You started with just an idea. Then you made the leap. A couple of customers became a few more and your vision was becoming reality.
But now you're stuck. There's no time, and too few resources, to handle your business and recruit more of it. You're making the same mistakes and finding new pitfalls every month. You wonder now how to compete better in your market while growing to the next level.
MarathonCFO understands you. As entrepreneurs and industry veterans, we know how important it is to find partners that you can trust.  That's why we take so much time to listen and dig in.  At MarathonCFO, we make it our mission to be your most valued outside partner.

​CPA Firms are our biggest source of business.  Why?  Because they know the value of a set of good books.  As trained accountants and industry veterans, we take great pride in helping our CPA clients do their jobs better and faster.

Your World

CPA Firms
Start Ups
Life Sciences

Helping entrepreneurs is core to our mission.  We have the skill set and the experience to help just about any venture making it happen.  At this point, we have worked with more breakthrough ideas than we can count.  And we are pretty good at counting.

VC & PE Firms​

If you are a VC firm, you know how challenging it can be to keep the books up to date for your portfolio companies.  You also know how important is.  The good news is that we can help and we won't break the bank.


​We are uniquely qualified to help start ups reach their potential.

We cut our teeth helping both Zeers and Zors.   Let us be the back office you know you need but haven't been able to figure out how to get.

​Maybe it's in the Cambridge and Silicon Valley water, because we have managed to work with more Life Science companies than you can shake a stick at.


​p: 617-614-8500

f: 206-333-0493

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