In Minnesota the seal is the optional part and the certification block is the mandatory one. Minn. Stat. § 326.12, subds. 2 and 3 put your name and the legend licensed professional engineer on the seal, then require a separate block carrying the prescribed certification sentence, your signature, your printed name, the date and your license number. This page covers both halves and the rules around them.
Engineer Seal Stamps compliance desk. Checked against Minn. Stat. § 326.12, subds. 2 and 3 and the Minnesota Board of Architecture, Engineering, Land Surveying, Landscape Architecture, Geoscience & Interior Design. Sources read September 2026.
| Requirement | What the rule says | Source |
|---|---|---|
| Name on the seal | Your name. | Minn. Stat. § 326.12, subds. 2 and 3 |
| Legend on the seal | The words licensed professional engineer. | Minn. Stat. § 326.12, subds. 2 and 3 |
| Certification block | A separate, mandatory block carrying the prescribed certification sentence. | Minn. Stat. § 326.12, subds. 2 and 3 |
| Signature and printed name | Your signature, plus your typed or printed name, in the certification block. | Minn. Stat. § 326.12, subds. 2 and 3 |
| License number and date | Your license number, plus the date the signature was actually applied. | Minn. Stat. § 326.12, subd. 3 |
| Whose signature | Yours, or that of the licensee under whose direct supervision the document was prepared. | Minn. Stat. § 326.12, subd. 3 |
| Documents covered | Plans, drawings, specifications, plats, reports and other documents. | Minn. Stat. § 326.12, subd. 3, with § 326.03, subds. 2 and 3 |
| Size and shape | No published size or shape. A 1-1/2 by 3 inch rectangle is a production convention. | Production record, Minnesota professional engineer stamp |
| Rubber stamp alternative | A rubber stamp facsimile may stand in for the seal on tracings that prints are made from, and on paper a regular seal would damage. | Minn. Stat. § 326.12, subds. 2 and 3 |
| Use after expiry | Unlawful. Stamping or sealing after a license has expired, been revoked or been suspended is prohibited unless it has been renewed or reissued. | Minn. Stat. § 326.12, subd. 2 |
To compare Minnesota with every other jurisdiction, see our table of professional engineer seal requirements by state.
What goes on the seal itself?
Two things: your name, and the legend licensed professional engineer. That is a short face by the standards of most states, and it is short because Minnesota loads the rest of the identification onto the certification block instead.
Because the seal carries no date and no number of its own, it does not age. The information that changes over a career sits in the block beside it, which is where a reviewer looks to tie the document to a live license. The Minnesota professional engineer stamp rules in detail set out how the two pieces relate.
What is the certification block, and why does it carry more than the seal?
It is the mandatory element. The block holds the prescribed certification sentence, your signature, your typed or printed name, the date and your license number, each named separately in subdivisions 2 and 3.
Five items in the block, two on the seal. A document that carries a clean impression but an incomplete block is missing the part the statute treats as required, which is the reverse of how most engineers expect the arrangement to work. Readers new to the arrangement should start with a fuller walk through the Minnesota PE stamp guidelines.
What size is a Minnesota professional engineer stamp?
No size is published. The statute and rules set no diameter, no outline and no proportion, so nothing in the cited sources gives a measurement to meet.
A 1-1/2 by 3 inch rectangle is what this stamp is commonly cut to, and that figure is a production record rather than a rule. The rectangle suits the format because the certification wording and the signature line sit better across a wide face than inside a circle. Minnesota PE stamp requirements set out step by step covers the layout question in more depth.
Which device may be used?
The statute contemplates a regular seal, with a rubber stamp facsimile as the alternative. That facsimile may stand in for the seal on tracings that prints are made from, and on paper a regular seal would damage.
That framing tells you what the alternative is for: sheets that a pressed seal would mark or tear. It is a practical allowance tied to the medium rather than a general statement that one device may stand for another.
What must the signature be accompanied by?
