Flip Profit Calculator 2026: Net Profit After Fees
Calculate net profit, ROI, margin, break-even price, and target sale price after marketplace fees, shipping, reserves, and labor.
Works on paper
Save the comp and verify condition, sell-through, and final fee basis before buying.
Profit Breakdown
Fee Policy Reviewed 2026-10-01
Platform presets use the shared Underpriced US marketplace fee policy. Buyer-paid shipping is counted as revenue when you receive it, and buyer tax is only used as a fee-basis input. Verify account-specific discounts, ad fees, international fees, refunds, and marketplace receipt details before bookkeeping.
How to Use the Flip Profit Result
This calculator is for the in-store or pre-listing decision: buy, counter, list higher, or skip. It includes marketplace fee basis, seller shipping, supplies, return or markdown reserve, and labor time so a good-looking spread does not hide a weak flip.
Use the break-even and target sale prices before accepting offers. If the target price is above recent sold comps, the item is probably not underpriced enough for your workflow.
Formula and Pitfalls
Net profit = sale price + buyer shipping - marketplace fees - buy cost - seller shipping - other costs - reserve
Shipping is two lines
Buyer-paid shipping can be revenue when you receive it, but your label still leaves as a cost. Enter both sides when the marketplace fee basis includes shipping.
Tax is fee-basis only
Buyer tax is not seller revenue. When entered, break-even and target prices scale it as a planning tax-rate estimate, then final receipts remain the source of truth.
Gross spread is not ROI
A $70 spread can still miss after fees, seller shipping, markdown reserve, and labor. The ROI card uses cash invested, not list price.
Target price must match comps
If the target sale price sits above clean sold comps for the exact condition, negotiate the buy cost or skip instead of inventing a higher market.
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