Last Accounting Company (YC S26) — Agent-native accounting firm
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.
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What it does Agent-native accounting firm (source)
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Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
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.
What the site is built with
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Read from the page's own HTML and response headers on 10 September 2026, at https://lastaccountingcompany.com/. Each badge matched a string the site serves about itself — hover one to see which. Nothing here is a traffic, ranking or revenue figure: those cannot be read off a page and are not claimed.
Checked away from the directory entry. What is below does not come from the company's Y Combinator page.
LAC replaces your accounting firm and software with one fixed-price service for Finnish startups, scaleups and SMBs.
The title and description the site itself served, answering 200. Not a cached copy and not the company's directory entry — what was live when we asked.
Riki Karjalainen
Founder
Co-Founder at Last Accounting Company. Previously built petabyte-scale data infrastructure at Token Terminal. Applied Mathematics at Aalto University.
Sami Laakkonen
Founder
CEO & Co-Founder at Last Accounting Company. Built petabyte-scale data infra for clients incl. Google and Bloomberg. 2x Nordplus International Science Olympiad in Physics. Ex-fighter pilot training. CS dropout.
Veikko Pere
Founder
Co-Founder at Last Accounting Company. Previously at BCG and private equity at Intera Partners with IB and law internships. M.Sc. Finance and M.Sc. Laws (ongoing).
Pietari Virkkunen
Founder
Co-Founder at Last Accounting Company. Prev. Tech/PE/VC. M.Sc. Industrial Engineering and Management at Aalto University.
Founders, titles and bios as the company published them. Photographs are our own copies of the ones on that record, so they do not break when the original link expires.
One of 142 companies held here in B2B › Finance and Accounting.
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Example from a real report (our sample on Target): “In March 2026, Target announced a planned incremental $1 billion operating investment” Source: Target Corporation (press release)
A Full Report on Last Accounting Company: verified, sourced, every claim cited, ready in a few minutes. See pricing.
What the Full Report on Last Accounting Company covers
The Short Answer
Which Company This Is
What They Do, And How The Money Works
Who Runs It, And How To Reach Them
The Money: Funding, Valuation, Runway
Who Pays Them, And Who They Are Up Against
Warning Bells
Sources
8 cited sources found
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