Deal Terms
MFN Clause
Most Favored Nation clause — a provision in a SAFE or convertible note giving the holder the right to adopt any better terms offered to future investors in subsequent rounds.
An MFN (Most Favored Nation) clause is a contractual provision that entitles an investor to receive the most favorable terms given to any investor in a subsequent financing. It's most commonly found in SAFEs and convertible notes issued in pre-seed or bridge rounds.
In the SAFE context, an MFN means: if the company later issues SAFEs to new investors with better terms (lower valuation cap, higher discount, or additional rights), the original MFN holder automatically receives those better terms on their existing SAFE.
MFN clauses protect early investors from being disadvantaged by negotiating leverage they didn't have at the time of investment. They're most common in small pre-seed checks from angels or early-stage funds who invest before a company has meaningful leverage to negotiate.
In Practice
An angel writes a $50K SAFE with a $5M cap and an MFN clause. Three months later, the company raises $500K in SAFEs from a more prominent investor at a $4M cap (better terms for investors). The MFN clause automatically entitles the angel to the $4M cap — saving them from dilution.
Why It Matters
MFN clauses are a meaningful investor protection in early-stage rounds where terms can shift significantly. Founders should understand that issuing MFN SAFEs creates an obligation to keep early investors informed about future terms and may create pressure not to offer better terms to subsequent investors. From an investor standpoint, MFN is essential when you're writing a small check with limited negotiating power — it's the 'I'm trusting you not to screw me' protection.
VC Beast Take
MFN clauses are standard in pre-seed investing and generally founder-friendly to grant — they cost nothing unless you give someone else better terms later. The complication arises when founders want to offer a lower cap to a big-name investor to get them in, but doing so triggers MFN obligations for earlier investors. This is one reason sophisticated founders try to price their first SAFE round carefully — generous early caps can become anchoring problems.
Related Concepts
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