1099-K Tax Calculator — Tax on PayPal, Venmo, eBay & Etsy

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1099-K Tax

Marketplace & reseller income

This income is from

Gross amount on 1099-K

Cost of goods + expenses ⓘ

Your federal income tax bracket

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Enter your 1099-K to estimate the tax

How the 1099-K Tax Calculator Works

Pick what the income is — business, hobby, or selling used personal items.
Enter your 1099-K total and your costs/expenses.
See your taxable profit and the income + self-employment tax you'll owe.

Do I Owe Tax on a 1099-K?

A Form 1099-K reports the gross payments you received through apps and marketplaces (PayPal, Venmo, Cash App, eBay, Etsy, StubHub, etc.). The form itself isn't a tax bill — you're taxed on your profit, not the gross. As thresholds dropped, far more casual sellers now receive one.

Business/side hustle: deduct your cost of goods and expenses; profit is subject to income tax plus 15.3% self-employment tax (above $400 net). Hobby: income is taxable but you generally can't deduct expenses. Used personal items: selling at a loss (e.g., a couch for less than you paid) isn't taxable — only gains are. Keep records to prove your basis. Estimate only; not tax advice.

Formula & Logic

Form 1099-K reports gross payment volume processed through third-party platforms — marketplaces, payment apps, ticket resale sites. The critical point is that it reports GROSS receipts before any deduction: platform fees, shipping, refunds and the cost of the goods themselves are all included in the reported figure. Receiving one does not mean the whole amount is taxable income. Personal transactions — splitting a dinner, reimbursing a friend — should never appear and can be excluded, and selling a personal item at a loss produces no taxable gain, though it must still be reported and offset.

Taxable profit = Gross receipts (Box 1a) − cost of goods − platform fees − shipping − refundsSE tax applies if the activity is a trade or businessPersonal item sold at a loss: report the proceeds and offset to zero — no deductionHobby income: taxable, but expenses are not deductible

where:

Box 1a: gross payment volume, before every deduction
business vs hobby: determines whether expenses are deductible at all
personal sales: a loss on personal property is not deductible but is not taxable either

Assumptions: Reporting thresholds have changed repeatedly; a 1099-K may arrive regardless of threshold if the platform chooses to issue one. Always reconcile the form to your own records rather than reporting the gross figure as income.

Step-by-Step Example: A $28,000 1099-K From an Online Shop

Work from gross reported volume to actual taxable profit.

1099-K Box 1a$28,000
Cost of goods sold$4,100
Platform and payment fees$1,400
Shipping paid$700

Gross receipts as reported: $28,000.
Total deductible costs: $4,100 + $1,400 + $700 = $6,200.
Net profit: $28,000 − $6,200 = $21,800.
SE tax base: $21,800 × 92.35% = $20,132.
SE tax: $20,132 × 15.3% = $3,080.
Half of that, $1,540, is deductible above the line against income tax.

Result$21,800 of taxable profit — not the $28,000 reported

Reporting the $28,000 gross figure as income would overstate profit by $6,200 and overpay tax by roughly $2,300. The form is an information return, not a statement of taxable income, and reconciling it to your own books is the whole job.

1099-K FAQ

Is the whole 1099-K amount taxable? ▾

No. You're taxed on profit — gross minus your cost of goods and business expenses. Reselling a $1,000 item you bought for $1,000 produces no taxable income.

I just sold old personal stuff — do I owe tax? ▾

Selling used personal items at a loss is not taxable, but you may still receive a 1099-K. Report it correctly and keep records showing you sold for less than you paid.

What is self-employment tax? ▾

If your activity is a business, net profit over $400 owes 15.3% self-employment tax (Social Security + Medicare) on top of income tax. Half of it is deductible.