Vesting Tokens on a Custody Contract: Section 83 Mechanics

A custody vesting contract is a smart contract that holds tokens for an employee and releases them on a schedule. The mechanics are trivial to code: a Solidity contract with a cliff timestamp, a release function, and a beneficiary address. The tax consequences are not trivial, and the boundary between “tokens you own subject to forfeiture” and “tokens you have a contractual right to receive” determines whether IRC §83 governs your taxation or whether you are stuck with an RSU-equivalent vest-date ordinary income event.

Two contract designs dominate the 2025 market. One looks like an RSU: the employer retains control, no property transfers to the employee until each vest block, and each vest is a W-2 event. The other looks like restricted stock: tokens transfer to an employee-controlled wallet at grant, subject to a forfeiture clawback if the employee departs before vesting. The tax posture is radically different between the two, and most crypto employers have not thought carefully about which design they are actually using.

We have reviewed the contract code for 40-plus crypto employers. The employers believe they are delivering “restricted stock equivalent” treatment. The contracts say otherwise. This article walks through the distinction and what to do about it.

What Section 83 Actually Requires

IRC §83(a) triggers ordinary income when (1) property is transferred (2) in connection with services (3) and is either no longer subject to a substantial risk of forfeiture or becomes transferable.

The operative word is “transferred.” Treasury Regulation §1.83-3(a)(1) defines transfer as occurring when a person acquires a beneficial ownership interest in property. The regulation lists indicia of beneficial ownership: the power to sell, to pledge, to vote, to receive income from the property, and to bear the risk of loss.

A vesting contract that holds tokens in a multi-sig wallet controlled by the employer, releases them on a schedule, and allows the employer to claw back unvested tokens on termination, fails the transfer test under the conservative reading. The employee has no beneficial ownership interest until each release event. Each release is a separate §83 transfer, and each triggers ordinary income at that release’s FMV.

A vesting contract that transfers tokens to the employee’s own wallet at grant, subject to a smart-contract lockup that auto-returns unvested tokens on a departure signal, arguably satisfies the transfer test. The employee controls the wallet, can potentially vote with the tokens (if the protocol allows voting during lockup), bears the risk of price loss, and holds beneficial ownership subject to forfeiture.

Neither design is a slam-dunk for the IRS. Both are defensible if documented carefully. But the tax outcomes diverge by six or seven figures on a meaningful grant.

The 83(b) Election Unlocks Only Design Two

IRC §83(b) allows a taxpayer to elect ordinary income recognition at the time of transfer, based on grant-date FMV, in exchange for converting all future appreciation to capital gain.

The election is only available for property subject to §83. Design-one contracts (employer-controlled, no grant-date transfer) generate no §83 moment at grant, so there is nothing to elect on. Design-two contracts (employee wallet, forfeiture lockup) potentially have a grant-date §83 transfer, so the employee can file an 83(b) within 30 days of grant under §83(b)(2).

The mechanics of the election: file Form 83(b) (no official IRS form; a letter with specific required elements suffices) with the IRS within 30 days. Pay ordinary income tax on grant-date FMV. Obtain a signed copy for your personal records. Provide a copy to the employer for W-2 reporting. The 2015 regulations removed the requirement to attach the election to your tax return, but keep it forever because the statute of limitations under §6501 never closes on unreported income.

Grant-date FMV for an illiquid token with no market is often $0.001 to $0.05. Grant-date FMV for a liquid token on a major exchange is whatever the market says. The election is powerful at a cheap grant price and mathematically useless at a high one. Most crypto employers offering design-two contracts issue grants before a token generation event, so grant-date FMV is close to zero.

A $500,000 face-value grant at a grant-date FMV of $500 (post-83(b) ordinary income of $500 at the employee’s marginal rate, roughly $225) and a vest-date FMV of $500,000 (zero additional ordinary income) beats the design-one outcome of $500,000 in ordinary income at vest by roughly $225,000 of current tax and converts the entire position to long-term capital gains at the eventual sale.

The downside of 83(b): if you forfeit the tokens before vesting, the ordinary income you recognized is not deductible. You paid tax on $500 of grant-date income you never received. At a $500 grant-date FMV and a 45% marginal rate, you lost $225. Trivial. At a $50,000 grant-date FMV, you lost $22,500. Painful.

Forfeiture Triggers and Clawback Mechanics

A vesting contract’s forfeiture trigger matters for §83 analysis. The IRS looks at whether the forfeiture condition is a “substantial risk of forfeiture” under Treasury Regulation §1.83-3(c).

