Marketplace Income
Marketplaces bring buyers to you in exchange for fees on every sale. Those fees layer up, so net payout is the figure that matters. These tools help you see what you keep per sale and per month after the platform takes its cut.
Last updated June 2, 2026
How the income works
- The marketplace connects you with buyers for a fee.
- Fees can include listing, transaction, and processing charges.
- Net payout per sale is the price minus those fees and your costs.
- Monthly profit is net payout times sales volume.
Common expenses
- Product or unit cost.
- Shipping and packaging.
- Photography and listing creation.
- Returns and refunds.
Common fees
- Listing or insertion fees.
- Transaction or final-value fees.
- Payment processing percentage and flat fees.
- Promoted or featured listing fees.
Calculators for marketplaces
Start with the tool that matches your situation.
Platform Fee Calculator
Break down fees and net payout on a single sale.
Open calculator →Etsy Profit Calculator
Estimate per-order and monthly profit after marketplace fees.
Open calculator →Side Hustle Break-Even Calculator
Find the sales volume where costs are covered.
Open calculator →Side Hustle Income Calculator
Turn an idea into monthly profit, hourly rate, and break-even math.
Open calculator →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.
For decisions that affect your money, taxes, or business, review your situation with a qualified professional. See our full disclaimer.
Frequently asked questions
How do marketplace fees affect income?
Listing, transaction, and processing fees stack on each sale, so net payout is often noticeably below the sale price. The platform fee calculator shows the breakdown for a single sale.
How do I estimate marketplace profit?
Subtract all fees and your unit and shipping costs from the sale price for net payout, then multiply by volume. The profit and break-even calculators do this from your numbers.
Are these calculators tied to a specific marketplace?
No. They are independent and not affiliated with any marketplace. You enter the fee percentages that apply to your platform so the estimate matches your situation.
Last updated June 2, 2026. Back to all categories.