TL;DR

Y Combinator invests in sector-agnostic companies at Ideation, MVP, Pre-Seed, and Seed, writes cheques of $500,000 (standard deal, every company), and takes applications through a direct online application.

Who Y Combinator is

Y Combinator is a Global investor headquartered in San Francisco. The fund describes its mandate as sector-agnostic. The thesis, in the fund's own words: We fund startups at the earliest stages and help them grow into large companies.

On the ground, Y Combinator operates as a Ideation, MVP, Pre-Seed, and Seed investor with a focus on Global. Y Combinator is the world's most prolific startup accelerator.

What they invest in

How to apply

Apply directly at https://www.ycombinator.com/apply. That link is the fund's own application channel, listed in their Trampoline entry as of 2026-07-26. Fill out whatever the form asks for completely: skipped fields read as a rushed application, and a rushed application is an easy first-pass reject at any fund fielding more submissions than it can meaningfully review.

Portfolio pattern

Y Combinator's portfolio, as listed in their Trampoline fund page, includes:

That spread gives you a sense of what a real check from Y Combinator has funded, not just what the thesis claims it funds.

Before you apply

Have these ready before you reach out:

FAQ

Does Y Combinator have a sector focus?

Y Combinator describes its mandate as sector-agnostic, meaning it does not restrict itself to a fixed list of sectors.

What stage does Y Combinator typically write cheques at?

Y Combinator invests at Ideation, MVP, Pre-Seed, and Seed, with cheque sizes of $500,000 (standard deal, every company).

Do you need a warm intro to apply to Y Combinator?

No. Y Combinator takes applications through a form on their website, so a warm intro is not required to apply, though it can still help your submission stand out.

Does Y Combinator invest outside Global?

Y Combinator's stated region is Global. Check the full fund profile for the exact geographic boundaries before you apply.

Is Y Combinator a remote or in-person fund?

Y Combinator's format is listed as Hybrid (interviews via video, programme in San Francisco).

See also