Common Inheritance Mistakes — What Beneficiaries Get Wrong

Why This Decision Is Difficult

Inheritance planning tends to arrive at a time when the beneficiary is least equipped to evaluate complex financial decisions. The inheritance often follows the death of a parent or spouse, which means the financial decisions are being made alongside grief, estate administration, and family coordination. The compressed timeline and emotional weight of the period create conditions in which structural mistakes — the kind with long-lasting or permanent consequences — are particularly likely to occur.

A second difficulty is that the most consequential decisions are often invisible as decisions. Rolling an inherited IRA incorrectly may not look like a mistake in the moment — it may look like a routine account transfer that a financial institution facilitates without flagging. Selling inherited real estate before establishing the stepped-up basis may not present as a tax decision at all. These are errors of omission and process, not judgment about markets or returns, which makes them harder for beneficiaries to anticipate.

The size of the inheritance also affects the range of downstream consequences. A substantial inheritance may push the recipient's total estate above estate tax thresholds, change their income bracket for years, require a review of existing beneficiary designations across all accounts, and trigger gift tax considerations if the beneficiary is considering passing assets on. The mistake is often treating the inheritance as a narrower event — "what do I do with this money" — rather than the comprehensive financial transition it may represent.

Common Blind Spots

• Rolling an inherited IRA into a personal IRA. Only surviving spouses may treat an inherited IRA as their own. For all other beneficiaries, this error may trigger immediate income tax on the entire balance. The correct approach is to establish a properly titled inherited (beneficiary) IRA and manage distributions from there.
• Not documenting step-up in basis before selling inherited assets. Assets in taxable accounts typically receive a step-up in cost basis to their date-of-death fair market value, eliminating embedded capital gains. Selling without documenting this basis — and calculating gain from the original purchase price — may produce a substantially overstated taxable gain that is difficult to correct retroactively.
• Making major investment decisions within the first 90 days. Investment allocation decisions made in the immediate aftermath of an inheritance are frequently made without full information about the tax character of the assets, the estate's distribution timeline, or the beneficiary's updated financial picture. These decisions are sometimes made under advisor pressure and are often difficult to unwind without additional tax cost.
• Not updating the beneficiary's own estate plan. A significant inheritance may change total estate value, beneficiary designations, trust structures, and estate tax exposure. Failing to review the estate plan after receiving an inheritance means the existing plan may distribute assets in ways that no longer reflect the beneficiary's situation or wishes.
• Missing required minimum distributions from inherited IRAs. The SECURE Act's 10-year distribution rule for most non-spouse beneficiaries has generated significant confusion, particularly around whether annual distributions are also required during the 10-year window. Missing required distributions triggers a penalty.
• Treating inherited real estate as immediately liquid. Inherited real estate involves title transfer, estate administration, potential capital gains (even after step-up), rental income tax treatment, and co-beneficiary coordination in many cases. Recipients who treat it as cash-equivalent and plan to sell immediately often encounter unexpected delays and tax consequences.
• Not verifying beneficiary designations on the decedent's accounts. Beneficiary designations override a will. An account with an outdated beneficiary designation may pass to an unintended recipient regardless of what the estate documents say. Verifying and, where necessary, contesting beneficiary designations is often among the first steps in estate administration.
• Assuming the estate attorney's work covers all planning needs. The estate attorney manages estate administration — probate, asset transfer, title clearing. That work does not typically include the beneficiary's tax planning, investment decisions, or their own estate plan update. Recipients who assume the estate attorney has handled everything may discover significant gaps later.

Questions Worth Asking

• If I am inheriting an IRA, do I understand the correct titling requirement and the distribution timeline that applies to my situation?
• Has the step-up in cost basis been documented for all inherited taxable assets before any sales occur?
• Do I have at least a 60- to 90-day window before making any significant investment decisions?
• Has my own estate plan been reviewed in light of the inherited assets?
• Do I know whether the decedent had already begun required minimum distributions from any inherited retirement accounts, and how that affects my distribution obligations?
• Are there co-beneficiaries, and do I understand how the assets will be divided and administered?
• Has anyone verified that all beneficiary designations on the decedent's accounts are current and match the estate plan's intent?
• Do I have a tax advisor reviewing the inherited assets before I take any action on them?

What Most People Miss

The pattern that most often produces regret in inheritance situations is not a single bad decision but a compressed sequence of decisions made without the right information. The inherited IRA gets rolled over incorrectly because the financial institution didn't flag the issue. The real estate gets sold before a basis appraisal is completed. The investment allocation is made before anyone has reviewed the estate plan. Each of these decisions might have been made differently with a modest amount of additional time and coordination — but the time was not built into the process.

A second pattern involves the scope of the beneficiary's own planning needs being systematically underestimated. Estate attorneys, financial advisors, and accountants who work on the estate administration are typically focused on the decedent's assets. The beneficiary's own planning — their estate plan update, their tax picture for the year, their beneficiary designation review — tends to fall between the cracks unless someone is explicitly responsible for it.

Finally, the emotional dimension of the inheritance period creates conditions that make structural errors more likely. Decisions made under grief, family pressure, or anxiety about managing money for the first time at a new scale tend to be faster and less thorough than the situation warrants. Building in a deliberate pause — even 30 days — before making irreversible decisions is among the most consistently recommended steps from advisors who specialize in this transition.