Lago YC Application

Summer 2021Active

Lago went through Y Combinator in the Summer 2021 batch as a B2B company. Below: what the company does, who founded it, and its application to YC, reconstructed question by question in the real YC form.

YC batch: Summer 2021
Industry: B2BFinance and Accounting
Team size: 45
Status: Active
Launched: 2021

Founders

Anh-Tho CHUONGFounder
Raffi SARKISSIANFounder

What Lago does

At Lago, we're on a mission to make billing simpler, more transparent, and more adaptable for SaaS companies. As the leading open-source billing platform, we empower businesses to build flexible pricing models and scale with confidence. We've raised over $22 million in funding from top-tier investors including Y Combinator and FirstMark, reflecting strong confidence in our vision and growth. Our platform has garnered over 9,000 stars on GitHub, a testament to our active and growing developer community. Companies such as PayPal, Synthesia and Mistral.ai choose Lago for their billing. We're a team of ambitious, focused individuals who work together to solve hard problems with excellence and accountability. At Lago, we value reliability and proactivity - we trust each other to own tasks, drive them to completion, and adapt quickly. While we encourage you to try fast and "fail fast", we also expect you to learn fast: make mistakes, but don't make the same one twice. If you're excited by challenges and want to grow alongside a high-performing, supportive team, this is the place for you.

Lago's YC application, reconstructed

Y Combinator application

Lago, Summer 2021 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Lago

Describe what your company does in 50 characters or less.

The AI Native Billing Platform

What is your company going to make? Please describe your product and what it does or will do.

We built a flexible billing platform designed for SaaS companies. It lets them create and manage complex pricing models with transparency and simplicity. Our platform handles recurring billing and metering, backed by an open-source core that helps companies scale their billing confidently.

Where do you live now, and where would the company be based after YC?

We're based in San Francisco, CA and plan to continue there after YC.

Explain your decision regarding location.

San Francisco is a hub for SaaS and fintech companies and gives us access to talent and customers in our industry. Being here helps us move fast and stay close to early users.

21 more answers in the full application

Founders, Progress, Idea, Equity, Curious, Batch Preference are in the full version. Create a free account to open it in YC Insights, next to every other YC batch.

See full application

Frequently Asked Questions

Is this the real Lago YC application?

No. Y Combinator keeps submitted applications private. This is a reconstruction: the real YC form questions, answered from Lago's public data (launch notes, founder backgrounds, product description). It shows how a company like Lago would present itself to YC, not the text they submitted.