Article · 10 min read
Most Favored Nation (MFN) Clauses in SAFEs: Why They Matter More Than Founders Think
Value Add VC Free Intermediate
This is the one piece that does both jobs you need. It runs the exact worked backward-repricing case (three angels on no-cap MFN SAFEs, later a pre-seed at an $8M cap, and their combined stake jumps from 4.2% to 6.25%), then hands you a four-step audit: identify every instrument with MFN language before you raise again, model conversion assuming all MFN holders elect the lowest cap you plan to issue, disclose MFNs during term-sheet talks, and standardize future SAFEs at the same cap on the same day. That last rule is the practical fix most founders miss.
- A no-cap MFN SAFE is not a free option: the moment you give a later investor a real cap, that cap flows backward and can swing your MFN holders' ownership by 2 to 4 points, absorbed almost entirely by founders
- Before any new raise, audit the cap table for every MFN and model the worst case where all of them elect the lowest cap you intend to offer, not the cap you hope to hold
- Cap MFN exposure structurally with a sunset (12 to 18 months) and by issuing all early SAFEs at one cap on one day, so a single later concession cannot re-price a whole tranche
