Poshmark Tax Calculator — Illinois 2026
Free Poshmark reseller tax calculator for Illinois (IL), including cost of goods sold. Includes the 4.95% Illinois state income tax plus federal SE tax (15.3%) and federal income tax. Quarterly payment schedule included. No signup required.
Poshmark resellers in Illinois with $60,000 gross sales and $25,000 in cost of goods sold owe approximately $3,877 total — net profit of $23,000, after Poshmark's 20% commission and cost of goods, taxed at $3,250 self-employment tax (15.3%) + $638 federal income tax + 4.95% Illinois state income tax. Quarterly estimated payment: ~$969. The 1099-K reports gross sales, not this profit figure.
Key Takeaways
- Poshmark resellers are independent contractors — Poshmark withholds zero taxes
- On $60,000 gross sales with $25,000 COGS: net profit $23,000 → ~$3,250 SE tax + ~$638 federal = ~$3,888 total in Illinois
- Quarterly payments due Apr 15, Jun 16, Sep 15, Jan 15 — ~$972 each
- The 1099-K reports gross sales — Poshmark commission and cost of goods come off before you owe tax
- Federal 1099-K threshold: $20,000 and 200+ transactions — some states set it far lower
- File Schedule C — report all Poshmark income even without a 1099-K
Writes about self-employment tax, gig economy income, and 1099 deductions for US freelancers and independent contractors.