Mark Andrus net worth
Quick answer
Mark Andrus's estimated net worth is $26.35M (range $18.45M – $39.52M) as of 2026. Mark Andrus is Founder at Onshore. Onshore valuation.
Mark Andrus is Founder at Onshore (YC W23). Independent Entrepreneurial Check model estimate from public YC data.
At a glance
- Company status: Active
- Region: United States of America
- Industries: B2B, Finance and Accounting
- Team size: 60
- Website: https://onshore.com
Who is Mark Andrus?
Mark Andrus is a founder associated with Onshore, a startup that was part of Y Combinator Winter 2023.
Highlights:
- Y Combinator
- Onshore
About Onshore
Onshore uses AI to prepare corporate R&D tax credits.
With our technology, anyone can prepare an R&D Tax Credit accurately and fast. To provide some background, the R&D Credit is often cited as the most complex and audited tax credit in the United States. With that in mind, we set out to create software to achieve two primary objectives:
- Ensure that any credit computed with our software is exactly what the...
FAQ: Mark Andrus net worth and Onshore valuation
What is Mark Andrus's net worth?
Mark Andrus's estimated net worth is $26.35M (range $18.45M – $39.52M) as of 2026. Mark Andrus is Founder at Onshore. Entrepreneurial Check publishes an independent model-based estimate from public company and role data. Not verified net worth, and Entrepreneurial Check is not affiliated with Y Combinator or the profiled companies.
What is Onshore valuation?
Onshore's estimated valuation on Entrepreneurial Check is $310.0M. That valuation, or a disclosed round when one is public, is the source for the paper-wealth estimate. Independent model output — not a verified appraisal or official mark.
What is Mark Andrus's role?
Mark Andrus is Founder at Onshore, a Y Combinator-backed startup (batch W23).