- What to Do With an Inheritance or Windfall: First Steps (you are here)
- Windfall: Why a Lump Sum Does Not Fix a Cash-Flow Problem
When a large sum arrives, the best first move is to slow down. Park it somewhere safe for three to six months. Meanwhile, find out exactly how it is taxed: inherited cash and most inherited property are not income, but inherited IRAs, bonuses, prizes and most settlements are. Then run the money through the same order you use for any paycheck. The biggest costs come from timing and from tax basis, not from investment choices. When you withdraw an inherited IRA, and whether an asset passed at death or as a gift, matter most.
Why it matters: A calm pause avoids the costly mistakes people make with sudden money.
Summary: Park a windfall somewhere safe for three to six months, work out exactly how it is taxed (inherited cash and most inherited property are not income, but inherited IRAs, bonuses, prizes and most settlements are), and then run it through the same order of operations as any paycheck. The biggest costs come from timing and basis, not from investment choice: when an inherited IRA is withdrawn, and whether an asset passed at death or as a gift.
Throughout this volume we follow a single filer earning $75,000 a year, with 2026 taxable income of $51,800 from salary; here that household inherits.
- Inherited property gets a basis equal to its value at death; a gift keeps the giver’s old basis, which on a house bought for $80,000 and worth $400,000 can cost the running household $55,140 in federal tax.
- Most non-spouse heirs must empty an inherited IRA within 10 years; spreading withdrawals saved $6,924 in this chapter’s example.
- Paying off a mortgage earns exactly the mortgage rate, risk-free: at 7.28% it beat investing at an assumed 6% by $52,509 over 20 years, while at 3% investing won by $112,161.
- Invested at once, a lump sum has beaten gradual investing about two-thirds of the time historically (Vanguard).
- Large cash windfalls postponed bankruptcy for Florida lottery winners but did not prevent it (Hankins, Hoekstra and Skiba, 2011): a plan matters more than the amount.
A large sum — an inheritance, a legal settlement, a bonus, the proceeds of a home sale, occasionally a lottery prize — arrives rarely and often alongside grief, excitement, or stress. The financial mistakes people make with windfalls are less about choosing the wrong investment than about deciding too fast, and underestimating the tax.
Park it first. Put the money somewhere safe, liquid and boring — a high-yield savings account, a money market fund holding Treasuries, or Treasury bills — and give yourself a cooling-off period of at least three to six months before any major decision. Keep insured deposits within the $250,000-per-bank, per-ownership-category limit (Part 2.6). At around 4% a year (as of Oct 2026), $200,000 parked for six months earns roughly $200,000 × 4% × ½ = $4,000 while you think. The cost of waiting is close to zero; the cost of a rushed decision is not.
Know what is taxed. The rules differ sharply by source:
- Inheritances — there is no federal inheritance tax, and inherited cash is not income to the heir. Five states (Kentucky, Maryland, Nebraska, New Jersey and Pennsylvania) tax some heirs; all five exempt surviving spouses, and most exempt children. Estate tax, if any, is paid by the estate, not the heir (12.4).
- Inherited investments and property — get a step-up in basis: the heir’s cost basis is the value at the date of death. Stock a parent bought for $50,000 and worth $300,000 at death, then sold by the heir for $310,000, produces a taxable gain of $310,000 − $300,000 = $10,000, not $260,000.
- Inherited IRAs and 401(k)s — no step-up; withdrawals from traditional accounts are taxed as ordinary income. Most non-spouse heirs must empty the account by the end of the 10th year after the year of death. Exempt “eligible designated beneficiaries” — a surviving spouse, the owner’s minor child (until 21), a disabled or chronically ill person, or someone not more than 10 years younger than the owner — can stretch withdrawals over their life expectancy. If the owner had already begun required distributions (10.6), most 10-year heirs must also take an annual minimum in years one to nine; the IRS waived penalties for that through 2024 and enforces it from 2025.
- Home-sale proceeds — up to $250,000 of gain ($500,000 joint) on a main home is excluded if you owned and lived in it for two of the last five years.
- Bonuses — ordinary wages; employers commonly withhold a flat 22% federal rate on them, which may be more or less than your actual bracket (Part 1.6: Paychecks Decoded).
- Lottery and gambling winnings — fully taxable; federal withholding on large prizes is 24%, which is often far less than the tax actually owed.
- Settlements — compensation for physical injury or physical sickness is generally tax-free; punitive damages, interest, lost wages and most other awards are taxable.
Two sections of the tax code set the basis of property you receive without buying it. Under section 1014, property acquired from someone who has died takes a basis equal to its fair market value at the date of death (or the estate’s alternate valuation date). Under section 1015, property received as a gift keeps the giver’s own basis for measuring a gain. The difference is the whole of the gain that built up during the giver’s life: inherited, it is never taxed as income; gifted, it is taxed when the recipient sells.
