Alex is Sprintlaw's co-founder and a legal technology leader. He holds law and media degrees from the University of Sydney and has been recognized by Australasian Lawyer, Lawyers Weekly and the Sydney Young Entrepreneur Awards for his work building Sprintlaw and improving access to business legal support.
For US startup founders, early employees, and advisors, the 83(b) election is a critical but often misunderstood step when receiving equity. Missing the 30-day IRS window or misunderstanding what starts the clock can lead to unexpected tax bills, lost opportunities, or even disputes with investors and cofounders. Many founders assume they have more time, or that their company will handle the paperwork, only to discover too late that the deadline has passed. Others do not realize that a new fundraising round or equity grant can trigger a new 83(b) obligation. This guide clarifies what to review before signing a new deal or closing a raise, explains the federal and state law context, and provides practical checklists and examples to help you avoid the most common and costly mistakes.
What Is the 83(b) Election and Why Does Timing Matter?
The 83(b) election is an IRS filing that lets you pay tax on the value of restricted stock or other property at the time you receive it, instead of waiting until it vests. For startup founders and early employees, this can mean paying tax when the value is low, rather than later when the company is worth much more. The election is only available for property subject to a "substantial risk of forfeiture", typically, shares that vest over time or are subject to company repurchase if you leave.
Timing is everything. The IRS gives you just 30 calendar days from the date you receive the property to file the 83(b) election. There are no extensions, no exceptions, and no second chances. If you miss the deadline, you lose the option for that grant. This can result in paying ordinary income tax on the value of your shares as they vest, which could be much higher if your company grows rapidly.
- Restricted stock: 83(b) applies when shares are subject to vesting or other substantial risk of forfeiture.
- Stock options: 83(b) does not apply to standard options, but may apply to early exercised options (when you exercise before vesting).
- IRS deadline: 30 days from the date you receive the property. No extensions.
Missing the 83(b) window is a common and expensive mistake for startup teams. The IRS will not accept late filings, and the consequences can be severe. For example, if your shares are worth $1,000 at grant but $1,000,000 when they vest, you could face a tax bill on the full $1,000,000 if you did not file on time.
It is also important to understand that the 83(b) election is personal. The company cannot file for you, and each individual must file their own election for each qualifying grant or early exercise.
Key Triggers for 83(b) Election Timing
The 83(b) clock starts when you receive property (usually stock) that is subject to vesting or other substantial risk of forfeiture. Understanding what counts as a "trigger" is essential for founders, employees, and advisors. Here are the most common scenarios:
- Signing a founder stock purchase agreement: The 30-day clock starts on the date the shares are issued, not when they vest. If you sign on January 1 and the shares are issued that day, your deadline is January 31.
- Early exercise of stock options: If you exercise options before they vest (common in startups), the shares are subject to forfeiture and the 83(b) election becomes relevant. For example, if you early exercise 10,000 options on March 10, you have until April 9 to file.
- New equity grants during a fundraising round: If founders or employees receive additional shares as part of a new round, each grant triggers a new 30-day window.
- Equity for advisors or consultants: Any restricted stock or similar property issued to advisors or service providers triggers the 83(b) deadline.
It is a common misconception that the 83(b) election applies to unexercised options. It does not. The election only applies when you actually receive shares or property that is subject to vesting. However, if you early exercise options and receive restricted shares, you must consider the 83(b) election.
Each new grant or early exercise starts its own 30-day clock. Filing once does not cover future grants. If you receive additional shares in the future, you must file a new election for each grant.
Example: Alice joins a startup as a cofounder and receives 1,000,000 shares subject to a four-year vesting schedule. She signs her stock purchase agreement and receives the shares on February 1. She must file her 83(b) election by March 3. Two years later, she receives an additional 100,000 shares as part of a new fundraising round. She must file a new 83(b) election for the new shares within 30 days of that grant.
Federal and State Law Considerations
The 83(b) election is governed by federal tax law (the Internal Revenue Code and IRS regulations), but state law and company agreements can affect your obligations and risks. Here is what you need to know:
- Federal baseline: File the 83(b) election within 30 days of receiving the property. Send the original signed form to the IRS office where you file your tax return. Provide a copy to your employer or the company, and keep a copy for your records.
