Power of attorney in South Dakota: rules, signing, who to name
The short answer
A South Dakota financial power of attorney keeps working after you lose capacity only if it says so in writing. You sign it before a notary; no witnesses are needed. If it is notarized and follows the state's statutory form, banks generally must accept it within set deadlines.
A financial power of attorney lets someone you trust pay your bills, talk to the bank and look after the house if you can't. South Dakota keeps the signing simple, but one wording rule catches people out.
This page walks through that rule, how to sign, and who to name. It is one of our guides to estate planning in each state. If you are new to the idea, start with what a power of attorney does, then come back here.
Is a South Dakota power of attorney durable?
Only if it says so. This is the big one. In South Dakota, a power of attorney is durable only if it contains words showing you want it to keep working after you become disabled (SDCL chapter 59-12).
The statute gives examples: "This power of attorney shall not be affected by disability of the principal," or "This power of attorney shall become effective upon the disability of the principal." Similar words that show the same intent also work.
Without words like these, the document can stop working at the very moment your family needs it. That is worth checking even on an older document you signed years ago.
South Dakota adopted the Uniform Power of Attorney Act in 2020, for documents signed on or after July 1, 2020 (SDCL chapter 59-12). Many states that adopted it made powers of attorney durable by default. South Dakota changed that part on purpose, so don't assume.
The second example above is a "springing" version: it starts only when you become disabled. Our post on springing powers of attorney explains the trade-offs, and durable power of attorney covers why durability matters everywhere.
How do I sign one in South Dakota?
Simply. You sign the document, or someone signs for you in your conscious presence and at your direction. Then your signature is acknowledged before a notary public or another officer who can take acknowledgments (SDCL chapter 59-12).
No witnesses are required. So plan for two people: you and a notary. Many banks have one on staff.
South Dakota's health care document has different rules, with two witnesses or a notary. Our South Dakota medical power of attorney guide covers that one.
Is there a statutory form?
Yes, and using it matters. South Dakota's statutory form is in the law itself (SDCL 59-12-41). You don't have to use it, but there is a strong reason to.
A document that is signed, substantially in the statutory form, and notarized is "South Dakota compliant." That label is what makes banks accept it, as the next section explains.
Will my bank have to accept it?
For a South Dakota compliant document, generally yes. A person asked to accept it must accept it, or ask for an agent's certification, a translation or a lawyer's opinion, within ten business days. Once they receive what they asked for, they have five business days to accept (SDCL 59-12-19).
A bank that wrongly refuses can face a court order and attorney's fees. There are fair exceptions, such as a good-faith belief the document isn't valid, or a report of suspected abuse to state social services or police.
A few small steps help too:
- Ask whoever drafts yours to follow the statutory form, so it is South Dakota compliant.
- Give your bank and investment firm a copy while you are well.
- Keep the original where your agent can reach it, with a note saying where.
What can my agent do, and what can't they?
Your document sets the scope. A broad financial power of attorney usually covers everyday money matters: paying the propane bill, depositing a pension, handling taxes, keeping the house repaired.
Your agent is a fiduciary: legally required to act in your interest and follow what you wrote.
Some powers only exist if your document spells them out. A general grant isn't enough for these (SDCL chapter 59-12):
| Power | Included in a general grant? | What South Dakota requires |
|---|---|---|
| Creating, changing or revoking a trust | No | An express grant; and for a revocable trust, only while you are incapacitated or unavailable, and only as far as both the power of attorney and the trust allow |
| Making gifts | No | An express grant |
| Changing a beneficiary designation or survivorship rights | No | An express grant |
| Reading the content of your emails and messages | No | An express grant |
| Disclaiming property you would inherit | No | An express grant |
| Handing the job to someone else | No | An express grant |
Unless your document says otherwise, an agent who isn't your spouse, ancestor or descendant can't use these powers to benefit themselves.
If you have a living trust, read the first row twice. There is a related South Dakota trap: a trust is irrevocable unless its terms expressly reserve your power to revoke or change it (SDCL 55-3-6). A trust you think of as "revocable" needs to say so in writing. Our post on revocable vs irrevocable trusts explains the difference.
Who should I name as my agent?
The practical questions matter most. Is this person steady with money and paperwork? Do they live near enough to get to the bank, or to the house if the furnace quits in January? Will they keep records and answer your family's questions?
A short checklist when you choose:
- Trust: would you hand them your checkbook today?
- Distance: can they reach your home, your mail and your bank?
- Time: do they have room in their life for this, maybe for years?
- Backup: who steps in if your first choice can't? Our post on having a backup in every role explains why.
Many people name a sister, a nephew or a longtime friend. Our post on naming a friend as power of attorney covers what to talk through first.
Here is a typical case, a composite. Linda is 69 and lives in Rapid City. Her son is in Minneapolis. She names her friend Karen, who already has a key and walks the dog when Linda travels, as her agent, with her son as backup. Her document uses the statutory form and includes the durability sentence.
Some people would like a professional standing by, first or behind a friend. A Kinly membership includes a financial power of attorney written for your state, and Trella Trust Company can be named as your agent or as the backup. You set the order.
A signing checklist for South Dakota
| Step | Why it matters | Done? |
|---|---|---|
| Include durability wording | Without it, the document ends when you lose capacity | |
| Follow the statutory form in 59-12-41 | Makes it "South Dakota compliant," so banks must accept it | |
| Name an agent and a backup | Someone can act if your first choice can't | |
| Add express grants for trusts, gifts or beneficiary changes, if wanted | General powers don't cover these | |
| Sign and acknowledge before a notary | Required; no witnesses needed | |
| Give copies to your bank and your agent | Saves days when it's needed |
Your power of attorney ends at death, when your executor takes over. Our South Dakota probate and small estates guide covers that part.
Common questions
Is a South Dakota power of attorney durable automatically?
No. It is durable only if it contains words showing it should continue after your disability, such as "This power of attorney shall not be affected by disability of the principal." South Dakota changed the uniform act's default on this point.
Does a South Dakota power of attorney need witnesses?
No. It must be acknowledged before a notary public or another officer authorized to take acknowledgments. No witnesses are required.
Does my bank have to accept my South Dakota power of attorney?
If it is "South Dakota compliant" (signed, notarized and substantially in the statutory form), generally yes. The bank must accept it or ask for more information within ten business days, then accept within five business days.
Can my agent change my living trust?
Only if both your power of attorney and your trust allow it, and only while you are incapacitated or not reasonably available. Also check that your trust expressly reserves the power to revoke, since South Dakota trusts are irrevocable otherwise.
Sources
This page is general information, not legal or financial advice. Laws vary by state.