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Fundraising10 min read

Seed Funding Stages Explained: From Pre-Seed to Series A

Published February 27, 2026

Understanding startup funding stages is essential for founders preparing to raise capital. Each stage has different expectations, investor types, and amounts involved.

Pre-Seed Funding

The earliest investment stage, typically before a startup has a minimum viable product (MVP). Funding comes from personal savings, friends and family, angel investors, and accelerators.

  • Typical Amount: Up to £150K
  • Purpose: Prototype development, market validation, initial team building
  • Investors: Friends & family, angels, accelerators, pre-seed VCs
  • Documentation Needed: Business plan, pitch deck, market research

Seed Funding

The first significant external funding round. Startups at this stage typically have an MVP and early traction — initial customers, revenue, or strong user growth.

  • Typical Amount: £250K–£2M
  • Purpose: Product-market fit, hiring key team members, early marketing
  • Investors: Angel investors, seed-stage VCs, accelerators
  • Documentation Needed: Cap table, financial model, pitch deck, legal agreements, data room

Series A Funding

The first major institutional investment round. Startups must demonstrate proven demand, sustainable revenue, and clear growth potential.

  • Typical Amount: £2M–£10M
  • Purpose: Scaling operations, entering new markets, optimising processes
  • Investors: Venture capital firms conducting rigorous due diligence
  • Documentation Needed: Detailed financials, clean cap table, IP documentation, compliance certifications, data room

Key Legal Documentation at Each Stage

StageKey Documents
Pre-SeedFounders' Agreement, IP Assignment, NDA
SeedSAFE/Convertible Note, Term Sheet, Cap Table
Series AInvestment Agreement, Shareholder Agreement, Board Minutes, Due Diligence Pack

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