South Dakota Notary Stamp & Seal Requirements

A notary seal is more than a mark; it’s the visible proof that a South Dakota notary has identified the signer and performed a lawful notarial act. Agencies, title companies, and courts often rely on the seal to accept a document without further inquiry. 

Missing or non-compliant seals can delay closings, cause filings to be rejected, or undermine the evidentiary value of problems that are avoidable with a compliant, legible seal and a careful process.

The Legal Requirement for Seals/Stamps in South Dakota

South Dakota requires every notarial officer to have and use an official seal when acknowledging documents. The seal must be a type approved by the Secretary of State and must include specific content elements. The notary must also indicate the commission expiration date below the seal on the certificate if it isn’t already printed on the form.

What the Law Specifically Says (Statutory Breakdown)

South Dakota law requires a notary’s official seal to contain at least:

• The notary’s name (as commissioned)
  
• The words “South Dakota”
  
• The words “Notary Public”
  
• A border surrounding the imprint
  
• If the seal is a rubber stamp, it must also include the word “Seal”

In addition, for each notarized paper document, the notary must write, print, or stamp “My commission expires” and the expiration date below the seal impression if that language is not already part of the preprinted certificate.

Design & Format Requirements

To ensure consistency and authenticity, South Dakota law defines clear expectations for the design and visibility of notary seals. These rules apply equally to physical stamps, embossers, and electronic seals used in digital notarizations.

While the law allows flexibility in design, notaries are responsible for ensuring their seals are legible, permanent, and properly placed on every document.

Approved Types of Seals

• Rubber stamp seal — Widely used and fully compliant when it contains the required elements, including the word “Seal.”
  
• Embossing seal — Also acceptable as the official notary seal in South Dakota when it contains the required elements. If you use an embosser, consider an impression inker so the raised impression reproduces clearly on scans or copies—this is a best practice, not a statutory mandate.
  
• Electronic seal — Permitted for electronic and remote notarizations when used with an electronic commission and applied in a tamper-evident manner consistent with Secretary of State guidance.

Shape & Size

• Shape is flexible: circle, square, or rectangle are all acceptable.
  
• There is no fixed size in statute; choose a size that leaves a clear, legible, photographically reproducible impression without crowding the certificate.
  

Placement & Legibility

• Affix the seal near the notary’s signature on the certificate.
  
• The seal must be legible and reproducible on photocopies and scans.
  
• Do not place the commission expiration date inside the border of the seal. Place “My commission expires [date]” below the seal if the certificate doesn’t already display it.

Special Notes

Understanding the finer details of South Dakota’s seal rules can help prevent common mistakes and maintain professional credibility. Notaries have several options for applying seals, each with its own considerations for clarity and compliance.

Embossers vs. Stamps

South Dakota treats a properly formatted embossing seal and a rubber stamp as equally acceptable official seals. If you use an embosser alone, ensure the impression shows up on copies; an impression inker helps agencies that require easily reproducible images.

Electronic Seals & Remote Notarization

South Dakota recognizes electronic notarization. An electronic seal must display the same core elements and be securely attached to the electronic record. Notaries should follow the Secretary of State enrollment and technology requirements before performing remote notarizations.

Historical Context

Historically, notaries in South Dakota relied primarily on embossers; however, as document reproduction and electronic filing became more common, rubber stamps became the preferred method for their clarity. Today, embossers and electronic seals are equally accepted, reflecting the state’s modernization while preserving flexibility.

Why Compliance with Seal Standards Protects You

A properly designed, clearly placed seal reduces the risk of:

• Rejected filings by recorders, courts, or agencies
  
• Delayed transactions, especially in real estate or motor vehicle work
  
• Complaints or disciplinary actions related to incomplete or unclear certificates

Your seal is your public signature; consistent, legible use signals professionalism and safeguards the public record.

Best Practices for South Dakota Notaries

To maintain compliance and professionalism, South Dakota notaries should make it a habit to regularly review their seal and procedures. Following these best practices can prevent costly mistakes and build long-term confidence in your work.

1. Choose a Durable, Compliant Device

Opt for a quality stamp or embosser that consistently produces sharp, readable impressions.
South Dakota notaries should invest in a durable, state-approved notary stamp to ensure every notarization meets legal standards.

2. Verify Your Imprint Before First Use

South Dakota requires that the Secretary of State approve the imprint of your seal before you begin notarizing. Make a clean test impression and confirm it includes all required elements.

3. Keep “My Commission Expires” Outside the Seal

Always place the commission expiration line below the seal unless it’s already printed on the certificate. Never include it within the seal border.

4. Ensure Legibility on Copies

If using an embosser, apply an impression inker when the document will be scanned or recorded. This ensures your seal remains visible on reproductions.

5. Secure Your Seal

Your seal, whether physical or electronic, is personal property. Never share it with employers or coworkers, and destroy it immediately if your commission expires or you are terminated or resign.

6. Stay Current with the Secretary of State

Check for updated rules on electronic seals, formatting, or commission renewal requirements before ordering new supplies or performing online notarizations.

Investing in a professional-grade, South Dakota-compliant notary stamp is the simplest way to prevent rejected documents and re-notarizations.

Upholding Professional Integrity Through Compliance

In South Dakota, the notary seal is indispensable. Use a Secretary of State-approved seal rubber stamp, embosser, or electronic seal that clearly displays your name, “Notary Public,” “South Dakota,” and a border, and always include “My commission expires [date]” below the impression when required. Consistent, legible seals and correct placement preserve document validity and demonstrate the professionalism expected of South Dakota’s commissioned notaries.