Take Your HAWAIʻI Business UPSTREAM

Cloud-based bookkeeping and accounting services for your small business. Your online accounting team so YOU CAN DO WHAT YOU LOVE. 

Bookkeeping and accounting options CUSTOMIZED to fit the unique needs of your business.

We can’t give you more hours in the day, but we can help you work smarter. With unique services from bookkeeping setup to high-level strategic insight, we’ll take control of your finances while giving you appropriate advice every step of the way.

Our Services



Let the Upstream team handle your bookkeeping needs so that you can do what you love.


Let us be your outsourced accounting department so that you can get back to running your business.


Let us present and discuss your business’ financial reports with you and guide you in your business decisions.


As a client, you’ll have the option of having your Hawaii GE Taxes e-filed by us and your reconciled books packaged and delivered to your CPA or tax preparer.


If you are behind, we will get you caught up. Let us worry about it so you can focus on your business.


We will leverage the available technology to implement systems and processes that streamline your accounting.

We integrate with the best software!

We establish connections between your various systems and ensure that all of your important information is connected, synchronized, optimized, and up to date.

About Upstream

It is more about you than it is about us.



You know your business better than anyone else. You have a passion for what you do and you work hard to make your goals a reality.

The bane of your existence is having to sit for hours at your computer, struggling to make the numbers make sense late into the night. Worse, it’s taking up precious time when you could be better serving the customers you already have or making connections with new ones.

What you need is to be free to pursue your passions. You need someone to crunch your numbers so you can have the fun of making your business grow.



Your numbers are OUR passion!

You work hard to bring in the money. You don’t need to waste your valuable time doing your books.

When you’re ready to let someone else do the boring stuff to free you up to grow your business, call Upstream Bookkeeping.


Joel M. Cosseboom

As a young boy, Joel got his start working in his father’s CPA practice in Carmel Valley, California. After receiving his Bachelor of Science in Economics from UC Santa Barbara, he moved to Hawai‘i in 1998 where he received his Executive MBA from the University of Hawai‘i at Mānoa.

With experience in Hawai‘i as the corporate controller for a multi-state radio station group and as a Chief Financial Officer in publishing, Joel started Upstream Bookkeeping to help Hawai‘i’s small businesses and entrepreneurs ensure that their businesses not only survive but THRIVE!.

Why Upstream Is Different?


We want you to know that we respect our relationship. You deserve a bookkeeping professional whom you can trust to return your email. For that reason, we guarantee that we will reply to your emails within 24 hours, but typically it will be much sooner.


There’s no stopwatch on this relationship. If you have a question, or you need something related to your bookkeeping or accounting…shoot us an email. We never bill by the hour. We will get back to you with an answer or point you in the right direction through our referral network.


Financial statements are based on HISTORICAL performance. It’s inherently reactive in nature…and won’t move the needle on your profitability. But…proactive guidance from a professional will! This enables you to affect change on the future of your business. In short, it gives you more cash in the bank.

Client Testimonials

"Before Joel my finances were a mess. I kept track of everything on a spreadsheet and I had no idea what I was doing when it came to filing my business taxes. I was using TurboTax and almost always filed late. I was pretty embarrassed about how I had been managing my books, but thanks to a trusted referral, I reached out to Joel and he literally changed my business and my life! Joel helped me get organized and, without judgement, helped me to clean up my books and even helped me get a refund on the GE Taxes I had overpaid! Working with Joel has been one of the greatest blessings for my business. He is so knowledgable and truly cares about your success. Thank you for all that you do, Joel! I am so grateful!"

Pua Pakele & Cabot
Web Designer

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