YC Spring 2027 (X27) Batch: Dates and How to Apply
YC has not confirmed the dates of its Spring 2027 batch (X27) yet. If it keeps the calendar of Spring 2026 (closed on February 9, 2026), expect the on-time deadline around February 8, 2027 at 8pm PT, decisions around March 12, 2027, and the batch to run April to June 2027 in San Francisco. You can already apply for it through YC's Early Decision.
Expected dates repeat the Spring 2026 calendar; YC confirms each batch on its apply page, and this page then shows the confirmed date.
- Batch code
- X27
- Deadline
- Around February 8, 2027 (expected)
- Decisions by
- Around March 12, 2027 (expected)
- Batch runs
- April to June 2027
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What YC invests
YC's standard deal is the same for every company it accepts: $500,000, made of $125,000 for a fixed 7% of the company plus $375,000 on an uncapped SAFE with a most favored nation (MFN) clause, which takes the terms of the next SAFEs you issue.
How to apply to X27
The last Spring batch: Spring 2026 (X26)
Spring 2026 has 192 companies in this directory. The most common industries: B2B, Industrials and Healthcare. A sample of the batch, top companies first:
Applying to YC? Study these applications first.
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Frequently Asked Questions
When is the YC X27 application deadline?
YC has not confirmed it yet. The last Spring batch with published dates, Spring 2026, closed on February 9, 2026, and YC deadlines fall on a Monday, so expect the X27 deadline around February 8, 2027 at 8pm PT. This page switches to the confirmed date the day YC publishes it.
When does the YC Spring 2027 batch start?
If YC keeps its usual calendar, the Spring 2027 batch (X27) runs April to June 2027 in San Francisco.
Can I apply to YC X27 now?
Yes. Besides the batch it is filling now, YC takes applications for its coming batches through Early Decision, so you can apply for X27 before its own deadline is announced.
Can I apply to YC after the deadline?
Yes. YC keeps reading applications submitted after the deadline. It does not promise a reply date for late applications, and says most of them get a decision within a month.
How much does YC invest in X27 companies?
On YC's standard deal today, $500,000: $125,000 for a fixed 7% of the company plus $375,000 on an uncapped MFN SAFE. YC offers the same deal to every company it accepts.
What is Round Funded?
Round Funded is an investor database and outreach platform for startup founders. It lists 60,000+ active investors with verified contacts, filtered to recent investment activity, and lets founders send personalized pitches from their own Gmail, track replies, and share a free Data Room. Round+ starts at $99 per month with a 3-day trial.