Most wills are never challenged. But when they are, it’s rarely a total surprise to anyone who knew the family — certain patterns show up again and again, and most of them are avoidable with the right planning.

**1. Lack of capacity.** A challenge alleging the person didn’t understand what they were signing, often raised when a will was executed during declining health. Documenting capacity at the time of signing — sometimes with a contemporaneous medical evaluation — can head this off.

**2. Undue influence.** A claim that someone pressured or manipulated the person into leaving assets in a way they wouldn’t have chosen freely — common when one family member had significantly more access or control than others in the person’s final years. Involving an independent attorney (not someone connected to the favored beneficiary) helps establish that the plan reflects the person’s own wishes.

**3. Improper execution.** Wills have formal signing and witnessing requirements. A will signed without the required witnesses, or executed incorrectly, can be challenged on technical grounds alone — regardless of whether it reflects genuine intent.

**4. A more recent will or amendment surfaces.** Conflicting documents create ambiguity about which version actually controls. Keeping your estate plan current — and destroying superseded drafts — reduces this risk.

**5. Unequal treatment without explanation.** Leaving different amounts to children, or excluding someone entirely, is legally permitted — but doing so without any documented context often invites a challenge from whoever feels overlooked. A brief, calm explanation (sometimes in a separate letter, not necessarily the will itself) can go a long way toward preventing a dispute rooted in hurt feelings rather than any real legal defect.

**The through-line:** most successful challenges exploit gaps in process, not disagreement with the substance. Working with an attorney to execute your plan correctly — and revisiting it as circumstances change — is the most reliable protection against a contest.

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Attorney Advertising. This post is for general informational purposes only and is not legal advice. No representation is made that the quality of legal services performed is greater than that of other lawyers. Laws vary by state and change over time — consult an attorney about your specific situation before acting on anything here.