Updated August 1, 2026. Quick answer: a power of attorney dies with the principal — the Uniform Power of Attorney Act says so in one line: “A power of attorney terminates when: (1) the principal dies”. The agent’s authority over the bank account ends at that moment, whatever the document says and whatever the bank has been accepting for years. What replaces it is the executor or administrator, appointed by a court, working from a death certificate and letters — not from the POA. Using a POA after a death you know about is where families get into real trouble.
The rule, and the exception that confuses everyone
“(a) A power of attorney terminates when: (1) the principal dies…”
“(d) Termination of an agent’s authority or of a power of attorney is not effective as to the agent or another person that, without actual knowledge of the termination, acts in good faith under the power of attorney. An act so performed, unless otherwise invalid or unenforceable, binds the principal and the principal’s successors in interest.”
— UPOAA §110, read from the Uniform Law Commission’s published act text.
Subsection (d) is why a bank that honours a POA a week after a death, not knowing about it, is protected — and why the transaction still stands. It does not protect the agent who knew. The protection is written for the person acting “without actual knowledge”, and the agent is precisely the person with knowledge. So the honest reading is: the bank may be fine, and you may not be.
What actually happens to the account
It depends on how the account was titled, and that is the same fork that decides most of an estate:
- Payable-on-death or transfer-on-death account: it passes to the named beneficiary outside probate. The POA is irrelevant, and so is the will.
- Joint account with right of survivorship: it passes to the surviving owner by operation of law.
- Account in the decedent’s name alone: it is a probate asset. Nobody can lawfully move that money until a court appoints a personal representative — or, in a small enough estate, until the state’s small-estate procedure is used. Whether your state’s shortcut reaches it, and at what threshold, is computed in the estate settlement roadmap.
The practical sequence: stop using the POA, order certified death certificates, notify the bank in writing, and ask what it needs to release funds. Most institutions will freeze the sole-name account until letters arrive, which is the correct outcome even when it is inconvenient.
The other termination nobody expects: a divorce filing
“An agent’s authority terminates when… an action is filed for the [dissolution] or annulment of the agent’s marriage to the principal or their legal separation, unless the power of attorney otherwise provides.”
— UPOAA §110(b)(3). If your spouse is your agent, filing for divorce ends their authority by default — not the decree, the filing. Worth knowing in both directions: it protects you automatically, and it means a separated couple who still intend to act for each other need to say so in the document.
Before the death, the opposite problem
While the principal is alive, the usual difficulty is a bank that refuses a valid power of attorney — and in most states that refusal carries a court order compelling acceptance plus liability for your legal fees. The remedy, with the verified statutes.
After the death, the clocks that matter are different ones: the deadline calendar computes them from the date of death, and the decedent’s final return is the one families most often miss.
General information, not legal advice. Powers of attorney are state law and the details differ.
The number that surprises people who bought a long time ago
Downsizing is the one home sale where the gain is usually large and the exclusion usually still covers it. A couple who bought in 1994 for $180,000 and sell at $760,000 with $46,000 of selling costs have a realized gain of about $534,000 before improvements. That is above the $500,000 joint cap — but decades of capital improvements are exactly what brings it back under, and most sellers have never added them up.
Improvements are the lever, and the records are the constraint
A new roof, an addition, a replaced HVAC system, new windows, a finished basement: these add to basis. Repainting and repairs do not. Thirty years of improvements on a family home routinely total six figures, and every dollar of it reduces the gain dollar for dollar. The practical problem is documentary, not legal — the seller who kept receipts pays less than the identical seller who did not.
Why downsizers should check the net investment income tax separately
A retiree with modest ordinary income can still be pushed over the 3.8 percent NIIT threshold by the sale itself, because taxable gain is net investment income. The thresholds are $250,000 on a joint return and $200,000 otherwise, written into Section 1411(b) as fixed figures with no indexing. A sale that produces $120,000 of taxable gain on top of $180,000 of other income crosses the joint threshold and picks up 3.8 percent on the part above it.
The move itself may change the tax
Downsizing usually means moving, and sometimes across a state line. Some states tax the gain the federal exclusion just removed. If the sale and the move are in the same year, the order of the two matters, and it is worth checking the destination state before signing.
Related
Methodology
- Exclusion caps, the 2-of-5 test, the nonqualified-use allocation, the reduced-exclusion fraction and the depreciation carve-out are taken from the text of 26 U.S.C. 121. The 3.8 percent rate and its thresholds are from 26 U.S.C. 1411. Both were read on 2026-07-30.
- Section 121 caps and Section 1411 thresholds are written in the statute as fixed dollar amounts with no indexing mechanism, so they are built in. Long-term capital gain brackets ARE indexed annually, so your rate is an input rather than a lookup.
- Figures were computed by two independently written engines that agree to the cent, and the calculator on this page reproduces both exactly.
- Federal only. State treatment varies and some states do not follow the federal exclusion.
Educational estimate, not tax advice, and not a filed return. Federal only. Confirm anything that changes a filing decision with a CPA or tax attorney.
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