The tax treatment of contingent value rights has no single answer, because the IRS has never issued guidance dedicated to them. How your CVR gets taxed depends on three questions answered in sequence: how the instrument is legally classified, whether the transaction is treated as open, closed, or an installment sale, and how much of each payment gets recharacterized as interest. The same $50,000 payment can carry federal tax anywhere from $0 to roughly $18,500 depending on those answers.
A CVR is a promise from an acquiring company to pay former shareholders of the target more money if a specified event happens within a set window. In biotech deals the trigger is often FDA approval; elsewhere it might be a revenue milestone, a lawsuit outcome, or an asset sale. You usually receive one CVR per old share alongside cash and stock in the acquirer. The CVR bridges a valuation gap: you get paid now for the certain value and keep the upside on the uncertain piece.
The Three Classifications That Drive Everything
The tax code doesn’t define “contingent value right,” so the IRS and courts fit each CVR into an existing category. Three dominate:
- Deferred payment for your stock. The CVR is treated as part of the sale price for your original shares. Payments can qualify for capital gain treatment, with the time-value portion recharacterized as interest.
- Separate contract right. You received a standalone right and are now collecting on it. Payments are ordinary income, because capital gain under IRC §1222 requires a sale or exchange of a capital asset, and collecting scheduled payments on a contract isn’t one.
- Contingent payment debt instrument. The rules under Treasury Regulation §1.1275-4(b) apply, gain on payments is ordinary income, and gain on selling the instrument is ordinary as well.
Long-term capital gains cap at 20%. Ordinary income can hit 37%. The difference between classifications is the difference between the two rates, applied to every dollar of payment you receive.
Marketable vs. Non-Marketable CVRs
Two structural features push the analysis in opposite directions. Transferable CVRs trade on a public exchange and have a quoted price at any moment. Non-transferable CVRs are locked to the original recipient and cannot be sold.
That distinction usually decides whether the CVR has an ascertainable fair market value at receipt, which in turn decides whether the transaction is closed or open. A marketable CVR almost always has an observable price. A non-transferable CVR tied to a speculative binary event may not.
The Installment Method Comes First
Under IRC §453, the installment method is the automatic starting point for any sale where at least one payment arrives after the close of the tax year of the sale.1Office of the Law Revision Counsel. 26 USC 453 – Installment Method If your CVR is treated as deferred payment for your stock, installment reporting applies unless you elect out or an exception disqualifies you.
Under the installment method, each payment splits into three pieces: return of basis (tax-free), capital gain, and imputed interest (ordinary). The ratio of gain to total contract price determines the gain portion of each payment. For contingent payment sales, Treasury regulations lay out how to allocate basis when the total price isn’t yet known.2eCFR. 26 CFR 15a.453-1 – Installment Method Reporting for Sales of Real Property and Casual Sales of Personal Property
One important exception: the installment method is not available for stock or securities traded on an established market. If your original shares were publicly traded, installment treatment likely doesn’t apply, and the analysis moves to closed or open transaction treatment. You can also affirmatively elect out by reporting the full gain on your return for the year of the exchange. The election is due by the extended due date of that return, and revoking it later requires IRS consent.1Office of the Law Revision Counsel. 26 USC 453 – Installment Method
Closed Transaction Treatment
When installment doesn’t apply or you elect out, the next question is whether the CVR has an ascertainable fair market value at receipt. If it does, the transaction is closed. You value everything you received and recognize gain or loss immediately.
Under IRC §1001, gain equals the total amount realized (cash, stock, and the fair market value of the CVR) minus your adjusted basis in the shares you gave up.3Office of the Law Revision Counsel. 26 USC 1001 – Determination of Amount of and Recognition of Gain or Loss If you held the original stock as a capital asset for more than a year, the gain is long-term capital gain, reported on Form 8949 and summarized on Schedule D.4Internal Revenue Service. About Form 8949, Sales and Other Dispositions of Capital Assets
The value you assign to the CVR at receipt becomes your basis in it. Later payments reduce that basis dollar for dollar after subtracting imputed interest. Once cumulative payments exceed basis, additional payments are capital gain. Marketable CVRs almost always land here, because the exchange price gives the IRS an observable value.
Open Transaction Treatment
Open transaction treatment is the exception. The Supreme Court established the doctrine in Burnet v. Logan: when contingent consideration has no ascertainable fair market value, the taxpayer can apply payments against basis first and defer gain until basis is fully recovered.5Justia U.S. Supreme Court. Burnet v. Logan, 283 U.S. 404 (1931) Treasury regulations narrow the path further, stating that “only in rare and extraordinary cases will property be considered to have no fair market value.”6eCFR. 26 CFR 1.1001-1 – Computation of Gain or Loss
Winning this position requires showing the CVR’s value is genuinely impossible to determine, not merely difficult. A non-transferable CVR tied to a speculative, binary contingency with no comparable market transactions may qualify. A CVR with a trading price will not.
Under open treatment, the CVR itself carries no basis. Each payment (net of imputed interest) reduces the basis of your original stock. No capital gain is recognized until cumulative payments pass that original basis. After that, every dollar is capital gain.
