The document in outline
A term sheet sets out the principal terms of a proposed transaction on a few pages: valuation or price, deal structure, governance and control rights, investor protections, exclusivity and timetable. It is standard in venture and growth investment and common in M&A, where the same instrument also travels as a letter of intent or heads of terms. Most provisions are expressly non-binding; exclusivity and confidentiality usually are binding.
Why a non-binding page sets the deal
Everything after signature is drafted against the term sheet, so its allocations become the default the other side must spend negotiating capital to move. The headline valuation also does less than the terms around it. Liquidation preferences, anti-dilution protection, board composition and veto rights can shift more value than a ten per cent change in price, and they are agreed at the stage when attention is fixed on the number. A founder or seller comparing two offers by valuation alone is comparing the figures each drafter chose to make visible.