- Delaware corporations: Most US startups are incorporated in Delaware. Delaware law does not change the federal 83(b) deadline, but company bylaws or agreements may require you to notify the board or obtain approval for certain equity grants. Always check your company's governing documents.
- California: California residents may face additional state tax reporting requirements for equity compensation. The California Franchise Tax Board may require you to report the grant and may tax the income differently from the IRS. If you work or reside in California, consult a tax advisor familiar with state law.
- New York: New York also has its own rules for taxing equity compensation. If you are a New York resident or your company is based there, review state-specific guidance or consult a professional.
- Other states: Some states (such as Massachusetts, Texas, and Washington) have unique rules or reporting requirements for equity. Always check with a local advisor if you are unsure.
- State tax impact: The 83(b) election itself is federal, but the resulting income may be taxed differently by your state. Some states may not recognize the election for state tax purposes, or may tax the income at a different time.
For companies incorporated in Delaware, you can check the Delaware Division of Corporations for official filings and company status. For federal securities law considerations, review the SEC's resources on startup securities and exempt offerings to ensure your equity grants comply with applicable rules.
Checklist: Federal and State 83(b) Steps
- Confirm the date you receive restricted shares or property.
- Prepare and sign the 83(b) election form immediately.
- Mail the original to the IRS within 30 days (use certified mail or another trackable service).
- Send a copy to your employer or company.
- Keep a copy for your records, along with proof of mailing.
- Check if your state has additional tax or reporting requirements for equity compensation.
- Review your company's bylaws and agreements for any extra steps or approvals.
Failing to follow state or company-specific steps can result in delays, disputes, or even loss of equity. Always coordinate with your company's legal and HR teams and consult a qualified advisor if you are unsure.
Common Mistakes and How to Avoid Them
Many founders and employees make avoidable mistakes with 83(b) election timing. Here are the most frequent issues and how to prevent them:
- Missing the 30-day deadline: The IRS is strict. There are no extensions or exceptions. Mark your calendar and file immediately after the grant.
- Confusing grant date and vesting date: The 30-day clock starts when the shares are issued, not when they vest. This is a common misunderstanding.
- Failing to file for each new grant: Each new equity grant or early exercise requires a separate 83(b) election. Do not assume one filing covers all future grants.
- Not keeping proof of filing: Always keep a copy of your signed 83(b) election, proof of mailing (such as certified mail receipt), and any company acknowledgments.
- Ignoring state-specific issues: Some states have unique rules or tax treatment for equity. Review your state's requirements before filing.
- Not coordinating with the company: Make sure your company's legal and HR teams are aware of your filing and provide any required documentation.
- Assuming the company will file for you: The 83(b) election is a personal tax filing. The company may assist, but you are responsible for filing on time.
- Not reviewing new agreements after a fundraising round: New rounds often come with new grants or changes to vesting. Each new grant may require a new 83(b) election.
Example: Bob joins a startup and receives 50,000 restricted shares on June 1. He forgets to file his 83(b) election until July 10. The IRS will reject the late filing, and Bob will owe ordinary income tax on the value of his shares as they vest, which could be significant if the company grows. If Bob had filed within 30 days, he could have locked in the lower value at grant.
Checklist: Avoiding 83(b) Mistakes
- Review your equity grant or agreement for vesting terms and grant date.
- Confirm whether the property is subject to substantial risk of forfeiture.
- Prepare and sign the 83(b) election form immediately after the grant.
- Mail the election to the IRS within 30 days (use certified mail or other trackable service).
- Send a copy to your employer or company.
- Keep all records and receipts.
- Consult with a tax advisor if you are unsure about your state's requirements.
Missing the 83(b) window can result in paying ordinary income tax on the value of your shares as they vest, which can be much higher if your company grows. Early planning and attention to timing are essential.
What To Review Before a New Deal or Fundraising Round
Before signing a new founder agreement, accepting a new equity grant, or closing a fundraising round, take these steps to protect yourself and ensure you do not miss an 83(b) deadline:
- Review all equity agreements: Look for vesting schedules, grant dates, and any terms that create a substantial risk of forfeiture. Pay attention to acceleration clauses, repurchase rights, and any triggers tied to fundraising or company milestones.
