CNA Certification Requirements: Training Hours and How to Apply (2026)
Becoming a Certified Nursing Assistant starts with a federal floor, not a single national exam. Under 42 CFR 483.152, a nurse aide training and competency evaluation program must consist of no less than 75 clock hours of training, including at least 16 hours of supervised practical training, before a candidate can sit for the required competency evaluation. That is a federal minimum set by the Centers for Medicare & Medicaid Services (CMS), current as of September 2026, and states are free to require more. Many do, so the actual number of training hours a candidate needs depends entirely on the state issuing the certification, not on this federal floor alone. Once training is complete, every state requires passing a two-part competency evaluation, typically a knowledge exam and a hands-on skills demonstration, before a candidate’s name is added to that state’s nurse aide registry, which federal law also requires every state to maintain. This guide walks through the federal baseline, why states vary above it, and exactly what to confirm before you apply in your own state.
The Federal Baseline: 75 Hours, Set by CMS
The federal government does not run a CNA exam or issue CNA certifications directly. Instead, CMS regulations require every state to approve a nurse aide training and competency evaluation program before anyone can work as a nurse aide in a Medicare or Medicaid certified facility for more than four months. Per 42 CFR 483.152, that approved program must consist of no less than 75 clock hours of training, and at least 16 of those hours must be supervised practical training, meaning hands-on demonstration of skills on an individual under the direct supervision of a registered nurse or licensed practical nurse. This is a federally set minimum number of training hours, not a target or an average. A state’s own program can require more, but under federal rule it cannot require less.
Why States Often Require More Than the Federal Floor
Because 75 hours is a floor rather than a fixed national standard, individual states routinely set their own training requirements above it, based on each state’s own regulations for nurse aide training programs. The specific number of hours required to sit for the competency evaluation therefore depends on which state a candidate is training and testing in, and that number can differ meaningfully from one state to the next. Rather than publish a specific hour count for any one state here, which would go stale as state requirements change and does not generalize, the reliable move is to confirm the current training-hour requirement directly with the state nurse aide registry or training program in the state where a candidate intends to work.
The Two-Part Competency Evaluation
After completing an approved training program, every state requires passing a competency evaluation with two required parts: a knowledge exam and a skills evaluation, sometimes called a written (or oral) exam and a hands-on skills demonstration. Both parts have to be passed to be listed on a state’s nurse aide registry; passing only one part does not satisfy the requirement. One widely used program built to this two-part structure is Credentia’s NNAAP (National Nurse Aide Assessment Program) exam, used in more than a dozen states and territories as of September 2026. States that contract a different testing vendor still require the same two-part structure, a knowledge component and a skills component, even though the specific format, question count, and time limits can differ from vendor to vendor.
| Requirement | Federal Baseline | What States Commonly Add |
|---|---|---|
| Training hours | No less than 75 clock hours, including 16 hours supervised practical training | Additional hours, set by each state’s own regulations |
| Competency evaluation | Required before registry listing | Specific vendor, format, fees, and retake rules, set by each state |
| Registry | Every state must establish and maintain one | Renewal cycle and inactivity rules, set by each state |
| Testing vendor | Not federally specified | Credentia’s NNAAP in more than a dozen states and territories; other vendors elsewhere |
Registry Listing: The Credential Itself
The CNA credential is, functionally, a listing on a state’s nurse aide registry. Federal regulation requires every state to establish and maintain such a registry, sufficiently accessible for the public and health care providers to use it to confirm someone’s status. A candidate is added to that registry only after completing an approved training program and passing both parts of the competency evaluation, and federal rule also requires states to remove individuals from the registry after 24 consecutive months of performing no nursing or nursing-related services, which is why some states require renewal or reactivation steps for a nurse aide who has been out of the field. Because the registry is state-run, the renewal cycle, any continuing education requirement, and the process for reactivating a lapsed listing are all set by the individual state rather than by federal rule.
Confirm Your State’s Requirements Before You Train or Apply
Every number in this article above the federal 75-hour floor depends on which state a candidate is pursuing certification in. Before enrolling in a training program or applying for the competency evaluation, confirm directly with that state’s nurse aide registry: the exact training-hour requirement, which testing vendor administers the competency evaluation, current fees, and any retake or waiting-period rules. Because CNA certification is regulated state by state rather than through one federal exam, a state’s own published requirements, not a national average or another state’s rules, are the only reliable source for what a specific candidate needs to do.
Ready to prepare for the knowledge portion of your state’s competency evaluation? Try our CNA practice test, or start with a free CNA practice test to see the format before you apply.
Frequently Asked Questions
What is the federal minimum number of CNA training hours?
75 clock hours, per 42 CFR 483.152, including at least 16 hours of supervised practical training. This is a federal floor set by CMS; individual states can and often do require more.
Do all states require the same number of training hours?
No. States are free to set training-hour requirements above the federal 75-hour minimum, and the number varies by state. Confirm the current requirement directly with the state where you plan to train and test.
What does the CNA competency evaluation include?
Two required parts: a knowledge exam and a hands-on skills evaluation. Both must be passed to be listed on a state’s nurse aide registry. Credentia’s NNAAP program, used in more than a dozen states and territories, is one example of this two-part structure.
Is the CNA registry the same in every state?
No. Federal rule requires every state to maintain a nurse aide registry, but each state runs its own, with its own renewal cycle and reactivation rules for nurse aides who have not worked in the field for 24 consecutive months or more.
Sources
- ecfr.gov, 42 CFR 483.152, Requirements for approval of a nurse aide training and competency evaluation program
- ecfr.gov, 42 CFR 483.156, Registry of nurse aides
- ecfr.gov, 42 CFR 483.35, Nursing services (four month rule)
- Credentia, NNAAP Nurse Aide Assessment
Med Preps is an independent test preparation provider and is not affiliated with, endorsed by, or sponsored by Credentia, any state nurse aide registry, or any testing vendor. NNAAP is a registered trademark of Credentia LLC. All exam names and trademarks are the property of their respective owners.
For educational and exam preparation purposes only. Not a substitute for formal clinical training.