Last Accounting Company YC Application

Summer 2026Active

Helsinki

Last Accounting Company went through Y Combinator in the Summer 2026 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 2026
Industry: B2BFinance and Accounting
Location: Helsinki
Team size: 4
Status: Active
Launched: 2026

Founders

Sami LaakkonenFounder
Riki KarjalainenFounder
Veikko PereFounder
Pietari VirkkunenFounder

What Last Accounting Company does

Last Accounting Company (LAC) is a full-stack AI accounting firm. We sell the same service (bookkeeping, tax filings, etc.) as a traditional accounting firm, but underneath agents handle everything and a certified accountant signs off. Our service is faster, cheaper, and fully integrated, allowing our clients to focus on what matters, not accounting admin. LAC replaces both outsourced accountants and legacy accounting software for startups and SMBs. Our system is fully proprietary, from the general ledger to the accounting agents. This allows us to create powerful self-reinforcing loops and ultimately provide a state-of-the-art accounting service.

Last Accounting Company's YC application, reconstructed

Y Combinator application

Last Accounting Company, Summer 2026 batch. The real form questions, answered from public data.

Founders2
Company7
Progress7
Idea4
Equity3
Curious2
Batch Preference1

Company

Company name

Last Accounting Company

Describe what your company does in 50 characters or less.

AI-native accounting firm.

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

We built Last Accounting Company (LAC), a full-stack accounting firm where most of the work is done by AI agents, not manual accountants. We do standard accounting work - bookkeeping, tax filings, and reporting - for startups and SMBs. Everything is integrated on our proprietary platform. A certified accountant reviews and signs off on finished work.

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

We are based in Helsinki, Finland, and would be based there after YC.

Explain your decision regarding location.

Helsinki is where our team is, and it's a good base for building a tech company focused on European and global customers.

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 Last Accounting Company YC application?

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