Who the Site Is For
Commerce Tally is for marketplace sellers, independent ecommerce shop owners, side-hustle product businesses, handmade sellers, resellers, and small teams that need quick estimates before making pricing and operations decisions. It can help an Etsy seller test whether a listing price leaves room after fees, an eBay seller compare promoted listing costs, an Amazon seller model platform expenses, or a store owner check whether free shipping is quietly reducing margin.
The site is also useful for people learning ecommerce math. Margin, markup, break-even units, dimensional weight, payment fees, and inventory turnover are simple concepts when separated, but they can become confusing when every cost happens on the same order. The guides connect those concepts in plain language.
How We Approach Calculator Content
Commerce Tally does not treat a calculator page as only a form and a result. Each core page includes an explanation of what the calculator does, how to use it, how the math works, interpretation tips, related tools, related articles, and FAQ content based on common seller questions. This makes the site more useful for visitors and easier for search engines to understand.
Fee-related calculators use editable assumptions because marketplace, payment, tax, and shipping rates can change. Sellers should verify current rates with the relevant platform, carrier, processor, or professional advisor before making important decisions.
Main Calculators
Profit Margin Calculator
Calculate your ecommerce profit margin instantly. Enter selling price, product cost, shipping, and marketplace fees to see gross profit, margin percentage, and the true cost impact of each sale. Try it free.
Markup Calculator
Calculate product markup percentage from cost and selling price. Compare markup vs profit margin, and set ecommerce prices that protect your bottom line. Start calculating now.
Selling Price Calculator
Find the right selling price for your products. Enter cost, target margin or markup, and calculate a price that covers fees, shipping, and profit. Try it free today.
Break-Even Calculator
Find your break-even point in units and revenue. Enter fixed costs, selling price, and variable costs to see how many sales you need to cover every expense. Calculate now.
Shipping Cost Calculator
Calculate your true shipping cost per order. Add carrier rates, surcharges, packaging, and handling to see the full fulfillment cost and protect your margins. Start here.
Dimensional Weight Calculator
Calculate dimensional (DIM) weight for any package. Enter box length, width, height, and carrier divisor to see billable weight and avoid surprise shipping charges. Try it free.
Marketplace Fee Calculator
Calculate your net proceeds after marketplace fees. Enter commission rates, fixed fees, payment processing, and ad costs to see what you really keep from each sale. Start calculating.
Etsy Fee Calculator
Estimate every Etsy fee before you list. Calculate listing fees, transaction fees, payment processing, and ad costs to see your true net revenue per sale. Try the free Etsy fee calculator.
eBay Fee Calculator
Calculate eBay fees and net proceeds before you list. Enter sale price, category fees, promoted listing costs, and international charges to see your true take-home amount. Start now.
Amazon Fee Calculator
Estimate Amazon referral fees, FBA fulfillment, storage, and advertising costs. Compare FBA vs FBM profitability and see your net revenue per sale. Try the free Amazon fee calculator.
Payment Fee Calculator
Calculate what payment processors take from each transaction. Enter percentage fees, fixed fees, and international charges to see your net received and gross up charges. Start calculating.
Discount Calculator
Calculate sale prices and discount impacts before you promote. Enter original price and discount to see the final price, savings, and whether your margin survives the sale. Try it free.
Return Cost Calculator
Calculate how much returns actually cost your business. Enter order value, return rate, shipping, restocking, and damage costs to see the true profit impact. Start calculating now.
Inventory Turnover Calculator
Calculate your inventory turnover ratio and days inventory outstanding. Enter COGS and average inventory to see how fast products sell and free up cash. Start calculating now.
Sales Tax Calculator
Calculate sales tax amounts and tax-inclusive prices instantly. Enter any rate to add tax to a price or extract the pre-tax amount from a total. Try the free sales tax calculator.
Important Limits
Commerce Tally provides educational estimates only. The site is not a substitute for accounting software, tax software, legal advice, business consulting, official marketplace fee statements, or carrier rate quotes. Results depend on the assumptions entered by the user and may not reflect refunds, discounts, category-specific fees, regional rules, subscriptions, negotiated rates, or future platform changes.
The best use of the site is comparison and planning. Run a conservative estimate, check related costs, compare with real order history, and update the assumptions as your business changes.