IncomeWikiReferral Marketplace
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Find businesses looking for affiliates, creators, and referral partners.
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Explore referral opportunities →The practical business knowledge base
Learn how businesses actually work.
Research startup costs, revenue models, tools, risks, and real-world business economics before you start.
About IncomeWiki
Research the real economics before you begin.
IncomeWiki is a collaborative knowledge platform for researching the real economics of businesses and income-generating activities. It helps people understand startup costs, operating expenses, revenue models, time to first revenue, profitability, and real-world operating considerations.
Explore Business Models
Research real operating requirements, costs, and revenue models.
Online BusinessNewsletter BusinessRead the practical IncomeWiki guide.Email MarketingEmail MarketingRead the practical IncomeWiki guide.SoftwareSaaSRead the practical IncomeWiki guide.Online BusinessAffiliate & Referral ProgramsRead the practical IncomeWiki guide.AgencyWebflow Development AgencyRead the practical IncomeWiki guide.AgencyAmazon PPC AgencyRead the practical IncomeWiki guide.AgencyShopify Development AgencyRead the practical IncomeWiki guide.AgencyUGC AgencyRead the practical IncomeWiki guide.
Business Tools
Calculate pricing, profitability, break-even points, marketing economics, and more.
Profit Margin CalculatorCalculate profit, profit margin, and markup from cost and selling price.Break-even CalculatorFind the unit sales and revenue needed to cover fixed and variable costs.Freelance Rate CalculatorEstimate the hourly, daily, and monthly revenue targets needed for your income goal.ROAS CalculatorCalculate advertising return and revenue generated per dollar of ad spend.CAC / LTV CalculatorEstimate acquisition cost, customer lifetime value, and the LTV:CAC ratio.Payment Fee CalculatorFind net proceeds from a charge or the charge required to receive a target amount.
Acquisition Marketplace
Businesses for sale
Discover online businesses whose owners are open to acquisition.
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Explore businesses for sale →Most Updated
Published pages with the most community revisions.
Recently updated
Knowledge that the community is improving now.
Newsletter BusinessUpdated pageEmail MarketingUpdated pageSaaSUpdated SaaS costs, benchmarks, metrics, workflow, and risks.Affiliate & Referral ProgramsExpanded and reorganized affiliate and referral programs, removed duplicate listings, separated recurring, fixed-period, referral, and restricted programs, and added major global affiliate programs.Webflow Development AgencyAdded verified Webflow agency pricing, client billing and ownership workflows, Partner Program requirements, project economics, and practical operating risks.
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Contribute what you know.
Create a profile, document your businesses, and share practical knowledge over time.