Reseller Tax Deduction Calculator 2026: After-COGS Income
Calculate your true taxable income after deducting COGS, platform fees, shipping, and supplies. Free calculator included.
What this tool helps you do
Calculate your true taxable income after deducting COGS, platform fees, shipping, and supplies. See federal income tax + self-employment tax (15.3%) estimates. Essential for quarterly estimated payments and avoiding $1,000s in overpayment from not tracking deductions properly.
Interactive inputs and calculations load after the app boots. Use this prerendered preview to understand what the tool covers before opening the live experience.
Best for
- reseller tax calculator
- reseller tax deductions 2026
- schedule c calculator
- self employment tax calculator reseller
- 1099-k taxes
Frequently Asked Questions
How does the reseller tax deduction calculator work?
Enter your gross sales revenue, COGS, platform fees, shipping costs, and other deductible expenses. The calculator subtracts all eligible deductions from gross income to show your true taxable net income. It then estimates your federal income tax and self-employment tax (15.3%), giving you a clear picture of your total tax bill before quarterly estimated payments are due.
What deductions can resellers claim on Schedule C?
Resellers can deduct COGS, platform fees (eBay, Poshmark, Mercari), shipping costs, packing supplies, mileage, storage, phone and internet (business-use percentage), and home office expenses. Tracking all of these — not just COGS — is how resellers legally reduce taxable income by thousands each year and avoid overpaying at tax time.
How much is self-employment tax for resellers in 2026?
Self-employment tax is 15.3% on net self-employment income up to the Social Security wage base, then 2.9% above it. This covers Social Security and Medicare contributions that employers normally split with W-2 workers. A reseller netting $30,000 profit pays roughly $4,590 in SE tax alone — often a shock to new flippers who only budget for income tax.
When should resellers pay estimated quarterly taxes?
If you expect to owe $1,000 or more in federal taxes for the year, the IRS requires quarterly estimated payments. Due dates in 2026 fall in April, June, September, and January. Use this calculator to estimate your full-year tax liability, then divide by four. Underpaying triggers penalties; overpaying ties up cash you could use for inventory.
Can I deduct reselling tools and subscriptions on Schedule C?
Yes — software, apps, and subscriptions directly used for your reselling business (listing tools, pricing apps, photo editors) are fully deductible as business expenses. Keep receipts and note the business purpose. Tools like Underpriced.app that help you price inventory, calculate profit, and manage your operation qualify as ordinary and necessary business expenses.
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