Our story
About Smart Sellers Tool
Smart Sellers Tool exists for one reason: to help online sellers know exactly what they will earn before they make the sale. We turn confusing marketplace fees, shipping costs, and pricing math into clear, actionable answers.
Built for sellers
Every formula is researched from live platform fee schedules, not generic math.
Transparent by design
Editable assumptions, visible breakdowns, no hidden calculations.
Insights, not just numbers
Profit Health Score, AI recommendations, and real business advice.
The platform
What Smart Sellers Tool is
Smart Sellers Tool is a business decision platform for online sellers, creators, freelancers, and small teams.
What started with the calculator every Etsy seller searches for, Etsy fees, now spans 300+ calculators across a growing set of selling and creator platforms.
Unlike template calculator sites that recycle the same formula, each calculator on Smart Sellers Tool is built as a self-contained business tool. Inputs match how sellers actually think, results show both dollars and percentages, visuals make the numbers easier to read, and teaching sections explain what the results mean for pricing strategy.
Platform coverage
300+ calculators- Etsy
- Shopify
- Amazon FBA / FBM
- eBay
- Poshmark
- Mercari
- Depop
- Patreon
- Substack
- Kickstarter
- Twitch
- TikTok Shop
- YouTube
- Fiverr
- Upwork
- Printify
- Printful
General business finance
- Profit margin
- Break-even
- ROI
- Pricing
- Taxes
- Marketing
Built around real work
Who we serve
Marketplace sellers
Etsy, Shopify, Amazon, eBay, Poshmark, Mercari, Depop, Substack, and Kickstarter sellers who need to account for listing fees, transaction fees, payment processing, shipping, and platform cuts before setting a price.
Freelancers and creators
Fiverr and Upwork freelancers, YouTubers, Patreon creators, Substack writers, Twitch streamers, TikTok Shop sellers, and digital entrepreneurs who want to translate subscribers, views, and platform cuts into real take-home pay.
Clear by design
What makes us different
Transparent formulas
We show every fee, the rate we used, and let you edit assumptions when platforms change their policies.
Editable inputs
Adjust product cost, packaging, shipping, and fee percentages to match your shop and your reality.
Business intelligence
Profit Health Score, AI-powered insights, and recommendations such as raising price by $2 to move margin from 18% to 28%.
No account required
You never need to sign up to calculate. That keeps the experience fast, private, and low friction.
Always free core tools
Carefully supported by ads and affiliate recommendations, our free calculators keep pro-level math accessible.
Education built in
Methodology, common mistakes, pricing strategies, and FAQs help you understand the why behind the number.
Why we build
Our mission
The standard
Make complex fee and profit calculations simple, transparent, and accessible to every seller in the world.
Whether you are listing your first product on Etsy or running a six-figure Shopify store, you should be able to answer “What will I actually keep?” in under 30 seconds.
Tools should teach
A calculator that only shows profit leaves you guessing what to fix. A business assistant that tells you shipping is 14% of revenue and suggests lower-cost options gives you a decision you can act on today. That is the standard we build to.
The road ahead
What is coming next
We are intentionally building Smart Sellers Tool as a modular platform. We now have 300+ calculators and are scaling to 500 to 1,000+ without a redesign.
- 01
300+ calculators live today
Across Etsy, Shopify, eBay, Amazon, Poshmark, Mercari, Depop, Patreon, Substack, Kickstarter, Twitch, TikTok, YouTube, Fiverr, Upwork, and General Business, with internal links that help sellers discover related tools.
- 02
Planning tools
Profit Planner, Pricing Optimizer, Inventory Planner, and Sales Forecast tools that go beyond one-off calculations.
- 03
AI Business Assistant
Ask plain-language questions like “What price do I need for 40% margin?” and get guidance from your actual numbers.
- 04
Scenario comparison
Compare price A, B, and C side by side, save your best scenarios, and revisit them before a launch or sale.
- 05
Premium member features
Advanced modeling, exports, and private benchmarks for power sellers who need a deeper view of their business.
An invitation
If you have a calculator you wish existed, a fee rate that changed, or an idea for a tool that would save you time, we want to hear it. The best ideas for Smart Sellers Tool come from sellers doing the work every day. Have an idea? Reach out on our contact page. We build the tools sellers ask for.