A lender or vendor may agree to work with your crypto company only if you personally back its obligations. A crypto personal guarantee in California can expose a founder to repayment demands even when the underlying contract names an LLC or corporation. The central questions are what you promised, which debts the promise covers, and whether later changes or releases affect that obligation.

Quick answer

A company's debt does not automatically become a founder's personal debt. An enforceable personal guarantee can create that separate obligation. California generally requires a signed writing, subject to statutory exceptions. Liability depends on the guarantee's scope, default conditions, limitations, amendments, and waivers. For token-denominated debts, the agreement must also be examined for asset quantities, valuation, repayment alternatives, and transaction requirements.

Company obligations versus a personal guarantee

Civil Code section 2787 defines a guarantor as someone who answers for another person's debt or default, or pledges property as security for it. A founder signing for the company is not necessarily signing individually as a guarantor. Review the entire agreement, incorporated documents, signature blocks, and stated signing capacities.

This distinction can arise in financing, crypto mining and hosting contracts, or agreements with service providers. A personal promise may also become relevant in disputes over unpaid Web3 contractors.

Under Civil Code section 2793, a suretyship obligation generally must be written and signed by the guarantor, with exceptions addressed in section 2794. Do not assume a guarantee is invalid merely because it appears inside another contract rather than in a separate document.

Define the scope of a crypto personal guarantee in California

The word “guarantee” does not establish the amount owed. Identify the borrower, creditor, covered obligations, and any limits. A guarantee might cover one loan, future advances, or specified performance failures.

• Covered debts: one agreement or broader existing and future obligations.
• Liability cap: a dollar amount, token quantity, or defined percentage.
• Additional amounts: interest, enforcement expenses, and attorney fees.
• Duration: a fixed period, continuing obligation, or conditional expiration.
• Multiple guarantors: whether each promises the full covered debt or only a share.

Civil Code section 2809 generally limits a surety's obligation relative to the principal obligation. However, statutory exceptions, contractual terms, and enforceable waivers require review. A stated principal cap may not resolve whether separately described fees fall inside or outside it.

Token-denominated debts can change the exposure

A promise to repay ten ETH differs from a promise to repay $30,000 using ETH. If the debt is genuinely denominated in tokens, its dollar value can rise even though the token quantity remains unchanged. The guarantee's cap and conversion provisions become particularly important.

Examine the token, network, permitted substitutes, valuation time, price source, fees, and required confirmations. A transfer on an unsupported network may trigger a dispute over whether payment occurred.

Stablecoin payment disputes can present similar questions. The agreement should distinguish a specified token quantity from a dollar obligation. Potential losses when a stablecoin loses its peg should not be resolved by assuming the parties always intended a one-dollar value.

Default, demand, and collateral

Under Civil Code section 2807, a guarantor who assumes liability for payment or performance can become liable immediately upon the borrower's default, without demand or notice. The actual contract may contain additional conditions, notice requirements, or cure periods.

Distinguish a payment guarantee from a collection guarantee, which may impose additional collection steps. Also identify acceleration clauses and cross-default provisions that could make the obligation due earlier than expected.

The existence of collateral does not automatically require the creditor to exhaust it before pursuing the founder. Review applicable rights and waivers alongside any dispute over custody or sale of pledged assets.

If collateral was sold, reconcile the proceeds and credited balance. Challenges to a crypto loan liquidation may affect the claimed debt, but their consequences for the guarantor require separate analysis.

Amendments and waivers require careful comparison

A company may extend maturity, increase borrowing, substitute tokens, or change repayment terms after the guarantee is signed. Civil Code section 2819 provides an exoneration rule for certain creditor changes made without the guarantor's consent.

That does not mean every unsigned amendment releases the founder. The guarantee may contain advance consent to modifications or waivers permitted by Civil Code section 2856. Compare the original promise, amendment, consent language, and waiver provisions together.

Signature capacity matters here too. Approval on behalf of the company should not automatically be treated as personal consent without examining the documents and circumstances.

Other enforceability issues can include formation, fraud, or unconscionable contract terms. A harsh commercial bargain alone does not establish that a guarantee is unenforceable.

Leaving the company is not the same as receiving a release

Resigning, selling shares, or transferring management does not necessarily terminate an existing guarantee. A buyer's promise to reimburse the founder may create rights against the buyer without releasing the founder from the creditor's claim.

Civil Code section 2815 addresses revocation of continuing guarantees for future transactions, subject to its conditions. Counsel must also examine waivers, continuing consideration, notice provisions, and the distinction between future transactions and existing obligations.

A negotiated release should identify the guarantor, covered debts, effective date, conditions, and any surviving obligations. Review reinstatement language that may apply if a payment is later recovered or avoided.

Responding to a personal repayment demand

Preserve the signed guarantee, underlying agreements, amendments, notices, repayment records, and communications about release. Blockchain records used as evidence can help verify payments, but they must be connected to the relevant contractual obligation.

Preparing for cryptocurrency litigation includes reconstructing the balance and identifying disputed charges. Counsel should determine whether the claim belongs in court or whether an arbitration provision binds the founder personally. The company's agreement does not answer that question automatically.

Frequently asked questions

Does the company's bankruptcy discharge release me? Generally, a debtor's discharge does not itself eliminate another party's liability for the debt under 11 U.S.C. section 524(e). Specific orders and agreements still require review.

Can a settlement end the guarantee? Potentially. A crypto settlement agreement should expressly address the personal guarantee, payment conditions, and release rather than relying on a general statement that the business dispute is resolved.

Can a creditor reach my personal crypto? An enforceable guarantee can support personal liability. After obtaining a judgment, a creditor may pursue applicable procedures for collecting against cryptocurrency, subject to legal limits and exemptions.

Crypto personal guarantee lawyers in California

Bulldog Law helps founders evaluate guarantee language, token repayment demands, amendments, defenses, and proposed releases. Reviewing the complete document history can clarify the extent of personal exposure and the options for resolving a disputed demand.