E-commerceAccounting & Financial Management2MildOwner$ implied
Small business owner struggles to calculate cost basis for initial inventory for tax purposes due to lack of itemized purchase records from a marketplace.
Existing solution (manual spreadsheet or basic inventory tracking) does not automatically map bulk purchase history to individual items with accurate cost basis for tax compliance.
37
0
Opp. Score
37
Severity
2Mild
Willingness to Pay
implied
Added
May 30, 2026
Workarounds Described
- exports purchases from Whatnot and assigns weighted cost to each item manually
Implied Software Gaps
- Automated mapping of marketplace purchase history to individual inventory items with correct cost basis
App Concept
CostBasis Pro
An inventory and cost basis app for online resellers that automatically syncs purchase data from marketplaces like Whatnot, eBay, and PayPal, then assigns weighted average or specific identification cost to each item. It simplifies tax preparation by generating IRS-compliant cost basis reports for Schedule C or inventory accounting.
Key Features
- Auto-import purchases from marketplaces (Whatnot, eBay, PayPal)
- Weighted average cost and specific identification methods
- Per-item cost basis tracking with date and proof of purchase
- Exportable tax reports for Schedule C / inventory valuation
Target Users: Sole proprietors and small e-commerce resellers (sports cards, collectibles) managing $10k-$100k inventory across multiple marketplaces
Revenue Model: Freemium with $9.99/mo basic (up to 500 items) and $19.99/mo pro (unlimited items + multi-marketplace sync)
Existing Solutions Mentioned
Whatnot purchases exportweighted cost assignment
Part of App Idea
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