The usual justification is that death is already a taxing event, through the estate tax, so the income tax should not reach the same appreciation again. With the estate tax exclusion at $15,000,000 per person in 2026, very few estates owe estate tax, so for most families the step-up simply erases the lifetime gain. Stock bought for $50,000 and worth $300,000 at death has a $300,000 basis for the heir; the same stock given a month before death has a $50,000 basis, and a sale at $300,000 produces a $250,000 gain, $37,500 at the 15% rate before any net investment income tax.
The rule cuts both ways: basis is value at death, so property that has fallen below its purchase price steps down, and the owner’s unrealized loss disappears. That is why it can make sense for an older owner to sell losing positions during life and hold winners. In community-property states, both halves of a couple’s community property get the new basis at the first death, not just the half owned by the spouse who died. Retirement accounts get no step-up at all, because their pre-tax money has never been taxed.
The rules above assume a non-spouse adult heir, a traditional IRA and a domestic giver. These situations change the answer.
| Situation | What changes | Why | Number or rule |
|---|---|---|---|
| You inherit a Roth IRA | Leave it invested until the 10th year | Roth owners have no required distributions, so heirs under the 10-year rule have no annual minimum, and qualified withdrawals are tax-free | Empty by December 31 of the 10th year after death |
| A surviving spouse inherits an IRA | Can treat it as their own, with required distributions on their own schedule | Spouses are eligible designated beneficiaries | A spouse under 59½ who needs cash may keep it as an inherited IRA first, since distributions after death escape the 10% additional tax |
| The heir is the owner’s minor child | Life-expectancy withdrawals until 21, then the 10-year clock starts | Minor children are eligible designated beneficiaries only until majority | Age 21 under the federal rules |
| A spouse dies in a community-property state | The survivor’s half also gets a new basis | Both halves of community property are stepped up if at least half is in the estate | A home bought for $200,000 and worth $700,000 gets a $700,000 basis, not $450,000 |
| A parent gives you an asset before death | No step-up; you keep the parent’s basis | Section 1015 carryover basis | See The Costliest Mistake below: $55,140 on one house |
| A taxable settlement paid partly to a contingency-fee lawyer | You are taxed on the lawyer’s share too | The fee is treated as your income assigned to the lawyer (Commissioner v. Banks, 2005) | Illustrative: a $300,000 award with a one-third fee is $300,000 of income though you receive $200,000; unlawful-discrimination claims get an offsetting deduction |
| An inheritance or gift from a foreign relative | Not taxed, but must be reported | Form 3520 is an information return | Required when gifts or bequests from foreign individuals or estates exceed $100,000 in a year; penalties for not filing are steep |
| A parent gives you more than $19,000 in a year | Nothing for you; the parent files a gift tax return | The donor, not the recipient, is responsible for gift tax | $19,000 per recipient in 2026; tax applies only after the giver’s $15,000,000 lifetime exclusion is used |
Then apply the order of operations. A windfall is just a very large paycheck run through the same priorities as any other dollar (Part 1.8: The Financial Order of Operations: Where the Next Dollar Should Go). The difference is that it can complete several steps at once, and the plan should be written down before the money is touched.
A homeowner inherits $150,000, exactly the balance on a mortgage with 20 years left. Option A: pay it off and invest the freed-up monthly payment for 20 years. Option B: invest the $150,000 now and keep making the payment. The monthly cash out of pocket is identical, so the only question is which ends with more. Illustrative assumptions: investments earn 6% a year after tax, compounded monthly; the interest is not deducted (most filers take the $16,100 standard deduction); three mortgage rates, the last being the 30-year average of 7.28% on Oct 1, 2026.
Payment = $150,000 × i ÷ [1 − (1 + i)−240], i = rate ÷ 12. A = payment × [(1 + 0.005)240 − 1] ÷ 0.005. B = $150,000 × 1.005240 = $496,531.
| Mortgage rate | Monthly payment | (A) Pay off, invest the payment: value at 20 years | (B) Invest the lump sum | Better, by (at 6%) | Better, by (if investments earn 4%) |
|---|---|---|---|---|---|
| 3.00% | $831.90 | $384,370 | $496,531 | Invest, $112,161 | Invest, $28,269 |
| 5.00% | $989.93 | $457,390 | $496,531 | Invest, $39,141 | Pay off, $29,695 |
| 7.28% | $1,188.29 | $549,040 | $496,531 | Pay off, $52,509 | Pay off, $102,448 |
Flip point: the two options tie exactly when the investment return equals the mortgage rate, because the payment stream is worth $150,000 when discounted at the mortgage rate. Paying off a mortgage is therefore a guaranteed return equal to its rate, while the 6% is an expectation that can fail for years at a time. The fair comparison for a risk-free payoff is a risk-free yield, around 4% on Treasury bills and high-yield savings as of Oct 2026: by that test even a 5% mortgage beats parking the cash, though Part 1.8 still ranks prepaying a loan below about 5% behind the HSA, IRA and 401(k), whose tax breaks add to their return, and treats 8% or more as a clear payoff. Two things the arithmetic leaves out: home equity is hard to get back in an emergency, so keep the emergency fund and employer match funded first; and a payoff cannot be undone if rates later fall.
