Not every document needs to be notarized — but many of the most important ones do. Knowing when notarization is required can save you time, prevent legal headaches, and protect you in high-stakes situations.

Here are ten of the most common situations where you need a notary.

1. Buying or Selling a Home

Real estate transactions are one of the most common reasons people need a notary. Deeds, mortgage documents, title transfers, and closing disclosures typically all require notarization before they can be legally recorded.

Most real estate closings involve a notary signing agent — a notary who specializes in loan documents — who oversees the signing of your entire closing package. Without a notary, your real estate transaction cannot close.

2. Setting Up a Power of Attorney

A power of attorney (POA) gives someone else the legal authority to make decisions on your behalf — financial, medical, or legal. Because POAs carry significant legal weight, they almost always require notarization to be valid.

Banks, healthcare providers, and government agencies will typically refuse to honor a power of attorney that has not been notarized. Getting your POA notarized protects both you and your agent.

3. Creating or Updating a Will

While not every state requires a will to be notarized, many estate planning attorneys recommend it. A notarized will — sometimes called a self-proving will — is easier to probate because the court does not need to track down witnesses to verify the signatures.

Notarizing your will can save your family significant time and legal expense after your death.

4. Signing an Affidavit

An affidavit is a sworn written statement of fact. Courts, government agencies, and legal proceedings regularly require affidavits — and almost always require them to be notarized.

When you sign an affidavit before a notary, you are swearing under oath that the contents are true. The notary's seal confirms that oath was properly administered.

5. Transferring a Vehicle Title

Buying or selling a car, truck, or motorcycle typically requires notarization of the title transfer in many states. Without a notarized title, the DMV may refuse to register the vehicle in the new owner's name.

Mobile notaries can come directly to the dealership or the buyer's and seller's location to handle vehicle title transfers quickly and conveniently.

6. International Travel with a Minor

If you are traveling internationally with a child and you are not accompanied by the other parent, many countries — and airlines — require a notarized parental consent letter. This letter confirms that the absent parent consents to the child traveling.

Without this document, you may be denied boarding or entry at your destination. Getting a notarized travel consent letter is a straightforward process that can prevent serious travel disruptions.

7. Loan and Refinance Documents

Any time you take out a significant loan — a mortgage, home equity line of credit, or refinance — your lender will require notarized loan documents. A notary signing agent coordinates the signing of your loan package and ensures every document is properly executed.

This is one of the most time-sensitive notarizations — loan signings typically have strict deadlines tied to your closing date.

8. Business Agreements and Contracts

While not all business contracts require notarization, many do — particularly those involving real property, large financial transactions, or legal entities. Partnership agreements, articles of incorporation, and certain commercial leases may all require a notary.

When in doubt, consult your attorney — but notarizing a business document adds a layer of legal protection that can be valuable if disputes arise later.

9. Immigration Documents

Many immigration forms and supporting documents require notarization. Affidavits of support, translations of foreign documents, and sworn statements related to immigration status often must be notarized before being submitted to USCIS or immigration courts.

Given the high stakes of immigration proceedings, ensuring your documents are properly notarized is essential.

10. Medical Directives and Healthcare Documents

Advance healthcare directives — also called living wills — specify your medical wishes if you become unable to communicate. Like powers of attorney, these documents often require notarization to be legally recognized by healthcare providers.

Getting your healthcare documents notarized ensures your wishes will be honored when it matters most.

How to Find a Notary When You Need One

Now that you know when you need a notary, finding one is simple. NotaryNearMe connects you with certified, background-checked notaries across all 50 states — available today. Choose a mobile notary who comes to you, or opt for remote online notarization from anywhere.