Taxes on an inherited coin collection come in two stages. The estate may owe estate tax on the collection’s value at the previous owner’s death, though most estates fall well below the federal exemption and owe nothing. You, as the heir, owe no income tax when the coins are handed to you, but when you sell them the IRS taxes the gain at collectibles rates of up to 28%, plus a possible 3.8% surtax for higher earners. The saving grace is the stepped-up basis: your gain is measured from the coins’ value at the date of death, not from what the original owner paid.
The Stepped-Up Basis Is the Whole Ballgame
Your tax basis is what the IRS subtracts from the sale price to calculate your gain. For inherited property, that basis equals the fair market value of the collection on the date the previous owner died.1Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent If your uncle paid $50,000 for coins that were worth $500,000 when he died, your basis is $500,000. The $450,000 of appreciation during his lifetime disappears for income tax purposes.
The estate executor can instead elect an alternate valuation date, which sets the basis at the collection’s fair market value six months after death. If the coins were distributed to you or sold before that six-month mark, the value on the date you received them (or sold them) becomes the basis.2Office of the Law Revision Counsel. 26 USC 2032 – Alternate Valuation Executors typically pick the alternate date only when the collection dropped in value after death.
One boundary worth flagging: none of this applies if you received the coins as a gift while the owner was alive. Gifts carry over the donor’s original basis, so a lifetime gift of the same collection would leave you with a $50,000 basis and taxable gain on all the appreciation. Inheritance and gift are very different tax events.
The holding period rule also works in your favor. Regardless of whether you sell the coins a week after inheriting them or a decade later, the IRS treats the holding period as long-term.1Office of the Law Revision Counsel. 26 U.S. Code 1014 – Basis of Property Acquired From a Decedent Selling quickly does not push the gain into ordinary income rates.
Get a Qualified Appraisal Early
A professional appraisal sets the number that drives every calculation downstream. Without one, the IRS can challenge your claimed basis and substitute a lower value, which increases your taxable gain whenever you sell.
For coins with numismatic value beyond their metal content, the appraiser needs actual rare-coin expertise. A qualified appraiser must have either an appraisal designation from a recognized professional organization for the type of property being valued, or at least two years of experience and relevant professional or college-level coursework in valuing that category of property.3Internal Revenue Service. Publication 561 (12/2025), Determining the Value of Donated Property The IRS itself notes that only a trained grader can distinguish between the various mint state and circulated grades, so numismatic training is a genuine requirement rather than a formality.4Internal Revenue Service. Art Appraisal Services
Appraisal fees are deductible as estate administration expenses on the estate tax return.5Office of the Law Revision Counsel. 26 U.S. Code 2053 – Expenses, Indebtedness, and Taxes That deduction only matters if the estate actually owes estate tax, but the appraisal earns its keep either way: it gives you a defensible, documented basis that protects you from overpaying income tax years down the road.
Federal and State Estate Tax
Estate tax is assessed on everything the deceased owned, not just the coins. The collection’s appraised value gets added to all other assets, and the estate pays any tax owed before distributing property to heirs. You typically will not write a check yourself.
For 2026, the federal estate tax exemption is $15 million per individual.6Internal Revenue Service. What’s New – Estate and Gift Tax Married couples can shelter up to $30 million. Only estates exceeding the threshold file IRS Form 706, and only the amount above $15 million faces a federal rate of up to 40%.7Internal Revenue Service. Instructions for Form 706 (Rev. September 2025) Fewer than 1% of estates owe any federal estate tax.
State taxes are another matter. Twelve states and the District of Columbia impose their own estate taxes, some with exemption thresholds as low as $1 million. Five states levy a separate inheritance tax, which is paid by the person receiving the property rather than by the estate. Inheritance tax rates and exemptions usually depend on your relationship to the deceased, with spouses and children often exempt or taxed at reduced rates. Maryland imposes both. State-level taxes can apply even when the estate is nowhere near the federal exemption, so check the rules in the state where the decedent lived.
Selling: The 28% Collectibles Rate
This is where most heirs get caught off guard. Coins are classified as collectibles under the tax code, alongside art, antiques, gems, and precious metals.8Internal Revenue Service. Topic No. 409, Capital Gains and Losses Long-term gains on collectibles face a maximum federal rate of 28%, compared to the 20% ceiling that applies to stocks, real estate, and most other long-term assets.9Office of the Law Revision Counsel. 26 U.S. Code 1(h) – Maximum Capital Gains Rate
The 28% is a ceiling, not a flat rate. If your ordinary income tax rate is below 28%, you pay your ordinary rate on the collectibles gain instead. For anyone in the 32%, 35%, or 37% brackets, the 28% cap acts as a discount from ordinary income rates.
