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What to Do with an Inheritance: AI Scenario Guide

What to do with an inheritance? Skip generic lists. Use AI for personal scenario modeling on debt, taxes, and goals - with prompts and pitfalls that matter.

8 min readBeginner

Two paths for what to do with an inheritance. Path A: grab the same checklist every site reprints – pay debt, emergency fund, invest – and guess the numbers. Path B: feed anonymized balances, rates, and goals into a model and force side-by-side scenarios. Path B wins for most people. Vague “should I?” becomes “if I kill the 22% card first I free $X/month and still hit the house fund by year Y.” Generic lists skip your bracket, the inherited-IRA clock, and state rules. AI is not a CPA or CFP. It does make the homework before that meeting fast.

Money landed in a week you did not plan. The spreadsheet is cold; the decision is not. That gap is why people either freeze or spend once and regret it – numbers alone never carry the whole weight.

Quick tax frame (as of IRS figures for 2025-2026 deaths): no federal inheritance tax. The federal estate tax hits the estate only above high thresholds – $13.99 million for 2025 deaths and $15 million for 2026 (IRS estate tax page). States can still levy estate or inheritance tax at much lower levels. Cash, brokerage, real estate, and retirement accounts follow different playbooks. Non-spouse inherited IRAs/401(k)s from deaths on or after 1/1/2020 usually must be emptied within 10 years; if the original owner had already reached RMD age, annual RMDs generally apply in years 1-9 (enforcement clarity around 2025), with the account empty by the end of year 10 – see Fidelity’s inherited IRA RMD notes. Spouses often get more flexible rollover options than non-spouse beneficiaries. Inherited assets typically receive a step-up (or step-down) in basis to date-of-death FMV, which can erase capital gains on lifetime appreciation when you sell later (step-up basis explainer).

Hands-on: AI workflow for what to do with an inheritance

Tooling: a capable chatbot (ChatGPT, Claude, or similar) plus a plain spreadsheet. Never paste SSNs, full account numbers, or unredacted legal docs. Round numbers. Labels like “Card A 22% $8k.” Turn off training on the chat if the product lets you.

Step 1 – Inventory dump (anonymized)

List every piece: cash and where it sits, brokerage FMV (and known basis if any), rough real-estate equity, inherited IRA/401(k) balance and type (traditional vs Roth), debts with rates and minimums, income-bracket guess, state, top 3 goals (debt freedom, house, retirement acceleration, education, a memorial gift/trip).

Prompt:
Act as a careful financial analyst, not a licensed advisor.
Here is my anonymized inheritance inventory and personal snapshot:
[paste redacted list]
1. Categorize each asset by tax treatment (cash, stepped-up taxable brokerage, traditional inherited IRA under 10-year rule, Roth, real estate).
2. Flag immediate deadlines (probate, disclaimer window ~9 months, RMD calendar if any).
3. Output a one-page priority matrix: safety / liquidity need / tax drag / emotional weight.
Ask clarifying questions only if critical. Do not invent legal rules.

You want a clean table and a short “verify with tax pro” list. AI’s job is to surface what you must double-check – not to bless the plan.

Step 2 – Scenario factory

Three to five concrete forks. Not one fuzzy plan.

Prompt:
Using the inventory above, model these scenarios over 5 and 10 years.
Assume [your approximate marginal rate], inflation 2.5%, stock return 7% nominal, bond/HYSA 4%. Show ending net worth, cash flow freed, and tax notes. Mark every assumption.
A) 100% high-interest debt payoff first, then emergency fund to 6 months, rest in broad index.
B) Minimum debt payments, max emergency fund + HYSA park, invest remainder.
C) Split: kill debt over 18% APR, keep mortgage, 50/50 invest vs house down-payment cash.
D) [your custom: e.g., fund 529 + modest memorial trip + rest invest]
For any traditional inherited IRA portion, sketch 10-year level withdrawals vs back-loaded and rough tax hit.
Also compare: selling stepped-up brokerage shares (capital gains only on post-death growth) vs liquidating traditional inherited IRA dollars (ordinary income). Which path is cleaner for my bracket?
Output a markdown comparison table + plain-English winner for my stated goals + risks I am under-weighting.

Paste the table into a sheet. Tweak rates yourself. The model does arithmetic and structure. You own the assumptions.

Pro tip: After the first reply, send “Recalculate scenario A if I get a $12k tax bill from year-1 IRA distributions and my rate jumps a bracket. Show the new monthly cash impact.” Iteration is where this actually pays off.

