Article · 14 min read

Post-money SAFE stacking in 2026: the dilution math 83% of founders get wrong

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This is the worked example your question demands: two post-money SAFEs (one at an 8M cap, one at a 12M cap) that each look like 6.25% actually compound to 32 to 35% of common stock by the time a seed round and option pool convert, not the 12.5% naive addition suggests. It hands you a concrete number for the exact stacking trap and a hard dilution budget (20 to 22% across all SAFEs) to set before you sign the second deal, not after.

  • Post-money SAFEs stacked at different caps compound: two 6.25% SAFEs convert to 32 to 35% of common, not 12.5%
  • Set a written dilution budget (a hard ceiling of 20 to 22% across all SAFEs) before the first instrument, not after the third
  • Founders who skip the modeling hit an 8 to 14 point gap between expected and actual dilution at Series A diligence
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The question it answers

  1. If I stack a grant, an incubator, and an accelerator, how much equity and control am I really giving up?

Read with it

  1. This is the primary source, not a blog paraphrase, on the cheapest capital an Indian founder can get. SISFS gives up to 20 lakh... Startup India (startupindia.gov.in) Article · 14-page PDF Guidelines for Startup India Seed Fund Scheme (SISFS) Department for Promotion of Industry and Internal Trade (DPIIT)
  2. This is the clean-cap-table companion to the dilution math: it names the six specific things that scare a first lead investor,... StartupBOS.org Article · 8 min read Cap Table Mistakes to Avoid When Preparing to Raise Your Next Round StartupBoston
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