USDA accreditation comes through USDA-APHIS's National Veterinary Accreditation Program (NVAP), and the path is fixed in federal regulation: a DVM or equivalent degree, a state license or legal authorization where you'll do accredited work, APHIS's initial accreditation training, and a state-approved orientation completed within 3 years before you apply.
You file through your State Animal Health Official as Category I or Category II, wait for APHIS's written authorization, and renew every 3 years.
What USDA accreditation (NVAP) lets you do
USDA accreditation is a federal credential, run by USDA-APHIS through the National Veterinary Accreditation Program (NVAP).
It is not a second license, and it is not a job with the government — it is a designation that sits on top of your state license and authorizes you to perform accredited duties, a defined set of federal functions under 9 CFR 161.1.
The headline function is paperwork that moves animals.
Accredited veterinarians must be able to properly complete certificates for domestic and international movement of animals — within their category — among their other listed functions.
That is the health-certificate work behind interstate moves, international pet travel and livestock shipment.
Accreditation is also publicly checkable.
APHIS publishes a public search tool for locating accredited veterinarians, so clients, colleagues and state officials can confirm your status rather than take it on faith.
What accreditation never replaces is the license underneath it.
Eligibility itself depends on holding a state license or other legal authorization in the state where the accredited work happens — the state-by-state rules live in the guide to state licensure.
Career information, not legal advice
Category I vs Category II: which animals does each cover?
You choose a category when you apply, and the difference is the animals you can perform accredited duties on.
Under 9 CFR 161.1, a veterinarian accredited in Category I is authorized to perform accredited duties only on Category I animals; a veterinarian accredited in Category II is authorized to perform accredited duties on both Category I and Category II animals.
The animal definitions come from 9 CFR 160.1.
Category I animals are all animals except: food and fiber species, horses, birds, farm-raised aquatic animals, all other livestock species, and zoo animals that can transmit exotic animal diseases to livestock.
Category II animals are, simply, all animals.
Read practically: dogs, cats and other companion pets sit inside Category I, so an associate who will only paper dogs and cats can function at Category I.
The first horse, backyard flock, food-animal call or zoo animal that can transmit exotic diseases to livestock pushes you into Category II — which is why mixed-animal, equine and food-animal roles read as Category II jobs.
If equine work is the direction, it helps to understand the caseload before you pick: equine practice covers what the job actually looks like.
The category also changes two things downstream:
| Category I | Category II | |
|---|---|---|
| Accredited duties on… | Category I animals only — companion pets included | All animals |
| APHIS program certifications | Not eligible | Eligible |
| Renewal workload | 3 supplemental training units per 3-year period | 6 units per 3-year period |
Program certifications are the detail most people miss: veterinarians accredited under Category I are not eligible to earn them.
A veterinarian who might want that federal certification layer later should therefore start at Category II.
Steps to apply: eligibility, orientation, and the application
The sequence is mechanical once you know the order — the part people get wrong is the timing, because one requirement carries a look-back window.
Confirm the eligibility baseline
You need a DVM or equivalent degree and a license — or other legal authorization to practice — in the state where the accredited duties will be performed. The requirements attach to the application, so the license or authorization has to be in place before you apply, not after.Complete APHIS initial accreditation training
Initial accreditation requires completion of APHIS's initial accreditation training. This is the federal half of the preparation; the state half comes next.Complete a state-approved orientation — within 3 years before you apply
The regulation requires the orientation program to be completed within 3 years prior to submitting the application, so an orientation done too early has gone stale. Veterinary students can get ahead of this: APHIS offers a two-part virtual orientation for students, but not all states accept it as the official option, so confirm with your state's NVAP coordinator before counting on it.Apply through your State Animal Health Official
Applications go to the State Animal Health Official, who has 14 days to endorse the application or send a written statement explaining why it was not endorsed; APHIS reviews it from there. This is also where your Category I or Category II declaration is made.Wait for written authorization before performing accredited duties
An accredited veterinarian may not perform accredited duties in a state until after receiving written authorization from APHIS. In other words: don't schedule certificate work around the approval letter — schedule it after it.
Renewal: the 3-year cycle and supplemental training
Accreditation is never one-and-done.
It must be renewed every 3 years, and a newly accredited veterinarian's first renewal is measured from completing orientation — not from the first day of practice.
Renewal runs on supplemental training.
Category I veterinarians must complete 3 APHIS-approved supplemental training units by the end of each 3-year period; Category II veterinarians must complete 6.
The training itself is low-friction.
APHIS says each renewal module counts as one unit of training, takes about 1 hour to finish, and is free and can be completed online — and modules from previous periods can be retaken.
The deadline has teeth.
Veterinarians who do not complete the required training within 3 years have their accredited status expire and cannot perform accredited duties until they are reinstated — the movement certificates and other accredited paperwork stop until the credential is back in order.
Two housekeeping rules keep the record clean while you practice.
Notify APHIS when your home or business contact information changes, when one of your veterinary licenses expires or otherwise lapses, and when you need authorization in an additional state.
And because accreditation doesn't automatically follow you across state lines, doing accredited work in a new state means completing an application to that state's Veterinary Official for authorization.
Calendar the first renewal from day one
Why employers ask for USDA accreditation
When a job ad lists USDA accreditation as a requirement, what it is naming is the authority to sign movement paperwork.
Completing certificates for domestic and international movement of animals is accredited work, and accredited duties require the accreditation — and APHIS's written authorization — behind them.
A practice that papers animals across state lines or across borders needs at least one veterinarian who can sign that paperwork.
Species mix decides which category an employer needs.
A dogs-and-cats-only clinic can run its certificate work at Category I; the moment the caseload includes horses, birds, food or fiber species, other livestock, farm-raised aquatic animals or zoo animals that can transmit exotic diseases to livestock, the accredited veterinarian needs Category II.
That is why mixed-animal, equine and food-animal roles read as Category II jobs — food-animal careers covers what that side of the caseload involves.
What the ads don't tell you is how much the requirement weighs — our research found no data on how many postings require accreditation, and the weight it carries tracks each practice's own paperwork load, so it is one more thing to read posting by posting.
Browsing open veterinarian jobs shows you which roles in your species and region name the credential, and how they phrase it.
Reading this from the other side of the desk?
The employer-side guide to hiring a veterinarian covers credential verification and the rest of the hiring process — useful whether you're the applicant or the one deciding.
Putting NVAP accreditation on your resume
On a resume, accreditation belongs in the credentials block next to your license — and the useful part is the specifics.
The category tells an employer at a glance which animals you can paper, so list "USDA Accredited Veterinarian — Category II" rather than a bare "USDA accredited," and add your renewal year so it reads as current rather than open-ended.
Two add-ons carry weight with the right employer.
APHIS program certifications are Category II territory — if you have earned one, list it under the accreditation line.
And if you hold authorization in more than one state, say so: each additional state takes its own application, so a multi-state authorization tells an employer the paperwork is already in place.
Keep the claim accurate, because it is checkable.
APHIS publishes a public search tool for locating accredited veterinarians, and keeping your own record current — including notifying APHIS when a license lapses — is your obligation under the program, not your employer's.
If you're building the credential into a wider job search, the degree, exam and licensing groundwork around it is covered in the veterinarian career hub.