Step 3 – Document and deadline helper

Paste only non-sensitive excerpts (or summaries you wrote) of beneficiary letters. Ask for a plain checklist: forms you likely need, typical timelines, questions for the custodian tomorrow. Cross-check every date against the paperwork and firm guides such as Fidelity’s inheritance overview.

Basis on a house or stock lot: have the model explain the concept, then verify with a tax pro. Community-property states and alternate valuation elections add wrinkles the chat will not reliably catch.

Common pitfalls when AI meets inherited money

  • Hallucinated or stale rules – Old estate exemptions. Missed annual RMDs in years 1-9 for many non-spouse inherited-IRA cases once the owner was past RMD age. Demand sources. Open the IRS or custodian page yourself.
  • Privacy overshare – Chat logs can persist, feed training (unless you opt out), or surface in a breach or legal process. Keep data coarse. An advisor session is not the same threat model.
  • Federal-only math – Default scenarios often assume single filer, no state inheritance tax, no marital-property twists. State + filing status must be explicit – or the table lies politely.
  • Missing the stock-vs-IRA tax cross – Step-up can make selling inherited brokerage shares relatively clean (gains mostly post-death). Draining a traditional inherited IRA is ordinary income on the way out, on a 10-year clock. Models love cash-in/cash-out charts and under-weight that interaction.
  • Emotional override – The model will chase pure math. It will not tell you the family cabin for five more years may beat the IRR on selling tomorrow. You still decide.

One more trap: treating the first polished paragraph as a plan. Force the comparison table every time.

Nobody publishes a clean scoreboard for “how accurate is model X on New Jersey inheritance tax + community-property basis + your filing status.” Accuracy is an open question without live retrieval and a human who knows your state. Treat multi-state output as a hypothesis.

What “good” looks like after a weekend of this

You walk into a 45-minute CPA or advisor call already dangerous in a good way: redacted inventory, three quantified scenarios with taxes roughly sketched, a short list of legal/tax open questions, and cash parked so it is not earning zero while you think. A lot clearer than “I think I should pay the cards.” People who only reread the same five blog tips still freeze – or buy one loud thing. The AI path shrinks decision time and surfaces the IRA clock and basis issues early.

Results still hinge on prompt quality and honest assumption updates. Finance answers conflict across tools. For large dollars, run the same prompt on two models and look for agreement on structure, not cents.

When NOT to use this AI approach

Skip DIY modeling – or keep it as study notes only – when the estate is in contested probate, you are executor with duties to multiple heirs, special-needs beneficiaries or distribution-standard trusts are in play, business interests or concentrated low-basis stock need advanced elections, or one bad tax move costs more than a few hours of professional fees. Hire counsel first. Skip live account-linking features for a one-time windfall until you understand the data-sharing terms; manual redacted prompts are safer.

Is a chatbot a calculator with a prose layer, or something closer to advice? It has no fiduciary duty and no E&O policy. That line is the whole game.

FAQ

Is there federal tax on the inheritance I receive?

Usually no federal inheritance tax. The estate may owe estate tax only above the high exemption ($13.99M for 2025 deaths, $15M for 2026). You can still owe income tax on traditional inherited-IRA distributions, and capital gains after the step-up if assets keep rising. Check your state.

Can I just ask ChatGPT “what should I do with $200k inheritance” and follow it?

No. Bare prompt, no inventory → the same generic list every finance blog already printed. Theater. Example: “$200k, what now?” never sees your 22% card, traditional vs Roth inherited IRA, or a state inheritance tax. Use the structured scenario prompts above, then verify tax and legal pieces with someone licensed where you live. GenAI personal-finance answers can be inconsistent, biased, or hallucinated – researchers and practitioners treat them as a starting draft, not a directive. Privacy rule still holds: no SSNs, no full account numbers.

What’s the smartest first parking spot while I model options?

High-yield savings, a money-market fund, or short Treasuries/CDs at a reputable bank or brokerage – the same parking spots Fidelity and Vanguard push while you pause big moves. Protect principal. Buy a few months to run scenarios, talk to family if needed, and book the tax meeting. Do not leave a large sum in non-interest checking “for now.” When the comparison table is done, execute in stages if markets or estimated tax hits make a lump sum uncomfortable. Remember the stock-vs-IRA cross from Step 2: parking cash is temporary; the permanent choice is which bucket you draw from first under your bracket.

Open a new chat. Paste a redacted inventory and the Step 1 prompt. You can have a clearer picture of what to do with an inheritance before lunch tomorrow – then book the professional review for everything AI cannot sign off on.