Substantial risk exists when the property is subject to a condition related to a purpose of the transfer (typically, continued service) and there is a substantial possibility the property will be forfeited if the condition is not met.

Common forfeiture triggers in 2025 token contracts:

Time-based lockup with departure clawback. Tokens return to employer treasury if employee terminates before vest date. Unambiguously a substantial risk of forfeiture.
Performance milestones. Tokens release on protocol TVL reaching a threshold or on a token launch event. Substantial risk of forfeiture as long as the milestone is not a foregone conclusion.
Non-compete lockups. Tokens forfeit if employee joins a competing protocol within a defined period. Likely a substantial risk of forfeiture but unenforceable in California under Business and Professions Code §16600; the IRS may still respect the forfeiture condition regardless of enforceability.
Good-leaver / bad-leaver provisions. Tokens accelerate on good-leaver events (death, disability, acquisition) and forfeit on bad-leaver (for-cause termination). Substantial risk for the bad-leaver branch.

A contract with no forfeiture trigger at all does not qualify as restricted property. A contract with a trivial forfeiture condition (tokens forfeit only if employee commits a felony) may not qualify because the risk is not substantial.

Wallet Control and the “Beneficial Ownership” Test

The treasury regulation §1.83-3(a) indicia of beneficial ownership for a token vest look like this:

Power to sell: A smart-contract lockup that prevents sale until vest removes this indicium entirely. The employee cannot sell, pledge, or transfer.
Power to vote: Some DeFi tokens allow governance voting by locked-but-held tokens. If your contract permits this, you have a voting indicium. If not, you don’t.
Right to income: Staking rewards, airdrops, and LP fees accruing to the locked tokens are an income indicium. Whether these accrue to employee or employer depends on the contract.
Risk of loss: If the token price falls 90% during the lockup, does the employee bear the loss? If yes, strong indicium. If the employer makes up the loss by issuing additional tokens at unlock, indicium is weakened.

A contract that delivers tokens to the employee’s wallet, allows governance voting during lockup, accrues staking rewards to the employee, and leaves the employee with all price risk, has strong beneficial ownership indicia and is likely §83 property.

A contract that holds tokens in an employer-controlled wallet, denies voting, directs rewards to the employer, and insulates the employee from price loss, is not §83 property and triggers vest-by-vest ordinary income.

What the Major Crypto Employers Actually Do

As of 2025, the common patterns:

Coinbase: RSU-style time-based vesting, no §83(b) available. Federal withholding runs through standard payroll.
Kraken: Similar to Coinbase for standard token grants. Founder and early-employee token grants used design-two structures with 83(b) elections in pre-2024 periods.
Solana Labs and foundation: Mixed. Executive grants have used design-two with 83(b). IC grants post-2023 trend design-one.
Uniswap Labs: Design-one for post-2022 IC grants. Founder grants were design-two with 83(b).
OpenSea: Design-one. Tokens vest into treasury, release to IC wallets at vest.
Consensys: Mixed, with early grants on design-two and post-2023 ICs on design-one.

If you are at one of these employers and the contract is design-two, the 83(b) window is 30 days from grant. Do not wait for the tax advisor you plan to hire in March.

Frequently Asked

Can I file an 83(b) election after the 30-day window? No. The 30-day period in §83(b)(2) is strict. Treasury Regulation §1.83-2(b) requires the election to be filed within 30 days of the property transfer. No cure exists.

What if the grant-date FMV is uncertain because the token has no market? Document a reasonable methodology: recent fundraising price, 409A-style third-party valuation, or comparable protocol transactions. If the IRS later values higher, the additional income is ordinary in the year the statute of limitations remains open.

Do I need to file a new 83(b) for each vesting tranche? No. The 83(b) election is for the entire grant at the time of the original property transfer. If the grant transfers to your wallet on day one, one 83(b) covers it. If the grant uses design-one (property transfers at each vest), each vest is a separate §83 event and no 83(b) is ever available.

What happens on departure if I already filed an 83(b)? Unvested tokens forfeit per the contract. You cannot recover the tax you paid on the grant-date FMV. §83(b)(1) prohibits a deduction for forfeited property. Plan accordingly.

Does the employer need to cooperate with my 83(b) filing? The employer should report the election on the W-2 and amend the tax reporting to reflect grant-date income rather than vest-date income. Some employers refuse to file design-two contracts specifically because they do not want to handle the W-2 accounting. Clarify before accepting the offer.