Should I give a co-founder equity or a salary if they join after I've already started?
The short answer
A true co-founder gets meaningful equity, a cliff, and vesting, and takes real risk with you. Someone who joins for a salary and a small grant is an early employee, not a co-founder, no matter what title you give them. Be honest about which one this is. If you've already built traction alone, a late joiner should get less than an equal split, because the risk they're taking is lower. Don't hand out founder-level equity to feel less lonely.
Go deeper, your way
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Why we picked it
YC's counterpoint is worth hearing precisely because it pushes back on being stingy: if this person is a real co-founder doing years of work ahead of you, generosity buys motivation across a four-year vest and prevents resentment. Read it against your traction story to decide honestly whether this is a true co-founder (lean generous) or an early employee wearing the title (grant, not founder equity). It is also the canonical source on why a one-year cliff and four-year vesting are non-negotiable.
Why we picked it
This draws the exact line you are asking about with Indian numbers: a late-joining co-founder lands at 20 to 40 percent, while even a pre-seed CXO gets 1 to 3 percent and a senior individual contributor 0.2 to 0.7 percent, all out of a 10 to 15 percent ESOP pool. Put your candidate on that scale and the gap between founder equity and an ESOP grant becomes impossible to blur with a title. It also covers the India-specific mechanics: pool sizing, board and shareholder approvals, and vesting under Indian company law.
Late co-founders (joining 6-plus months in) sit at 20 to 40 percent; if you are offering under 20 percent, they are an early employee, not a co-founder.
Early hires draw from a 10 to 15 percent ESOP pool: CXOs 1 to 3 percent, senior ICs 0.2 to 0.7 percent, junior roles under 0.2 percent.
Indian ESOP grants need formal board and shareholder approval and standard 4-year vesting with a 1-year cliff, so plan the paperwork, not just the percentage.
Why we picked it
This is the tool for the exact fight you are having: it scores each founder across Idea, Business Plan, Domain Expertise, and (crucially) Commitment and Risk, then hands you a number. Demmler states plainly that a founder who is all-in is worth far more than one who will 'sit on the sideline and be cheerleaders,' so you can move the argument off feelings and onto a shared spreadsheet. Run it twice: once at today's real commitment, once assuming the part-timer goes full-time, and the gap is your renegotiation.
Commitment and Risk is a weighted equity factor, not an afterthought: the person keeping a salary scores lower on it, and the math reflects that
Opportunity cost counts. Someone who forgoes a career to join full-time is contributing something the hedging co-founder is not, and the pie should show it
It turns a resentment conversation into a numbers conversation both of you fill in together, which is far easier to survive than 'I feel like I'm doing more'