- Identify all new grants: Each new issuance, early exercise, or additional shares may require a new 83(b) election. If you receive multiple grants in a short period (such as during a fundraising round), track each one separately.
- Check for payment or purchase triggers: If you are required to pay for your shares, the payment date may affect the timing of the election. For example, if your agreement says shares are issued upon payment, the 30-day clock starts on the payment date.
- Coordinate with your company: Make sure the company is prepared to process your 83(b) election and provide any required documentation. Some companies have internal processes or forms you must complete.
- Consult with tax and legal advisors: Especially if your company is operating in multiple states or has complex equity arrangements, professional advice can help you avoid costly mistakes. Advisors can also help you understand the impact of the election on your overall tax planning.
- Understand the impact of fundraising rounds: New investors or changes to the cap table can trigger new equity grants or changes in vesting, which may require new elections. Review all new agreements and amendments carefully.
- Review state law requirements: Some states have additional tax or reporting rules for equity compensation. Check with your advisors or state agencies if you are unsure. For example, California and New York residents may need to file additional forms or report the grant differently on their state tax returns.
- Keep detailed records: Maintain copies of all grant agreements, 83(b) election forms, mailing receipts, and any correspondence with the company or advisors. Good recordkeeping can help resolve disputes or prove timely filing if questioned by the IRS or state authorities.
Example: Carla is a founder in a Delaware C-corp. She receives 500,000 restricted shares on May 15, with a four-year vesting schedule. She immediately prepares and mails her 83(b) election to the IRS, sends a copy to her company, and keeps the certified mail receipt. Six months later, the company raises a new round and Carla receives an additional 50,000 restricted shares. She repeats the process for the new grant. Because she kept careful records and filed on time for each grant, Carla avoids unexpected tax bills and is prepared for future due diligence with investors.
For companies incorporated in Delaware, official filings and status can be checked with the Delaware Division of Corporations. For federal securities law considerations, review the SEC's resources on startup securities and exempt offerings to ensure your equity grants comply with applicable rules.
Taking these steps before a new deal or raise can help you avoid missed deadlines, unexpected tax bills, or compliance issues that could affect your ownership or fundraising plans. If you are a startup founder or seeking finance, reviewing your equity arrangements in advance is a smart way to protect your interests and avoid surprises during due diligence or an exit.
FAQs
What happens if I miss the 83(b) election deadline?
If you miss the 30-day deadline, you cannot make the 83(b) election for that grant. This means you will pay ordinary income tax on the value of your shares as they vest, which can be much higher if your company's value increases. There are no extensions or exceptions, so timely filing is critical.
Can I file an 83(b) election for stock options?
The 83(b) election does not apply to standard (unexercised) stock options. However, if you early exercise options and receive shares that are subject to vesting, you may file an 83(b) election for those shares. Always check your option agreement and consult a professional if you are unsure.
Does the 83(b) election affect state taxes?
The 83(b) election is a federal tax matter, but the resulting income may be taxed differently by your state. Some states have unique rules or tax treatment for equity, so review your state's requirements and consult with an advisor.
Do I need to file a new 83(b) election for each grant?
Yes. Each new grant of restricted stock or early exercised options requires a separate 83(b) election. Filing once does not cover future grants or additional shares.
How do I prove I filed my 83(b) election on time?
Send your election to the IRS via certified mail or another trackable service. Keep the mailing receipt, a copy of the signed election, and any company acknowledgments as proof of timely filing.
Key Takeaways
- The 83(b) election allows you to pay tax on restricted stock at the time of grant, but you must file within 30 days of receiving the property.
- Each new grant, early exercise, or fundraising-related equity issuance can trigger a new 83(b) deadline.
- Federal rules set the baseline, but state laws and company agreements may add requirements or affect your tax treatment.
- Missing the 83(b) window can result in higher taxes and lost opportunities. Use a checklist and coordinate with your company and advisors.
- Always keep proof of filing and review both federal and state obligations before signing new deals or accepting new equity grants.
If you are preparing for a new equity deal or fundraising round and want to avoid costly 83(b) mistakes, our team can help you review your agreements and timing. Contact us at (888) 449-8437 or team@sprintlaw.com to discuss your situation. Where legal services are required, they are delivered by licensed lawyers at trusted law firm partners through the Sprintlaw platform.








