining business basis. Passenger vehicles, state conformity, recapture, and specific vehicle-design exceptions can change the result.
Does putting my logo on the car make every trip deductible?
No. A decal is advertising. It does not turn commuting or personal driving into business mileage. The trip still needs its own valid business purpose.
What about the personal car-loan interest deduction?
For 2025 through 2028, an individual may deduct up to $10,000 of qualifying interest on certain loans used to buy a new personal-use vehicle. The loan must generally originate after December 31, 2024, be secured by a lien, and finance a qualifying vehicle assembled in the United States with GVWR below 14,000 pounds. Used vehicles and leases do not qualify. The deduction phases out above $100,000 of modified AGI, or $200,000 for joint filers, and mixed business and personal interest cannot be deducted twice.7
Before you buy the vehicle for the deduction
Run the decision through the rest of your financial plan. We help 1099 CRNAs coordinate the vehicle, entity, payroll, retirement plan, and tax projection so each piece stops freelancing.
Related reading for 1099 CRNAs
Primary sources
- Internal Revenue Service, Announcement 2026-11, revised optional standard mileage rates effective July 1, 2026.
- Internal Revenue Service, Notice 2026-10, original 2026 mileage rates and 35-cent depreciation component.
- Internal Revenue Service, Revenue Procedure 2026-15, 2026 passenger-automobile depreciation limits.
- Internal Revenue Service, Revenue Procedure 2025-32, 2026 Section 179 limits.
- Internal Revenue Service, Publication 463, Travel, Gift, and Car Expenses.
- Internal Revenue Service, Publication 15-B, employer-provided vehicles and personal-use fringe benefits.
- Internal Revenue Service, Qualified passenger vehicle loan interest rules.
- Internal Revenue Service, Publication 946, depreciation, listed property, vehicle classifications, and recapture.
- Internal Revenue Service, Publication 587, business use of the home.
- Internal Revenue Service, 2026 guidance on the permanent 100% additional first-year depreciation deduction.
This article and calculator are educational estimates, not individualized tax or legal advice. Vehicle deductions depend on ownership, tax home, method elections, business use, income, state law, and documentation. Review the final treatment with a tax professional who can see the full return.