The standard view: once the parking period is over and you have chosen a long-term allocation, invest the windfall at once. Vanguard’s 2023 study of rolling periods from 1976 to 2022 found that a lump sum beat cost averaging, investing in installments over months, roughly two-thirds of the time, and for a 60/40 portfolio left about 1.8% more wealth after one year than spreading the purchases over three months. Its assumptions: markets rise more often than they fall, so money waiting in cash tends to miss gains, and the investor will hold through a decline. The alternative: cost averaging over 6 to 12 months for someone who would otherwise sit in cash, or who would sell in panic if a crash hit the week after investing. The same study found cost averaging still beat staying in cash about 69% of the time, and its authors note that it can limit the drawdown and the regret of a bad start, helping the investor stay with the plan. What the evidence says: on average a lump sum wins; cost averaging buys emotional insurance at an expected cost. What remains open: how to weigh that cost against the risk of abandoning the plan is personal, and no study settles it for an individual.
Expect visitors. A visible windfall attracts salespeople, “advisors” paid by commission, and relatives with needs. Two defenses work: a rule that no request gets an answer for 30 days, and a single fee-only fiduciary adviser (Part 7.9) who is paid by you, not by the products sold. Decide in advance how much, if anything, you will give, and say no to everything outside that number. Scammers also target known windfall recipients (13.2).
Six questions on this chapter. Decide on your answer first, then click “Reveal Answer.”
1. A parent bought shares for $40,000, and they were worth $250,000 at the parent’s death. The heir later sells them for $265,000. What taxable gain does the heir report?
- $210,000
- $15,000
- $265,000
- $225,000
Reveal Answer
Answer: B. Inherited investments get a step-up: the heir’s basis is the value at death, so the gain is $265,000 − $250,000 = $15,000. $225,000 uses the parent’s cost, $210,000 is the gain during the parent’s life, $265,000 assumes zero basis. (Part 11.7: Windfalls and Inheritances: What to Do When a Large Sum Arrives)
2. A single parent inherits $150,000 in cash, and within a week two relatives ask for loans. What is the best first step?
- Lend to the relatives now, before the money is spent elsewhere
- Invest it all in an index fund now, since time in the market wins
- Park it in Treasury bills for three to six months, then decide
- Pay off the mortgage at once to remove the largest monthly bill
Reveal Answer
Answer: C. Park it somewhere safe and liquid for a three-to-six-month cooling-off period and answer no request for 30 days; then run it through the order of operations. Windfall mistakes come from deciding too fast. (Part 11.7: Windfalls and Inheritances: What to Do When a Large Sum Arrives)
3. A father bought land for $30,000 and gave it to his daughter when it was worth $200,000. After his death she sells it for $210,000. What taxable gain does she report?
- $10,000
- $170,000
- $0
- $180,000
Reveal Answer
Answer: D. A gift keeps the giver’s basis (section 1015), so the gain is $210,000 − $30,000 = $180,000. $10,000 wrongly treats the gift-date value as basis, $170,000 is only the gain up to the gift, and $0 assumes an inherited step-up. (Part 11.7: Windfalls and Inheritances: What to Do When a Large Sum Arrives)
4. An heir can either pay off a mortgage and invest the freed-up payment, or invest the lump sum and keep paying the loan. Ignoring taxes and with the same monthly compounding, at what investment return do the two choices end with the same wealth?
- A return equal to the mortgage rate
- A return equal to the Treasury bill yield
- A return two points above the mortgage rate
- A return equal to half the mortgage rate
Reveal Answer
Answer: A. The payment stream is worth exactly the loan balance when discounted at the mortgage rate, so the two options tie when investments earn that rate; above it investing wins, below it payoff wins. Paying off the loan therefore earns its rate with certainty. (Part 11.7: Windfalls and Inheritances: What to Do When a Large Sum Arrives)
5. Worked problem: An heir with a $150,000 mortgage at 4% (20 years left) pays it off and invests the freed-up payment at 6% a year (monthly compounding). What is the payment, and what does the investment reach?
Reveal Answer
Answer: Payment = $908.97. FV = $908.97 × [(1.005)240 − 1] ÷ 0.005 = $419,982.
6. Worked problem: The alternative is to invest the $150,000 now and keep paying the mortgage. What does the lump sum reach, and which is better?
Reveal Answer
Answer: FV = $150,000 × 1.005240 = $496,531, which is better than $419,982 by $76,549, because the mortgage rate is below the assumed return.
- Publication 551 — Basis of inherited property
- Topic 701: sale of your home — Home-sale exclusion
- Instructions for Forms W-2G and 5754 — Gambling withholding
- Required minimum distribution FAQs (beneficiaries) — 10-year rule
- Notice 2024-35 — Inherited-IRA penalty relief
- Publication 15 — Supplemental wage withholding