Online selling

eBay Reselling Profit Calculator

Reselling margin dies on fees, shipping, and returns.

Last updated June 2, 2026

Enter buy price, sell price, fees, and volume for net profit.

When to use this calculator

  • You flip on eBay and need profit per sale and per hour.
  • You compare reselling to local marketplace flipping.
  • You plan to scale sourcing and need margin first.

Inputs you need

  • Average sale price, cost of goods, fees, shipping you pay, sales per month.
  • Hours per month for sourcing, listing, packing, and messages.

Expenses people forget

  • Promoted listing fees and payment processing.
  • Returns, partial refunds, and relisting time.
  • Inventory cash tied up in unsold items.

Your numbers

Example values are shown so you can see how it works. Replace them with your own.

Estimated net monthly profit
$280
  • Gross monthly revenue$1,306
  • Total costs and fees- $977
  • Estimated tax reserve- $49
  • Net monthly profit$280
  • Profit margin21.4%
  • Annualized net$3,355
Worth testing
Probably worth testing

The margin is workable. Watch fees and returns closely as volume grows, since they scale with you.

Suggested next steps

  1. Re-run with your worst month's costs, not your best.
  2. Track fees and returns separately as volume grows.
  3. Raise price before scaling ad spend.

Estimates only, based on the numbers you enter. Nothing is saved to the page address. Tax figures are rough planning numbers, not filing advice.

Assumptions this calculator makes

  • Revenue and costs are steady monthly averages.
  • Tax reserve is a rough set-aside, not tax advice.

This is an estimate, not advice

Every result here is a rough model based only on the numbers you enter. Sidequity is an informational tool and does not provide professional, tax, legal, investment, or financial advice, and it makes no income guarantees. Any tax set-aside is a planning placeholder, not a tax calculation.

How to interpret the result

Net monthly is what you can plan around.

Thin margin leaves no room for a bad month.

What this calculator does not know

  • Category-specific return rates you have not experienced yet.
  • Seasonal slowdowns in your niche.

Common mistakes

  • Ignoring marketplace fees.
  • Forgetting ad spend.
  • Using gross revenue as profit.

Suggested next steps

  • Run a two-week log before you buy more inventory.
  • Read is eBay reselling worth it for turnover and sourcing traps.
  • Compare facebook-marketplace-flipping for local-only weeks.

Estimates only. Not tax, legal, or financial advice.

Frequently asked questions

Is profit guaranteed?

No. This is an estimate from your inputs.

What tax reserve should I use?

A rough planning set-aside, often 20 to 30 percent of profit. Confirm with a tax professional.

Why are margins thin?

Fees, ads, returns, and unit costs stack on every sale.

How do I improve margin?

Raise price, cut input cost, or reduce fees and ad spend.

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eBay Reselling Profit Calculator last updated June 2, 2026. Back to all calculators.