Why it matters
MFN clauses are sold to investors as protection against being undercut. In practice, they ratchet your future fundraising terms to the lowest common denominator. If your seed convertible has an MFN and you do a small bridge SAFE at a 20% discount to attract a strategic, every prior MFN-protected investor's discount rate goes from 15% to 20%. If you do a SAFE without a valuation cap to a new investor, MFN holders demand the cap be removed from theirs too. You end up unable to do any creative capital raise because every concession cascades backward. Most lawyers don't catch this in early rounds because the MFN clause is one paragraph buried in a 12-page note.
How to negotiate
Strike MFN clauses entirely from convertible notes and SAFEs unless the investor's check is large enough to justify the constraint (>$500K). If the investor insists, scope the MFN narrowly: 'MFN applies only to discount rate and valuation cap, not to other terms,' and only for 12 months from issuance. Avoid 'super-MFN' language where the MFN holder gets ALL terms of any subsequent instrument, including conversion mechanics, board rights, or pro rata.
Example language
How this clause typically appears in a debt agreement or note. Read it carefully — the language that triggers default is often buried in routine paragraphs.
If, at any time prior to the conversion of this Note, the Company issues any convertible securities to any investor on terms more favorable than those set forth herein (including without limitation any lower valuation cap, higher discount rate, additional warrants, or enhanced rights), the Holder shall have the right to elect to amend this Note to incorporate any or all such terms.
TURNSHEET provides intelligence, not legal advice. This page describes typical market behaviour and common negotiation tactics; your specific facility may have nuances that change the analysis. Always review your debt documents — including covenants, intercreditor agreements, and personal guarantees — with qualified legal counsel before signing.