A large sum of money hitting your account—whether from an inheritance, a settlement, a business sale, or a lottery ticket—starts a clock on several decisions that get expensive if you get them wrong. The right way to manage a large sum of money is to secure it first, wait before spending any of it, calculate exactly what you owe in taxes based on where it came from, and only then move on to debt, gifts, and long-term planning. Federal income tax can claim anywhere from zero to 37% of the money depending on its source, and the difference between a careful sequence and a rushed one often runs into five or six figures.
What to Do in the First Week
The money needs to be safe before it needs to be smart. FDIC insurance covers up to $250,000 per depositor, per bank, per ownership category.1FDIC. Understanding Deposit Insurance Drop a million dollars into a single checking account and $750,000 of it sits uninsured if that bank fails.
Most banks and brokerages offer cash sweep programs that automatically spread your balance across a network of FDIC-insured institutions, keeping each slice under the $250,000 cap. IntraFi (formerly CDARS) is the largest such network. Ask your bank about sweep options before the money arrives, not after.
Call the bank before a large wire hits. A transfer of $500,000 or more landing without warning can trigger anti-money-laundering holds that freeze the funds for days. A quick call lets the compliance team flag the account so the deposit clears cleanly, and it opens the door to the bank’s wealth management tier if you want it.
If any part of the windfall arrives as cash, deposit it normally. Banks are required to report cash transactions over $10,000, and splitting deposits into smaller amounts to dodge that report is a federal crime called structuring, punishable by up to five years in prison and seizure of the funds, even when the money is entirely legitimate.2Office of the Law Revision Counsel. 31 U.S. Code 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited The routine bank report does not trigger an investigation on its own; trying to avoid it is what creates the problem.
Then wait. Give yourself at least 90 days before doing anything with the money beyond holding it. The psychological pull of a large balance is real, and it pushes people toward buying houses, paying off relatives’ debts, and investing in friends’ businesses before they know their tax bill. A high-yield savings account with sweep coverage is the right home for the money during that pause.
How Much You Actually Owe Depends on the Source
Before you can plan around a windfall, you need to know how much of it is really yours. The IRS treats each source under its own rules.
Inheritances and Gifts
Gifts and inheritances are excluded from your gross income by statute, so the principal itself is not taxable to you.3Office of the Law Revision Counsel. 26 USC 102 – Gifts and Inheritances Any income the inherited property later produces (rent, interest, dividends) is taxable in the year you receive it.
Inherited assets also come with a stepped-up basis: the cost basis resets to the fair market value on the date of death.4Office of the Law Revision Counsel. 26 USC 1014 – Basis of Property Acquired From a Decedent If your parent bought stock for $50,000 and it was worth $500,000 when they died, your basis is $500,000. Sell right away and you owe little or no capital gains tax. Many heirs either overpay or hold assets too long because they don’t know this.
Legal Settlements
Damages for a physical injury or physical sickness are excluded from gross income, including the portion covering lost wages tied to that injury.5Office of the Law Revision Counsel. 26 USC 104 – Compensation for Injuries or Sickness Punitive damages are almost always taxable regardless of the underlying claim.6Internal Revenue Service. Tax Implications of Settlements and Judgments Settlements for emotional distress, discrimination, or defamation that don’t stem from a physical injury are fully taxable as ordinary income.
A single settlement check often bundles taxable and non-taxable pieces. The written agreement should break out the amounts allocated to physical injury versus punitive or non-physical damages, because if it doesn’t, the IRS may treat the entire amount as taxable. That allocation is a negotiating point before the check is cut, not after.
Business Sales, Lottery, and Other Ordinary Income
Proceeds from selling a business, winning the lottery, or collecting gambling winnings fall under the general rule that all income is taxable unless a specific exemption applies.7Office of the Law Revision Counsel. 26 USC 61 – Gross Income Defined For 2026, federal income tax rates range from 10% to 37%, with the top rate applying to income above $640,600 for single filers and $768,700 for married couples filing jointly.8Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
If the windfall came from selling an asset you held for more than a year, the gain qualifies for long-term capital gains rates of 0%, 15%, or 20% depending on your total taxable income. Assets held a year or less are taxed as ordinary income. Selling a primary residence carries a separate exclusion of up to $250,000 in gain, or $500,000 for married couples filing jointly, if you owned and lived in the home for at least two of the five years before the sale.9Office of the Law Revision Counsel. 26 USC 121 – Exclusion of Gain From Sale of Principal Residence
The 3.8% Investment Surtax
On top of regular income and capital gains taxes, a 3.8% surtax applies to investment income when your modified adjusted gross income exceeds $200,000 for single filers or $250,000 for married couples filing jointly.10Internal Revenue Service. Questions and Answers on the Net Investment Income Tax It hits interest, dividends, capital gains, rental income, and other passive income. The thresholds don’t adjust for inflation, so a windfall that generates even moderate investment returns will often trigger it.
Paying Estimated Taxes Without Getting Hit With Penalties
Most windfalls arrive without any tax withheld. That makes you responsible for paying estimated taxes during the year rather than settling up next April. Form 1040-ES payments are due in four installments: April 15, June 15, September 15, and January 15 of the following year.11Internal Revenue Service. 2026 Form 1040-ES If you expect to owe $1,000 or more after withholding and credits, estimated payments are effectively mandatory.
