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Cash Flow Tool

What most founders don't get is that building a hardware business is fundamentally about understanding and managing your cash flow. For hardware businesses especially, it can get very complicated, very quickly:

  • You often need more capital than you think

  • It's often not obvious that you'll need more capital until it's too late

  • Your cash flow can act as an early warning system for your business.

Our Cash Flow Tool is custom made to help hardware founders start their business on a solid commercial foundation.


We've fused the best parts of working financial models for hardware startups with over a century of expertise with working with manufacturers and startups. The result is a practical tool you can use to start your hardware journey correctly. Read more on our blog post. 

Join more than 1,000 hardware startups and 12 hardware VCs and accelerators that use our Cash Flow Tool to plan their cash flows for success.

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Who is this tool for?


This tool is to help hardware startups to define and manage their product development costs using Google Sheets.

We provide a template and some convenient features to help you get started with an analysis of your R&D, manufacturing and operating costs. This structure will enable you to have an understanding of your burn rate and set potential fundraising goals.

More comprehensive financial models with detailed BOM, payment terms, inventory management and manufacturing costs are available to Brinc portfolio companies. 

Can Brinc see all of my financial data?


No. We do not see, collect or store any of your financial data.

We only collect general statistics about how the add-on is being used, as well as your email address. We will use these email addresses to communicate any important changes about the tool and send periodic news about Brinc.

How do I use the tool?


This free model focuses primarily on the Product Development costs, when Manufacturing costs may not be known yet.

Start with populating the Costs tab, then populate the Cash Flow tab. Cells shaded light blue require user input. Cells shaded white contain formulas and should be changed only if the user understands the impact. Please check dependent formulas. Cells with black triangle in the corner contain useful comments to help populate the model.

Can I add/delete rows or columns?


This cash flow tool is created by Brinc and provided for free as-is.

You may edit to suit your purpose, but it is always prudent to check your formulas. In general, changes may require some adjustments in referencing formulas.

Note, the dates in the column headings are dynamically generated based on Cell B7 of the Costs tab.

What is the Overview tab? It does not seem to link to the rest of the model.


The Overview tab highlights all the key costs and expenses that you may incur as you develop and manufacture your product.

It gives you a look at what costs may be around the corner, so you can plan ahead. You should review each item and consider the impact on your company. As mentioned, more comprehensive financial models including manufacturing costs are available to Brinc portfolio companies. For more information, just click on the Apply button above.

What if I want to forecast my sales growth using a different method? Your method is too simplistic and does not fit my company.


Great! We provide this tool as a framework for hardware start-ups and it should be used as a starting point.

The sales forecasting and manufacturing cost modules are basic tools to help young companies come up with a general estimate. Feel free to enhance the cash flow tool with your own methods that fit your company’s situation. At the end of the day, you own your cash flow and the better data you input into the tool, the better information you will have to make your business decisions.

I completed the cash flow tool. Now what?


Your cash flow model should be an ever-evolving document.

You can analyze the monthly Ending Cash Balance on the Cash Flow tab to see what your burn rate is and how many months of runway your company has. As you gain more data points, enter them into the cash flow tool to refine your projections.

Try our Cash Flow Tool

If you have any questions, feel free to talk to us now.