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If you're searching for 83b election filing deadline rules, you're trying to solve a real problem, not collect definitions. This guide walks through it step by step, the way we'd explain it to a founder sitting across the table.

Quick Answer

83b election filing deadline rules comes down to your specific numbers, not a generic rule of thumb — the fastest way to get a real answer is to model it against your actual cap table instead of a spreadsheet estimate.

The 83(b) Election Deadline: Your 30-Day Window (And Why Missing It Costs You Thousands)

What Is an 83(b) Election?

What Is an 83(b) Election?. Here's what that covers: founder restricted stock = you don't own it until it vests, 83(b) = file with irs to own it immediately, and how it plays out in practice. This is where 83(b) election actually shows up on your cap table.

Founder restricted stock = you don't own it until it vests

Founder restricted stock = you don't own it until it vests. This is the step most founders underestimate — worth getting right before it turns into a bigger cleanup job later.

83(b) = file with IRS to own it immediately

83(b) = file with IRS to own it immediately. It sounds minor until it isn't, usually right when an investor or new hire is looking at the numbers.

Skip it = you'll pay taxes on unvested equity

Skip it = you'll pay taxes on unvested equity. — specifically, huge mistake.

Cost to file: $0

Cost to file: $0. — specifically, just paperwork.

Cost to miss: $50K-$500K+ in unexpected taxes

Cost to miss: $50K-$500K+ in unexpected taxes. Most spreadsheet-based cap tables miss this until someone asks a question they can't answer on the spot.

The 30-Day Countdown Clock

The 30-Day Countdown Clock. Here's what that covers: you receive restricted stock grant, you have exactly 30 days to file 83(b) with irs, and how it plays out in practice. This is where 83(b) actually shows up on your cap table.

You receive restricted stock grant

You receive restricted stock grant. Get this wrong early and it compounds quietly until your next round forces the issue.

You have exactly 30 days to file 83(b) with IRS

You have exactly 30 days to file 83(b) with IRS. This is exactly the kind of detail that's easy to skip and expensive to fix retroactively.

Day 31 = you've missed it forever

Day 31 = you've missed it forever. Most spreadsheet-based cap tables miss this until someone asks a question they can't answer on the spot.

What to do on Day 29

What to do on Day 29. — specifically, action checklist.

The 83(b) Election Deadline: Your 30-Day Window (And Why Missing It Costs You Thousands) equity

Step-by-Step: How to File Your 83(b) Election

Step-by-Step: How to File Your 83(b) Election. Here's what that covers: fill out irs form 83(b), mail to: [irs address by region], and how it plays out in practice.

Fill out IRS Form 83(b)

Fill out IRS Form 83(b). — specifically, template provided.

Mail to: [IRS address by region]

Mail to: [IRS address by region]. This is the step most founders underestimate — worth getting right before it turns into a bigger cleanup job later.

Keep copy for your records

Keep copy for your records. — often 6-7 years minimum.

Email copy to your company

Email copy to your company. — specifically, compliance trail.

The Lovie 83(b) Advantage

The Lovie 83(b) Advantage. Here's what that covers: deadline auto-alerts, pre-filled form template, and how it plays out in practice.

Deadline auto-alerts

Deadline auto-alerts. — often 5 days before cutoff. Founders fear 83(b) but don't understand it.

Pre-filled form template

Pre-filled form template. — specifically, auto-populate with your data. Carta/Pulley mention it but don't guide through it.

Mailing address validation

Mailing address validation. — specifically, never send to wrong IRS office. Lovie makes it frictionless: auto-alert, pre-filled form, clear instructions.

Archive every 83(b) you've ever filed

Archive every 83(b) you've ever filed. Most spreadsheet-based cap tables miss this until someone asks a question they can't answer on the spot.

One-click: Share with cap table history

One-click: Share with cap table history. This is the step most founders underestimate — worth getting right before it turns into a bigger cleanup job later.

Real Founder Story: The Cost of Missing 83

Real Founder Story: The Cost of Missing 83. Here's what that covers: founder received $200k stock grant, missed 83(b) by 2 days, and how it plays out in practice.

Founder received $200K stock grant

Founder received $200K stock grant. This is exactly the kind of detail that's easy to skip and expensive to fix retroactively.

Missed 83(b) by 2 days

Missed 83(b) by 2 days. Most spreadsheet-based cap tables miss this until someone asks a question they can't answer on the spot.

Years later: $150K unexpected tax bill

Years later: $150K unexpected tax bill. — specifically, vesting accrual.

How Lovie would have prevented this

How Lovie would have prevented this. It sounds minor until it isn't, usually right when an investor or new hire is looking at the numbers.

The 83(b) Election Deadline: Your 30-Day Window (And Why Missing It Costs You Thousands) data

Competitor Comparison

Competitor Comparison. Here's what that covers: carta: mentions 83(b) in docs, no automation, pulley: mentions 83(b) e-filing, but unclear how, and how it plays out in practice.

Carta: Mentions 83(b) in docs, no automation

Carta: Mentions 83(b) in docs, no automation. This is the step most founders underestimate — worth getting right before it turns into a bigger cleanup job later.

Pulley: Mentions 83(b) e-filing, but unclear how

Pulley: Mentions 83(b) e-filing, but unclear how. It sounds minor until it isn't, usually right when an investor or new hire is looking at the numbers.

Lovie: Auto-remind, pre-fill form, archive, one platform

Lovie: Auto-remind, pre-fill form, archive, one platform. Get this wrong early and it compounds quietly until your next round forces the issue.

None of this has to live in a spreadsheet you're afraid to open. For more on 83b election filing deadline rules, Lovie Cap Table is built to handle it alongside formation, funding, and equity tracking — not as three separate tools.

The 83(b) Election Deadline: Your 30-Day Window (And Why Missing It Costs You Thousands) vesting