Self-employment tax
15.3% on your Poshmark net profit (Social Security + Medicare). You can deduct half of this amount before calculating income tax.
Poshmark seller tax calculator
Poshmark seller tax calculator for 2026
Enter your Poshmark gross sales, Poshmark fees (20% commission), and cost of goods sold below to calculate your estimated self-employment tax, federal income tax, and quarterly payment amounts. Updated for 2026 tax rates.
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Estimated tax on side hustle profit
$2,687.29
Profit after deductions: $13,323.00
Total deductions$2,677.00
Self-employment tax$1,882.48
Federal income tax$0.00
State estimate (CA)$804.81
Effective rate16.8%
Quarterly payment target$671.82
Next four due dates
Q1 due April 15, 2026
Income earned Jan 1 to Mar 31, 2026
Q2 due June 15, 2026
Income earned Apr 1 to May 31, 2026
Q3 due September 15, 2026
Income earned Jun 1 to Aug 31, 2026
Q4 due January 15, 2027
Income earned Sep 1 to Dec 31, 2026
Before you file
Set aside $671.82 each quarter so this estimate does not become a deadline surprise.
Tax filing handoff
TaxSlayer Self-Employed is the stronger next step once the estimate turns into a real filing number.
Use the calculator to set your target, then move into a filing flow built for Schedule C income, self-employment tax, quarterly payments, and common 1099 forms.
This site may earn affiliate commissions from links on this page. We only recommend software we'd use ourselves.
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How Poshmark income is taxed in 2026
Poshmark sellers who run their shop as a business owe two types of federal tax on net profit: self-employment tax (15.3% up to $176,100 in 2026) and federal income tax at their marginal bracket. Poshmark does not withhold any taxes from your payouts — you are responsible for tracking and paying throughout the year.
Federal income tax
Taxed at your bracket (10% to 37%). Poshmark profit adds to all other income, which can push you into a higher bracket as your sales grow.
State income tax
Varies by state. Nine states have no personal income tax on Poshmark earnings. Most others follow a similar structure to federal with different rates.
Poshmark tax estimates at common sales levels (2026)
These estimates assume Poshmark's standard 20% seller fee and a solo filer with no state income tax. Your actual result depends on your deductions — use the calculator above for a personalized estimate.
| Gross Poshmark Sales | Poshmark Fees (20%) | Est. COGS | Net Profit | Est. Total Tax | Notes |
|---|---|---|---|---|---|
| $3,000 | $600 | $1,200 | $1,200 | $227 | Casual closet cleaner |
| $10,000 | $2,000 | $4,000 | $4,000 | $881 | Part-time reseller |
| $25,000 | $5,000 | $10,000 | $10,000 | $2,544 | Active Poshmark business |
| $50,000 | $10,000 | $20,000 | $20,000 | $5,627 | Full-time seller |
Estimates assume single filer, 2026 tax year, no state income tax. Includes SE tax deduction. Actual amounts will vary.
Poshmark deductions that reduce your taxable income
Good recordkeeping is what separates Poshmark sellers who overpay from those who keep their tax bill accurate. Here are the most impactful deductions:
Cost of goods sold (COGS)
The original price you paid for items that sold. This is typically the largest deduction for Poshmark resellers. Save every sourcing receipt.
Poshmark commission fees
Poshmark's 20% commission (or $2.95 flat on sales under $15) is fully deductible as a business expense against your gross sales.
Shipping supplies
Poshmark provides prepaid USPS labels, but if you purchase extra boxes, tissue paper, thank-you cards, or tape for presentation, those costs are deductible.
Mileage for sourcing
Every mile driven to thrift stores, consignment shops, outlet sales, or the post office for your Poshmark business. The 2026 IRS rate is $0.67 per mile.
Home office or storage space
If you use a dedicated area at home exclusively for storing inventory, photographing items, or managing your Poshmark closet, you can claim the home office deduction.
Software & subscriptions
Cross-listing tools, inventory management apps, photo editing software, and tax software are deductible business expenses for Poshmark resellers.
Poshmark sellers must pay quarterly estimated taxes
If your Poshmark income will generate $1,000 or more in taxes this year, the IRS expects four estimated payments. The 2026 deadlines are April 15, June 16, September 15, and January 15, 2027. Missing even one deadline triggers an underpayment penalty.
See the full 2026 quarterly payment calendar → Advertisement Poshmark seller tax calculator lower ad
Poshmark seller tax calculator — frequently asked questions
How is Poshmark income taxed in 2026?
Poshmark income from selling as a business is subject to self-employment tax (15.3% on net profit) plus federal income tax at your marginal bracket. Poshmark's 20% commission (or $2.95 flat fee on sales under $15) is fully deductible, so you are only taxed on your actual net profit.
Does Poshmark send a 1099-K?
Yes. Poshmark is required to issue a 1099-K once your sales reach $5,000 in 2025 (with the threshold dropping to $600 in future years under current IRS rules). However, you owe tax on your profit — not gross sales — even if you never receive a form.
What can Poshmark sellers deduct on their taxes?
Key Poshmark deductions include cost of goods sold (what you paid for items you sold), Poshmark's 20% fee, shipping supplies if you send extra packaging, mileage for sourcing trips, a home office if you have dedicated storage or photographing space, and software or tools used for your resale business.
Do I need to pay quarterly estimated taxes on Poshmark income?
Yes, if your Poshmark activity will generate $1,000 or more in taxes for 2026. The quarterly due dates are April 15, June 16, September 15, and January 15, 2027. Missing a deadline triggers an IRS underpayment penalty even if you pay in full at filing.
Is reselling on Poshmark a hobby or a business?
If you sell regularly with the intent to make a profit, the IRS considers it a business (Schedule C). Business classification lets you deduct all ordinary expenses and reduces both income and SE tax. Hobby sellers face much stricter deduction limits. The IRS looks at consistency, profit history, and recordkeeping.
More reseller tax resources
Get your Poshmark taxes right
Tax software built for resellers — tracks fees and deductions automatically.
Once you have your estimate, use software that keeps Poshmark fees, sourcing receipts, mileage, and inventory costs organized so quarterly payments and April filing are straightforward.
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