Y Combinator Winter 2027 Batch: apply by November 2

The Y Combinator Winter 2027 Batch is an accelerator opportunity for startups from around the world. The batch is run by Y Combinator and is scheduled to take place from January to March in San Francisco, United States. Exact start and end dates have not been stated, but the programme is designed as a three-month, intensive accelerator for founders building ambitious companies.

YC is open to startups in any field. The opportunity is especially relevant for founders working on software, AI, deep tech and other technology-led companies, but the stated focus is broad: startups do not need to fit a narrow category to apply. As of 2026-10-05, applications are open for the Winter 2027 batch, with a deadline of 2026-11-02.

What accepted startups get

YC invests $500,000 in each company accepted into the batch. In addition to the investment, founders receive access to YC’s three-month programme, support from YC General Partners, the YC founder community, investor introductions and more than $12M in partner credits and deals.

For many teams, the value of the batch is not only the funding. The programme gives founders a structured period to sharpen their product, refine their company’s direction, learn from experienced startup operators and connect with investors. Accepted companies also become part of YC’s broader founder network, which can be useful for hiring, customer discovery, fundraising and peer support.

Who can apply

The Winter 2027 Batch is open to any startup from anywhere in the world. YC considers both early-stage and later-stage companies. Solo founders can apply, and the opportunity is also open to students and employees who are still in school or working at the time of application.

However, accepted founders are expected to work full-time on the company during and after the batch. This is an important point for students, employees and part-time founders: you can apply before making the full-time leap, but you should be ready to commit if accepted.

How to apply

Applications are submitted online through YC’s official application page. Use the official link here: Y Combinator application page.

  1. Review the batch details. Read the application page carefully and confirm the Winter 2027 deadline, timeline and expectations.
  2. Prepare your company information. Be ready to explain what you are building, who the founders are, what progress you have made and why the startup matters.
  3. Show founder commitment. If you are a student, employee or solo founder, explain clearly how you will work full-time on the company if accepted.
  4. Complete the online application. Fill in the required fields through YC’s application page and submit before the deadline.
  5. Prepare for interviews. Applicants who apply before the deadline can receive a decision by 2026-12-11, and most interviews are expected to take place by video in November and December.

Key dates

  • Application deadline: 2026-11-02. The official page states November 2 at 8pm PT for the Winter 2027 batch.
  • Interviews: Most interviews are expected by video conference in November and December.
  • Decision timing: Applicants who apply before the deadline get a decision by 2026-12-11.
  • Batch period: January to March in San Francisco; exact dates have not been stated.

Practical tips for a stronger YC application

  • Be specific about the problem. Avoid vague descriptions. Explain who has the problem, why it is urgent and what makes your approach different or faster.
  • Show evidence of progress. Even if you are early, include concrete signals such as users, revenue, prototypes, customer conversations, technical breakthroughs or a clear insight from the market.
  • Make the founder story clear. YC evaluates teams as well as ideas. Explain why your founders are well suited to build this company and why you are committed to working on it full-time.

The Y Combinator Winter 2027 Batch is a major accelerator opportunity for founders who are ready to build quickly and spend the January-to-March batch period in San Francisco. Before applying, confirm every detail, deadline and requirement on the official website. Legitimate programmes never charge an application fee.