Three things, under subdivision 3: the license or certificate number, the certification itself, and the date the signature was applied. The signature belongs to the licensee, or to the licensee under whose direct supervision the document was prepared.
The date is tied to the act of signing rather than to the project or the issue date on the sheet. That wording matters on a set revised over weeks, because each signature carries the date it was actually applied.
Which documents have to be certified?
Plans, drawings, specifications, plats, reports and other documents. The list comes from Minn. Stat. § 326.12, subd. 3, read alongside § 326.03, subds. 2 and 3, which define the practice.
Reports and plats are named alongside drawings, so the duty is not confined to sheets that go to a permit counter. Any of the listed documents produced in the practice of professional engineering falls inside it.
Can you stamp a document after your license expires?
No. The seal may be used for as long as the license or certificate is alive, which subdivision 2 describes as unrevoked, unexpired and not suspended. It then makes stamping or sealing a document unlawful once the credential has expired, been revoked or been suspended, unless it has since been renewed or reissued.
That is one of the firmer statements a state makes on this point, and it cuts both ways. Renewal or reissue restores the authority to seal, so a lapse is a stop rather than a permanent bar. Nothing in the statute or rules requires you to surrender or destroy the stamp itself.
What happens to your stamp at renewal?
Nothing on the face changes. Licenses renew biennially, and the current renewal cycle counts professional development hours earned from July 1, 2024 through June 30, 2026. Renewal leaves the license number as it was.
Because the seal shows only your name and the legend, a renewal reaches the certification block rather than the die. The number you write in that block is the same one across cycles. What biennial renewal means for your stamp covers the timing side.
Are electronic seals addressed?
Not in the sources read. Minn. R. 1800.4200, subp. 1 is the provision cited on this point, and the fact pack behind this page carries no electronic seal rule, no named technology and no approval process.
So an engineer issuing files electronically in Minnesota is working from the certification requirements in subdivisions 2 and 3 rather than from a separate electronic regime. The content of the block does not change because the document is a file.
What should you have ready before ordering?
Your name as licensed and the exact certification wording your documents use. The seal takes your name and the legend; the block takes everything else, and the wording of that block is what has to be right.
Decide whether you want the certification lines carried on the stamp or applied separately on the sheet. Engineers who sign a high volume of documents usually want as much of the block set in type as possible, leaving the signature and date to be added by hand. The role the Minnesota engineering seal plays in practice is a useful companion read here.
How do you check an impression before use?
Stamp a test sheet on the paper you actually issue on, then read your name and the legend against your license record. Confirm the spelling letter by letter rather than at a glance.
Then check the block. Read the certification sentence against the wording your documents are supposed to carry, and confirm there is physical room for a signature, a printed name, a date and a number without any of them running into the impression.
Minnesota geologists seal under a separate rule; see the Minnesota geologist seal and stamp requirements.
Frequently asked questions
If the seal is optional, why order one at all?
Because the two elements it carries, your name and the legend licensed professional engineer, still have to reach the document, and a die is the fastest way to put them down identically every time alongside the required block.
Does the date go on the seal or in the block?
In the block. Subdivision 3 ties the date to the signature, describing it as the date on which the signature was affixed, and the seal itself carries only your name and the legend.
Can I sign for work I supervised but did not prepare myself?
Yes. The statute names the licensee under whose direct supervision the document was prepared alongside the licensee who prepared it, so supervised work sits inside the certification duty.
Do I have to give up my stamp if my license lapses?
Nothing in the statute or rules requires a seal to be surrendered or destroyed. What is prohibited is using it while the license is expired, revoked or suspended.
Does a new license number come with renewal?
No. Neither the statute nor the rules changes a license number at renewal, so the number you enter in the certification block stays the same from cycle to cycle.
When is the rubber stamp alternative the right choice?
On tracings from which prints are to be made, and on papers a regular seal would damage. Those are the two situations the statute names for it.
Settle your certification wording first, then confirm the spelling of your name against your license record and order from the Minnesota engineer stamps and seals collection.
