A fashion collection P&L answers two different questions: how much your owned collection has moved on paper, and how much you actually made or lost on pieces you sold. Mixing those together produces a number that looks impressive but explains very little.

Record the cost basis

Cost basis begins with what you paid for each item. If you want a more complete personal accounting view, you may also record tax, shipping, authentication, restoration, or platform fees. Use the same rule across every piece so totals remain comparable.

Calculate unrealized P&L for owned pieces

For a piece you still own, subtract cost basis from its current estimated market value. Divide that difference by cost basis and multiply by 100 to calculate the percentage change.

Owned exampleYou paid $800. Current estimated range is $950–$1,100, with a $1,025 midpoint. Unrealized P&L is +$225, or +28.1%.

“Unrealized” matters. You have not received $1,025, and the item may sell for less after negotiation and fees.

Calculate realized P&L for sold pieces

For a sold piece, use actual sale proceeds rather than a current estimate. Realized P&L equals net sale proceeds minus cost basis. If the platform charged fees or you paid shipping, subtract those amounts when calculating net proceeds.

Sold exampleYou paid $500, sold for $700, and paid $90 in fees and shipping. Net proceeds are $610. Realized P&L is +$110, or +22%.

Use the free resale profit calculator to enter your sale price, seller fees, shipping and acquisition cost. It separates marketplace-remitted buyer tax from proceeds and leaves profit unknown when purchase cost is missing.

In the Pieces collection P&L builder, sold-item gain is the sale amount you enter minus the purchase price you recorded. Pieces does not automatically retrieve payouts or deduct marketplace fees. Reconcile those costs separately and use a consistent meaning for the amounts you enter.

Build useful views

A whole-closet view shows the collection as one portfolio. Category views help compare watches, bags, jewelry, sneakers, or clothing. “Most profit” can reveal the pieces driving the result, while a sold-only view shows performance already locked in.

Do not confuse asks with proceeds

An active listing is evidence of what a seller wants. It is not proof of what a buyer paid. Exact completed sales are stronger for realized market behavior, but condition and timing still matter. Use a market range and a confidence label so the P&L does not pretend uncertain evidence is cash.

Share the summary, protect the details

A collection card can show invested amount, estimated market value, and aggregate P&L without exposing receipts, private photos, or what you paid for every individual item. Pieces provides privacy controls for profiles, closets, pieces, and posts.