Financial Calculators for Resellers
Calculate fees, profits, and break-even prices across platforms. Compare options, open the live tools, and use Underpriced to make faster sourcing and pricing decisions.
Tools in this category
eBay Fee Calculator 2026
Free eBay fee calculator for 2026. Compare selling fees across eBay, Mercari, Poshmark, Depop, Facebook Marketplace, Grailed, and Etsy.
StockX vs GOAT Payout Calculator 2026
Calculate exact payouts on StockX and GOAT for sneaker resale. Use the free tool today.
PayPal Fee Calculator 2026
Calculate exact PayPal Goods & Services fees for domestic and international transactions in multiple currencies (USD, CAD, GBP, EUR, AUD).
Break-Even Price Calculator 2026
Calculate the exact minimum price needed to avoid losing money on resale flips. Accounts for platform fees, shipping, and the value of your time.
Amazon FBA Storage Fee Calculator 2026
Calculate Amazon FBA storage fees based on product dimensions and storage duration. Use the free tool today.
Depop Fee Calculator 2025
Calculate Depop seller fees with the new 2025 zero-fee model. US sellers pay ONLY 3.3% + $0.45 payment processing (no 10% selling fee).
Credit Card Rewards Calculator for Resellers 2026
Calculate your true reseller profit when factoring in credit card rewards (cash back or points). Use the free tool today.
eBay Promoted Listings ROI Calculator 2026
Calculate if eBay Promoted Listings increase profit or just eBay's fees. Use the free tool today.
Reseller Tax Deduction Calculator 2026
Calculate your true taxable income after deducting COGS, platform fees, shipping, and supplies. Use the free tool today.
Discount Stacking Calculator 2026
Calculate your true buy cost after stacking sales, coupons, cashback portals, and credit card rewards. Use the free tool today.
Margin vs Markup Calculator 2026
Stop confusing margin and markup—they're NOT the same. Use the free tool today.
Reseller ROI Calculator 2026
Calculate your true return on investment (ROI), profit margin, and hourly rate for reselling. Use the free tool today.
Sales Tax Calculator 2026
Stop losing 8-10% on inventory. Calculate sales tax by state or learn how resale certificates eliminate tax on inventory purchases.
Crosslisting Software Comparison 2026
Compare top crosslisting platforms (Vendoo, Crosslist, List Perfectly) for features, pricing, auto-delist, and ROI. Use the free tool today.
Flip Profit Calculator 2026
Calculate exact net profit, ROI percentage, and profit margin for any flip. Use the free tool today.
Whatnot Fee Calculator 2026
Calculate exact Whatnot seller fees (9.5% + 2.9% + $0.30) and your net payout. See fee breakdown for live auctions and buy-now items.
Offer Acceptance Calculator 2026
Data-driven tool to decide if you should accept an offer, counter, or wait. Use the free tool today.
Electronics Depreciation Calculator 2026
Calculate how fast electronics lose value. See depreciation curves for iPhones, Samsung, MacBooks, gaming consoles. Use the free tool today.
Wholesale & Bulk Profit Calculator 2026
Calculate true profit margins for wholesale lots, pallets, and bulk buys. Use the free tool today.
PSA/CGC Grading ROI Calculator 2026
Calculate if PSA, CGC, or BGS grading is worth the cost. Input raw card value, grading fees ($18-150), and see break-even grades. Use the free tool today.
Return Rate Impact Calculator 2026
Calculate your true profit margin after factoring in return rates. See how a 5-15% return rate destroys margins. Use the free tool today.
eBay Best Offer Strategy Calculator 2026
Calculate optimal auto-accept, auto-decline, and counter-offer thresholds for eBay Best Offer. Maximize profit while minimizing negotiation time.
Mileage Deduction Calculator 2026
Calculate tax savings from IRS standard mileage deduction (67¢/mile for 2024, 70¢ for 2025). Use the free tool today.
Storage Unit ROI Calculator 2026
Calculate if renting a storage unit is profitable for your inventory. Use the free tool today.
Platform Fee Comparison Tool 2026
Compare net profit across eBay, Mercari, Poshmark, Depop, Facebook Marketplace, and Whatnot for the same item. Use the free tool today.
Auction vs Buy Now Calculator 2026
Should you auction or use Buy It Now? Calculate expected value for both approaches. Use the free tool today.
Bundle Discount Optimizer 2026
Calculate the maximum bundle discount you can offer while maintaining profit margins. See how shipping savings fund discounts. Use the free tool today.
Inventory Turnover Calculator 2026
Calculate inventory turnover rate, sell-through percentage, and days of supply. Get an inventory health score with category benchmarks.
USPS Shipping Zone Calculator 2026
Find USPS shipping zones from your location with cost estimates for Ground Advantage, Priority Mail, and First-Class. Use the free tool today.
Cost Per Wear & Resale Calculator 2026
Calculate true cost-per-wear factoring in future resale value. See when holding vs selling maximizes value. Use the free tool today.
Restock Alert Calculator 2026
Calculate optimal reorder points and safety stock levels based on your sell-through rate and lead times. Never miss sales from stockouts.
Best Time to List Calculator 2026
Find the optimal day and time to list items by platform and category. Heat map visualization shows peak buying windows. Use the free tool today.
Negotiation Range Calculator 2026
Calculate your acceptable offer range with price floor visualization. Get counter-offer response scripts for different offer percentages.
Condition Grade Impact Calculator 2026
See how condition grades (Mint, Excellent, Good, Fair, Poor) affect resale prices by category. Includes repair ROI analysis - is fixing worth it?
Financial Calculators guides
Flipping Electronics for Profit (2026): Complete Sourcing, Testing & Selling Guide
Complete guide to flipping electronics for profit in 2026. Learn which electronics have the best margins, how to source and test them, pricing strategies by category, and platform selection for phones, laptops, consoles, audio gear, and more.
Crosslisting Software Showdown 2026: List Perfectly vs Vendoo vs Crosslist - Features, Pricing & ROI
Detailed crosslisting tool comparison with pricing breakdowns, platform compatibility charts, bulk listing capabilities, template systems, and calculated ROI for List Perfectly Pro, Vendoo, Crosslist, OneShop, and Flyp.
Amazon Returns Reselling Complete Guide 2026: Warehouse Deals, Liquidation & Grading
Master Amazon returns reselling from Warehouse deals to liquidation pallets. Learn grading systems, realistic ROI expectations, and which return categories are actually profitable.