Blog

The equity math, worked through

Real numbers, real mechanics — no filler. Every post uses the same engine that powers the calculators.

A team reviewing software dashboards together, illustrating the best cap table software for startups
Reviews

July 19, 2026 · 9 min read

Best Cap Table Software for Startups (2026)

Compare cap table software for startups: free modelling tools vs funded-stage systems of record. Try Foundily's free calculator.

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A stock chart showing a downward trend, illustrating anti dilution protection triggered by a down round
Academy

July 19, 2026 · 8 min read

Anti-Dilution Protection Explained: Down Rounds

Anti dilution protection resets conversion prices after a down round. See full ratchet vs weighted-average — model it with Foundily's dilution calculator.

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An abstract financial growth chart, illustrating how a phantom stock payout tracks share value
Academy

July 19, 2026 · 7 min read

What Is Phantom Stock? How It Works, With Examples

Phantom stock pays out like equity without issuing real shares. See how the payout is calculated, how it's taxed, and who actually uses it.

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A stock market growth chart on screen, illustrating how participating preferred stock pays out at exit
Academy

July 18, 2026 · 8 min read

Participating Preferred Stock Explained (Examples)

Participating preferred stock lets an investor double dip at exit. See exactly how, with a worked cap table at two exit values and a comparison table.

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A calendar and clock on a desk, illustrating a startup vesting schedule with a one-year cliff
Academy

July 18, 2026 · 9 min read

Vesting Schedule Explained: Cliffs & Founder Vesting

How a vesting schedule works: the 4-year/1-year cliff standard, founder vesting, and single vs double trigger acceleration, with a worked example.

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Founders pitching to investors, illustrating the difference between pre-money and post-money valuation
Academy

July 17, 2026 · 9 min read

Pre-Money vs Post-Money Valuation Explained

Post money valuation confuses more founders than any other term sheet line. See the formula, real 2025 benchmarks, and how to convert between the two.

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A founder and investor signing a financing agreement, comparing a SAFE vs a convertible note
Academy

July 17, 2026 · 8 min read

SAFE vs Convertible Note: Which Should You Use?

SAFE vs convertible note: compare interest, maturity dates, caps and MFN terms, then model your raise free with Foundily's SAFE calculator.

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Directional arrows symbolising a decision between two paths, illustrating a Pulley alternative comparison
Reviews

July 16, 2026 · 7 min read

Pulley Alternative: Free Cap Table Tools Compared

Looking for a Pulley alternative? Compare Pulley's full cap table platform with Foundily's free modelling calculators and API — pick the right fit.

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Loan and financing paperwork on a desk, illustrating how a convertible note converts into equity
Academy

July 16, 2026 · 9 min read

Convertible Notes Explained: Interest, Cap & Discount

A convertible note is a debt instrument that converts into equity. Learn the terms, the maturity risk, and the conversion math, then model one free.

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A pie chart presentation in a meeting, illustrating how equity dilution changes ownership percentages
Academy

July 15, 2026 · 10 min read

How Does Dilution Work? A Guide to Equity Dilution

Equity dilution explained: what causes it, how it compounds across rounds, and why a smaller percentage often means a bigger prize. Model it free.

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A laptop open to a spreadsheet, illustrating a cap table template and worked example
Academy

July 15, 2026 · 8 min read

Cap Table Template: Free Example + How to Build One

A cap table template you can copy, plus a worked cap table example with founders, a pool, and a SAFE. Build yours with Foundily's free calculator.

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A startup team celebrating together, illustrating an employee stock option plan rewarding staff with equity
Academy

July 14, 2026 · 10 min read

Employee Stock Option Plan (ESOP): Complete Guide

How an employee stock option plan works: vesting, cliffs, strike price, 409A valuation and exercising. The complete guide, with a worked example.

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Share and stock documents on a desk, illustrating the difference between preferred stock and common stock
Academy

July 14, 2026 · 8 min read

Preferred Stock vs Common Stock: Full Comparison

Preferred stock vs common stock, compared right: liquidation preference, voting rights, conversion and dividends — with a worked exit payout example.

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A laptop showing a data visualisation dashboard, illustrating the best Carta alternatives for startups
Reviews

July 13, 2026 · 8 min read

7 Best Carta Alternatives for Startups (2026)

Looking for a carta alternative? Compare 7 real options for cap table software, from free modelling tools to full platforms of record.

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A founder reviewing a fully diluted cap table spreadsheet showing shares and ownership percentages
Academy

July 13, 2026 · 10 min read

What Is a Cap Table? The Complete Founder's Guide

A cap table tracks who owns what in your startup. Learn what it records, how fully diluted ownership works, and how to read one correctly.

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A founder reviewing funding growth charts, illustrating the dilution cost difference between a SAFE and a priced round
Academy

July 11, 2026 · 7 min read

SAFE vs priced round: what a $1M raise really costs in dilution

An '$8M cap' SAFE and an '$8M pre-money' priced round sound like the same deal. They're not — one gives away more ownership than the other for the identical dollar amount.

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Investors and founders discussing an acquisition deal, illustrating liquidation preferences and the exit waterfall
Academy

July 11, 2026 · 8 min read

Liquidation preferences and the exit waterfall, explained

The same cap table can pay common stock nothing at one exit price and pay it the majority of proceeds at another. Here's the full three-stage waterfall, worked through both ways.

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Founders shaking hands after finalising a round, illustrating how the option pool shuffle dilutes founders
Academy

July 11, 2026 · 7 min read

The option pool shuffle: why the pool dilutes you, not your investor

A round that 'sells 20% for the money' can cost founders 30 points of ownership. The gap is the option pool — and it's created pre-money by convention, which means you pay for it, not your investor.

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Founders reviewing a SAFE agreement before signing, illustrating how a post-money SAFE converts to equity
Academy

July 11, 2026 · 6 min read

How a post-money SAFE actually converts (with real numbers)

A post-money SAFE's ownership percentage is fixed the day you sign it. Here's the exact math for what happens to that percentage when the priced round finally shows up.

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