I'm a contracted business plan and grant writer on the side as I work at a startup. I've also entered and placed in / won a few national biz plan competitions in multiple industries (biotech, pharma, semicon, ren. energy, B2C software, B2B software) so I feel like I may be able to gauge this.<p>Odds are strong that your plan, if in the consumer space, is already outdated. Unless you have real, long-lasting IP (not just 'patent pending', but literally a process that is revolutionary and incredibly hard to reverse engineer, typical with university tech) the market has likely shifted away from your assumptions. Unless this is true, the business plan is only worth the paper and ink it's printed on.<p>That said, if you have been able to secure the first partnership, funding, or start carrying out the actual plan, you have something much more valuable than 30 bound pages and a spreadsheet. That deserves equity, and a lot of it.<p>Also, and I apologize if this sounds rude, 2 years of writing a biz plan is about 15-18 months too long. I can bang out a complete draft sans graphics in ~4 weekends. Any more time that that, and I get into the "law of diminishing returns" space. Whatever you do, don't rewrite it -- you've already sunk enough time into it. Fundraise full time, line up partners, presell the product with your next time period, but another day tweaking that plan is another day lost.<p>For the record -- I'm not a fan of writing business plans at all, but it pays the bills, and organizations are happy to write me big checks so they don't have to write them either. Some big industries require them (bio, semicon, green energy), but those same players also want ironclad IP, so its a completely different world than the modern web space.