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The founder's toolkit · Always free
An idea is a start. Make your next move count.
Run the numbers. Find your starting point. Everything here is free, with no sign-in or credits.
Free startup calculators
All calculatorsEvery number. A clearer decision.
Your inputs. Clear working. Find the costs, margins and milestones behind your next move.
- Break-evenHow many units you have to sell before the business stops losing money.Open calculator
- Startup costWhat it costs to open the doors, and how long your cash lasts after that.Open calculator
- Return on investmentHow long the money you put in takes to come back, and what it returns in a year.Open calculator
- Funding neededHow long your cash lasts, and how much more you need to reach the month you are aiming for.Open calculator
- Customer Acquisition CostHow much you spend to acquire a single paying customer.Open calculator
- Lifetime Value (LTV)A strategic tool to calculate Lifetime Value (LTV) for your business.Open calculator
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- LTV:CAC RatioA strategic tool to calculate LTV:CAC Ratio for your business.Open calculator
- Payback PeriodA strategic tool to calculate Payback Period for your business.Open calculator
- Gross MarginA strategic tool to calculate Gross Margin for your business.Open calculator
- Net MarginA strategic tool to calculate Net Margin for your business.Open calculator
- ARPUA strategic tool to calculate ARPU for your business.Open calculator
- Churn RateA strategic tool to calculate Churn Rate for your business.Open calculator
Startup guides
All guidesOpen a new chapter.
Practical reading for the decisions ahead, with fresh picks from the library each visit.
- Startup Cash Flow Management: Extending Your RunwayRevenue is vanity, margin is sanity, but cash is reality. A profitable startup will still go bankrupt if the timing of its cash…Read the guide
- Calculating Customer Lifetime Value (CLTV) in SaaSCustomer Lifetime Value (CLTV) is the ultimate metric for SaaS unit economics. It determines exactly how much you can afford to…Read the guide
- Early Stage Startup Hiring: Finding Founding EngineersYour first ten hires will dictate the culture, velocity, and ultimate success of your company. You cannot hire purely for…Read the guide
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- Inbound Marketing for Bootstrapped StartupsBootstrapped founders cannot outspend venture-backed competitors on ads. Your leverage lies in inbound marketing. By building…Read the guide
- TAM, SAM, and SOM Market Sizing: A Practical GuideUnderstanding your market isn't a theoretical exercise; it’s a foundational requirement for any operator building a viable…Read the guide
- Pre-Launch Checklist for Startups: Technical and Marketing AuditThe market doesn't forgive unpreparedness. Your pre-launch phase isn't a suggestion; it’s the crucible where viability is forged…Read the guide
Startup glossary
Full glossaryBig ideas. Plain words.
The terms you will meet along the way, explained in plain language.
- Family OfficePrivate wealth management advisory firms that serve ultra-high-net-worth investors.See the definition
- Average Revenue Per Account (ARPA)A profitability metric that assesses a company's revenue generation on a per-account basis. Synonymous with…See the definition
- Deferred RevenueMoney received from customers for services that have not yet been delivered or recognized as revenue.See the definition
- Phantom EquityA compensation plan that gives employees the right to receive a cash payment at a future date tied to the…See the definition
- Search Engine Marketing (SEM)The practice of marketing a business using paid advertisements that appear on search engine results pages.See the definition
- VestingThe process by which an employee or founder earns the right to their equity over time, rather than receiving…See the definition
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- General Data Protection Regulation (GDPR)A regulation in EU law on data protection and privacy in the European Union and the European Economic Area.See the definition
- 409A ValuationAn independent appraisal of the fair market value (FMV) of a private company's common stock, required by the…See the definition
- Service Organization Control 2 (SOC 2)An auditing procedure that ensures your service providers securely manage your data.See the definition
- Platform as a Service (PaaS)A category of cloud computing services that provides a platform allowing customers to develop, run, and…See the definition
- Minimum Marketable Product (MMP)The version of the MVP that is polished enough that customers are actually willing to pay for it.See the definition
- Post-Money ValuationThe valuation of a company immediately after a new round of investment capital is added to its balance sheet.See the definition
From the blog
All postsRead beyond the obvious.
Ideas, field notes and founder lessons worth taking into your next decision.
- 50 Realistic Small Town Business Ideas for Local EntrepreneursA walk through a small Indian town, stop by stop: the highway, the bazaar, the farm edge, the building site and the homes. 50…Read the story
- 50 Untold Work-From-Home Business Ideas You Can Start With No Money50 real work-from-home business ideas from BBI's own research library, each linked to the full blueprint. No invented titles, no…Read the story
- How to find your first paying customer without spending on adsYour first sale comes from people who already trust you, not from paid ads. Here is how to turn your contact list into paying…Read the story
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- selling social media caption templates for niche businessesDesign tools made graphics easy, but small business owners still spend hours staring at blank text boxes before posting.Read the story
- The Two Week Wait That Built a Van BusinessHow to launch a van-based bicycle mechanic operation that skips retail leases and fixes the two-week repair shop queue.Read the story
- One Off Gutter Jobs Are a Bad Business. Contracts Are Not.Single gutter cleaning jobs leave you stranded between seasons. Monthly and annual contracts build stable cash flow with basic…Read the story