Guides
Veterinary practice payroll tax failures and the IRS trust fund recovery penalty
Veterinary practice payroll tax failures, from missed deposits to 1099 relief vets, and how the IRS trust fund recovery penalty can reach owners personally.
What to take away
- The IRS collects employment tax through a trust fund recovery penalty that reaches owners personally, and it applies whether or not the practice meant to underpay.
- Most veterinary payroll failures begin as a deposit timing error, not a calculation error, and stay invisible until the quarterly return is reconciled.
- Treating an associate veterinarian or relief vet as a contractor is the single most common classification mistake in this sector.
- One owner or office manager is usually the responsible person, and that person's personal assets are exposed.
The costly one
The trust fund recovery penalty is the failure that ends practices. Under IRC section 6672, the IRS can assess 100 percent of the employee share of withheld income and FICA tax against any person responsible for collecting, accounting for, and paying it. The penalty equals the tax, not a percentage of it.
The 100% Trust Fund Penalty
100% of employee share
IRC section 6672 assessment
Penalty equals the tax
Personal liability for responsible persons
The employee's share of withheld tax is held in trust. Miss the deposit and the government treats the money as yours to return.
Situation: a practice with 14 staff misses two semiweekly deposits during a cash squeeze, then catches up three weeks later. The deposits are late, and the IRS has a record of the gap.
Prevention: enroll in IRS EFTPS so deposits leave on the due date and whoever signs checks sees the schedule. A practice that deposits electronically and reconciles monthly rarely reaches the penalty stage.
The ones that look fine at first
The relief vet paid on a 1099. Situation: a veterinarian works two Saturdays a month, brings her own stethoscope, and invoices the practice. Consequence: if the IRS applies the common law test and finds an employee relationship, the practice owes the employer share of FICA, federal unemployment tax, and the withheld amounts it never took out. Prevention: run the facts through the IRS worker classification rules before the first invoice, and use a written contract that gives the vet control over how the work is done.
Employee vs Independent Contractor
Employee
- Control
- Practice directs work
- Tax form
- W-2
- FICA
- Employer share owed
- Withholding
- Required
- Unemployment tax
- Practice pays
Independent Contractor
- Control
- Worker controls method
- Tax form
- 1099
- FICA
- Worker pays self
- Withholding
- Not required
- Unemployment tax
- Not applicable
The owner's health insurance run through payroll. Situation: an S corporation owner takes premiums as wages to avoid double taxation. Consequence: the amount is reported as wages but the withholding is skipped, so the 941 and the W-2 disagree. Prevention: have the payroll provider set up the gross-up and the withholding together, and check the first quarter against IRS Publication 15.
The independent contractor receptionist. Situation: a front desk worker is paid by 1099 because she sets her own hours. Consequence: the practice loses the deduction for the misclassified wages and pays the employment tax it should have withheld. Prevention: classify by behavior, financial control, and the written contract, not by the worker's preference.
The ones that only show up later
The seasonal worker who was never added to payroll. Situation: a kennel technician works June through August and is paid from the practice's operating account. Consequence: no withholding, no W-2, and no record of the wages until the following spring, when the practice files a return that omits them. The gap is invisible for a full season. Prevention: add every hire to payroll before the first shift, and run a headcount against the payroll register each month.
Monthly Payroll Compliance Checks
- Add every hire to payroll before first shift
- Run headcount against payroll register monthly
- Keep daily tip log signed by employee
- Confirm work location before first paycheck
The tip credit that was never tracked. Situation: a practice with a grooming or boarding operation pays a lower cash wage and counts tips. Consequence: if the tip credit is not documented, the employer owes the difference and the associated FICA. Prevention: keep a daily tip log signed by the employee.
The multi-state associate. Situation: a veterinarian lives in one state and works in another. Consequence: the practice withholds for the wrong state and files the wrong unemployment return. Prevention: confirm the work location, not the home address, before the first paycheck.
What they have in common
Every failure above shares one trait: the money moved, but the paperwork did not. The practice paid a person and never created the record that the IRS uses to match the payment. That is why these mistakes stay hidden for months or seasons. Nothing breaks, the staff are paid, and the bank balance looks right.
The second common trait is a single point of failure. One office manager runs payroll, signs the checks, and reconciles the bank account. When that person is out for two weeks, deposits slip. Splitting those duties costs nothing and removes the exposure.
Example
An Ohio four-veterinarian practice hired a relief vet in March and paid her $18,000 across the year on a 1099.
A 2026 audit of the 2024 return reclassified the payments. It owed roughly $2,750 in employer FICA, unwithheld employee share, penalties, and interest. The owner faced a section 6672 personal assessment; fixing it in March 2024 would have cost one hour of a bookkeeper's time.