You can avoid the underpayment penalty by paying at least 90% of your current year’s tax liability or 100% of last year’s tax bill, whichever is smaller. If your adjusted gross income last year was above $150,000, that 100% figure rises to 110%.12Office of the Law Revision Counsel. 26 U.S. Code 6654 – Failure by Individual to Pay Estimated Income Tax If your prior-year income was modest, meeting the 100% (or 110%) safe harbor is usually the cheaper path, because that number is far smaller than 90% of the tax on your newly enlarged income.
One detail saves real money when the windfall arrives late in the year. The annualized income installment method on Schedule AI of Form 2210 lets you match estimated payments to when you actually received the income.13Internal Revenue Service. 2025 Instructions for Form 2210 Without it, you’d face penalties for earlier quarters even though the money didn’t exist yet. A tax professional can run the numbers; the point is knowing the option exists before you overpay out of panic.
If You Inherited a Retirement Account
Inheriting a traditional IRA or 401(k) is a separate situation. The money in these accounts has never been taxed, so distributions are taxable as ordinary income when they come out to you.14Internal Revenue Service. Retirement Topics – Beneficiary
If the account owner died in 2020 or later and you are not a spouse, minor child, disabled individual, or someone within 10 years of the deceased’s age, the 10-year rule applies: the account must be emptied by December 31 of the 10th year after the owner’s death.14Internal Revenue Service. Retirement Topics – Beneficiary If the original owner had already begun required minimum distributions, you also have to take annual distributions during those 10 years rather than waiting until the deadline.
Spouses have more flexibility. A surviving spouse can roll the inherited account into their own IRA, delay distributions until the deceased would have reached the required beginning date, or take distributions over their own life expectancy. Inherited Roth IRAs still follow the 10-year rule for non-spouse beneficiaries, but withdrawals of contributions and most earnings come out tax-free provided the Roth has been open at least five years.14Internal Revenue Service. Retirement Topics – Beneficiary
How you spread withdrawals across the 10 years is the strategic question. Emptying the account in one year can push you into the top 37% bracket. Spreading the distributions keeps each year’s taxable income lower and the overall tax bill smaller.
What to Do With the Money After Taxes Are Set Aside
Pay Off High-Interest Debt
Before investing anything, look at what you owe. Paying off an 8% credit card is a guaranteed 8% return, and no investment reliably beats that. A common rule of thumb puts the crossover point around 6%: debt above that rate generally goes first, and debt below it (particularly a low-rate mortgage) often stays in place while the windfall goes to work elsewhere.
Gifts to Family
In 2026, you can give up to $19,000 per recipient without filing a gift tax return or touching your lifetime exemption. Married couples can combine their exclusions for $38,000 per recipient. Gifts above the annual exclusion aren’t taxed on the spot but count against your $15 million lifetime estate and gift tax exemption.15Internal Revenue Service. What’s New – Estate and Gift Tax Unless your lifetime giving will approach eight figures, the annual exclusion mostly matters for paperwork, not for actual tax savings.
Charitable Giving in a High-Income Year
If you itemize, charitable contributions can offset part of the tax hit. Cash donations to public charities (including donor-advised funds) are deductible up to 60% of adjusted gross income. Donating appreciated stock directly avoids capital gains tax on the appreciation while still delivering a full fair-market-value deduction. A donor-advised fund lets you take the full deduction in the year of the windfall and distribute the money to charities over the years that follow, which is useful when income spikes in a single year.
Protecting the Money for the Long Term
Revocable Living Trusts
A revocable living trust lets you keep full control of the assets during your lifetime while setting a clear plan for what happens if you become incapacitated or die. You act as both creator and trustee and can add, remove, or spend assets freely. The point is not tax savings (a revocable trust doesn’t reduce your tax bill) but probate avoidance: assets in the trust pass directly to beneficiaries without a probate court process.
Irrevocable Trusts
An irrevocable trust requires permanently giving up ownership of the assets you place in it. The trade-off is that those assets are generally shielded from lawsuits and creditors and are removed from your taxable estate. The trustee, who cannot be you if the protections are to hold, manages the funds according to the terms set at creation.
Federal and State Estate Taxes
For 2026, the federal estate tax exemption is $15 million per person, and married couples can effectively shield $30 million through portability.15Internal Revenue Service. What’s New – Estate and Gift Tax Most windfall recipients won’t approach that threshold. Roughly a dozen states impose their own estate or inheritance taxes with exemptions as low as $1 million to $2 million, so estate planning can matter at a much lower wealth level depending on where you live.
Titling Assets Into the Trust
Signing the trust document is only half the job. A trust controls only the assets that are formally titled in its name. Bank accounts, brokerage accounts, and real estate deeds all have to be retitled to the trust. This is the step people skip most often, and it’s the one that matters most: an unfunded trust protects nothing.
Who to Hire, and How They Get Paid
Managing a large sum well usually takes at least two professionals: a tax-focused CPA and an estate planning attorney. If the amount is large enough to justify ongoing investment management, a financial advisor rounds out the team. How each of them is paid drives the advice you’ll get.
Fee-only advisors charge you directly, through flat fees, hourly rates, or a percentage of assets under management (commonly around 1%), and don’t earn commissions on the products they recommend. Commission-based advisors are paid by the products they sell, which creates an incentive to steer you toward products that pay them more. Fee-based advisors are a hybrid, charging fees while potentially also earning commissions.
The first call is to a CPA or tax attorney, before you spend or invest anything, so you know your real after-tax number. Estate planning attorneys typically charge between $150 and $550 per hour for complex trust work, so get a written fee estimate at the start. The cost of good professional advice is small compared to what a single tax mistake on a windfall can cost.