The taxable gain equals the sale price minus your stepped-up basis, minus selling expenses. Say the stepped-up basis is $500,000 and you sell for $550,000 after paying $5,000 in auction commissions. Your taxable gain is $45,000, and at the 28% maximum rate you would owe up to $12,600 in federal tax.
If You Sell at a Loss
If the collection’s value drops after the date of death, you may sell for less than your stepped-up basis. A $20,000 loss can offset capital gains from any source, not just other collectibles. If capital losses exceed capital gains for the year, you can deduct up to $3,000 of the excess against ordinary income and carry the rest forward.8Internal Revenue Service. Topic No. 409, Capital Gains and Losses
One caveat matters here. If you kept the coins purely for personal enjoyment rather than as an investment, the loss is a personal-use loss and is not deductible at all. If you plan to sell, treat and document the coins as investment property from the day you receive them.
The 3.8% Net Investment Income Tax
The gain from selling coins can also trigger the Net Investment Income Tax, a 3.8% surtax that applies when modified adjusted gross income exceeds certain thresholds.10Office of the Law Revision Counsel. 26 U.S. Code 1411 – Imposition of Tax The statute is explicit that this tax is imposed in addition to any other tax, so it stacks on top of the 28% collectibles rate. Combined federal rate: up to 31.8%.
The thresholds:
- Single filers: $200,000
- Married filing jointly: $250,000
- Married filing separately: $125,000
These thresholds are not adjusted for inflation, so they catch more taxpayers every year.11Internal Revenue Service. Questions and Answers on the Net Investment Income Tax The surtax applies to the lesser of your net investment income or the amount by which your MAGI exceeds the threshold. A large coin sale can push a middle-income earner over the line in a single year, so estimate the full tax bill and adjust your estimated payments before you sell.
Reporting the Sale
Report the sale on Form 8949, which feeds into Schedule D of your Form 1040. In the “Date Acquired” column on Form 8949, enter “INHERITED” rather than a specific date.12Internal Revenue Service. 2025 Instructions for Form 8949 – Sales and Other Dispositions of Capital Assets Report the sale in Part II (long-term transactions) with the appropriate box checked. Your basis is the stepped-up fair market value from the appraisal; your proceeds are what the buyer or auction house paid you.
The totals from Form 8949 carry over to Schedule D.13Internal Revenue Service. About Form 8949, Sales and Other Dispositions of Capital Assets If the NIIT applies, you also file Form 8960 to calculate and report that surtax.
Coins Held Inside a Retirement Account
Everything above assumes the coins were held outside a retirement account. If the deceased held them inside a self-directed traditional IRA, the rules change entirely. There is no stepped-up basis for assets inside a traditional IRA. Distributions from an inherited traditional IRA are taxed as ordinary income, not as collectibles gains.14Internal Revenue Service. Publication 590-B (2025), Distributions From Individual Retirement Arrangements (IRAs) You could face rates up to 37% on the full distributed value, with none of the collectibles ceiling or basis step-up.
Most coins are not even permitted inside an IRA. The IRS treats coins and stamps as prohibited collectibles, with narrow exceptions for certain U.S. gold, silver, and platinum coins issued under federal law and for bullion meeting fineness standards held by an approved trustee.15Internal Revenue Service. Investments in Collectibles in Individually-Directed Qualified Plan Accounts If you inherit a self-directed IRA holding coins, talk to a tax professional before taking any distribution.
Cash Sales Over $10,000
If you sell inherited coins for more than $10,000 in cash, the buyer or dealer is required to file Form 8300 with the IRS and the Financial Crimes Enforcement Network.16Internal Revenue Service. IRS Form 8300 Reference Guide This applies to a single transaction or to related installment payments totaling more than $10,000 within a year. The reporting obligation is on the dealer, but the filing means the IRS will independently know about the transaction. Selling through a reputable auction house or established dealer and taking payment by check or wire avoids the Form 8300 trigger, since the requirement applies specifically to cash and cash equivalents.
Records to Keep
The professional appraisal establishing fair market value at the date of death is the single most important document you own. Losing it can leave you unable to prove your basis if the IRS asks questions years later.
Keep the following as well:
- Death certificate or estate records, which anchor the date used for the basis adjustment
- Sale records: auction settlement statements, dealer invoices, receipts showing exact proceeds
- Selling expense documentation: auction commissions, dealer fees, shipping insurance, professional photography or cataloging costs, all of which reduce your taxable gain
- Form 706 or estate filings, if the estate filed an estate tax return, since the reported value can help substantiate your basis
The IRS generally has three years from the date you file your return to challenge the reported gain. That window extends to six years if you underreport gross income by more than 25%.17Internal Revenue Service. Time IRS Can Assess Tax Given that coin collections are unusual enough to attract scrutiny and values are inherently subjective, holding your records for at least seven years is a reasonable minimum. Keeping the appraisal and sale records permanently costs you nothing but a file folder.