Imputed Interest Comes Out of Every Path
Whichever classification wins, a slice of each CVR payment is likely to be recharacterized as ordinary interest income. The code assumes that payment delayed is payment that partly compensates for the delay, and that compensation is interest.
IRC §483 applies to payments on a contract for the sale of property that fall due more than one year after the sale and carry no stated (or insufficient) interest. It recharacterizes part of each payment as unstated interest using the applicable federal rate.7Office of the Law Revision Counsel. 26 USC 483 – Interest on Certain Deferred Payments IRC §1274 performs a parallel function for transactions structured as debt instruments, discounting all payments to present value at the AFR to determine the imputed principal amount.8Office of the Law Revision Counsel. 26 USC 1274 – Determination of Issue Price in the Case of Certain Debt Instruments Issued for Property The two sections don’t overlap: §483 explicitly steps aside for instruments already covered by §1274.
The practical effect is the same either way. Part of every payment is taxed at ordinary rates up to 37% rather than at capital gains rates. That interest slice is calculated and taxed even before you’ve recovered your full basis, which catches some taxpayers off guard.
Basis and Holding Period
Getting the basis math right is the mechanical core of CVR taxation, and errors compound over the life of the instrument.
For a closed transaction CVR, your basis starts at the fair market value you recognized at receipt. Each payment reduces basis by its non-interest portion. When basis hits zero, everything after is capital gain.
For an open transaction CVR, the instrument has no basis of its own. Each non-interest payment reduces the basis of the original stock you surrendered.
For an installment sale CVR, the regulations spread your original stock basis across the expected payment period. If the CVR has a fixed term, basis is allocated ratably over that term. If a year’s payment falls short of the allocated basis, the unused portion rolls forward rather than creating an immediate loss.2eCFR. 26 CFR 15a.453-1 – Installment Method Reporting for Sales of Real Property and Casual Sales of Personal Property
Under IRC §1223, when property’s basis is determined by reference to the basis of other property, the holding period of that other property tacks on.9Office of the Law Revision Counsel. 26 USC 1223 – Holding Period of Property If you held the original shares more than a year before the merger, the capital portion of CVR payments qualifies for long-term capital gains rates of 0%, 15%, or 20% depending on income.10Internal Revenue Service. Topic No. 409, Capital Gains and Losses
If the CVR Expires Worthless
If the milestone never triggers, or triggers only enough to pay less than your basis, the outcome depends on how the transaction was classified.
For a closed transaction CVR, unrecovered basis becomes a capital loss in the year of expiration, reported on Form 8949 and Schedule D, usable against other capital gains and up to $3,000 per year against ordinary income.4Internal Revenue Service. About Form 8949, Sales and Other Dispositions of Capital Assets
For an open transaction CVR, the instrument had no separate basis, so expiration alone produces no loss. If unrecovered basis remains in the original shares, a loss may be available at that point; the analysis is fact-specific.
For an installment sale CVR, the regulations disallow a loss in a year where payment simply falls short of allocated basis, unless the future obligation has become worthless under the bad-debt rules. When the CVR definitively expires, the remaining unrecovered basis generally produces a loss then.2eCFR. 26 CFR 15a.453-1 – Installment Method Reporting for Sales of Real Property and Casual Sales of Personal Property
The 3.8% Net Investment Income Tax
CVR income counts as net investment income subject to the 3.8% surtax under IRC §1411, whether it’s the capital gain portion or the imputed interest portion. The tax applies to the lesser of net investment income or the amount by which modified adjusted gross income exceeds $200,000 (single) or $250,000 (married filing jointly).11Office of the Law Revision Counsel. 26 USC 1411 – Imposition of Tax Those thresholds don’t adjust for inflation.
A large single-year CVR payout can push the effective federal rate on long-term capital gain to 23.8% and on imputed interest to 40.8%. If you have discretion over the timing of other investment income in the same year, factor that in.
How to Report CVR Income
The forms depend on the character of what you received.
- Capital gains and losses go on Form 8949 with a Schedule D summary. Your broker or the issuer will typically send a Form 1099-B, but the adjusted basis on that form is often wrong for CVRs. You’re responsible for the correct basis calculation.12Internal Revenue Service. Instructions for Form 8949 – Sales and Other Dispositions of Capital Assets
- Imputed interest is ordinary income, usually reported to you on Form 1099-INT or Form 1099-MISC and shown on Schedule B or directly on Form 1040.13Internal Revenue Service. About Form 1099-B, Proceeds From Broker and Barter Exchange Transactions
- Installment sale gain goes on Form 6252, which walks the gross-profit-ratio calculation and flows to your return.14Internal Revenue Service. About Form 6252, Installment Sale Income
Reconcile every form the issuer sends against your own records. The issuer’s allocation between principal and interest reflects its own analysis and won’t always match your basis calculations, particularly if you acquired the original shares at different times or prices. Keep a running record of your original stock basis, the CVR’s basis if any, cumulative payments, and the imputed interest portion of each payment. If your figures diverge from a 1099, attach a statement to your return explaining the difference.