How to apply to Y Combinator, step by step.

Two things make every other answer easier to write:

1. Talk to 10–20 prospective users in the week before you write. Specific quotes, named companies and exact numbers come from real conversations — and they're the single biggest differentiator in strong applications.
2. Pick one sharp wedge. YC partners read thousands of applications. "We're a platform that…" is the kiss of death. "We help dental practices reduce no-show rates by 30% via SMS reminders" is a sentence a partner can immediately picture.

For the categories YC is most excited to fund in 2026, see the RFS Playbook 2026.

The questions look simple — that's the trap. Each one tests a specific thing, and reviewers can spot a generic answer in seconds. The big ones:

• What does your company do? — one concrete sentence, no jargon, no vision speech.
• What's new about what you're making? — the wedge, not the category.
• Who is your competition and how do you beat them? — show you know them by name; show your edge.
• How will you make money? — pricing, who pays, why they'll pay you specifically.
• Why now? — what changed in the world in the last 12 months that makes this possible.
• How did the founders meet? — partners are reading for trust and durability, not LinkedIn pedigree.

For every question — including the founder backgrounds, market size, equity split, and the "anything else" box — see the full Application Guide with strong vs weak example answers.

YC asks for a short, unedited video of the founders. Partners watch it for three things: how clearly you can explain the idea out loud, the energy and chemistry between co-founders, and whether you sound like a real human or a pitch deck.

Don't over-produce it. A laptop camera, natural light, and one take is fine. Each founder should speak. Practice the explanation enough that it's effortless — but stop before it sounds rehearsed.

Shortlisted teams are invited to a 10-minute video interview with a panel of YC partners. The pace is fast: short, specific questions, short answers, follow-ups. There is no time for a pitch and no slides.

Two patterns show up in nearly every interview: drilling into customer specifics (who exactly, how many, what did they say last week) and stress-testing founder clarity (why this idea, why you, why now). Our interview prep guide covers the recurring patterns and how to practise without becoming robotic.

Decisions usually arrive within 24–48 hours, by email or phone call. Accepted teams sign the standard YC deal ($500K explained) and start relocating to the Bay Area. Rejected teams receive a short note — sometimes with feedback, sometimes not.

Either outcome is a strong forcing function. Accepted founders begin the highest-velocity 3 months of their company so far. Rejected founders walk away with a sharpened pitch, a clearer wedge, and an open invitation to re-apply.

YC explicitly encourages re-applications. The next batch's form has a dedicated field for "what's changed since you last applied" — that field is the most important answer in your second application. Reviewers want to see concrete progress: more users, more revenue, a sharper wedge, a new co-founder, a clearer market.

Plenty of well-known YC alumni were accepted on their second or third try. Treat the first application as a forcing function to build, not as a verdict.